Aviom Musical Instrument MH10f User Manual

User Guide  
P/N 9310 1015 0002F rev. 1.0  
© 2007 Aviom, Inc.  
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WARNING!  
!
NO USER SERVICEABLE PARTS INSIDE  
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ONLY  
• To reduce the risk of fire or electrical shock, do  
not expose this product to rain or other types of  
moisture.  
• Operating Temperature: 10˚C to 50˚C (50˚F to 122˚F)  
CAUTION  
Risk of electric shock!  
Do Not Open  
WARNING!  
To reduce the risk of fire or  
electric shock do not expose  
this product to rain or moisture.  
AVIS: Risque de choc electrique!  
Ne pas ouvrir  
CAUTION:  
• Using any audio system at high volume levels  
can cause permanent damage to your hearing.  
• Set your system volume as low as possible.  
• Avoid prolonged exposure to excessive sound  
pressure levels.  
IMPORTANT:  
This equipment has been tested and found to comply with the limits for a  
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are  
designed to provide reasonable protection against harmful interference in  
a residential installation. This equipment generates, uses, and can radiate  
radio frequency energy and, if not installed and used in accordance with  
the instructions, may cause harmful interference to radio communications.  
However, there is no guarantee that interference will not occur in a particular  
installation. If this equipment does cause harmful interference to radio or  
television reception, which can be determined by turning the equipment off  
and on, the user is encouraged to try to correct the interference by one or  
more of the following measures:  
• Reorient or relocate the receiving antenna.  
• Increase the separation between the equipment  
and receiver.  
• Connect the equipment into an outlet on  
a
circuit different from that to which the receiver is  
connected.  
• Consult the dealer or an experienced radio/TV  
technician for help.  
Changes or modifications to the product not expressly approved by Aviom,  
Inc. could void the user’s FCC authority to operate the equipment.  
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Important Safety Instructions  
1. Read these instructions.  
2. Keep these instructions  
3. Heed all warnings.  
4. Follow all instructions.  
5. Do not use this apparatus near water.  
6. Clean only with a dry cloth.  
7. Do not block any ventilation openings. Install in accordance  
with the manufacturer’s instructions.  
8. Do not install near any heat sources such as radiators, heat  
registers, stoves, or other apparatus (including amplifiers) that  
produce heat.  
9. Do not defeat the safety purpose of the polarized or grounding-  
type plug. A polarized plug has two blades with one wider than  
the other. A grounding type plug has two blades and a third  
grounding prong. The wide blade or third prong is provided  
for your safety. If the provided plug does not fit your outlet,  
consult an electrician for replacement of the obsolete outlet.  
10. Protect the power cord from being walked on or pinched,  
particularly at plugs, convenience receptacles, and the point  
where they exit the apparatus.  
11. Only use attachments/accessories specified by the  
manufacturer.  
12. Use only with the cart, stand, tripod, bracket, or table specified  
by the manufacturer, or sold with the apparatus. When a  
cart is used, use caution when moving the cart/apparatus  
combination to avoid injury from tip-over.  
13. Unplug this apparatus during lightning storms or when unused  
for long periods of time.  
14. Refer all servicing to qualified personnel. Servicing is required  
when the apparatus has been damaged in any way, such as  
when the power-supply cord or plug is damaged, liquid has  
been spilled or objects have fallen into the apparatus, the  
apparatus has been exposed to rain or moisture, the unit does  
not operate normally, or it has been dropped.  
15. The solid line over dashed line symbol (  
the input voltage must be a DC voltage.  
) indicates that  
16. The box within a box symbol (  
power supply is double insulated.  
) indicates that the external  
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Warranty Information  
Please record the following information for future reference:  
Your Authorized Aviom Dealer:  
Name:  
Address:  
Phone:  
Serial Number of Your Aviom Product:  
Date of Purchase:  
Your Authorized Aviom Dealer is your primary source for service  
and support. The information recorded above will be helpful in  
communicating with your Authorized Aviom Dealer should you need to  
contact Aviom Customer Service. If you have any questions concerning  
the use of this unit, please contact your Authorized Aviom Dealer  
first. For additional technical support, check the Aviom website at  
To fulfill warranty requirements, your Aviom product should be serviced  
only at an authorized Aviom service center. The Aviom serial number  
label must appear on the outside of the unit, or the Aviom warranty is  
void.  
This manual and its contents are copyrighted by Aviom, Inc. All rights  
are reserved by Aviom, Inc. This document may not, in whole or in part,  
be copied, photocopied, reproduced, translated, or reduced to any  
electronic medium or machine-readable form without prior written  
consent from Aviom, Inc.  
The software and/or firmware contained within Aviom products is  
copyrighted and all rights are reserved by Aviom, Inc.  
Although every effort has been made to ensure the accuracy of the text  
and illustrations in this manual, no guarantee is made or implied as to  
the accuracy of the information contained within.  
v
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Aviom, Inc. Limited Warranty  
Aviom, Inc. warrants this product against defects in materials and workmanship  
for a period of one year from the date of the original retail purchase.  
This warranty does not apply if the equipment has been damaged due to  
misuse, abuse, accident, or problems with electrical power. The warranty also  
does not apply if the product has been modified in any way, or if the product  
serial number has been damaged, modified, or removed.  
If a defect is discovered, first write or call Aviom, Inc. to obtain a Return  
Authorization number. No service will be performed on any product returned  
without prior authorization. Aviom, Inc. will, at its discretion, repair or replace the  
product at no charge to you. The product must be returned during the warranty  
period, with transportation charges prepaid to Aviom, Inc., 1157 Phoenixville  
Pike, Suite 201, West Chester, PA 19380, USA. You must use the product’s original  
packing materials for shipment. Shipments should be insured for the value of  
the product. Include your name, address, phone number, description of the  
problem, and copy of the original bill of sale with the shipment. The Return  
Authorization number should be written on the outside of the box.  
THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. YOU MAY HAVE  
OTHER RIGHTS, WHICH VARY FROM STATE TO STATE (OR JURISDICTION TO  
JURISDICTION). AVIOM’S RESPONSIBILITY FOR MALFUNCTIONS AND DEFECTS  
IN HARDWARE IS LIMITED TO REPAIR AND REPLACEMENT AS SET FORTH IN THIS  
LIMITED WARRANTY STATEMENT. ALL EXPRESS AND IMPLIED WARRANTIES FOR  
THE PRODUCT, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN  
DURATION TO THE WARRANTY PERIOD SET FORTH ABOVE. NO WARRANTIES,  
WHETHER EXPRESS OR IMPLIED, WILL APPLY AFTER SUCH PERIOD.  
AVIOM, INC. DOES NOT ACCEPT LIABILITY BEYOND THE REMEDIES SET FORTH  
IN THIS LIMITED WARRANTY DOCUMENT. AVIOM, INC.’S LIABILITY IS LIMITED TO  
THE REPAIR OR REPLACEMENT, AT OUR OPTION, OF ANY DEFECTIVE PRODUCT,  
AND SHALL IN NO EVENT INCLUDE INCIDENTAL OR CONSEQUENTIAL DAMAGES  
OF ANY KIND.  
SOME STATES DO NOT ALLOW EXCLUSIONS OR LIMITATION OF IMPLIED  
WARRANTIES OR LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO  
THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.  
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Table of ConTenTs  
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Welcome  
This User Guide is designed to familiarize you with the features and  
functions of your new Pro64™ product. In developing the Aviom  
Pro64 Series product line, we have made every effort to make the user  
interface as easy to use and understand as possible. We encourage you  
to read the manual completely, as some of the powerful features of your  
new product may not be immediately apparent.  
This document is a combined User Guide for the MH10 and MH10f  
Merger Hubs, which have many features in common. Differences in  
functionality will be called out as needed.  
Features  
The MH10 and MH10f Merger Hubs are designed to merge and distribute  
A-Net® data streams and provide a host of professional features  
designed to make audio networking with Pro64 Series products easy to  
set up and configure in a variety of professional audio situations.  
MH10 Merger Hub features:  
• Ten bidirectional A-Net ports  
• Ten EtherCon® RJ45 network connectors  
• Three Manual Mode configurations  
MH10f Merger Hub features:  
• Ten bidirectional A-Net ports  
• Eight EtherCon® RJ45 network connectors  
• Two SFP fiber optic ports  
• Three Manual Mode configurations  
Multiple MH10 and/or MH10f Merger Hubs can be used when creating a  
Pro64 audio network.  
The EtherCon Connector  
Pro64 Series products feature locking connectors for all network I/O.  
The Neutrik® EtherCon connector is a dual RJ45-type connector that can  
receive a standard Category 5e cable or a cable fitted with the special  
locking EtherCon connector.  
When using a standard Cat-5e cable, plug the cable into the center of  
the EtherCon jack; release the cable by pressing on the small plastic tab  
built into the cable connector.  
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The locking EtherCon connector is similar to an XLR plug, the kind  
commonly used on microphone cables. Insert an EtherCon-equipped  
cable into the jack until it clicks and locks in place. To remove the cable,  
press on the metal release tab at the top of the panel-mounted EtherCon  
jack and pull the connector outward.  
The SFP Module  
The MH10f Merger Hub ships with two 100 Mbps SFP format fiber optic  
ports (9 and 10) which allow the user to connect optional single-mode  
or multi-mode fiber optic transceivers that can transmit A-Net data over  
longer distances than Cat-5 cabling can provide.  
Small form-factor pluggable (SFP) is a specification for a series of  
modular optical transceivers. The transceivers are designed to be  
physically compact, and can be hot swapped. The SFP connector allows  
the user to reconfigure the MH10f with single- or multi-mode fiber optic  
transceivers as needed. Always leave the dust cap on when the SFP  
module is not in use to avoid damage to the optical connections.  
The SFP transceiver module shown with its dust cap on (left) and from  
the front with transmit and receive connectors exposed.  
Using fiber optic connections will require a minimum of two MH10f units.  
Always use the same type of SFP module in each unit—for example, use  
100 Mbps multi-mode SFP transceivers with the same light wavelength  
specifications in each MH10f. Gigabit (1 Gbps) SFP transceivers are not  
supported.  
The LC Connector  
SFP modules typically use a connector known as LC. For bidirectional  
transmission, two fiber cables per SFP module are required, one to  
transmit and the other to receive. The SFP module can accept single  
(simplex) or dual (duplex) type connectors. Aviom suggests using  
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duplex connectors with the MH10f to avoid transmit/receive errors  
caused by the removal of individual fiber cables.  
A simplex LC connector (left) and a duplex connector (right).  
Cat-5e  
All Cat-5e connections between A-Net devices should use Unshielded  
Twisted Pair (UTP) cable. The cable can be of the stranded or solid type;  
solid wire performs better over long distances while stranded wire is  
more flexible and easier to manipulate and therefore easier to work  
with in a performance situation.  
Cables designated as Cat-5e in Pro64 documentation can be  
interchanged with any Cat-6 (or better) cable. Cables will be referred to  
simply as “Cat-5e.”  
Connectors on Cat-5e cables can be of the standard RJ45 variety or of  
the locking Neutrik EtherCon type.  
Firmware Update  
The Pro64 firmware can be updated in the field using a PC and the  
Pro64 Update Tool. Modules can be updated over A-Net, while part of  
an active audio network, or in local mode where no other modules are  
connected at the time the update is being performed (such as may be  
required for a bench configuration when setting up modules prior to  
installation).  
Updating a module requires the Aviom Pro64 Update Tool application, a  
PC host computer with RS-232 connection capability, a null modem DB9  
cable, and the update file for the particular Pro64 device being updated.  
Refer to the Aviom website for information about the availability of the  
latest firmware upgrades and feature updates.  
The MH10 or MH10f must be connected to another Pro64 device with  
Virtual Data Cable™ capability in order to be updated.  
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About A-Net  
Aviom’s A-Net® is the only networking technology conceived, designed,  
and optimized for managing and distributing audio using ordinary  
Cat-5e cables. As implemented in the Pro64™ Series products, A-Net  
can transmit up to 128 channels of uncompressed 24-bit audio with the  
reliability and fidelity of analog, and the power and flexibility of a true  
digital network.  
Pro64 A-Net allows variable sample rates in three ranges, from 44.1kHz  
to 192kHz , with ultra-low latency, jitter, and wander. Pro64 devices  
can be connected in any combination of serial (daisy-chain) or parallel  
(star) topologies. Cable runs between Pro64 devices can be up to 400  
feet (120 meters) on Cat-5e1, and miles on fiber optics (with Aviom fiber-  
capable equipment).  
Because A-Net is designed specifically for audio, the technological  
limitations of Ethernet and Ethernet-based products are removed,  
while audio performance and system flexibility are increased. A-Net  
incorporates Aviom’s unique patented and patent-pending algorithms  
for controlling clock jitter and wander, as well as system-wide latency—  
regardless of an installation’s size, design, or clocking setup. A-Net  
offers significant advantages in fidelity, performance, and flexibility  
over Ethernet-based products.  
A-Net uses the “physical” layer of Ethernet, but it eliminates all the  
protocol elements that are designed for computers and IT-style  
networking. In audio applications, these other layers reduce efficiency,  
impose system restrictions, and introduce latency and timing instability.  
By eliminating Ethernet data structures, A-Net creates a superior  
network, with enhanced audio performance. With A-Net and the  
Pro64 Series, Aviom continues to break new ground in the design and  
development of innovative digital audio networking technologies and  
solutions.  
Pro64 Series Supported Sample Rates  
Sample Rate  
Minimum  
39.7kHz  
Maximum  
52kHz  
1x 44.1/48kHz  
2x 88.2/96kHz  
4x 176.4/192kHz  
79.4kHz  
104kHz  
208kHz  
158.8kHz  
Cat-5e, Cat-6, or better, Unshielded Twisted Pair (UTP) cable  
4
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Clocking  
The Pro64 network offers the most flexible clocking and synchronization  
options in the industry. Pro64 devices support three ranges of variable  
sample rates, from 44.1/48kHz to 192kHz . Because no sample rate  
converters are used, audio transmission is kept fast and clean, eliminating  
the audio artifacts and signal degradation inherent to sample rate  
conversion—even when syncing to an external clock source.  
Any Pro64 I/O module can be designated the Clock Master for the  
network, generating and distributing its internal clock. Digital I/O  
modules are capable of syncing to and distributing an external clock  
from a Word Clock or AES3 source.  
Control Data  
The Pro64 Series has built-in, dedicated bandwidth for 14 channels of  
non-audio control data through the use of Aviom’s innovative Virtual  
Data Cables™. These data streams are always available to carry MIDI,  
RS-232, RS-422, or GPIO (General Purpose I/O), and they never compete  
with the audio channels for network resources, regardless of the system  
configuration. (Not all VDC™ data types are supported on every Pro64  
module.)  
Because VDC inputs are simply incorporated into the A-Net stream,  
these control signals can be transmitted over very long cable runs  
and even across an entire Pro64 network, significantly expanding the  
applications possible with MIDI, RS-232/422, and GPIO. And as with  
audio signals, VDC control data can be input anywhere and output  
anywhere else in the network.  
A-Net Ports  
Pro64 I/O modules have dual A-Net ports, labeled A and B. Both ports  
carry a bidirectional A-Net stream at all times. (That is, both ports are  
always transmitting and receiving A-Net data.) Pro64 networks can be  
configured in one of two operational modes, Auto Mode or Manual  
Mode, depending on the requirements of a particular system.  
In Auto Mode, there are no connection rules; connect a Cat-5e cable to  
either the A or B port and the system does the rest. Auto Mode provides  
a true audio network with 64 available “Slots” for transporting audio (at  
44.1/48kHz). Every audio Slot is available everywhere in the system, with  
no upstream/downstream restrictions.  
In Manual Mode, the Pro64 network becomes a 64x64 system (at 48kHz),  
similar to a traditional stage-to-FOH snake. At every point in the Manual  
About A-Net  
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Mode network, two 64-channel streams are available on the cable and  
in each module. The configuration of the cables and ports has an impact  
on the makeup of the network and the distribution of audio signals. The  
user can direct A-Net data from an input module to a specific port (A,  
B, or both). Output modules can be configured to output audio signals  
from a specific port (A or B).  
Support For Pro16 Series Products  
Pro64 Series products can be combined with Pro16™ Series output  
products such as the Pro16 Monitor Mixing System by adding the Pro64  
ASI A-Net Systems Interface. This 1U module converts Pro64 data to  
Pro16 data, providing up to four streams of 16-channel data (depending  
on the Pro64 sample rate) that can be used with A-16II and A-16R  
Personal Mixers, A-Net Distributors, and AN-16/o Output Modules. The  
ASI is not compatible with the A-Net output of Pro16 input devices such  
as the AN-16/i, AN-16/i-M, the Y1 console interface card (for Yamaha  
digital products) and D-16c card (for DiGiCo® digital products).  
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AC Power  
Always plug the unit into a properly grounded (earthed) outlet. Always  
use the AC line cord that was shipped with the unit. Grasp the power  
cable by the connector and never by the cord itself when connecting  
and disconnecting it from the power source.  
Do not expose the Pro64 device to moisture, rain, or excessively damp  
environments.  
AC Line Conditioning  
Aviom products are digital devices and as such are sensitive to sudden  
spikes and drops in the AC line voltage. Changes in the line voltage  
from lightning, power outages, etc. can sometimes damage electronic  
equipment.  
To minimize the chance of damage to your equipment from sudden  
changes in the AC line voltage, you may want to plug your equipment  
into a power source that has surge and spike protection. Power outlet  
strips are available with built-in surge protection circuits that may help  
protect your equipment.  
Other options for protection of your equipment include the use of an  
AC line conditioner or a battery backup system (sometimes referred to  
as an uninterruptible power supply, or UPS).  
Rack Mounting  
Pro64 products are designed to be mounted in a 19-inch equipment  
rack. The rack ears on each side of the device are designed to support  
the weight of the product without additional hardware. Each rack ear  
contains holes for two screws per side. Always support the unit with all  
four screws to avoid damage to the unit.  
To rack mount the Pro64 product, position it in the equipment rack at  
the desired location. Use standard rack-mounting screws (10-32 size) to  
attach the unit to your rack hardware. Tighten all four screws firmly, but  
avoid overtightening.  
Aviom suggests the use of non-metallic washers between the rack-  
mounting screws and the device’s finished surface to avoid marring the  
finish on your Aviom products.  
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Ventilation  
Always allow adequate ventilation for devices mounted in equipment  
racks. Avoid placing your Pro64 product directly above or below other  
rack-mounted devices that produce high levels of heat, such as power  
amplifiers.  
Cleaning  
Before cleaning a Pro64 product, turn off the power switch and unplug  
the unit from the AC power source.  
To clean the surface of the Pro64 product use a clean, soft lint-free cloth  
that has been slightly moistened with water only. For tougher dirt, use a  
cloth slightly dampened with water or with a mild detergent. Always be  
sure to dry the surface of the unit before proceeding with use.  
When cleaning your Aviom products, never spray cleaners directly onto  
the product surfaces. Instead, spray a small amount of the cleaning  
solution onto a clean cloth first. Then use the dampened cloth to clean  
the product.  
Never use solvents or abrasive cleaners on the finished surfaces of your  
Aviom products.  
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Front Panel Components  
The front panel components of the MH10 and MH10f are identical; the  
MH10 is shown in the diagrams below.  
1. Auto Mode LED  
2. Manual Mode LED  
3. Manual Mode configuration (A, B, C) indicator  
4. Active A-Net port LED  
5. A-Net LED  
6. Managed Mode LED  
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MH10 Rear Panel  
1. Power On/Off Switch  
2. IEC Power Inlet  
3. Fuse Holder  
4. A-Net ports, EtherCon connectors, 10x  
5. Manual Mode configuration selector button  
6. Manual Mode configuration LED  
ꢀ0  
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MH10f Rear Panel  
1. Power On/Off Switch  
2. IEC Power Inlet  
3. Fuse Holder  
4. Backup DC Power Inlet, 4-pin XLR  
5. Manual Mode configuration selector button  
6. Manual Mode configuration LED  
7. A-Net ports, SFP connectors, 2x  
8. A-Net ports, EtherCon connectors, 8x  
ꢀꢀ  
reAr PANel coMPoNeNts  
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Front Panel Features  
This section describes the features and functions of all front-panel  
components of the MH10 and MH10f Merger Hubs.  
Network Mode Indicator  
The mode LED lights to display the current network mode, which can be  
set to Auto or Manual at the network’s Control Master. When the Pro64  
network is operating in Auto Mode, the red Auto LED will be lit. In Auto  
Mode, no user settings are available on the MH10/MH10f; all ten A-Net  
ports function identically. It does not matter which rear-panel A-Net  
port is used when connecting Pro64 devices to the network.  
One network mode is always selected. Here, the network is in Auto  
Mode; the Auto LED is lit.  
In Manual Mode, the user has the option of directing A-Net data to either  
or both A-Net ports on input modules that are part of the network. Once  
the network has been set to operate in Manual Mode, the red Manual  
LED and one of the yellow configuration LEDs will be lit on the MH10/  
MH10f.  
By choosing one of the three Manual Mode configurations, A-Net digital  
streams can be routed in different ways to accomplish a variety of audio  
distribution tasks. (One configuration is always selected by default.)  
Three Manual Mode configurations are available:  
A Merge All — Merges all incoming A-Net data and  
distributes this merged stream of data to all 10 ports  
(this is the same as Auto Mode).  
B Merge 1-9 — Merges incoming A-Net data from  
ports 1-9 to a single stream and distributes this merged  
Pro64 stream to port 10 only.  
Pro64 data streams arriving at port 10 are distributed  
ꢀꢁ  
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out to ports 1-9.  
C Merge 1-8 — Merges the incoming A-Net data  
from ports 1-8 to one stream and distributes the  
merged data to ports 8-10. A redundant data path is  
created when either two MH10 (Cat-5e) or two MH10f  
(fiber) units are connected together via ports 9 and 10.  
Port 8 is special when configuration C is used. It inputs  
data to the Merger function and outputs the complete  
merged 64-channel stream, providing a local digital  
split of all inputs.  
Incoming A-Net data streams from ports 9 and 10 are  
distributed to ports 1-7.  
A-Net Port LEDs  
Valid A-Net data connected to any of the rear-panel A-Net ports is  
indicated by a lit A-Net activity LED on the front panel.  
The activity LED lights to indicate the presence of a valid A-Net stream.  
Ports 4, 6, 7, and 9 are shown as active.  
A-Net LED  
The blue LED found within the A-Net logo functions as the network  
activity indicator. When a module is powered up, its A-Net LED will flash  
while a request to enter the network is sent to and then processed by  
the Control Master. Once a module is enumerated and is part of the  
Pro64 network, the blue A-Net LED will light solidly.  
The blue A-Net LED is also used during the firmware update process.  
Firmware updates on an MH10/MH10f must be initiated from another  
Pro64 device which has VDC capability.  
ꢀꢂ  
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The A-Net LED lights when a Pro64 device is active on a Pro64 network.  
Managed Mode LED  
Managed Mode puts the network under control of a computer for  
firmware updates, system monitoring, etc. Managed Mode can only be  
entered from the network’s Control Master.  
When the network is placed under control of a computer, the Managed  
LED will light on all modules in the network.  
The Managed LED is for information only. No user settings are available  
on the MH10/MH10f for Managed Mode.  
ꢀ4  
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Rear Panel Features  
All MH10/MH10f rear-panel features and functions are described in this  
section. Individual differences between the MH10 and MH10f will be  
called out as needed.  
AC Power  
Pro64 modules use switching power supplies that can operate at 100-  
240V and from 50-60Hz, meaning that they can be used with most of  
the world’s AC power systems by simply changing the line cord. The  
MH10/MH10f is equipped with a standard grounded IEC power inlet  
(with fuse) which can accept the interchangeable IEC power cord.  
Access the fuse by pressing on the spring-loaded hatch beneath the  
AC power inlet.  
Fuse  
The fuse holder is spring-loaded and has space for two fuses, one main  
and one spare (optional). Press the fuse holder cover to access the fuse.  
When checking or replacing a fuse, always power off the Pro64 unit and  
remove the line cord from the AC power source.  
Always replace the fuse with one of the same rating as that being  
changed.  
Backup DC Power - MH10f  
For applications where a backup power source is required, the MH10f  
is equipped with a backup DC power inlet using a locking 4-pin XLR  
jack. A DC power supply capable of outputting 24VDC 5% at 1 amp is  
required. In the locking XLR plug, connect pin 1 to ground and pin 4 to  
the 24VDC supply.  
ꢀꢃ  
reAr PANel FeAtures  
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The MH10f can be powered via its internal power supply or an optional  
external 24 volt supply.  
Both internal AC and external DC power sources can be connected  
simultaneously.  
A-Net Ports  
Ten EtherCon jacks are provided for A-Net connections on the MH10,  
numbered 1 to 10. The MH10f has eight EtherCon jacks. Connections  
can use standard RJ45 cables or cables outfitted with the locking  
Neutrik EtherCon connector.  
In addition to the eight EtherCon jacks, the MH10f has two 100 Mbps  
SFP fiber optic ports, which are numbered 9 and 10.  
The actual functionality of the ten ports on a Merger Hub is determined  
by the current network mode (Auto or Manual) and the setting of the  
Manual Mode configuration when using Manual Mode.  
In Auto Mode, all ten A-Net ports perform the same function.  
Cables from any compatible Pro64 device can be plugged into any  
available port. Multiple MH10 or MH10f units can be used simply by  
interconnecting them using an available A-Net port. There is no need to  
match MH10/MH10f port numbers (port 1 connected to port 1, etc.).  
The MH10f (shown) has eight EtherCon and two SFP fiber connectors.  
The ten A-Net ports on the MH10 each have EtherCon connectors.  
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Manual Mode Configuration Button  
In Manual Mode, the MH10/MH10f can be set to merge and distribute  
A-Net data from different combinations of ports, making signal routing  
easy. The functionality of the ports is determined by the setting of the  
Manual Mode Configuration.  
One configuration is always selected (its LED is lit), even if the network is  
operating in Auto Mode.  
One Manual Mode Configuration LED is always lit.  
Press the MAnuAl Mode ConfigurAtion button to cycle through the  
three options (A, B, or C). The LED next to the selected configuration will  
be lit regardless of the current network mode that is being used. When  
Manual Mode is selected at the Control Master, the selected Manual  
Mode Configuration is automatically applied. The corresponding LED  
on the front panel of the MH10/MH10f will also light when Manual Mode  
is active.  
When multiple MH10/MH10f Merger Hubs are used in a network, note  
that each can be configured as needed, making complex Manual Mode  
networks easy to set up.  
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MH10 Configurations  
The MH10/MH10f has two functional sections, the Merger, which  
combines A-Net data streams as they arrive at the MH10/MH10f, and the  
Hub section, which distributes the combined data. These subsections  
are part of the internal structure of the MH10/MH10f and are not  
individually configurable.  
It is important to remember that each A-Net cable in a Pro64 network  
carries two streams of data, one in each direction at all times. Each  
A-Net port on the MH10/MH10f is always contributing its data to the  
Pro64 data stream (as in the case of a 6416i Input Module, for example)  
while at the same time distributing the network data.  
The MH10/MH10f provides three preset configurations (labeled A, B, and  
C) for routing the digital audio and Virtual Data Cable (VDC) content of  
the A-Net streams received at its ten ports in Manual Mode. Each MH10  
or MH10f Merger Hub in a network can be set individually to one of the  
three configurations, which is especially powerful when configuring  
Manual Mode networks.  
Auto Mode  
In Auto Mode, audio and VDC data received from the ten A-Net streams  
are merged into a single stream, which is then distributed through the  
transmitted streams to all ten ports.  
In the simplified example that follows, two cables connected to two  
ports on an MH10/MH10f are shown. The upper cable in the diagram  
sends inputs 1-16 into the merger; the lower cable sends inputs 17-32.  
As channels from the individual input modules reach the MH10/MH10f,  
they are combined by the merge function. The combined multi-channel  
stream is then transmitted out of each port of the MH10. Any Pro64  
device connected to any port can make use of every audio signal in the  
network.  
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Inputs 1-16  
Outputs  
1-32  
+
Inputs 17-32  
Data enters the MH10, is merged, and is then distributed.  
The merge functionality within the MH10/MH10f creates a single unified  
data stream from all incoming A-Net ports. The following block diagrams  
illustrate the routing of A-Net signals in Auto and Manual Modes. It is  
important to remember that the Receive and Transmit sections shown  
are part of each port on the MH10/MH10f  
A-Net Receive  
(Ports 1-10)  
A-Net Transmit  
(Ports 1-10)  
Merger  
Distributor  
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10  
10  
Auto Mode and Manual Mode Configuration A  
In Auto Mode, all ports on an MH10/MH10f have the same functionality;  
they will accept digital audio inputs and VDC data and then transmit a  
combined data stream with all audio and VDC data.  
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Manual Mode  
Three signal routing configurations are available on each MH10/MH10f  
when the network is running in Manual Mode.  
Configuration A (Merge All)  
Manual Mode Configuration A (Merge All) functions similarly to Auto  
Mode. For digital splits and data copies, Manual Mode Configuration A  
is ideal.  
Configuration B (Merge 1-9)  
This configuration is well suited for a basic digital snake using only one  
MH10 Merger Hub, or as a basic snake using two MH10f units when the  
redundancy and local digital split functionality of Configuration C are  
not required.  
A-Net Receive  
(Ports 1-10)  
A-Net Transmit  
(Ports 1-10)  
Merger  
Distributor  
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10  
10  
Manual Mode Configuration B  
In Manual Mode Configuration B (Merge 1-9), audio from the Pro64  
streams received at ports 1-9 are merged into a single stream, which is  
transmitted out port 10. The stream received at port 10 is distributed  
out ports 1-9. VDC data from all ten ports are merged, as in Auto Mode.  
Configuration B Example 1  
The following stage-to-FOH example shows a digital snake at 48kHz  
with 64 inputs and 16 return lines, incorporating one MH10. (The MH10f  
cannot be used in this example since port 10 is configured with a fiber  
optic connector that needs to be connected to a second MH10f to  
transmit/receive A-Net data.)  
The 64 inputs (mic, line-level, or/or digital) originating on the stage  
enter the MH10 at ports 1-4 (marked as “Stage Inputs”). The audio inputs  
are merged in the MH10 and a 64-channel stream is sent out of port 10.  
One Cat-5e cable spans the distance from stage to the front-of-house  
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mixer. Port 10 is connected to a group of four output modules or Pro64  
console interface cards (such as the 6416Y2 card for Yamaha® digital  
products) at FOH which are connected to the mixing console (marked  
as “Stage Outputs”).  
The engineer creates mixed audio for the speakers, amps, and processing  
devices and connects this audio to the input module marked “FOH  
Returns 1-16 In.” These channels appear at outputs 1-9 of the MH10.  
One output module is shown (“FOH Returns 1-16 Out”), but by adding  
more output modules, digital splits are easy to create.  
STAGE  
1
2
Stage Inputs 1-16  
Stage Inputs 17-32  
Stage Inputs 33-48  
Stage Inputs 49-64  
3
FOH  
4
FOH Returns 1-16 In  
5
6
Stage Outputs 1-16  
Stage Outputs 17-32  
Stage Outputs 33-48  
Stage Outputs 49-64  
7
FOH Returns 1-16 Out  
8
9
10  
A 64x16 digital snake using only one MH10 Merger Hub  
Configuration B Example 2  
Adding more input modules at the FOH position allows the engineer to  
create content for monitoring, recording, broadcast, etc.  
In this example, inputs from the stage and their associated outputs at  
the front-of-house position are unchanged, as are the returns from FOH  
to the processors and amps from the previous example.  
Two additional input modules at front-of-house are used to send two  
streams of monitor content to the stage area for performers. Here an  
ASI A-Net Systems Interface is used to create two streams of Pro16 data  
for use with A-16II and A-16R Personal Mixers. The digital snake is now  
configured as 64x48.  
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STAGE  
FOH  
1
2
Stage Inputs 1-16  
Stage Inputs 17-32  
Stage Inputs 33-48  
Stage Inputs 49-64  
FOH Returns 1-16 In  
Monitor Sends 17-32  
Monitor Sends 33-48  
3
4
5
6
Stage Outputs 1-16  
Stage Outputs 17-32  
Stage Outputs 33-48  
Stage Outputs 49-64  
FOH Returns 1-16 Out  
ASI  
7
8
9
10  
Pro16  
Pro16  
Monitors 1 Monitors 2  
Cat-5e Cable  
This 64x48 digital snake uses one MH10 Merger Hub. Input and  
output modules at the FOH position are connected serially. The  
ASI (connected to port 8) translates Pro64 data for use with Pro16  
monitoring devices.  
Again, any of the ports numbered 1-9 on the MH10 can be connected to  
additional Pro64 devices for splits. Remember that any output devices  
connected in series to any Pro64 device already connected to the MH10  
can also output the content coming from the FOH engineer.  
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Configuration B Example 3  
This example substitutes a pair of MH10f hubs for the single MH10 in  
the previous diagram. Fiber optic cable is also substituted for the Cat-5e  
cable used between stage and FOH positions.  
STAGE  
FOH  
1
2
1
2
Stage Inputs 1-16  
Stage Inputs 17-32  
Stage Inputs 33-48  
Stage Inputs 49-64  
FOH Returns 1-16 In  
Monitor Sends 17-32  
Monitor Sends 33-48  
3
3
4
4
5
5
Stage Outputs 1-16  
Stage Outputs 17-32  
Stage Outputs 33-48  
Stage Outputs 49-64  
6
6
FOH Returns 1-16 Out  
ASI  
7
7
8
8
9
9
10  
10  
Pro16  
Pro16  
Monitors 1 Monitors 2  
Fiber Optic Cable  
This variation of the 64x48 digital snake example uses two MH10f  
hubs and fiber optic cabling.  
Configuration C (Merge 1-8)  
Manual Mode Configuration  
C
is optimized for use with two  
MH10/MH10f Merger Hubs, typically with each placed on one side of a  
digital snake. In Manual Mode Configuration C (Merge 1-8), ports 9 and  
10 serve as a redundant pair, with one port available as a backup when  
two MH10/MH10f units are used. Audio from the A-Net streams received  
at ports 1-8 are merged into a single stream, which is transmitted out  
port 8, as well as port 9 or 10. Audio data received at ports 9 and 10 are  
distributed out ports 1-7. VDC data from all ports are merged.  
This configuration is ideal for creating a digital snake and is capable  
of creating multiple digital splits of the stage source material for  
connection to a monitor console as well as to recording and broadcast  
devices.  
P Note: Never connect more than one cable between ports 9 and 10  
except in Manual Mode Configuration C; doing so will result in  
a data loop.  
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A-Net Receive  
(Ports 1-10)  
A-Net Transmit  
(Ports 1-10)  
Merger  
Distributor  
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10  
10  
Manual Mode Configuration C  
P Note: When using Configuration C in Manual Mode, be sure that  
both MH10/MH10f Merger Hubs are set to Configuration C to  
avoid creating a data loop.  
Configuration C Example  
This example shows a stage-to-FOH application with a monitor console,  
a 64-channel recording split, and a broadcast feed from the front-of-  
house mix outputs. Two MH10 Merger Hubs are shown; MH10f hubs can  
be substituted.  
Inputs on the stage (mic, line-level, or digital) are connected to ports 1-8  
of the MH10/MH10f on stage. Port 8 on this MH10/MH10f is connected to  
output modules that feed the monitor console and recording devices.  
(Optionally, another MH10 or MH10f could be connected to port 8 to  
create a parallel rather than serial digital split.)  
Digital audio from the stage inputs is merged and then transmitted  
via port 10 to the second MH10/MH10f at the front-of-house mixing  
position. (Port 9 is the redundant Cat-5e or fiber backup cable, shown  
with a dotted line in the diagram that follows.)  
At FOH, port 10 is connected to four output modules which feed the  
front-of-house mixing console. The engineer creates mix content and  
sends it into an input module (marked as “Returns 1-16”) at port 5 in the  
diagram. Port 8 on the front-of-house MH10/MH10f is also connected to  
an output module located in the broadcast area. This module outputs  
the same FOH mix content.  
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STAGE  
1
2
Stage Inputs 1-16  
Stage Inputs 17-32  
Stage Inputs 33-48  
Stage Inputs 49-64  
3
4
5
6
FOH Returns 1-16 Out  
7
8
9
10  
Stage Outputs 1-16  
Stage Outputs 17-32  
Stage Outputs 33-48  
Stage Outputs 49-64  
1
2
MONITOR  
CONSOLE  
FOH  
3
4
5
FOH Returns 1-16 In  
Stage Outputs 1-16  
Stage Outputs 17-32  
Stage Outputs 33-48  
Stage Outputs 49-64  
6
Stage Outputs 1-16  
Stage Outputs 17-32  
Stage Outputs 33-48  
Stage Outputs 49-64  
7
8
9
RECORDING  
10  
FOH Returns 1-16 Out  
BROADCAST  
64 inputs on stage feed a monitor console and recording devices. The  
front-of-house mix (FOH Returns) is sent to the broadcast area and to  
amps and speaker processors on stage.  
Ports 1-7 will output audio coming from the front-of-house mixer, either  
monitoring content or audio for the speaker systems. Port 8 will output  
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all audio inputs from the stage (ports 1-8) for use in a monitor console  
or in a recording or broadcast room.  
All Cat-5e network cables shown in the example diagrams can be up to  
400 feet (120 meters) long. Fiber optic cable length will depend upon  
the type of SFP device used (single- or multi-mode). Always use the  
same type and specification SFP transceivers in each MH10f.  
MH10 Configuration Errors  
Data Loops  
When using multiple MH10/MH10f Merger Hubs in a digital network,  
never connect a pair of ports (two cables) between MH10/MH10f devices  
other than ports 9-10 in Manual Mode Configuration C. Doing so will  
cause an A-Net data loop. Only Manual Mode, and its Configuration C  
specifically, can use a pair of Cat-5e or fiber cables connected between  
ports 9 and 10 in a backup/redundant cable setup.  
Changing from Manual Mode to Auto Mode  
When changing from a Manual Mode setup using two MH10/MH10f  
Merger Hubs in Configuration C to an Auto Mode setup, make sure  
that the backup/redundant cable connected between port 9 or 10  
on each MH10/MH10f is disconnected before changing the network  
setup to avoid a data loop. Only one cable (Cat-5e or fiber) should be  
connected between ports 9-10 when the MH10/MH10f is being used in  
any configuration except Manual Mode Configuration C.  
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Specifications  
A-Net I/O - MH10  
A-Net I/O - MH10f  
10x EtherCon RJ45 connectors  
8x EtherCon RJ45 connectors; 2x SFP fiber  
optic ports (modules not supplied)  
MH10f SFP Module  
100 Mbps Fast Ethernet; Class 1 laser  
device  
SFP: use duplex LC connector  
Hot-pluggable  
Fiber Optic Modes  
Multi-Mode, up to 2km  
Single-Mode, up to 50km  
Network Sample Rates 44.1/48kHz; 88.2/96kHz; 176.4/192kHz  
Network Sample Rate 1x 44.1/48kHz,  
39.7kHz to 52kHz  
79.4kHz to 104kHz  
Range  
2x 88.2/96kHz,  
4x 176.4/192kHz, 158.8kHz to 208kHz  
24-bit, uncompressed  
<420µs  
Network Bit Depth  
Network Latency  
Cable Length, Cat-5e  
Maximum 400 feet (120 meters);  
Use Unshielded Twisted Pair (UTP) cable  
Power Supply MH10  
Power Supply MH10f  
100-240VAC  
50-60Hz, 15W  
Internal switching power supply;  
IEC connector, interchangeable; no DC  
backup power  
100-240VAC  
50-60Hz, 24W  
Internal switching power supply;  
IEC connector, interchangeable  
MH10f Backup DC  
Power  
24VDC, 5%; 4-pin XLR, external supply  
Pin 1: Ground; Pin 4: 24VDC;  
Pin 2, 3: no connect  
Input Power Required: 24VDC 5%, 0.8  
amp typical, 1.3 amp max.  
DC Jack: Neutrik NC4MAH  
DC Jack Mating Connector: Neutrik NC4FX  
or NC4FXX  
Fuse  
250V, F4AL  
Dimensions  
1U; 19”w x 8”d x 1.75”h  
482.6 x 203 x 45 mm  
Weight  
6 pounds;  
2.72 kg  
All Aviom products are designed and manufactured in the USA.  
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Dimensions  
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Index  
C
Symbols  
Cable Length 27  
Cables  
100 Mbps 2, 16  
SFP Module 27  
1 Gbps 2  
4-pin XLR 11, 15  
6416Y2 card 21  
Cat-5e, Cat-6 4  
cable specification, Cat-5e 3  
Cat-5  
stranded vs. solid 3  
Cat-5e 1, 3, 27  
Unshielded Twisted Pair (UTP) 3  
Cat-5e Cable Distance 4  
Cat-6 3  
Certifications ii  
Cleaning 8  
Clock 5  
jitter and wander 4  
Clock Master 5  
computer 3, 14  
Configuration A 20  
Configuration B 20, 21  
Configuration C 23, 26  
Configuration Errors 26  
Configurations  
Manual Mode 18  
configurations A, B, C  
Manual Mode 12  
Connector  
A
A, B, C LEDs  
Manual Mode 17  
A-16II, A-16R 21  
Personal Mixer 6  
A-Net  
Pro64 Series 4  
A-Net Distributor 6  
A-Net I/O 27  
A-Net LED 9, 13  
A-Net Port 5, 9, 16  
A-Net Systems Interface 21  
A-Net Transmit 12  
About A-Net 4  
AC fuse  
changing 15  
AC Line Conditioning 7  
AC Power 15  
AN-16/o Output Module 6  
ASI 21  
ASI A-Net Systems Interface 6  
Auto/Manual Mode Selection 9  
Auto LED 12  
SFP 2  
Control Data 5  
Control Master 14  
convert Pro64 to Pro16 6  
Auto Mode 5, 12, 16, 19  
D
D-16c card  
Pro16 6  
Data Loop 26  
DB9 cable  
null modem 3  
DC Power  
Backup 15, 27  
DiGiCo 6  
B
backup cable 26  
Backup Power 11  
DC 15, 27  
bidirectional 5  
Bit Depth 27  
digital snake 21  
digital split 13, 20, 21  
Dimensions 27, 28  
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duplex 2  
Duplex LC connector 27  
dust cap  
L
Latency 4, 27  
LC Connector 2  
LC connector 27  
LED  
SFP 2  
A, B, C 17  
Network Mode 12  
E
Enter/Cancel button 12  
Errors 26  
EtherCon 1, 3, 16  
Ethernet 4  
M
Managed button 9, 14  
Managed LED 14  
Managed Mode 14  
Manual LED 12  
Manual Mode 5, 9, 12, 19, 26  
A, B, C LEDs 10, 11, 17  
Manual Mode Configuration Button  
Manual Mode Configurations 12, 18  
Maximum cable lengths 27  
Merge 1-8 13  
Merge 1-9 12  
Merge All 12, 20  
F
Fast Ethernet 27  
FCC info iii  
fiber optic 16, 27  
multi-mode 2  
single-mode 2  
Firmware Update 3, 13  
FOH 21  
Front Panel Components 9  
Fuse 27  
Fuse Holder 10, 11  
Merger 18  
MIDI 5  
Monitor Mixing System  
Pro16 6  
Mounting, Rack 7  
multi-mode fiber optic 2  
G
Gain Range Switch 13  
Gigabit SFP 2  
GPIO  
N
General Purpose I/O 5  
Network Mode 12  
Neutrik EtherCon. See EtherCon  
null modem cable  
DB9 3  
H
hot swap 2  
O
I
Output Module  
AN-16/o 6  
output module 21  
IEC connector 27  
IEC power cord 15  
IEC Power Inlet 10, 11  
input module 18, 21  
P
PC  
J
firmware update 3  
Personal Mixer  
A-16II, A-16R 6  
Jitter 4  
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Personal Mixers 21  
Port 12, 20  
Port A, B. See A-Net Port; See A-Net  
Ports  
U
Unshielded Twisted Pair 3  
UTP 27  
Update  
firmware 3, 14  
Update Tool 3  
UPS 7  
Ports  
A-Net 5  
Ports 9 and 10  
redundant/backup 26  
Power On/Off Switch 10, 11  
Power Supply 15, 27  
DC Backup 15  
Pro16 21  
UTP  
Cat-5e cable 3  
UTP cable 27  
Cat-5e, Cat-6 4  
Pro16 Series 6  
Pro64 1, 4  
Pro64 to Pro16  
convert 6  
V
VDC data 20  
Ventilation 8  
Virtual Data Cables 5  
VDC 18  
Pro64 Update Tool 3  
R
Rear Panel Components 10, 11  
redundancy 13, 23  
redundant/backup  
Ports 9 and 10 26  
RJ45 1, 3  
W
Wander 4  
Warnings iii  
Warranty vi  
Weight 27  
RoHS ii  
RS-232 5  
null modem cable 3  
RS-422 5  
Y
Y1 card  
Pro16 6  
Yamaha 21  
S
Safety Instructions iv  
Safety Warnings iii  
Sample Rate 4, 27  
minimum/maximum 4  
sample rate conversion 5  
SFP 1, 2, 16, 27  
dust cap 2  
SFP connectors 11  
simplex 2  
single-mode fiber optic 2  
Slot 5  
Specifications 27  
splits 21  
stranded vs. solid Cat-5 3  
T
transceiver 2, 26  
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