KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VM-5ARII
Video Audio Distribution
Amplifier
VM-20ARII
1:20 Programmable Video
Audio Distributor
P/N: 2900-300148 Rev 1
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Contents
Figures
VM-5ARII, VM-20ARII - Contents
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1
Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast range of
problems that confront the video, audio, presentation, and broadcasting
professional on a daily basis. In recent years, we have redesigned and upgraded
most of our line, making the best even better!
Our 1,000-plus different models now appear in 11 groups that are clearly defined
by function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix
Switchers; GROUP 3: Control Systems; GROUP 4: Format/Standards Converters;
GROUP 5: Range Extenders and Repeaters; GROUP 6: Specialty AV Products;
GROUP 7: Scan Converters and Scalers; GROUP 8: Cables and Connectors;
GROUP 9: Room Connectivity; GROUP 10: Accessories and Rack Adapters and
GROUP 11: Sierra Products.
Congratulations on purchasing your Kramer VM-5ARII and/or VM-20ARII
distributors, which are ideal for the following typical applications:
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Any professional AV system requiring a compact, high-quality DA
Retail stores and other point-of-sale display systems
Security and CCTV applications
Studio RGB/YUV distribution
VM-5ARII, VM-20ARII - Introduction
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2
Getting Started
We recommend that you:
•
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
•
Review the contents of this user manual
Use Kramer high performance high resolution cables
Use only the power cord that is supplied with this machine
user manuals, application programs, and to check if firmware
upgrades are available (where appropriate).
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2.1
Achieving the Best Performance
To achieve the best performance:
•
Use only good quality connection cables to avoid interference, deterioration
in signal quality due to poor matching, and elevated noise levels (often
associated with low quality cables)
•
•
Avoid interference from neighboring electrical appliances that may adversely
influence signal quality
Position your Kramer product away from moisture, excessive sunlight and
dust
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3
Overview
This section gives an overview of the:
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•
3.1
The VM-5ARII Video Audio Distribution Amplifier
The Kramer VM-5ARII is a high-performance distribution amplifier for composite
video and unbalanced stereo audio signals. It takes one input, provides correct
buffering and isolation and distributes the signal to five identical outputs.
More specifically, the VM-5ARII features:
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High bandwidth 360MHz (-3dB)
1 composite video input and 5 outputs on BNC connectors
1 unbalanced stereo input and 5 outputs on RCA connectors
Looping input
Selectable input signal termination
Video level and equalization, and audio level controls
Video AC/DC coupling detection
Standard 19” 1U rack mount size
3.2
The VM-20ARII 1:20 Programmable Video Audio
Distributor
The VM-20ARII is a multi-format, high-performance distribution amplifier that can
be configured for composite video and unbalanced stereo audio signals. It can be
configured as a 1:10 distribution amplifier for s-Video (Y/C) signals or a 1:5
distribution amplifier for RGBS signals, both with unbalanced stereo audio.
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More specifically, the VM-20ARII features:
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•
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High bandwidth of 430MHz (-3dB)
1 video input and 20 outputs on BNC connectors
1 unbalanced stereo input and 20 outputs on RCA connectors
Looped input capability
Grouped audio level control
Selectable input signal termination
Audio level and video level and equalization controls
Video AC/DC coupling selection
Standard 19” 2U rack mount size
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VM-5ARII, VM-20ARII - Overview
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Figure 1: VM-5ARII Video Audio Distribution Amplifier – Front and Rear Panels
Feature
Function
1
Illuminated Power Switch
VIDEO IN BNC Connector
75Ω/Hi-Z Pushbutton
Illuminated switch for turning the unit ON or OFF
Connects to the video source
2
3
Press in for input 75Ω termination, release for no termination
Press in for DC coupling, release for AC coupling
Connects to a display
4
DC/AC Pushbutton
5
VIDEO LOOP BNC Connector
VIDEO GAIN Control
6
Adjusts the video gain level
7
VIDEO EQ. Control
Adjusts the cable compensation equalization level
Connects to the video acceptor (from 1 to 5)
Connects to the L and R channels of the audio source
Connects to an audio acceptor
8
VIDEO OUT BNC Connectors
AUDIO IN RCA Connectors (L and R)
AUDIO LOOP RCA Connectors (L and R)
AUDIO GAIN R
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10
11
12
13
14
Controls the volume on the right audio channel
Controls the volume on the left audio channel
Connects to the audio acceptors (from 1 to 5)
AC connector for supplying power to the unit
AUDIO GAIN L
AUDIO OUT RCA RCA Connectors (L and R)
Power Connector with Fuse
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VM-5ARII, VM-20ARII - Defining the VM-5ARII and VM-20ARII
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Figure 2: VM-20ARII 1:20 Programmable Video Audio Distributor – Front Panel
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Feature
Function
1
Illuminated Power Switch
STEREO/BAL pushbuttons
OUT 1-20 (L, R) audio GAIN trimmers
OUT 1-20 EQ. and GAIN trimmers
Illuminated switch for turning the unit ON or OFF
Select stereo or balanced mode of operation (pushed=balanced)
Controls audio level of outputs 1 to 20
2
3
4
5
Control video level and cable equalization of outputs 1 to 20
1:20, 2x1:10, 4x1:5, 1:10+2x1:5 AUDIO
Programming switches for audio mode of operation as follows:
Operating Mode Switches
1:20 – Splits input “1” to all 20 outputs
2x1:10 – Splits input "1" to outputs "1-10" and input "3" to outputs "11-20"
4x1:5 – Splits four inputs to four consecutive sets of five outputs each
1:10+2x1:5 – Splits input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20"
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1:20, 2x1:10, 4x1:5, 1:10+2x1:5 VIDEO
Programming switches for video mode of operation as follows:
Operating Mode Switches
1:20 – Splits input “1” to all 20 outputs
2x1:10 – Splits input "1" to outputs "1-10" and input "3" to outputs "11-20"
4x1:5 – Splits four inputs to four consecutive sets of five outputs each
1:10+2x1:5 – Splits input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20"
VM-5ARII, VM-20ARII - Defining the VM-5ARII and VM-20ARII
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Figure 3: VM-20ARII 1:20 Programmable Video Audio Distributor – Rear Panel
#
Feature
Function
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VIDEO INPUTS (1-4) and LOOP (1-4) BNC Connectors
AUDIO IN (L and R) (1-4) RCA Connectors
AUDIO OUT (L and R) (1-20) RCA Connectors
VIDEO OUTPUTS (1-20) BNC Connectors
Power Connector with Fuse
Connect to the video sources and input loops
Connect to the L and R channels of the audio source
Connect to the audio acceptors (from 1 to 20)
Connect to the video acceptors (from 1 to 20)
AC connector for supplying power to the unit
8
9
10
11
8
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Figure 4: VM-20ARII Underside Switches
Feature Function
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12 TERM/75Ω Switches (IN1-IN4) Select 75Ω for termination (up) or HI-Z for looping
(down)
13 AC/DC Switches (IN1-IN4)
Select DC (up) or AC (down) coupling
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6
Connecting the Distribution Amplifiers
This section describes how to connect the:
•
•
Always switch off the power to each device before connecting it to your
VM-5ARII/VM-20ARII. After connecting your VM-5ARII/VM-20ARII,
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connect its power and then switch on the power to each device.
6.1
Connecting the VM-5ARII Video Audio Distribution
Amplifier
1. Connect the input video source (for example, a composite video player) to
the VIDEO INPUT BNC connector.
2. Connect the input audio source (for example, the audio from a composite
video player) to the AUDIO IN RCA connectors noting the right and left
channels.
3. Connect the VIDEO OUT 1 to 5 BNC connectors to up to 5 acceptors (for
example, composite video recorders).
You are not required to connect two acceptors.
4. Connect the AUDIO OUT 1 to 5 RCA connectors to up to 5 acceptors (for
example, the audio input on the composite video recorders).
You are not required to connect two acceptors.
5. If needed, connect the VIDEO LOOP BNC connector to an acceptor (for
example, a composite video display or another VM-5ARII) and set the
termination pushbutton to 75Ω.
6. Connect the power cord to the unit (not shown in the illustration) and then to
the mains electricity. Switch on the power.
Use the power cord supplied with the unit.
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7. If needed, adjust the VIDEO GAIN or EQ controls or the AUDIO GAIN on the
front panel.
Figure 5: Connecting the VM-5ARII
6.2 Connecting the VM-20ARII Video Audio Distributor
1. Connect up to 4 input video sources (for example, composite video players)
to the VIDEO INPUTS 1 to 4 BNC connectors.
2. Connect up to 4 input audio sources (for example, the audio from the video
players) to the AUDIO INPUTS RCA connectors 1 to 4 noting the right and
left channels.
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3. Connect the VIDEO OUT 1 to 20 BNC connectors to up to 20 acceptors (for
example, composite video recorders).
You are not required to connect all the acceptors.
4. Connect the AUDIO OUT 1 and 20 RCA connectors to up to 20 acceptors
(for example, the audio input on the video recorders).
You are not required to connect all the acceptors.
5. If needed, connect the VIDEO LOOP BNC connector to an acceptor (for
example, a composite video display or another VM-20ARII) and set the
termination pushbutton to 75Ω.
6. Connect the power cord to the unit (not shown in the illustration) and then to
the mains electricity. Switch on the power.
Use the power cord supplied with the unit.
7. If needed, adjust the VIDEO GAIN or EQ controls or the AUDIO GAIN on the
front panel.
8. Set the mode of operation by pressing one of the operating mode control
switches (one set for audio and one set for video) as follows:
ƒ
ƒ
Press the 1:20 switch to split input “1” to all 20 outputs
Press the 2x1:10 switch to split input "1" to outputs "1-10" and input "3"
to outputs "11-20"
ƒ
ƒ
Press the 4x1:5 switch to split four inputs to four consecutive sets of
five outputs each
Press the 1:10+2x1:5 switch to split input "1" to outputs "1-10", input
"3" to outputs "11-15" and input "4" to outputs "16-20"
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13
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7
Technical Specifications
VM-5ARII
INPUT:
1 video, composite or single component, looping,
1Vpp/75Ω on BNC connectors with termination switch;
1 audio stereo looping, +4dBu/50kΩ on RCA connectors
OUTPUT:
5 video, composite or single component, 1 Vpp/75Ω on
BNC connectors; 5 audio stereo, +4dBu/150Ω, on RCA
connectors
MAX. OUTPUT:
Video: 2.2Vpp; Audio: 27Vpp
VIDEO BANDWIDTH (-3dB):
AUDIO BANDWIDTH (-3dB):
DIFF. GAIN:
360MHz
60kHz
0.03%
DIFF. PHASE:
0.06Deg
0.05%
K-FACTOR:
VIDEO S/N RATIO:
AUDIO S/N RATIO:
AUDIO THD:
76dB
85dB
0.021% (1V, 1kHz.)
CONTROL:
Video gain: -1 to +1.8dB; audio gain: -40 to +6dB; EQ.: 0
to +2.5dB, audio: 0.2 to +6dB.
COUPLING:
DC/AC selectable (video), AC (audio.)
0° to +55°C (32° to 131°F)
OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
HUMIDITY:
-45° to +72°C (-49° to 162°F)
10% to 90%, RHL non-condensing
230V AC, 50/60Hz, (115V U.S.A.) 21VA.
19” x 7” x 1U W, D, H, rack mountable.
1.94kg (4.3lbs) approx.
POWER SOURCE:
DIMENSIONS:
WEIGHT:
ACCESORIES:
Power cord.
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VM-20ARII
INPUT:
4 video looping, 1Vpp/75Ω on BNC connectors with termination
switches; 4 audio stereo (or balanced mono) +4dBu/50kΩ, on
RCA connectors
OUTPUT:
Video: 20 (1:20, 2x1:10, 4x1:5, 1:10, 2x1:5) 1Vpp/75Ω on BNC
connectors; Audio: 20 (1:20, 2x1:10, 4x1:5, 1:10, 2x1:5) stereo or
balanced mono, +4dBu/50Ω, on RCA connectors
VIDEO BANDWIDTH (-3dB):
AUDIO BANDWIDTH (-3dB):
DIFF. GAIN:
430MHz
110kHz
0.06%
DIFF. PHASE:
0.08Deg
VIDEO S/N RATIO:
AUDIO S/N RATIO:
VIDEO CONTROL:
AUDIO CONTROL:
VIDEO COUPLING:
AUDIO COUPLING:
AUDIO THD+NOISE:
2nd HARMONIC:
76dB
80dB
-1.2/+1.7dB level, 0/+2.4dB EQ
+0.3/+6.2dB
DC/AC user selectable
AC (input), DC (output)
0.02%
0.002%
OPERATING TEMPERATURE:
STORAGE TEMPERATURE:
HUMIDITY:
0° to +55°C (32° to 131°F)
-45° to +72°C (-49° to 162°F)
10% to 90%, RHL non-condensing
Universal switching power supply: 100-240 VAC, 50/60Hz 18.5VA
19” x 7” x 2U W, D, H, rack mountable
3.6kg (8lbs) approx
POWER SOURCE:
DIMENSIONS:
WEIGHT:
ACCESORIES:
Power cord
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For the latest information on our products and a list of Kramer distributors,
visit our Web site where updates to this user manual may be found.
We welcome your questions, comments, and feedback.
Web site: www.kramerelectronics.com
SAFETY WARNING
Disconnect the unit from the power
supply before opening and servicing
!
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