CAB™ 16 Series
CobraNet™ Audio Bridge
CAB 16i
CAB 16o
CAB 16d
User Manual
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GENERAL CAUTIONS AND WARNINGS!
To prevent electrical shock or potential fire hazards, do not expose the CAB 16 to moisture or rain.
Before using this product, read the user manuals for further warnings and cautions.
The following cautions should be carefully observed when installing, wiring or using this product:
DO NOT use any other power supply or cable other than the one provided with this unit.
DO NOT remove the top cover of the unit. There are no user serviceable parts inside. Refer service
to qualified personnel.
DO NOT use solvents or other cleaners to clean the unit. Basic external care requires only a damp
cloth. Disconnect the power supply cord before cleaning.
Read all safety and installation instructions and retain all documentation for further reference.
The CAB 16 should be installed so that its mounting position does not interfere with proper venti-
lation.
This product should not be installed or placed near a source of heat.
Power supply cords and associated connectors should be unplugged from the power source when
the unit is not used for long periods of time, or will be stored.
If this product is to be mounted in an equipment rack, install rear support if required by the rack
manufacturer.
Care should be taken to ensure that the installation is clear of possible sources of contamination.
Make sure that the product’s ventilation openings are not exposed to possible sources of liquid,
gases, or other contaminants.
This product should be inspected by a qualified service technician if the power supply cord or con-
nector has been damaged, if the unit has been dropped, or if a foreign substance has gained access
to the interior electronic and electrical components.
The information contained in this manual is subject to change without notice. Peavey Electronics is not liable
for improper installation or configuration. The information contained herein is intended only as an aid to
qualified personnel in the design, installation and maintenance of engineered audio systems. The installing
contractor or end user is ultimately responsible for the successful implementation of these systems.
All creative content in this manual, including the layout, art design, content, photography, drawings, specifi-
cations and all other intellectual property is Copyright © 2000 Peavey Electronics Corporation, except where
noted. All rights reserved.
Manual by WR.
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CAB™ 16 Series User Manual
Table of Contents
Tech Support & Warranty Registration
Additional Resources
36
37
Page 4
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Table Of Contents
Illustrations
The CAB™ components and their relationships (Figure 1)
The CobraNet™ audio transport devices and their control panels (Figure 2)
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CAB™ 16 Series User Manual
CAUTION!
The CAB 16 Series products are Ethernet (CobraNet™) network products designed to operate on a network back-
bone or infrastructure. The design, implementation and maintenance of this infrastructure is critical to the opera-
tion and performance of the CAB 16 Series products. Peavey Electronics does not support nor service network cabling, hubs,
switches, patch bays, wall plates, connector panels or any other type of network interconnect device. Please ensure that these
components and their associated installation techniques have been properly designed and installed for CobraNet audio appli-
cations.
This manual is written specifically for the CAB 16 Series products built with Firmware Version 2.6.8. Specific functionality
relating to earlier firmware is not covered in this manual. In the event that your CAB 16 includes an earlier firmware release,
you should contact the Peavey Architectural Acoustics Technical Services Group for information on how this may, or may not,
impact your installation. Installation or upgrading firmware within the CAB 16 is not covered in this manual.
Several associated products are required to complete a working system using the CAB 16. This manual frequently makes refer-
ence to these other products, but does not provide specific configuration or installation information on them. Please refer to
the manuals for these products for information. Every product, both Peavey products and third party devices, must be proper-
ly installed for the CAB 16 to operate in accordance with its published specification.
This product is fan cooled with an intake fan on one side of the unit. The exhaust is located on the other side. Do not block
the fan or any vents when installing this product. Proper cooling is essential to maintain proper operation and long-term sta-
bility in this product. Install this product in EIA approved equipment racks only.
The information contained in this manual is subject to change without notice. Peavey Electronics is not liable for improper
installation or configuration. The information contained herein is intended only as an aid to qualified personnel in the design,
installation and maintenance of engineered audio systems. The installing contractor or end user is ultimately responsible for
the successful implementation of these systems.
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Welcome
Thank you for purchasing the CAB™ 16 Series CobraNet™ Audio Bridge. This
product is designed to provide years of trouble-free operation, and high qual-
ity audio performance. We sincerely hope that you enjoy your new CAB 16
Series product, and will find other products in the Peavey Architectural
Acoustics product line to supplement your system. We are confident that
you will find the CAB 16 Series products, as well as other Architectural
Acoustics products to be of the highest quality available.
Thank You!
This manual was written to provide as much information as possible for
your new Peavey Architectural Acoustics product. It is our sincere desire
that you enjoy your purchase. We feel that the best way to fully enjoy any
purchase is to have an in-depth understanding of the product’s features,
functionality and performance characteristics. We hope that this manual,
along with the manuals of our other products, will provide this. If you
require additional information that this manual does not provide, please let
us know. We are always looking for better ways to provide information
about our products, and your input is always appreciated. If you have a
comment about this manual, or would like to make a suggestion, please
write to: Peavey Electronics Corp., Architectural Acoustics Division, 711 A
St., Meridian, MS 39301. Thank you again for using Peavey!
The CAB 16 Series products are packaged in a single container. This contain-
er includes the following items:
What’s In The Box?
1- CAB 16i, CAB 16o or CAB 16d CobraNet Audio Bridge
1- IEC removable power supply line cord
(120VAC Domestic, 230VAC Export)
18- 3-screw Euro connectors*
1- User Manual/Literature Package
* Asterisk indicates that these items are shipped installed on the CAB 16
Series product.
If any of these items are missing, please contact your Authorized Peavey
Architectural Acoustics contractor/dealer.
This User Manual covers the following CAB 16 Series products:
Covered Products
CAB 16i CobraNet Audio Bridge and matching software devices for
MediaMatrix. (16 line inputs)
CAB 16o CobraNet Audio Bridge and matching software devices for
MediaMatrix (16 line outputs)
CAB 16d CobraNet Audio Bridge and matching software devices for
MediaMatrix (8 digital audio (AES3 or S/PDIF) channels in and out)
All of these products have similar feature sets and audio performance charac-
teristics. This manual provides information on all products, and the differ-
ences are notated within the context of the subject matter. When the topic
is common to both units, no differentiation is noted, nor required.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
- CobraNet™ ethernet audio transport
- Single rack space package
- Forced air cooling
Features
- Front panel analog audio metering
- Front panel network status monitoring
- 24 bit D/A and A/D converters
- Discreet analog design
- Digital control of analog functions
- 16 line level inputs (16i only)
- 16 line level outputs (16o only)
- 8 AES3 or S/PDIF digital audio inputs and outputs (16d only)
- Full analog gain stage w/digital control (except 16d)
- User defined network hardware address
- Removable connectors for audio and external controls
- Industry standard RJ-45 connector for connecting to ethernet
CobraNet network
- RS-485 port for transporting serial data across the network
- Support for stand alone operation
In stand alone applications, the CAB 16 Series is a very powerful tool.
Ease of use, external control options and a simple interface make it per-
fect for many applications where simple audio transport is required.
Among the many applications the CAB 16 Series was designed for
include:
- Theme Parks
- Presentation Rooms
- Board Rooms
- Courtrooms
- Auditorium/Cafetorium
- Lecture Hall Sound Reinforcement
- Meeting Rooms
- Convention Centers
- Paging
- Background Music
- Retail Spaces
- Restaurant/Bar Sound
The CAB 16 Series is a prefect choice for many audio applications
where transport of audio signal must occur over long distances. Used in
conjunction with MediaMatrix products, the CAB 16 Series provides
the highest level of audio systems performance, functionality and con-
trol.
The CAB 16 Series of CobraNet Audio Bridges are designed for
advanced MediaMatrix systems. It is assumed that you have a working
knowledge of MediaMatrix hardware and software as well as comput-
ers, Windows NT and ethernet networks. If you do not have this
knowledge, please refer the configuration and installation of this prod-
uct to qualified personnel. For in-depth information on MediaMatrix,
refer to the online help. Additional resources are listed in this manual.
Assumptions
Page 8
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Installation
The CAB™ 16 Series product is designed to mount in a standard EIA electron-
ic equipment rack. Because the CAB 16 includes forced air cooling, adding
rack mounted vent panels is not required for most installations. However, it
is recommended that common sense be applied to large installations where
multiple units are mounted in a single rack. It is generally accepted that a
ratio of 2:1 is a good rule of thumb that usually provides adequate perform-
ance. In installations where adverse conditions exist, and room temperatures
are likely to rise, additional vents should be installed.
Installation
Do not block the fan or any vents when installing the CAB 16. Proper cool-
ing is essential to maintain proper operation and long-term stability in this
product.
When dressing off wiring harnesses, take care with CAT 5 cables. Do not
tie-wrap bundles of CAT 5 wire too tight. Leave plenty of room for bends,
allowing the cable to progress naturally from the RJ-45 connector. Creating
tightly wrapped CAT 5 wire bundles can cause loose crimp joints and defec-
tive terminations.
To successfully install your new CAB 16 Series product, and perform the
testing examples contained in this manual, you will need the following com-
ponents:
• A MediaMatrix® MiniFrame 208nt-cn or MM™-760nt, MM™-960nt or
MM™-980nt Mainframe.
• MWare 3.1.2 or later software.
• PC Monitor, mouse and keyboard.
• At least 1 MM™ DSP-cn CobraNet™ DPU card for MediaMatrix.
• At least 1 CAB 16i and 1 CAB 16o CobraNet™ Audio Bridge, OR 2 CAB16d
CobraNet Audio Bridges.
• At least 1 generic fast ethernet 100 Base T network switch*.
• An assortment of CAT 5 cables.
• An audio source, power amplifier and loudspeaker.
In MediaMatrix, the minimum CobraNet network consists of a single
MediaMatrix frame housing at least one MM DSP-cn CobraNet DPU card,
CAB 16i and CAB 16o audio bridge and a single ethernet switch. Of course,
most systems will include many more DSP-cn cards and CAB devices, but
this is the most basic configuration.
* The selection of a proper network switch is critical for a successful imple-
mentation. Although CobraNet is an ethernet protocol, there are perform-
ance issues that must be considered when selecting this switch for use in
CobraNet audio systems.
For the latest list of CobraNet compliant products, please refer to Peak
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Hardware vs. Software Devices
The CAB 16 Series of products is an integration of physical hardware and software. Within CobraNet™, there are even further
integrations, that being the network itself, and the actual piece of equipment, in this case, the CAB 16. In software, the equip-
ment is represented by a “Device” within the MediaMatrix MWare application. The CobraNet network is represented by a tra-
ditional MediaMatrix wiring block with inputs and outputs. The “wire” between these blocks is the configuration of audio sig-
nal flow with the MediaMatrix’s DPU. For proper operation of these products, a thorough understanding of all of these
devices is required.
There is a very basic relationship between the CAB 16 physical product and its accompanying software device. Essentially, the
software device is the “Control Panel” for the hardware. There are no physical controls on the CAB 16 itself, so all functions for
it are accessible only from its software based control panel. This control panel is a yellowbox labeled “CAB 16”, and can be
found under the Input/Output, CobraNet section of the Device Menu within the MediaMatrix software. There is one for each
model of CAB 16 product. I like to refer to this device as the “Taxi”, since it’s a yellow CAB......get it?
The figure below shows the relationship between the Taxi, its control panel and the actual CAB hardware.
Fig. 1, The CAB components and their relationships.
The second half of this equation, as mentioned above, is the audio transport. This transport is the CobraNet network that car-
ries audio from one location to another. Within MediaMatrix, this is represented by a block with “wire nodes” on it that repre-
sent the actual input and output points for the system. What is very important to note is that the hardware unit, the CAB
itself, and the audio transport device DO NOT necessarily match up. For example, it is possible to have one output wiring
block assigned to multiple CAB 16o units although generally, the input side is always a one-to-one relationship. In the figure
below, you can see the two network blocks. The one with the nodes on the right of the block is an audio “input” position, the
one with the nodes on the left side of the block is an audio “output” position. Each of these also has a control panel. The con-
trol panels for each are very similar, so don’t get them mixed up. You can tell which one is the “input” side by the “Receiving”
label on the channel LEDs. These LEDs indicate that an audio data stream is successfully being received from a distant network
location.
Input Side of
Audio Path
CobraNet Input
Control Panel
CobraNet Output
Control Panel
Output Side of
Audio Path
Fig. 2, The CobraNet audio transport devices and their control panels.
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Hardware & Software
The Test View
In order to properly use this manual, it is recommended that a basic MediaMatrix view file be configured. This view file should
have a minimum number of components and should include one each of the CAB™ 16i and CAB 16o, or, it should match exactly
your specific system hardware. The following figure is a good example of such a “test” file.
CobraNet Status Tool
CobraNet transport
device
The yellow CAB
device...the “taxi”
Audio from the
“outside” enters
the MediaMatrix
system here.
These wires carry
digital audio within
the MediaMatrix
system.
Audio to the “out-
side” exits the
MediaMatrix sys-
tem here.
Fig. 3, Recommended Test View Configuration
Once again....to summarize. It is very important to understand the relationship between the CAB hardware, it’s associated soft-
ware control software and the CobraNet™ network, or “audio transport”. The blocks in this example labeled CobraNet 1A, 1B,
etc. are transport blocks that receive digital audio from, and carry digital to, distant CobraNet network locations. This audio
enters and exits the MediaMatrix system at these blocks. The wires represent the digital audio path within the MediaMatrix
system. The blocks labeled CAB, the yellow “Taxi”, represent the actual CAB hardware. There must be one of these for each
corresponding hardware piece. The hardware, via its control panel, can be “assigned” to any network audio channel, called a
“bundle”. This bundle is also assigned in the CobraNet transport block. It is this bundle assignment that gets the audio from
the CAB’s analog port and onto the network. If this is confusing to you, stop and re-read this section. It is vital to your ability
to successfully implement a CobraNet audio system using MediaMatrix products. If you understand it....kinda, but still need
help, read on....you’ll see how it all fits together as you start hooking up CABs and passing audio from point to point.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
CAB 16i Software Device Features
LINK LED This LED will turn ON when a valid connection has been established between the
CAB 16 and the network switch. This function is duplicated on the front panel of the CAB 16i.
ID The four digit number is the user-defined Hardware Base Address. The range is hex,
between 0000 and FFFF. The LED will turn ON when a valid number is entered. Each CAB
16 on the network must have a unique ID. If there is a duplicate, or the value is zero, this LED
will not light, and communications between the CAB and network is not valid.
BUNDLE User defined number that assigns eight audio channels to a CobraNet™ network
“bundle”. The range is OFF to 32,767. For switched networks, the number must be 256 or
higher. This number must also be set in the CobraNet I/O device for which the CAB will
transport audio. The LED is ON when the CAB 16i is receiving the specified network bundle.
Each CAB 16i can receive two separate audio bundles.
GAIN Software control of the CAB 16i’s analog gain stage. Gesturable from the knob or the
digital window located just above each knob. The range is -95.5 dB to +30.5 dB.
FULL-SCALE SENSITIVITY BLOCK When clicked upon, this block opens an additional
window that includes buttons for adjusting the CAB 16i’s input sensitivity. There are two
windows, one for channels 1-8, and another for channels 9-16. A single-click in Control Mode,
or a double-click in Edit Mode will open this block.
FULL-SCALE SENSITIVITY DIALOG This window reveals the CAB 16i’s input channel
analog sensitivity settings. There are four settings for each input channel. The levels indicate
a maximum setting and allow the user to “shift” the available dynamic range for flexibility in
matching nominal incoming signal levels. When the GAIN control is at 0 dB, the input sensi-
tivity is determined solely by the Full Scale Sensitivity button.
Page 12
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Software Features
CAB 16o Software Device Features
LINK LED This LED will turn ON when a valid connection has been established between the
CAB™ 16 and the network switch. This function is duplicated on the front panel of the CAB
16o.
ID The four digit number is the user-defined Hardware Base Address. The range is hex,
between 0000 and FFFF. The LED will turn ON when a valid number is entered. Each CAB
16 on the network must have a unique ID. If there is a duplicate, or the value is zero, this LED
will not light, and communications between the CAB and network is not valid.
BUNDLE User defined number that assigns eight audio channels to a CobraNet™ network
“bundle”. The range is OFF to 32,767. For switched networks, the number must be 256 or
higher. This number must also be set in the CobraNet I/O device for which the CAB will
transport audio. The LED is ON when the CAB 16o is transmitting the specified network
bundle. Each CAB 16o can transmit (send) two separate audio bundles.
MUTE This single button will mute all audio outputs in the digital domain. This button is
independent of the output GAIN control.
GAIN Software control of the CAB 16o’s analog output stage. Gesturable from the knob or
the digital window located just above each knob. The range is -95.5 dB to +30.5 dB.
FULL-SCALE SENSITIVITY BLOCK When clicked upon, this block opens an additional
window that includes buttons for adjusting the CAB 16o’s output scale. There are two win-
dows, one for channels 1-8, and another for channels 9-16. A single-click in Control Mode, or a
double-click in Edit Mode will open this block.
FULL-SCALE SENSITIVITY DIALOG This window reveals the CAB 16o’s output channel
analog settings. There are four settings for each output channel. The levels indicate a maxi-
mum setting and allow the user to “shift” the available dynamic range for flexibility in match-
ing the input sensitivity of the power amplifier input. When the GAIN control is at 0 dB, the
input sensitivity is determined solely by the Full Scale Output button.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
CAB 16d Software Device Features
LINK LED This LED will turn ON when a valid connection has been established between the
CAB 16 and the network switch. This function is duplicated on the front panel.
ID The four digit number is the user-defined Hardware Base Address. The range is hex,
between 0000 and FFFF. The LED will turn ON when a valid number is entered. Each CAB
16 on the network must have a unique ID. If there is a duplicate, or the value is zero, this LED
will not light, and communications between the CAB and network is not valid.
METER INPUTS This switch along with the METER OUTPUT switch toggles the CAB
16d’s front panel audio meters between digital inputs and digital outputs. This function is
duplicated on the front panel of the CAB 16d.
DISABLE OUTPUTS This switch turns off the AES transmitters so that no valid AES data is
output from the box. This is different from Muting outputs in that muting stops audio data
but maintains valid AES output.
BUNDLE User defined number that assigns eight audio channels to a CobraNet™ network
“bundle”. The range is OFF to 32,767. For switched networks, the number must be 256 or
higher. This number must also be set in the CobraNet I/O device for which the CAB will
transport audio. The LED is ON when the CAB 16d is receiving the specified network bundle.
Each CAB 16d can receive two separate audio bundles.
CHANNEL STATUS BLOCK Each audio bundle includes a Channel Status block. A single-
click in Control Mode, or a double-click in Edit Mode will open the block. When open, this
block contains status indicators and controls for digital audio performance parameters for
each audio bundle. The windows include separate functionality for input and output bundles.
Page 14
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Software Features
CAB 16d Software Device Features (Input & Output Status Panels)
ERROR Indicates an error has been detected on the incoming audio data stream. There is a
single LED for each digital channel (2 audio channels each).
SAMPLE RATE CONVERTER DISABLE Disables the on-board sample rate converters.
The audio source must be locked to the CobraNet network for audio to be valid and lock.
FORMAT Indicates if digital source consumer or professional grade product. Applies to
each digital channel.
EMPHASIS Indicates status of emphasis. The options are “Not Indicated” which means that
the emphasis status is not specified. “None” means that there is no emphasis. “50/15” indicates
that the signal contains 50/15 us and CCIT J.17 indicates that CCITT J.17 is used.
SAMPLE RATE Indicates the sample rate of the incoming AES data stream. This is the sam-
ple rate of the input signal, before conversion.
LOCK Indicates the CAB™ has locked to the incoming audio data stream.
COPY The copy bit on the AES audio stream is set.
AUDIO Indicates that valid audio data has been detected on the inputs.
OUTPUT CHANNEL DISABLE This switch turns off the AES transmitters so that no valid
AES data is output from the box. This is different from Muting outputs in that muting stops
audio data but maintains valid AES output.
OUTPUT CHANNEL FORMAT Indicates if digital source consumer or professional grade
product. Applies to each digital channel.
OUTPUT CHANNEL EMPHASIS Indicates status of output emphasis. The options are “Not
Indicated” which means that the emphasis status is not specified. “None” means that there is
no emphasis. “50/15” indicates that the signal contains 50/15 us and CCIT J.17 indicates that
CCITT J.17 is used.
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CAB™ 16 Series User Manual
CAB 16i Front Panel Features
1
2
3
4
5
6
7
8
9
10 11
1
1. AUDIO METERS Peak reading LED ladder displays indicating audio input level in the ana-
log domain. Signal level is displayed after the adjustable gain stage and before the A/D con-
verters.
2. HARDWARE BASE ADDRESS SWITCHES 4-position rotary switches for setting the
hardware base address. Shown with tamperproof cover removed.
3. TX LED Indicates the presence of data being transmitted (sent) from the CAB 16 onto the
CobraNet™ network.
4. RX LED Indicates the presence of data being received into the CAB 16 from the CobraNet
network.
5. TX ERROR LED Indicates an error occurred during transmission of data from the CAB 16
onto the CobraNet network.
6. RX ERROR LED Indicates that an error occurred while receiving data into the CAB 16 from
the CobraNet network.
7. FAULT LED Illumination of the Fault indicator indicates detection of an unexpected condi-
tion within the CobraNet interface. Some fault conditions will also light the RX Error and/or
TX Error indicators to give more specific indication if the unexpected condition is in the
receive or transmit processes. The errors are reported by a series of flashes. See page 37 for
help on identifying error codes for the CAB 16.
8. LINK LED Indicates a valid control link has been established between the CAB 16 and the
network switch. This function is duplicated in the software control panel.
9. CONDUCT LED Indicates the CAB 16 is an active conductor on the CobraNet network.
Only one conductor is allowed per network.
10. RS-485 LED Indicates activity on the RS-485 bus. This LED should be OFF during idle con-
ditions and should blink ON during normal activity. (If this LED stays ON during idle, it may
indicate an RS-485 conductor polarity inversion.)
11. POWER LED Indicates that the CAB 16 is powered from an AC mains power source.
Page 16
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Panel Features
CAB 16i Rear Panel Features (shown without the Euro connectors attached)
6
1
3
4
5
7
7
2
1. IEC POWER CABLE RECEPTACLE The included removable IEC power cable connects
here. Use only the supplied cable.
2. POWER SWITCH Applies mains AC power to the CAB™ 16.
3. LINK OUT CONNECTOR BNC connector to transmit link data to other CAB units or third
party synchronization products.
4. LINK IN CONNECTOR BNC connector that receives link data from other CAB units or
third party synchronization products.
5. COBRANET NETWORK I/O RJ-45 connector provides interface to the CobraNet™ audio
network. This connection is required to pass audio with the CAB 16.
6. RS-485 PORT Two two-wire, half-duplex RS-485 connections on removable Euro connec-
tors. Each connector is internally wired together for convenient busing of adjacent units.
7. AUDIO INPUT CONNECTORS Balanced, three-wire line level audio input connections on
removable Euro connectors. This illustration shows the connector header only. The unit is
shipped with matching black pluggable connectors for each audio channel.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
CAB 16o Front Panel Features
1
2
3
4
5
6
7
8
9
10 11
1
1. AUDIO METERS Peak reading LED ladder displays indicating audio input level in the ana-
log domain. Signal level is displayed after the adjustable gain stage and before the A/D con-
verters.
2. HARDWARE BASE ADDRESS SWITCHES 4-position rotary switches for setting the
hardware base address. Shown with tamperproof cover removed.
3. TX LED Indicates the presence of data being transmitted (sent) from the CAB 16 onto the
CobraNet™ network.
4. RX LED Indicates the presence of data being received into the CAB 16 from the CobraNet
network.
5. TX ERROR LED Indicates an error occurred during transmission of data from the CAB 16
onto the CobraNet network.
6. RX ERROR LED Indicates that an error occurred while receiving data into the CAB 16 from
the CobraNet network.
7. FAULT LED Illumination of the Fault indicator indicates detection of an unexpected condi-
tion within the CobraNet interface. Some fault conditions will also light the RX Error and/or
TX Error indicators to give more specific indication if the unexpected condition is in the
receive or transmit processes. The errors are reported by a series of flashes. See page 37 for
help on identifying error codes for the CAB 16.
8. LINK LED Indicates a valid control link has been established between the CAB 16 and the
network switch. This function is duplicated in the software control panel.
9. CONDUCT LED Indicates the CAB 16 is an active conductor on the CobraNet network.
Only one conductor is allowed per network.
10. RS-485 LED Indicates activity on the RS-485 bus. This LED should be OFF during idle con-
ditions and should blink ON during normal activity. (If this LED stays ON during idle, it may
indicate an RS-485 conductor polarity inversion.)
11. POWER LED Indicates that the CAB 16 is powered from an AC mains power source.
Page 18
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Panel Features
CAB 16o Rear Panel Features (shown without the Euro connectors attached)
1
2
3
4
5
6
7
7
1. IEC POWER CABLE RECEPTACLE The included removable IEC power cable connects
here. Use only the supplied cable.
2. POWER SWITCH Applies mains AC power to the CAB™ 16.
3. LINK OUT CONNECTOR BNC connector to transmit link data to other CAB units or third
party synchronization products.
4. LINK IN CONNECTOR BNC connector that receives link data from other CAB units or
third party synchronization products.
5. COBRANET NETWORK I/O RJ-45 connector provides interface to the CobraNet™ audio
network. This connection is required to pass audio with the CAB 16.
6. RS-485 PORT Two two-wire, half-duplex RS-485 connections on removable Euro connec-
tors. Each connector is internally wired together for convenient busing of adjacent units.
7. AUDIO OUTPUT CONNECTORS Balanced, three-wire line level audio output connections
on removable Euro connectors. This illustration shows the connector header only. The unit is
shipped with matching black pluggable connectors for each audio channel.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
CAB 16d Front Panel Features
1
2
2
3
4
5
6
7
8
9
10 11 12
1. METER SELECT This meter toggles in the function of the front panel audio meters between
input and output. The corresponding LED indicates the active meter function.
2. AUDIO METERS Peak reading, switchable LED ladder displays indicating audio level in the
digital domain. These meters indicate input OR output level depending on the position of the
front panel METER SELECT switch and/or the Meter Input and Meter Output switches in
the CAB 16d Software Device dialog box (p 14).
3. HARDWARE BASE ADDRESS SWITCHES 4-position rotary switches for setting the
hardware base address. Shown with tamperproof cover removed.
4. TX LED Indicates the presence of data being transmitted (sent) from the CAB 16 onto the
CobraNet™ network.
5. RX LED Indicates the presence of data being received into the CAB 16 from the CobraNet
network.
6. TX ERROR LED Indicates an error occurred during transmission of data from the CAB 16
onto the CobraNet network. (See Appendix, Error Reporting.)
7. RX ERROR LED Indicates that an error occurred while receiving data into the CAB 16 from
the CobraNet network. (See Appendix, Error Reporting.)
8. FAULT LED Illumination of the Fault indicator indicates detection of an unexpected condi-
tion within the CobraNet interface. Some fault conditions will also light the RX Error and/or
TX Error indicators to give more specific indication if the unexpected condition is in the
receive or transmit processes. The errors are reported by a series of flashes. See page 37 for
help on identifying error codes for the CAB 16.
9. LINK LED Indicates a valid control link has been established between the CAB 16, the cable
plant and the network switch. This function is duplicated in the software control panel.
10. CONDUCT LED Indicates the CAB 16 is an active conductor on the CobraNet network.
Only one conductor is allowed per network.
11. RS-485 LED Indicates activity on the RS-485 bus. This LED should be OFF during idle con-
ditions and should blink ON during normal activity. (If this LED stays ON during idle, it may
indicate an RS-485 conductor polarity inversion.)
12. POWER LED Indicates that the CAB 16 is powered from an AC mains power source.
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Panel Features
CAB 16d Rear Panel Features (shown without the Euro connectors attached)
1
3
4
5
6
7
8
2
1. IEC POWER CABLE RECEPTACLE The included removable IEC power cable connects
here. Use only the supplied cable.
2. POWER SWITCH Applies mains AC power to the CAB™ 16.
3. LINK OUT CONNECTOR BNC connector to transmit link data to other CAB units or third
party synchronization products.
4. LINK IN CONNECTOR BNC connector that receives link data from other CAB units or
third party synchronization products.
5. COBRANET NETWORK I/O RJ-45 connector provides interface to the CobraNet™ audio
network. This connection is required to pass audio with the CAB 16.
6. RS-485 PORT Two two-wire, half-duplex RS-485 connections on removable Euro connec-
tors. Each connector is internally wired together for convenient busing of adjacent units.
7. AUDIO INPUT CONNECTORS Balanced, three-wire digital (AES3) audio input connec-
tions on removable Euro connectors. This illustration shows the connector header only. The
unit is shipped with matching black pluggable connectors for each header bay.
8. AUDIO OUTPUT CONNECTORS Balanced, three-wire digital (AES3) audio output con-
nections on removable Euro connectors. Each digital channel carries two audio channels. This
illustration shows the connector header only. The unit is shipped with matching black plug-
gable connectors for each audio channel.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Basic CobraNet Network Connections
The CAB 16 Series products feature 4 different connection types. (Refer to the Rear Panel Details.) First in priority is the
CobraNet™ network port. This RJ-45 connector is designed to connect with standard, off-the-shelf Category 5 (CAT 5) cable
for use with standard Ethernet network switches. This cabling interconnect is commonly referred to as the wiring “backbone”.
This backbone must be properly designed for each system. Ideally, this cabling and its associated hardware would be designed,
installed and certified by a competent network systems engineer.
A typical CobraNet system would include a CAT 5 cable from each CAB 16 to a network switch. An additional CAT 5 cable
would connect the switch to one or more MM-DSP-cn cards within the MediaMatrix frame. The example below is the most
basic configuration. Large systems on managed networks can get very complex. Please don’t get ahead of yourself here! You
need to be able to make this configuration work first!
MediaMatrix Frame with one MM-DSP-cn DPU Card
Standard CAT5 Cable
100 Base T Network Switch
CAB 16o
CAB 16i
Fig. 4, Typical Network Connections
Alternately, you can connect the CAB 16 CobraNet port directly to the CobraNet port on your MM-DSP-cn card, bypassing the
need for a switch. However, this type of direct connection requires a "crossover" cable. (See p. 26-27 for CAT 5 cable details.) It
should be emphasized that with this direct connection method, you cannot connect more than a single CAB product to an MM-
DSP-cn card. This type of connection is normally used for testing and troubleshooting and has limited advantages in actual sys-
tem installations.
MediaMatrix Frame with MM-DSP-cn DPU Card
“Crossover” CAT5 Cable
(See p. 26-27)
CAB 16o
Fig. 5, Direct Connection Example
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Audio & RS-485 Connections
Audio Connections
The second connection is audio. Each audio connection on the CAB™ 16i and 16o is a single three-wire, balanced analog circuit.
The connections on both of these units is identical, except one is an input, the other an output. The method is the same. For
the CAB 16d however, the method is slightly different. Each three wire connection on the 16d is a balanced, two-channel digital
(AES3 or S/PDIF, see p. 24-25) connection. AES3 compliant cable should be used with all connections on the 16d. As with any
electronic connection, care should be taken to ensure that the termination is solid. There should be no stray wire strands,
kinks or nicks in the wire jacket for a proper termination. And as always, audio connections should be made with high quality
shielded wire.
Analog (16i)
Balanced Input
Positive (+)
Digital (16d)
Two Channel Conn.
Positive (+)
Analog (16o)
Balanced Output
Positive (+)
Negative (-)
Negative (-)
Negative (-)
Shield (SH)
Shield (SH)
Shield (SH)
Standard audio cable
AES3 / 110 Ohm cable
Standard audio cable
Fig. 6, Analog and Digital Audio Connections
RS-485 Connections
The third connection is the CAB Series RS-485 Serial Port. All CAB Series products include this powerful feature that enables
you to “bridge” serial data between CAB locations on the CobraNet™ network. You can think of this as a kind of “sub-network”
that travels across the CobraNet infrastructure independently of the audio data. This feature has many uses, but is primarily
used to transport control data for the optional AmpWare amplifier control and monitoring software. In this case, the connec-
tion would terminate directly to an IA™ Series power amplifier equipped with an ACI™-485V interface module. The data format
is Half-Duplex, two-wire, balanced. Again, care should be taken to insure that your termination is correctly installed and high
quality shielded wire should be used.
NOTE: The RS-485 connector has
two sets of terminations that are
wired in parallel. This allows you to
...here
“bus” adjacent serial data connec-
tions at each network location.
With this type of connection, there
Plug this.....
is no “input” or “output”.
Balanced Connection
Positive (+)
Negative (-)
Shield (SH)
From RS-485 Device
To Next RS-485 Device
Fig. 7, RS-485 Serial Data Connections
Peavey Electronics Corp
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CAB™ 16 Series User Manual
The CAB 16d has been designed for use with AES3 (AES/EBU) and S/PDIF
(Sony/Philips Digital Interface Format) digital audio signals. The CAB 16d is
shipped from the factory to accommodate AES3 digital audio right out of the
box. You can connect AES sources directly to the CAB 16d’s input and out-
put terminals without any regard to additional interface boxes or converters.
Using S/PDIF
with the CAB 16d
When using S/PDIF digital audio signals however, it is recommended that
the following interface circuits be used between the S/PDIF audio device and
the CAB 16d. There are differences in the voltage levels, load and cable
impedance between AES3 and S/PDIF formats. Using these “matching inter-
faces” will ensure seamless operation of S/PDIF digital audio by minimizing
signal reflections and providing correct signal levels for S/PDIF operation.
The following illustrations show S/PDIF terminations to the CAB 16d’s input
and output connectors. The S/PDIF connections are illustrated as unbal-
anced consumer RCA connectors, which is typically the standard connector
for copper based S/PDIF wiring. There is also an optical version of the
S/PDIF standard which uses a fiber cable that is not a part of this discussion.
It is important to know that the audio data is the same in both AES3 and
S/PDIF formats, but because of the differences in their subcode, they are
actually different formats. Just making a wire conversion is not enough.
AES3 on an XLR connector converted to an unbalanced RCA connector is
NOT S/PDIF, and vice versa. The native formats are still the same, only the
transport media has changed. To make sure that your S/PDIF audio signals
work correctly with the CAB 16d, it is required that these circuits be
installed between the S/PDIF devices and the CAB 16d.
An important fact of digital audio transport is that the wire type is signifi-
cantly different than wire used for terminating analog audio circuits. AES3
uses symmetrical connections with transformer isolation and an output
impedance of 110 Ohms. The signal-level of this interface is higher than in
the consumer S/PDIF version. Because AES3 digital audio signals are trans-
mitted at high, video-like frequencies, they should be handled very different-
ly than standard analog audio lines. Failure to use the proper wire and cable
can cause poor digital transmission performance resulting in signal dropout.
With proper termination, AES3 signal transmission lines can easily exceed
several thousand feet when using high quality, certified cable.
Wire & Cable
S/PDIF however, uses 75 Ohm coaxial cable. Because it is the same type of
cable used in common consumer video circuits, this type of wire is inexpen-
sive and readily available. You can even buy pre-made S/PDIF cables at most
retail outlets that sell consumer electronics products. By specification, the
maximum length of a properly terminated S/PDIF cable is 25 feet. If high
quality 75 Ohm cable with premium gold 75 Ohm RCA connectors are used,
it is possible to get good results with much longer lines. The actual lengths
are unknown however, since it depends on the quality of the transmitting
circuit, the receiving circuit and the impedance match for the entire line,
including the connectors. In general, coaxial S/PDIF connections work best
in the 8-10 meter range with good 75 Ohm coaxial cable. We do not recom-
mend that you exceed this distance when using S/PDIF devices with the
CAB 16d.
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S/PDIF Connections
When making these interface connections, it is important to install the resistors at the CAB™ 16d’s output terminal, using the
removable Euro connector. The design of this connector, supplied with the CAB 16d, will provide a solid mechanical mount for
the resistors. The wiring from the consumer RCA coax cable should be soldered to the other side of the resistor network. All
interconnecting joints should be soldered as well. All resistors should be 1% or 5% tolerance, 5 W, typical.
Connecting an S/PDIF Source to a CAB 16d input
requires that the output level and impedance of the
S/PDIF source be matched to the CAB 16d’s input
circuit. The following circuit provides attenuation
from the source through one in-line 51 Ohm resistor
on the positive leg of the signal. The impedance
matching is accomplished by using a 150 Ohm resis-
tor across both legs of the S/PDIF source signal.
NOTE: A jumper is required between the negative
and SH terminals to complete the termination.
To drive an S/PDIF input from the CAB 16d’s out-
put, a similar circuit must be implemented. Again,
the impedance of the CAB 16d must be matched to
properly terminate to the S/PDIF input. This is
accomplished by using a 22 Ohm resistor across the
output of the CAB 16d. The level correction is
accomplished by placing a 75 Ohm and a 56 Ohm
resistor in series with the positive side of the CAB
16d’s output as shown. The negative side is carried
straight through to the shield conductor of the
S/PDIF device’s input. (Jumper is optional.)
Jumper
75 Ohm resistor
22 Ohm resistor
56 Ohm resistor
51 Ohm resistor
Negative/Shield
150 Ohm resistor
Positive “Hot” wire
Unbalanced Coax
RCA connector
From S/PDIF output
To S/PDIF input
Fig. 8, S/PDIF resistor network configurations
In addition to adding the resistor circuits, it may also be necessary to configure the CAB 16d output
CHANNEL STATUS to Consumer Mode before the interface between the S/PDIF device and CAB 16d is completed.
The Consumer Mode Select Switch can be found in the CAB 16d CHANNEL STATUS BLOCK, located within the
CAB 16d’s software control panel. (See pages 14-15.)
Peavey Electronics Corp
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CAB™ 16 Series User Manual
CAT 5 cable is your friend....
Well, you’ve been in the audio business for a while now....you know all about audio connections, balanced cables, multi-pairs,
SJO, TRS this and XLR that....you can dress off a wiring harness like nobody’s business....then, the industry throws “CAT 5” at
you....! So, what exactly is Category 5 cabling, and how do I terminate it?
Category 5 cable, or “CAT 5” as it is commonly known, is a wiring standard that became popular when computer networks
moved from a “bus” topology to a “star” or...... “every box is a home run” topology. The wire itself consists of 8 conductors, iden-
tified into 4 pairs, and although only two of these pairs are actually used, all four are terminated. It is a UTP (Unshielded
Twisted Pair) configuration, in true telco, or AT&T style. The cable is coupled to in-line RJ-45 connectors, also a Bell/AT&T
standard. Special crimping tools are required to make the termination, and are available everywhere, as are the connectors.
Oh...and before you start designing cable plants for small cities....a single CAT 5 cable run should not exceed 100 meters.
Just like telco wire, there are stranded and solid varieties of CAT 5 cable. This is important to know, because the RJ-45 connec-
tor is different for each type of wire. The standard “bent tyne” style connector is intended for use with solid core wire, and the
“aligned tyne” connector is for use with standard wire. There have been errors when using incorrect cable/connector combina-
tions, so be careful. The "bent tyne" connector will generally work on stranded wire by the way, but not the other way around.
In general, make sure your connector matches your cable type. If you aren’t sure, use the “bent tyne” variety.
When terminating CAT 5 cable, it is important that the natural twist of each pair be carried through as close as possible to the
point of termination at the connector. The EIA standard requires no more than 1/2 inch be left untwisted. More than 1/2 inch
of untwisted cable will affect performance at high bit rates. Although only 2 of the 4 twisted pairs are used for Ethernet, it is
important that all pairs be terminated, and that the conductors be twisted together in pairs.
The illustrations should give you the basics for getting your cables, and your audio system up and running. Although pre-made,
molded style cables are preferred, they are usually impractical, since your cabling route, distance and locations are based on the
jobsite conditions and not your test bench. Additionally, you will need rack wiring, and bulk cable is the preferred way to dress
off a wire harness, as we all know. Since this manual is printed in grayscale, you will not be able to see the color code of the
wire. We have labeled them for your convenience, but you should get familiar with the color schemes so they are second nature
to you. An error in the cabling of your audio network is often the primary cause of system errors, so....take your time, learn it
thoroughly and DO IT RIGHT THE FIRST TIME!
Although the wiring standard used in CAT 5 cabling originates with AT&T, it is functionally different for configuring ethernet
cabling. The Bell System uses a series of colors to indentify wire pairs. This color scheme identifies the pair numbers, and con-
ductor polarity, and applies to the WIRE....not the connector. It is important to know what pairs are which, and the function
of the pins on the RJ-45 connector. The colors are BLUE, ORANGE, GREEN and BROWN for the first four pairs. The color
Pin 8
Pin 1
Brown Pair
Green Pair
Orange Pair
Green Pair
Blue Pair
Blue Pair
Orange Pair
Brown Pair
Pin 1
Pin 8
Fig. 9, Standard “normal” CAT 5 cable
code extends well beyond that, but since we are only dealing with 4 pairs of wire, you don’t need to know the entire Bell
System color code for terminating a 900 pair distribution trunk...! What is often confusing is that the pair numbers do not line
up with the pin numbers on the RJ-45 connector. In other words, conductor ONE of the cable (White w/Blue Strip) is NOT
terminated to PIN ONE of the connector. The AT&T connecting standard always uses the middle pins for the first pair. After
that, they are staggered around, primarily to prevent crosstalk between adjacent pairs. For ethernet, and for use with the CAB
16, only the ORANGE and GREEN pairs are actually used. BUT...it is very important that you build the cable with ALL PAIRS
properly terminated. This will prevent any confustion later, and give your cable a solid mechanical connection.
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CAT 5 Cables
Remember, for ethernet, the BLUE and BROWN pairs are not used. The
ORANGE pair is transmit (TX), and the GREEN pair is receive (RX). There
is a positive and negative conductor for each pair, indicated by the color code.
Notice on the chart that the order of the wire pairs does not follow the con-
nector pins, as mentioned earlier. Don’t let that confuse you. The first wire of
a given pair is always the white wire with a colored stripe and is the positive
conductor. The corresponding colored wire with the white stripe is the nega-
tive conductor for that pair.
-
+
RX Pair
TX Pair
-
+
Pins (1-8)
Crossover Cables
Conductors
Normal CAT 5 cables are designed to connect the CAB™ 16 to a network
switch only. You cannot use this type of cable to connect a CAB 16 directly to
a MediaMatrix MM-DSP-cn DPU card. For that you need a “crossover” cable.
The pin assignments for a crossover cable, shown in parentheses on the chart,
apply to ONE END of the cable ONLY!
RJ-45 Shell
Conductor
Wire Pair Connector Pin Function
White w/blue stripe
Blue w/white stripe
White w/orange stripe
Orange w/white stripe
White w/green stripe
Green w/white stripe
White w/brown stripe
Brown w/white stripe
1
1
2
2
3
3
4
4
5
Not used
Not used
TX +
4
1 (3 x-over)
2 (6 x-over)
3 (1 x-over)
6 (2 x-over)
7
Jacketed Cable
TX -
RX +
RX -
Not used
Not used
8
Fig. 10, CAT 5 Wire/Connector cross reference chart, standard & crossover cable types.
Fig. 11, CAT 5 cable and RJ-45 termination details
Crossover cables are used to connect switches to other switches or CAB 16s directly to the DPU card. Also, a crossover cable is
what you would use if you were to connect a CAB 16 to another CAB 16, for use as a digital “snake”. A crossover cable is termi-
nated the same way as a normal cable, except that the TX and RX pins are "swapped" at one end to allow the transmit pair of
one device to connect to the receive pair of the other. Normally, this crossover action is done within the switch, which is why
you use a straight-through cable most of the time.
It is very easy to tell the difference between a crossover cable and a straight-through cable by looking at the conductors in the
RJ-45 connectors. If the wiring is identical at both ends, you are looking at a straight-through cable. If it is different, you most
likely have a crossover cable, or possibly, an incorrectly terminated cable. Look carefully at the color of the conductors.
It is important to note that some switches include “uplink” ports. These ports are intended to serve as a connection to another
switch. As such, the uplink port is wired to use a straight-through cable instead of requiring a crossover cable. On some switch-
es, uplink ports share their connection with an adjacent port, so be sure to read the manufacturer's instructions for proper use.
Pin 1
Pin 8
Brown Pair
Green Pair
Green Pair
Orange Pair
Blue Pair
Blue Pair
Orange Pair
Brown Pair
Pin 1
Pin 8
Fig. 12, CAT 5 “crossover” cable
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Link Connections
All CAB Series products feature built-in “Buddy Link” func-
tionality for creating backup I/O configurations in mission
critical systems. The term “Buddy Link” extends to multiple
dimensions within MediaMatrix, but in this context, we are
concerned only with how the built-in Buddy Link works with
CobraNet connection (Ethernet link status good), and it has
not experienced a fault, it generates a signal from its LINK
OUT connector which inhibits the secondary unit from tak-
ing over until there is a failure or fault.
the CAB 16 Series products. For more detailed information on The action of the switch-over is different for the CAB 16i and
how Buddy Link works with MediaMatrix and/or CobraNet™, the CAB 16o. In the case of the CAB 16i, input audio is pres-
please refer to our website, or to the resource list at the end of ent simultaneously at both units and both units will pass
this manual.
audio internally. You can see this by the duplication of audio
presence on the front panel meters. To prevent confusion
from duplicated audio signals in the system, the secondary
CAB 16i is prevented from transmitting onto the CobraNet
network by the action of the Buddy Link. Therefore, only one
Each CAB 16 Series product features rear panel, dual BNC
connectors labeled LINK IN and LINK OUT. These connec-
tors enable you to connect adjacent, CAB units for redundan-
cy and define the role of dual units. In this configuration, one set of audio inputs is present within the system at a time.
CAB is declared the primary and transmits data via its LINK
OUT connector. The other CAB is the secondary, or backup,
and receives data at its LINK IN connector. A high quality,
broadcast grade video cable, RG-59 with male BNC connec-
tors on each end is used to make the connection between the
primary and secondary CABs. A single cable is used for dual
CABs in this redundant configuration. The connection is
always LINK OUT (Primary) to LINK IN (Slave).
In the case of the CAB 16o, both units are simultaneously
active on the network, but the secondary unit’s audio output
is muted. This prevents an audio “collision” of duplicate audio
output signals at the amplifiers.
The Buddy Link feature also monitors the integrity of the
LINK CABLE. When using dual CAB 16is, a cable failure will
cause the secondary unit to take over transmission onto the
CobraNet network. When using CAB 16os, both units will be
active, and will simultaneously generate analog audio output,
resulting in gain and possible spectral distortion in the result-
ing combined signal.
Audio input (CAB 16i) or output (CAB 16o) signals should
appear at both units, in parallel, so if one fails, the redundant
unit will have the same connection. By nature of the Buddy
Link functionality, the secondary unit is always “off-line”
until needed and therefore the paralleling of the audio connec-
tions is of no consequence. (Exception 16d, see next page.)
The Buddy Link functionality can also be placed under soft-
ware control and is used in systems where remote access to
the link is required. (See the resource list at the end of this
manual for additional information on this topic.)
For this feature to work properly, both units must be config-
ured to use the same Audio Bundle number (p. 30-31). As
long as the primary unit is powered on, and it sees a good
Network Connection
Audio Input
CAB 16i Primary
CAB 16i Secondary or “Backup”
Fig. 13, CAB 16i Link Connection Example
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Link Connections
Network Connection Audio Output
CAB 16o Primary
CAB 16o Secondary or “Slave”
Fig. 14, CAB 16o Link Connection Example
Using the Link feature with the CAB™ 16d is basically the same as the other units, but there are several issues that must be con-
sidered when configuring the digital audio connections. It is not possible to “bus” or “Y” digital signals. An active distribution
method must be used or ideally, redundant digital audio should be sourced independently as shown in this example.
Network Connection
Redundant Audio Inputs
CAB 16d Primary
CAB 16d Secondary or “Backup”
NOTE: Using the Link Connectors
for creating redundancy is limited to
“dual” CAB units. Where addition-
al CABs are used, additional redun-
dant units must also be added.
Redundant Audio Outputs
Fig. 15, CAB 16d Link Connection Example
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CAB™ 16 Series User Manual
Setting the Hardware Base Address
Once you have a valid physical connection to the network port, you now must configure the port on both ends of the network
media to establish communications between the MediaMatrix software and the CAB 16. This is a critical configuration since
you will not be able to pass audio or enable communications without it. Please keep in mind that there are two separate set-
tings for successful communications on the CobraNet™ network. One is the Hardware Base Address, the other is the “Bundle”
which will be discussed in a separate section. First things first.....
The first step is to set your Hardware Base Address. Correctly setting
this ID will enable communications between the CAB 16 and its associ-
ated control panel, the “Taxi” device within MediaMatrix. On the front
panel of the CAB 16, there is a hardware base address switch. This
switch, which is actually 4 small rotary switches, is hidden behind a
small metal panel. This panel is held in place by two thumb screws.
Remove these screws to gain access to the hardware base address
switches. Refer to Fig. 16, Hardware Base Address Switches.
A Hardware Base Address has 4 digits. Acceptable values are in hex
and range from 0001 to 7FFF. From left to right, the four rotary switch-
Fig. 16, Hardware Base Address Switches
es represent your 4 digit Hardware Base Address number. If you look
carefully, there is a small arrow on each switch indicating the selected number. Using a small Phillips screwdriver, carefully set
each rotary switch to the desired number. You will feel a “click” as you move between digits. Be careful, and do not force the
switch.
The next step is to set the same address within the MediaMatrix software using the yellow CAB device, or as I mentioned earli-
er, the “Taxi”. The Taxi device represents the actual hardware, and there must be one Taxi for each physical CAB 16. In addi-
tion to this hardware address setting, the Taxi device includes the CAB 16’s analog controls and the CobraNet “Bundle” assign-
ment control for the CAB 16’s audio network channel. More on that later.
Now, let's set up the hardware address within the software and establish communications between the MediaMatrix and the
CAB 16. Refer to Fig. 17, “Hardware & Software Addressing Controls”.
(Ensure that you have the simple view shown in the section on page 11 constructed
and compiled for these steps. Refer to the MediaMatrix Help file for details on
MediaMatrix basics.)
Find the yellow box labeled CAB 16i or 16o.....the “Taxi”. Open the device by double-
clicking on it. In the upper right hand corner of this box is the Hardware Base
Address ID Control. This control has a 4-digit ID number which corresponds to
Control
the 4-digit Address ID on the actual CAB hardware. While in
Mode, set the Hardware Base Address to match (exactly) the 4-digit
address you set on the physical CAB 16 unit earlier. To do this, click
Control Mode
once (in
) on the address box and type your hex based
alpha-numeric ID number. When a valid number is entered, the green
ID LED next to the ID number should light, indicating that the ID
number you entered is valid.
Now you are ready to test your connection. If you have done everything
correctly, you should now have communications between the
MediaMatrix frame and the CAB 16. If so, the front panel TX and RX
LED’s will indicate traffic. You can further test the connection by test-
ing the functions of the CAB and verifying the response.
Fig. 17, Hardware & Software Addressing Controls
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Configuration
Setting the Audio Bundle
Now that you have established communications between the MediaMatrix software and the CAB™ 16 hardware, you will need
to prepare the network to pass audio. CobraNet™ is a powerful protocol that allows you to pass up to 64 channels (32 in by 32
out) of digital audio per MediaMatrix MM-DSP-cn Digital Audio Processing card to a practically unlimited number of CAB 8
and CAB 16 Series products.
The first order of business is to plan your system out. Good system design and careful planning of your resources, routing, pro-
cessing and distribution requirements will ensure a seamless installation of the audio network. You should have a systemic
method of assigning your hardware IDs and your Audio Bundles. For example, you may want to number all incoming audio as
odd numbered bundles, and outgoing audio as even numbered bundles. You may want to create a numbering scheme that syn-
chronizes the Hardware Base Address IDs with the Audio Bundles so that there is some consistency in the way your system
is identified.
Remember that in CobraNet, audio travels across the network in a Bundle*. This Bundle includes eight digital audio chan-
Input Block
Output
nels. These eight channels get into, and out of, the MediaMatrix processing engine via the CobraNet
and
Block
. If this is not clear to you, please go back and review the section entitled, “Hardware & Software Devices” and “The Test
View” earlier in this manual.
In order to get audio into the system, we have to set an Audio
Bundle number on a CobraNet Input Block. The number is a nor-
mal number and the range is OFF to 32,767. For switched net-
works, the number must be 256 or higher*. You do not need to be
concerned with additional zeros or other syntax. The number you
set is what you get. To set the Bundle Number, place your Control
Mode cursor over the pink box next to the Bundle label in the
CAB control device and type a number, any number, into the box.
Alternately, you may also gesture the number by holding down the
mouse button and dragging the control until the number you want
appears in the box. (Refer to
the MediaMatrix Help for
information on making this
control gesturable.)
Fig. 18, CobraNet Input and Output Controls (Bundle Numbers in the
OFF position)
To complete the process, this
same Bundle Number must also be set on the corresponding CAB 16 unit for each group of
Input Output Block
eight channels. In order to get audio from a given CobraNet
or
, the num-
bers must match in the blocks and the CAB 16 Taxi Device. The process for setting the
Fig. 19, CAB Device Audio Bundle
Number controls shown in the OFF posi-
tion.
Control Mode
Bundle Number in the Taxi Device is the same, and you must be in
. It is
important to note that there are two Bundle Numbers on CAB 16 products, one for each
set of eight audio channels.
That is pretty much it as far as setting up the CAB 16 to communicate and pass audio on the CobraNet network. There are
many additional variables in larger systems, but this is the basic configuration. What is very important to understand is the
relationship of the CAB device, the Taxi, and the CobraNet audio transport. If audio inputs are coming in on a CAB 16i and
Input Block
assigned to CobraNet Bundle 285, then a CobraNet
must be set to Audio Bundle 285 as well.
*NOTE: The Bundle Numbers referred to in this section assume the use of a switched (Unicast) network. Although it is pos-
sible, we do not recommend the use of hub-based (Multicast) networks with MediaMatrix systems. For more information on
using a Multicast network with CobraNet, please refer to page 37, Additional Information, and see the article on “Bundle
Assignments in CobraNet Systems”.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Testing, Testing.....
At this point, it is a good idea to see if everything is working. The example below is a good way to test your system and see
how everything relates. Hook up some tunes, an amp and a speaker and see if you hear anything. The audio should be clean
and clear. Listen for dropouts, distortion and other undesirable noises. If you hear any of this, especially dropouts, you've got a
problem. Also, take note of the action of the front panel status LEDs. There should be lots of green, and no red.
Hardware Base Address
“The Input Side, a CAB 16i”
assigned to “0c92”.
Analog Audio Input
“The Tunes”
CAB™ Audio Bundle set to
“285” at the Taxi AND the
CobraNet™ input block
100 BaseT Ethernet Switch
“The Processing, a
MediaMatrix System”
MediaMatrix
CobraNet
Network
Connector
(MM-DSP-cn)
MainFrame (shown
with 1-MM-DSP-cn
and 1-MM-DSP
cards)
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Testing
The premise here is to get audio to pass from one point to another. Audio input, the tunes, are fed via the CAB™ 16i. A Hardware
Base Address of “0c92” is assigned to the 16i and entered on the front panel of the unit, and its corresponding “Taxi” device inside
the software. The audio from the 16i is sent via CobraNet™ Audio Bundle 13 to the MediaMatrix MainFrame’s MM-DSP-cn DPU
Card via a standard 100BaseT Ethernet Switch. The audio is returned, through the processing of the MainFrame back to the net-
work on CobraNet Audio Bundle 12. The CAB 16o on the Output Side is set to receive Audio Bundle 12, and assigned a
HardWare Base Address of “221f”, both on its front panel and the corresponding “Taxi” device. The audio is then output from the
CAB 16o’s analog outputs. From there, it is amplified to a set of cool, high quality, 2-way loudspeakers. The result....Tunes!
Hardware Base Address
“The Output Side”
assigned to “221f”.
Analog Audio Output
CAB Audio Bundle set to
“286” at the Taxi AND the
CobraNet input block
CAT5 Cable (typ.)
“Tunes”
This simple view file is what lives “inside” the MediaMatrix Mainframe. It is very simple...input, process and output. In this
example, we are using a simple mixer in-between the I/O so we have some control and panning of the stereo signal. Of course,
additional processing could easily be added from the MediaMatrix Device menu.
“The Output Side”
“The Input Side”
“The Processing”
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Testing, Testing.....digital style!
When using the CAB 16d, a few additional considerations must be considered. The setup is basically the same, with the addi-
tion of the digital audio device within the CAB 16d’s Taxi device. In this example, we are showing audio sourced from digital
sources, a CD player and DAT recorder, both with AES or S/PDIF inputs and outputs. The audio signal is in the digital domain
throughout the signal flow.
Hardware Base Address
assigned to “0c92”.
“The Input Side”
AES3 or S/PDIF Digital
“Play Tunes”
Audio Output
CAB Audio Bundle set to
“285” at the Taxi AND the
CobraNet™ input block
100 Base T Ethernet Switch
“The Processing, a
MediaMatrix System”
MediaMatrix
CobraNet
Network
Connector
(MM-DSP-cn)
MainFrame (shown
with 1-MM-DSP-cn
and 1-MM-DSP
cards)
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Testing
Hardware Base Address
assigned to “221f”.
“The Output Side”
AES3 or S/PDIF
Digital Audio
Input
“Record Tunes”
CAB™ Audio Bundle set to
“286” at the Taxi AND the
CobraNet™ input block
CAT5 Cable (typ.)
“The Output Side”
“The Input Side”
“The Processing”
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Peavey has an extensive Technical Services Group that provides tech sup-
port, repair and implementation services. If you require assistance with your
new CAB 16, you can get help from several sources. There are many techni-
cal documents, white papers and application notes on our website and Peak
Audio’s website. (See the Additional Resources section on the next page for
details.) There are also brochures, data sheets and our newsletter, “Audio
Interactive”, published monthly. Also on our website are message board
forums that include questions and answers on all audio topics. This forum is
a great way to learn more about audio, Peavey products and system design
from other audio professionals around the world. You can also get help by
sending us an e-mail or posting a request on the message board. Finally, if
you still cannot get the information you need, don’t hesitate to call us. We
have extensive phone support services and will be happy to assist you. The
contact information for the Architectural Acoustics Division is shown
below:
Technical Support
Peavey Electronics Corp.
Architectural Acoustics Division
711 “A” St.
Meridian, MS 39301
USA
Phone: 601-483-5376
Fax: 601-486-1678
Please take a few minutes and fill out the warranty registration card for
your CAB 16. Although your warranty is valid without the registration, the
information you provide with the form is crucial to our support group. It
enables us to provide better service and customer support, and to keep you
informed of new product updates. Refer to the warranty statement in the
rear of this manual for details about what your warranty includes and what
the limitations are.
Warranty Registration
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Resources
Additional Resources
The use of the CAB™ 16 Series products, as well as MediaMatrix and networking technology require a thorough understanding
of several advanced topics. It is highly recommended that the designer acquire an understanding of these topics so that the
process of systems work is efficient and cost-effective.
There are several excellent sources for obtaining information regarding these topics. The resource list below represents the
most current documentation on the state-of-the-art as of the date of this printing (Fall 2000). The links are a part of the Peavey
Architectural Acoustics or Peak Audio websites. Additional information not listed below is also available. As in any high tech-
nology environment, this information is constantly under a state of flux. It is important to know what you are reading, the vin-
tage of your hardware and software and the application for which it is intended. Good documentation will almost always
ensure this, provided that it is read, comprehended and retained. We sincerely hope that you enjoy your new CAB Series prod-
uct and that you learn a lot in the process. Enjoy!
Tech Notes and General Audio:
Network Cabling, A Primer:
MediaMatrix product line:
Bundle Assignments in CobraNet Systems
Ray Rayburn, Peak Audio Inc.:
CobraNet™ products:
ments.htm
MediaMatrix Mainframe Series:
CobraNet and MediaConverters:
tm
MediaMatrix Miniframe Series:
Error Reporting in CobraNet Systems:
MediaMatrix X-Frame Series:
CobraNet Repeater Network Examples:
MediaMatrix Break-out Boxes:
CobraNet Technology
MediaMatrix DPU cards:
Richard Zweibel & Kevin Gross:
“How MediaMatrix Works”:
Digital Synchronization in CobraNet Systems:
MediaMatrix product comparisons:
Switched Network Design & Configuration:
udio.com/cobranet/examples.htm
Redundant Operation Support When Using CobraNet
MediaMatrix Help File (software download):
CobraNet on Switched Networks:
White Paper: Digital Audio Distribution Systems
Kevin Gross, Peak Audio Inc.:
Cobra Net Frequently Asked Questions (FAQ):
tribution.htm
Glossary Of Terms:
Common CobraNet Problems & Solutions:
Peavey Electronics Corp
Page 37
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CAB™ 16 Series User Manual
Specifications
MECHANICAL
Dimensions (H x W x D)
19" W x 12-7/8" D x 1-3/4" H (48.26 x 32.70 x 4.44 cm)
9.5 lbs. (4.3 kg)
Weight
Single EIA Space Rack Mount
Mounting
Connections
Removable “Euro” Connectors for each single channel of audio inputs and RS-485
bus. RJ-45 for CobraNet™ interface, BNC for link. IEC receptacle for AC power.
CAB 16i & CAB 16o PERFORMANCE
CAB 16i
CAB 16o
Frequency Response: +0 / -0.03 dBr, 20 ~ 20 kHz, referenced @ +0 / -0.3 dBr, 20 ~ 20 kHz, referenced @
1 kHz.
1 kHz.
Phase Response: +6 / -15 degrees at converter input
+10 / -18 degrees from converter output
20 ~ 20 kHz, referenced @ 1 kHz.
20 ~ 20 kHz, referenced @ 1 kHz.
THD + Noise: 0.005%, 22 kHz bandwidth measure-
ment, +4 dBu signal with 20 dB head-
room.
0.0035%, 22 kHz bandwidth measure-
ment, +4 dBu signal with 20 dB head-
room.
Dynamic Range: 108 dB / 110 dBA, 22 kHz filter band-
110 dB / 112 dBA, 22 kHz filter band-
width measurement.
width measurement.
Common Mode Rejection Ratio: 55 dB typ.
Any gain setting.
N/A
Crosstalk: -100 dB, 20 ~ 20 kHz, measured between -90 dB, 20 ~ 20 kHz, measured between
channel pairs (1-2, 3-4,…….15-16)
channel pairs (1-2, 3-4,…….15-16)
Maximum Input Sensitivity Settings: +30, +24, 18, +12 dBu, Less than 0.5 dB
N/A
error between settings
Full Scale Output Settings: N/A
+24, +18, +12, +6 dBu, Less than 0.5 dB
error between settings
Analog Gain Range: 97.5 to +30.5 dB, 1/2 dB steps, 0.05 dB
97.5 to +30.5 dB, 1/2 dB steps, 0.05 dB
maximum error
maximum error
Input/Output Impedance: 9.5k Ohms, minimum balanced circuit
102 Ohms, maximum balanced circuit
value at any setting
value at any setting
Analog LED Metering: 16 peak-reading headroom LED meters
analog level at input of A/D. Top-most
16 peak-reading headroom LED meters
output of D/A (CAB 16o). Top-most
LED indicates level 1 dB below clipping
LED indicates level 1 dB below clipping
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Specifications
CAB™ 16d PERFORMANCE SPECIFICATIONS
AES/EBU Input/Output Impedance: 102 Ohms Nominal,
Transformer balanced
Sample Rate Conversion Range: 32 kHz — 96 kHz
Sample rate convertor locks to any sample -
rate (within conversion range) presented at
the AES/EBU inputs
Maximum Signal Attenuation for AES/EBU input: -20 dB
Maximum Signal Rise/Fall time for AES/EBU input: 30 nS
AES/EBU Output Voltage: 5 Vp-p 110 Ohm load
CobraNet System Latency: 5.33 ms each direction
Conversion Delay (Inputs): .063 ms sample rate convertors
disabled. (0.917 + 45/Fsi) ms, sample rate convertors enabled
Fsi=input sample freq. (kHz)
AES/EBU Output Rise/Fall time: 6 nS 110 Ohm load
Audio Transmission Quantization Via CobraNet™: 20 or 24- Conversion Delay (outputs): .042 ms
bit CobraNet truncates to 20 bits unless used in reduced
channels mode
Master CPU Clock Speed: 12.288 MHz
DSP Cycles: 80 MHz
Digital Processing: 24-bit DSP's, 56-bit
accumulators
Digital Audio Channels Per Unit: 16 at 20-bit, 14 at 24-bit
Sample Rate: 48 kHz
GENERAL SPECIFICATIONS
A/D, D/A Quantization: 24-bit
Word-Clock Ports: 2 BNC I/O ports, 1 port with 2 multi-
drop connections
Audio Transmission Quantization on CobraNet: 20 or 24-
bit, CobraNet truncates to 20 bits unless used in reduced
channel mode
AC Power Range: 90 ~ 240 VAC, 47 to 63 Hz Universal
Power Supply
Digital Processing: 24-bit DSP's, 56-bit accumulators
Sample Rate: 48 kHz
AC Line Current: 300 mA (CAB 16i), 350mA (CAB 16o), 231
mA (CAB 16d)
Power Consumption: 29 W (CAB 16i), 31 W (CAB 16o), 15.6
W (CAB 16d) True power, based on the product of the actual
current flow & line voltage and then averaged
Master CPU Clock Speed: 12.888 Mhz
DSP Cycles: 80 Mhz
Power Dissipation: 99 BTU (25 kcal) (CAB 16i), 106 BTU
Digital Audio Channels per unit: 16 at 20-bit, 14 at 24-bit
(26.6 kcal) (CAB 16o), 54 BTU (13.4 kcal) (CAB 16d)
CobraNet I/O: 100 BaseT Ethernet, Uses standard 8-conduc-
Finish: Grey powder coat painted steel
tor RJ-45 jack
Agency Compliance Listings as of press time: UL, CUL, CE,
RS-485: 3-conductor half-duplex, 1 port with 2 multi-drop
and FCC part 15,A
connections
Notes:
6. All measurements are made with gain/attenuation set for unity
unless otherwise stated
7. Audio specifications for the CAB 16i are measured in the digital
domain after the signal has been transmitted through an Ethernet
switch and converted to AES format.
1. All specifications are typical for any channel(s).
2. All specifications are for AC line of 120 Volts rms.
3. All measurements are made via a CobraNet / AES signal path with
20-bit audio data transmit width.
4. All Cab16o measurements are made using 600 Ohm balanced loads
at 24 dBu full scale unless otherwise stated.
5. All Cab16i measurements are made using a 40 Ohm source imped-
ance at 24 dBu sensitivity unless otherwise stated.
8. Audio specifications for the CAB 16o are measured in the analog
domain. The test signal is generated digitally in AES format and
transmitted to the CAB 16o through an Ethernet switch.
Peavey Electronics Corp
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CAB™ 16 Series User Manual
Architectural Acoustics®
PEAVEY ELECTRONICS CORPORATION LIMITED WARRANTY
Effective Date: July 1, 1998
What This Warranty Covers
Your Peavey Warranty covers defects in material and workmanship in Peavey products purchased and serviced in the U.S.A. and Canada.
What This Warranty Does Not Cover
The Warranty does not cover: (1) damage caused by accident, misuse, abuse, improper installation or operation, rental, product modification or
neglect; (2) damage occurring during shipment; (3) damage caused by repair or service performed by persons not authorized by Peavey; (4)
products on which the serial number has been altered, defaced or removed; (5) products not purchased from an Authorized Peavey Dealer.
Who This Warranty Protects
This Warranty protects only the original retail purchaser of the product.
How Long This Warranty Lasts
The Warranty begins on the date of purchase by the original retail purchaser. The duration of the Warranty is as follows:
Product Category
Duration
MediaMatrix® DPU, (Excluding Frames), Cinema Processors,
Power Amplifiers, Pre-Amplifiers, Mixers,
Electronic Crossovers and Equalizers
2 years *(+ 3 years)
3 years *(+ 2 years)
2 years
Loudspeakers
Microphones
Speaker Components (including speakers, baskets, drivers,
diaphragm replacement kits and passive crossovers)
and all Accessories
90 days
[*Denotes additional warranty period applicable if optional Warranty Registration Card is completed and returned to Peavey by original retail purchaser
within 90 days of purchase.]
What Peavey Will Do
We will repair or replace (at Peavey's discretion) products covered by warranty at no charge for labor or materials. If the product or component
must be shipped to Peavey for warranty service, the consumer must pay initial shipping charges. If the repairs are covered by warranty, Peavey
will pay the return shipping charges.
How To Get Warranty Service
(1) Take the defective item and your sales receipt or other proof of date of purchase to your Authorized Peavey Dealer or Authorized Peavey
Service Center.
OR
(2) Ship the defective item, prepaid, to Peavey Electronics Corporation, International Service Center, 412 Highway 11 & 80 East, Meridian, MS
39301 or Peavey Canada Ltd., 95 Shields Court, Markham, Ontario, Canada L3R 9T5. Include a detailed description of the problem, together
with a copy of your sales receipt or other proof of date of purchase as evidence of warranty coverage. Also provide a complete return address.
OR
(3) All MediaMatrix® Frames needing repair, should be shipped, prepaid to Peavey Electronics Corporation, International Service Center, 412
Highway 11 & 80 East, Meridian, MS 39301.
Limitation of Implied Warranties
ANY IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIM-
ITED IN DURATION TO THE LENGTH OF THIS WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
Exclusions of Damages
PEAVEY'S LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED TO THE REPAIR OR REPLACEMENT OF THE PRODUCT, AT PEAVEY'S
OPTION. IF WE ELECT TO REPLACE THE PRODUCT, THE REPLACEMENT MAY BE A RECONDITIONED UNIT. PEAVEY SHALL NOT BE
LIABLE FOR DAMAGES BASED ON INCONVENIENCE, LOSS OF USE, LOST PROFITS, LOST SAVINGS, DAMAGE TO ANY OTHER
EQUIPMENT OR OTHER ITEMS AT THE SITE OF USE, OR ANY OTHER DAMAGES WHETHER INCIDENTAL, CONSEQUENTIAL OR OTH-
ERWISE, EVEN IF PEAVEY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may
not apply to you.
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
If you have any questions about this warranty or service received or if you need assistance in locating an Authorized Service Center, please con-
tact the Peavey International Service Center at (601) 483-5365 / Peavey Canada Ltd. at (905) 475-2578.
Features and specifications subject to change without notice.
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Features and Specifications subject to change without notice.
A product of Peavey Electronics Corporation
711 A Street / Meridian, MS 39301 / USA / (601) 483-5376 / FAX (601) 486-1678
Copyright 2000 All Rights Reserved
Printed in USA 4/2000
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