Kramer VN-1055 User manual

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KRAMER ELECTRONICS LTD.
KRAMER ELECTRONICS, Ltd.
USER MANUAL
Distribution Amplifiers Models:
VM-1010, VM-1015, VM-1021,
VM-1042, VM-1044, VN-1055, VM-54
IMPORTANT: Before proceeding, please read paragraph entitled
"Unpacking and Contents"

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KRAMER ELECTRONICS LTD.
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Table Of Contents
Section Name Page
1 INTRODUCTION 1
1.1 A Word On Distribution Amplifiers 1
1.2 Factors Affecting Quality of Results 2
2 SPECIFICATIONS 3
3 HOW DO I GET STARTED? 4
4 UNPACKING AND CONTENTS 4
4.1 Optional Accessories 4
5 VM SERIES AMPLIFIERS 6
5.1 Getting To Know Your VM-1010 Amplifier 6
5.2 Getting To Know Your VM-1015 Amplifier 7
5.3 Getting To Know Your VM-1021 Amplifier 8
5.4 Getting To Know Your VM-1042 Amplifier 10
5.5 Getting To Know Your VM-1044 Amplifier 12
5.6 Getting To Know Your VM-1055 Amplifier 13
5.7 Getting To Know Your VM-54 Amplifier 14
6 INSTALLATION 16
6.1 Rack Mounting 16
7 CONNECTING TO VIDEO DEVICES 16
8 USING THE VIDEO AMPLIFIERS 17
8.1 Powering On The Amplifier 17
8.2 Looping 17
8.3 Level Control 17
8.4 Equalization Control 18
8.5 Coupling 18
8.6 Black Level Clamping 18
8.7 Sync Tip Clamping 19
9 TAKING CARE OF YOUR VIDEO AMPLIFIER 19
10 TROUBLESHOOTING 19
10.1 Power And Indicators 19
10.2 Video Signal 20
Limited Waaranty 21
List Of Illustrations
Figure Page
1 VM-1010 Front/Rear Panel Features 6
2 VM-1015 Front/Rear Panel Features 7
3 VM-1021 Front/Rear Panel Features 8
4 VM-1042 Front Panel Features 10
5 VM-1044 Front/Rear Panel Features 12
6 VM-1055 Front/Rear Panel Features 13
7 VM-54 Front/Rear Panel Features 15
List Of Tables
Table Page
1 VM-1010 Front Panel Features 6
2 VM-1010 Rear Panel Features 7
3 VM-1015 Front Panel Features 8
4 VM-1015 Rear Panel Features 8
5 VM-1021 Front Panel Features 9
6 VM-1021 Rear Panel Features 9
7 VM-1042 Front/Rear Panel Features 11
8 VM-1044 Front/Rear Panel Features 12
9 VM-1055 Front/Rear Panel Features 13
10 VM-54 Front Panel Features 15
11 VM-54 Rear Panel Features 16
12 Signals Supported By Model 16

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 INTRODUCTION
Congratulations on your purchase of this Kramer Electronics amplifier. Since 1981 Kramer has been
dedicated to the development and manufacture of high quality video/audio equipment. The Kramer
industrial line has become an integral part of many of the best production and presentation facilities
around the world. In recent years, Kramer has redesigned and upgraded most of the industrial line,
making the best even better. Kramer’s line of professional video/audio electronics is one of the most
versatile and complete available, and is a true leader in terms of quality, workmanship,
price/performance ratio and innovation. In addition to the Kramer line of high quality amplifiers, such
as the one you have just purchased, Kramer also offers a full line of high quality industrial and
broadcast switchers, processors, interfaces, controllers and computer-related products. Kramer
welcomes your inquiries for Kramer equipment or custom-manufactured products, engineering, private
labeling and OEM manufacturing per your specifications.
This manual includes configuration, operation and information for the following products from the
Kramer VM line of distribution amplifiers. All these VM amplifiers are similar in operation and
features.
 VM-1010 - 1:10 Video Distributor
 VM-1015 - 1:5 Video Distributor
 VM-1021 - 1:20 Video Distributor
 VM-1042 - 4:2 Video Component Distributor
 VM-1044 - 4:4 Video Distributor
 VM-1055 - 1:5 Five Channel Video Component Distributor
 VM-54 - Looping Video Distributor
 A Word On Distribution Amplifiers
Distribution amplifiers are used to distribute one source to several acceptors for simultaneous
recording or monitoring of one source, with no discernible signal degradation. They vary in the
number of inputs, looping capability, programming capability, number of outputs, operating format,
bandwidth and input/output coupling. A good quality distribution amplifier amplifies the incoming
signal, pre-compensates the signal for potential losses (resulting from the use of long cables, noisy
source, etc.) and generates several identical buffered and amplified outputs. Often, a signal processor is
inserted between the source and the distribution amplifier for correction and fine-tuning of the source
signal before multiplication, so that all copies are corrected in the same way. The front panels of these
Kramer amplifiers are designed to be simple to operate.

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 Factors Affecting Quality of Results
There are many factors affecting the quality of results when signals are transmitted from a source to an
acceptor:
Connection cables - Low quality cables are susceptible to interference, they degrade signal quality due
to poor matching and cause elevated noise levels. They should therefore be of the best quality.
Sockets and connectors of the sources and acceptors - So often ignored, they should be of highest
quality, since "Zero Ohm" connection resistance is the target. Sockets and connectors also must match
the required impedance (75ohm in video). Cheap, low quality connectors tend to rust, thus causing
flaws in the signal path.
Amplifying circuitry - Must have quality performance when the desired end result is high linearity,
low distortion and low noise operation.
Distance between sources and acceptors - Plays a major role in the final result. For long distances
(over 15 meters) between sources and acceptors, special measures should be taken in order to avoid
cable losses. These include using higher quality cables or adding line amplifiers.
Interference from neighboring electrical appliances - These can have an adverse effect on signal
quality. Balanced audio lines are less prone to interference, but unbalanced audio should be installed
far from any mains power cables, electric motors, transmitters, etc. even when the cables are shielded.

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 SPECIFICATIONS
VM-1010 VM-1015 VM-1021 VM-1042 VM-1044 VM-1055 VM-54
Configuration
2X CV 1X CV 1X CV 4XCV/RGB 4XCV/RGB 5XCV/ RGB
HSVS
1X CV, 3comp
Input Type
CV CV CV CV/RGB CV/RGB CV/RGB HSVS CV/Comp
Input
Connections
BNC BNC BNC BNC BNC BNC BNC
Input Level
1Vpp/75
looping
1Vpp/75
looping
1Vpp/75
looping
1Vpp/75
looping
1Vpp/751Vpp/751Vpp/75
looping
Output Type
1X10 or 2X5 5XCV CV 3Vpp Max. 2X4 CV/RGB
2Vpp
4X4 CV/RGB 5X5CV/ RGB
HSVS
3x18
Composite/ CV
Output
Connector
BNC BNC BNC BNC BNC BNC BNC
Output Level
1Vpp/751Vpp/751Vpp/751Vpp/751Vpp/751Vpp/751Vpp/75
Output
Coupling
DC/AC AC/ DC/
Clamped
AC/ DC/
Clamped
DC DC DC DC/AC
S/N Ratio
74dB 75dB 74dB 73dB 74dB 74dB 70dB
Bandwidth
220MHz –3dB 340MHz -3dB 350 MHz -3dB 200 MHz -3dB 320 MHz -3dB 300 MHz -3dB 350MHz
Differential
Gain
0.05 %. 0.08 %. 0.1 %. 0.05 %. 0.05 %. 0.1 %. 0.03%
Differential
Phase
0.05Deg 0.12Deg 0.07Deg 0.05Deg 0.05Deg 0.1Deg 0.09Deg
K-Factor
<0.05%. <0.03%. <0.03%. <0.05%. 0.1%. 0.05%. <0.05%
Non Linearity
0.2% <0.1%. 0.1%. <0.1%. <0.1%. 0.1%. 0.2%
EQ. Control
0-2.5dB @
100% color bar,
4.43MHz
0-2.7dB @
100% color bar,
4.43MHz
0-2.9dB @
100% color bar,
4.43MHz
0-1.3dB @
100% color bar,
4.43MHz
0-0.9dB @
100% color bar,
4.43MHz
No equalization 0 to 2.3dB
DC Clamp
Not clamped 0 VDC Black
Level, or sync
bottom TIP
0 VDC Black
Level, or sync
bottom TIP
Not clamped Not clamped Not clamped Not clamped
Level Control
-1.4db-+2.5db -1.2db-+2.8db
(trimmer)
4 accessible
trimmers
-2.2db-+2.0db -1.1db-+2.5db Fixed gain=1 24 accessible
trimmers
Dimensions 19 inch (W),
7 inch (D), 1U
(H) 48.26
cm x 17.78 x
4.5cm
19 inch (W),
7 inch (D), 1U
(H) 48.26
cm x 17.78 x
4.5cm
19 inch (W),
7 inch (D), 1U
(H) 48.26
cm x 17.78 x
4.5cm
19 inch (W),
7 inch (D), 1U
(H) 48.26
cm x 17.78 x
4.5cm
19 inch (W),
7 inch (D), 1U
(H) 48.26
cm x 17.78 x
4.5cm
19 inch (W),
7 inch (D), 1U
(H) 48.26
cm x 17.78 x
4.5cm
19 inch (W),
7 inch (D), 2U
(H) 48.26
cm x 17.78 x 9
cm
Weight 2.5Kg
(5.55Lbs.)
Approx.
2.420Kg
(5.38Lbs)
Approx.
2.660Kg
(5.91Lbs)
Approx.
2.5Kg
(5.55Lbs.)
Approx.
2.540Kg
(5.64Lb)
Approx.
2.660Kg
(5.91Lbs)
Approx.
3.980Kg
(8.84Lbs)
Approx.
Power
consumption
10.3VA 4.6VA 6.7VA 3.2VA 4.6VA 5.3VA 21.39VA
Power Source 230V/115VAC
50/60Hz
230V/115VAC
50/60Hz
230V/115VAC
50/60Hz
230V/115VAC
50/60Hz
230V/115VAC
50/60Hz
230V/115VAC
50/60Hz
230V/115VAC
50/60Hz

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 HOW DO I GET STARTED?
The fastest way to get started is to take your time and do everything right the first time. Taking 15
minutes to read the manual may save you a few hours later. You don’t even have to read the whole
manual. At the beginning of each section, you’ll find an overview of the section. So if the section
doesn’t apply to you, you don’t have to spend your time reading it.

UNPACKING AND CONTENTS
The items contained in your Kramer VM Amplifier packaging are listed below. Please save the
original box and packaging materials for possible future transportation and shipment of the Amplifier.
 Amplifier (rack-mountable)
 AC power cable
 User Manual
 Kramer concise product catalog
 4 rubber feet
For additional information regarding optional cables and optional accessories contact your Kramer
dealer.
 Optional Accessories
The following Kramer accessories can enhance implementation of your amplifier.
 SP-11 - (Video/Audio Processor) can be serially connected between the video/audio source and the
VM amplifier for video and audio control/correction. The machine provides camera control and
luminance/white balance correction. The SP-11 is also capable of performing Composite to Y/C
conversion and bi-directional transcoding. The machine allows full control over the video signal:
Video gain down to full fade, log or linear Definition control, log or linear Contrast control, Color
saturation control, Black Level control, Red, Green and Blue controls and a Screen Splitter control
for “before-after” comparison. The Input switch control is "Audio-follow-Video".
 SP-3001 - (Component Video Processor) can be serially connected to the VM amplifier in order to
achieve full control of component video. The SP -3001 has 3 looping Component Video inputs and 9
outputs- three for each component; thus it serves as a Component DA as well. The SP -3001 allows
full control of Gain, Contrast, Definition and black level of the Y channel and individual Gain and
Black level controls of the R-Y and B-Y channels. A Screen Splitter control for "before-after"
comparison is also built in.

VS-2516 - (Programmable Vertical Interval Matrix Switcher) can be serially connected to the VM
amplifier for input switching and source selection. The VS -2516 serves as a 16x16 Composite Video
switcher, as an 8x8 Super Video (YC) switcher, as a 4x4 RGBS or as a 5x5 YUV switcher. It may be
connected to a VS-2216/VS-2616 (16x16 Audio Matrix Switchers) for "Audio follow Video"
applications. The VS -2516 has very low cross talk and wide frequency response, DC coupled
outputs, with RS-232 interface built-in, (software provided), LCD panel read-out, LED status
display, up to 15 setups savable in non-volatile RAM, and is microprocessor controlled with user
programmable settings. It can be easily extended up to 96x96 by using additional machines.

VP-102 (VGA to RGBS Converter) is a full bandwidth VGA to RGBS Converter especially
designed for computer, workstation and presentation applications, and for simplifying computer
graphics distribution. The machine may be installed between a PC and one of the DA's for
conversion between the DB-15 connector type signals, to a signal appropriate to the DA. This is
implemented by using the VP-102 as a converter from VGA/Super - VGA/XGA graphics output to

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Red, Green, Blue, Horizontal/Composite sync and Vertical Sync signals available on BNC
connectors. The VP-102 allows the user to select either a Composite or Horizontal sync output and
the Green output either includes Composite sync or is blanked.
 SG-11 (Sync-Green Adder/Separator) is used for adding a sync signal to the "GREEN" channel
prior to distribution. The SG-11 interfaces between the two most widely used professional
Component Video formats: RGB with Sync on Green and RGBS. The SG-11 either combines Sync
with Green or splits Green & Sync signal to separate Green and Sync on the BNC connectors.
 TP-1 (Video Line Transmitter). If one of the DA outputs is sent over a long distance (100 meter or
more), it is necessary to convert the signal to twisted pair type. The TP-1 sends a color video signal
over long distances using telephone wire or any other twisted pair wire thus extending the range of
operation of a DA. The TP-1 maintains the bandwidth of an industrial color video signal up to
several hundred meters and of broadcast quality (up to 12 MHz) signals up to 100 meters. At shorter
distances, as in a studio, bandwidth of 30 MHz is easily achieved. By using the KRAMER TP-1
together with the TP-2 (Video Line Receiver) coax wiring (in a studio for example) can be
completely eliminated. The TP-1 can also be used for simplification of security and CCTV
installations, and for teleconferencing in offices and hospitals using existing intercom or telephone
wiring.

VA-11AV - (Video/Audio Combiner) Used to distribute audio/video signals. The machine can be
inserted in front of a DA, allowing the DA to distribute a video signal and two audio signals
simultaneously. It sends a color video signal and a stereo audio signal using only one standard coax
cable in real time. The machine maintains the bandwidth of an industrial color video signal and the
output signal may be viewed and recorded as a normal video signal. By using the VA-11AV together
with the VA-12AV (Video/Audio Separator) the audio stereo signal may be recovered so audio
signals may be sent in a hidden mode, to be recovered only by the VA-12AV. The VA-11AV can be
used for simplification of security and CCTV installations, using existing video coax wiring for
video and audio transmissions.

611T/611R - (611T full bandwidth Fiber Optic Transmitter and 611R matching Fiber Optic
Receiver) Part of the KRAMER TOOLS series, and designed for studio and other demanding
applications. These machines, in combination, may be used to send one of the distributed channels to
distances of 5-25Km. The 611T and 611R use state-of-the-art fiber optic circuitry and allow the user
(via rear panel trimmers) to adjust input and output video levels and high frequency peaking to
achieve best performance. Both machines, like all KRAMER TOOLS, are fed from a 12VDC source,
making them perfectly suitable for fieldwork as well.
 VIDEO TESTER - A new, unique, patented, indispensable tool for the video professional, the
Video Tester is used to test a video path leading to/from an amplifier. By pressing only one touch
switch it can trace missing signals, distinguish between good and jittery (VCR sourced) signals, and
identify the presence of good signals. Whenever a video signal is missing, because of bad
connections, cable breaks or faulty sources, the Video Tester is all you need.

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 VM SERIES AMPLIFIERS
This section describes all the controls and connections of your amplifier. Understanding all of the
controls and connections helps you realize its full power.
 Getting To Know Your VM-1010 Amplifier
The KRAMER VM-1010 is full broadcast, state-of-the-art, Programmable Video Distribution
Amplifier designed for studio and other demanding applications. The VM-1010 has two looping video
inputs, each splitting to 5 outputs. The user may select 2x1:5 or 1:10 operation via front panel control
switches. Several VM-1010 units may be chained through the looping inputs. Output signals are (user
selectable) DC or AC coupled for maximum flexibility.
Front/rear panel features of the VM-1010 are described in Figure 1, Table 1 and Table 2.
Figure 1: VM-1010 Front/Rear Panel Features
Table 1: VM-1010 Front Panel Features
No. Feature Function
1. Power Switch Illuminated switch: Supplies power to the unit.
2. EQ trimmer (CHANNEL B) Controls cable equalization of channel B outputs.
3. Level trimmer (CHANNEL B) Controls video level of channel B outputs.
4.
MODE (2 x 1:5, 1:10)
pushbutton
Selects either 1:10 or 2 x 1:5 operation.
5. EQ trimmer (CHANNEL A) Controls cable equalization of channel A outputs.
6. Level trimmer (CHANNEL A) Controls video level of channel A outputs.

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Table 2: VM-1010 Rear Panel Features
No. Feature Function
1. OUT 1A -5A BNC connectors 5 amplified and buffered video outputs.
2. INPUT A BNC connector Video input.
3. 75ohm pushbutton Selects "75ohm" or "HI-z" impedance (for looping select
"Hi-z").
4. DC pushbutton Selects DC coupling when pushed.
5. LOOP BNC connector Provides video looping capability to increase number of
outputs.
6. INPUT BBNC connector Video input.
7. 75ohm pushbutton Selects "75ohm" or "HI-z" impedance (for looping select
Hi-z).
8. DC pushbutton Selects DC coupling when pushed.
9. LOOP BNC connector Provides video looping capability to increase number of
outputs.
10. OUT 1B –5B BNC connectors 5 amplified and buffered video outputs.
11. Power Connector A 3-prong AC connector allows power to be supplied to the
unit. Directly underneath this connector, a fuse holder houses
the appropriate fuse.
 Getting To Know Your VM-1015 Amplifier
The KRAMER VM-1015 is a full broadcast, state-of-the-art 1:5 Video Distribution Amplifier
designed for studio and other demanding applications. The VM-1015 splits a single input source into
five identical outputs with no discernible signal degradation. Output signals can either be AC or DC
coupled, black level or sync tip (signal bottom) clamped, thus allowing the machine to function in all
video environments. The machine may be used to distribute analog or SDI (Serial Digital) video
signals, composite or single component. Video bandwidth of well over 340MHz and superb
specifications make the VM-1015 the ultimate distributor for all video applications.
Front/rear panel features of the VM-1015 are described in Figure 2, Table 3 and Table 4.
Figure 2: VM-1015 Front/Rear Panel Features

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Table 3: VM-1015 Front Panel Features
No. Feature Function
1. Power Switch Illuminated switch: Supplies power to the unit.
2. EQ trimmer (ADJUST) Controls cable equalization of the video outputs.
3.
LEVEL trimmer (ADJUST) Controls video level of the video outputs.
4. DC (COUPLING) switch Selects DC coupling when pushed.
5. AC (COUPLING) switch Selects AC coupling when pushed.
6. BLACK (CLAMP) switch Clamps video signal to the black level when pressed (best
used for Composite or Component video).
7.
TIP (CLAMP) switch Clamps video signal to the sync tip (signal bottom) level
when pressed (best used for RGB signals).
Table 4: VM-1015 Rear Panel Features
No. Feature Function
1. INPUT BNC connector Video input
2. TERM pushbutton Selects “75ohm“ or “HI-z” impedance when pressed (for
looping select "Hi-z").
3. LOOP BNC connector Provides video looping capability to increase number of outputs.
4.
OUT 1-5 BNC connectors 5 amplified, buffered and clamped video outputs.
5. Power Connector A 3-prong AC connector allows power to be supplied to the
unit. Directly underneath this connector, a fuse holder houses
the appropriate fuse.
 Getting To Know Your VM-1021 Amplifier
The KRAMER VM-1021 is a full broadcast, state-of-the-art, 1:20 Video Distribution Amplifier
designed for studio and other demanding applications. The VM-1021 splits a single input source into
twenty identical outputs with no discernible signal degradation. Output signals can either be AC or DC
coupled, black level or sync tip clamped, thus allowing the machine to function in all video
environments. The outputs are divided into 4 sets of five each, where each set may be individually
trimmed (level and EQ) for maximal flexibility. The machine may be used to distribute analog or SDI
(Serial Digital) video signals, composite or single component. Video bandwidth of well over 350 MHz
and superb specifications make the VM-1021 the ultimate distributor for all video applications.
Front/rear panel features of the VM-1021 are described in Figure 3, Table 5 and Table 6.
Figure 3: VM-1021 Front/Rear Panel Features

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Table 5: VM-1021 Front Panel Features
No. Feature Function
1. Power Switch Illuminated switch: Supplies power to the unit.
2. EQ trimmer (SET 4 ADJUST) Controls cable equalization of SET 4 video outputs.
3. LEVEL trimmer (SET 4 ADJUST) Controls level of SET 4 video outputs.
4. EQ trimmer (SET 3 ADJUST) Controls cable equalization of SET 3 video outputs.
5. LEVEL trimmer (SET 3 ADJUST) Controls level of SET 3 video outputs.
6. EQ trimmer (SET 2 ADJUST) Controls cable equalization of the SET 2 video outputs.
7.
LEVEL trimmer (SET 2 ADJUST) Controls level of SET 2 video outputs.
8. EQ trimmer (SET 1 ADJUST) Controls cable equalization of the SET 1 video outputs.
9. LEVEL trimmer (SET 1 ADJUST) Controls level of the SET 1 video outputs.
10. DC (COUPLING) switch Selects DC coupling when pushed.
11. AC (COUPLING) switch Selects AC coupling when pushed.
12. BLACK (CLAMP) switch Clamps video signal to the black level when pressed (best
used for Composite or Component video).
13. TIP (CLAMP) switch Clamps video signal to the sync tip level when pressed
(best used for RGB signals).
Table 6: VM-1021 Rear Panel Features
No. Feature Function
1. INPUT BNC connector Video input
2. TERM pushbutton Selects “75ohm“ or “HI-z” impedance when pressed (for
looping select "Hi-z").
3. LOOP BNC connector Provides video looping capability to increase number of
outputs.
4. OUT 1-5 BNC connectors (SET 1) SET 1 of 5 amplified buffered and clamped video outputs.
5. OUT 1-5 BNC connectors (SET 2) SET 2 of 5 amplified buffered and clamped video outputs.
6.
OUT 1-5 BNC connectors
(SET 3) SET 3 of 5 amplified buffered and clamped video outputs.
7. OUT 1-5 BNC connectors (SET 4) SET 4 of 5 amplified buffered and clamped video outputs.
8. Power Connector A 3-prong AC connector allows power to be supplied to
the unit. Directly underneath this connector, a fuse holder
houses the appropriate fuse.

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 Getting To Know Your VM-1042 Amplifier
The KRAMER VM-1042 is a full broadcast, looping Video Component Distributor designed for studio
and other demanding applications. VM-1042 splits each input of a four-component source into two
identical outputs with no discernible signal degradation. Input and output DC coupling and state-of-
the-art video amplifying circuitry make the KRAMER VM-1042 the first choice Video Component
Distributor. Signal bandwidth of 200MHz allows the VM-1042 to be used for the most demanding
applications. The VM-1042 may be used as a 4 times looping 1:2 video DA of exceptional quality, for
any video source (Composite, YC, YUV or RGB).
Front/rear panel features of the VM-1042 are described in Figure 4 and Table 7.
Figure 4: VM-1042 Front/Rear Panel Features

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Table 7: VM-1042 Front/Rear Panel Features
No. Feature Function
1. Power Switch (front panel) Illuminated switch: Supplies power to the unit.
2. IN BNC connector (CHANNEL A) Channel A video input.
3. TERM pushbutton (CHANNEL A) Selects “75ohm“or “HI-z” impedance for Channel A
when pressed (for looping select "Hi-z").
4. LOOP BNC connector (CHANNEL A) Provides video looping capability to increase number
of outputs.
5. OUT 1,2 BNC connectors
(CHANNEL A)
Channel A amplified and buffered video outputs.
6. IN BNC connector (CHANNEL B) Channel B video input.
7. TERM pushbutton (CHANNEL B) Selects “75ohm“or “HI-z” impedance for Channel B
when pressed (for looping select "Hi-z").
8. LOOP BNC connector (CHANNEL B) Provides video looping capability to increase number
of outputs.
9. OUT 1, 2 BNC connectors
(CHANNEL B)
Channel B amplified and buffered video outputs.
10. IN BNC connector (CHANNEL C) Channel C video input.
11. TERM pushbutton (CHANNEL C) Selects “75ohm“or “HI-z” impedance for Channel C
when pressed (for looping select "Hi-z").
12. LOOP BNC connector (CHANNEL C) Provides video looping capability to increase number
of outputs.
13. OUT 1, 2 BNC connectors
(CHANNEL C)
Channel C amplified and buffered video outputs.
14. IN BNC connector (CHANNEL D) Channel D video input.
15. TERM pushbutton (CHANNEL D) Selects “75ohm“or “HI-z” impedance for Channel D
when pressed (for looping select "Hi-z").
16. LOOP BNC connector (CHANNEL D) Provides video looping capability to increase number
of outputs.
17. OUT 1, 2 BNC connectors
(CHANNEL D)
Channel D amplified and buffered video outputs.
18. Power Connector A 3-prong AC connector allows power to be supplied
to the unit. Directly underneath this connector, a fuse
holder houses the appropriate fuse.

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 Getting To Know Your VM-1044 Amplifier
The KRAMER VM-1044 is a full broadcast, Video Component Distributor designed for studio and
other demanding applications. The VM-1044 splits a four-component input source into four identical
outputs, with no discernible signal degradation. Input and output DC coupling and state-of-the-art
video amplifying circuitry make the KRAMER VM-1044 the first choice Video Component
Distributor. Signal bandwidth of over 320MHz allows the VM-1044 to be used with graphics
workstations. The VM-1044 may serve as a 4 times 1:4 Video DA of exceptional quality, for any
video source (Composite, YC, YUV, RGB and SDI).
Front/rear panel features of the VM-1044 are described in Figure 5 and Table 8.
Figure 5: VM-1044 Front/Rear Panel Features
Table 8: VM-1044 Front/Rear Panel Features
No. Feature Function
1. Power Switch (front panel) Illuminated switch: Supplies power to the unit.
2. IN BNC connector (CHANNEL A) Channel A video input.
3. OUT 1- 4 BNC connectors
(CHANNEL A)
Channel A amplified and buffered video outputs.
4. IN BNC connector (CHANNEL B) Channel B video input.
5. OUT 1- 4 BNC connectors
(CHANNEL B)
Channel B amplified and buffered video outputs.
6. IN BNC connector (CHANNEL C) Channel C video input.
7. OUT 1- 4 BNC connectors
(CHANNEL C)
Channel C amplified and buffered video outputs.
8. IN BNC connector (CHANNEL D) Channel D video input.
9. OUT 1- 4 BNC connectors
(CHANNEL D)
Channel D amplified and buffered video outputs.
10. Power Connector A 3-prong AC connector allows power to be supplied to
the unit. Directly underneath this connector, a fuse holder
houses the appropriate fuse.

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 Getting To Know Your VM-1055 Amplifier
The KRAMER VM-1055 is a full broadcast, Video Component/RGBHV Distributor designed for
studio, graphics workstation, presentation and other demanding applications. The VM-1055 splits a
five-component input source into five identical outputs, with no discernible signal degradation. DC
coupled inputs and outputs and state-of-the-art video amplifying circuitry make the KRAMER VM-
1055 the first choice Video Component Distributor. Signal bandwidth of over 300 MHz and the option
to adjust the termination of two "sync" channels (75 Ohms analog or TTL level) allow the VM-1055 to
be used with graphics workstations and for presentation purposes. The VM-1055 may function as a 5
X 1:5 Video DA, for any video source when the termination switch is at "75ohm" (Composite, YC,
YUV, RGB and SDI);or as a 3 analog channels + 2 TTL channels distributor.
Front/rear panel features of the VM-1055 are described in Figure 6 and Table 9.
Figure 6: VM-1055 Front/Rear Panel Features
Table 9: VM-1055 Front/Rear Panel Features
No. Feature Function
1. Power switch Illuminated switch: Supplies power to the unit.
2. 75ohm switch Selects “75ohm“or “HI-z” impedance for Hs Channel.
When at the "75ohm" position, the signal applied to the
connector should be analog video or sync signal. When
in the “HI-z” position a TTL level sync signal may be
used.
3. IN Hs BNC connector Hs Channel video input (horizontal sync).
4. OUT Hs 1- 5 BNC connectors Hs Channel amplified and buffered video outputs.

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Table 9: VM-1055 Front/Rear Panel Features (continued)
No. Feature Function
5. 75ohm switch Selects “75ohm“or “HI-z” impedance for Vs Channel.
When at the "75ohm" position, the signal applied to the
connector should be analog video or sync signal. When
in the “HI-z” position a TTL level sync signal may be
used.
6. IN Vs BNC connector Vs Channel video input(vertical sync).
7. OUT Vs 1- 5 BNC connectors Vs Channel amplified and buffered video outputs that
are identical to each other and to the input.
8. IN R BNC connector R Channel video input.
9. OUT R 1-5 impedance for Vs
Channel.
R Channel amplified and buffered video outputs that are
identical to each other and to the input.
10. IN G BNC connector G Channel video input.
11. OUT G 1-5 BNC connectors G Channel amplified and buffered video outputs that are
identical to each other and to the input.
12. IN B BNC connector B Channel video input.
13. OUT B 1-5 BNC connectors B Channel amplified and buffered video outputs that are
identical to each other and to the input.
14. Power Connector A 3-prong AC connector allows power to be supplied to
the unit. Directly underneath this connector, a fuse
holder houses the appropriate fuse.
 Getting To Know Your VM-54 Amplifier
The KRAMER VM-54 is a high quality, state-of-the-art, Video/Component Distribution Amplifier
designed for studio and other demanding applications. The VM-54 has three looping input channels
each with 18 outputs. With this configuration a 1:18 RGB distributor can be formed. Each channel is
subdivided into 4 groups of 5 or 3 outputs, which may be tuned separately for gain and cable EQ. The
three input channels may be looped-through together to form a 1:54 DA, or other configurations (e.g.
1:18 Composite or 1:18 YC - using two channels). To form a 1:54 distributor, the channel 1 LOOP
connector should be connected to the input connector of channel 2. The channel 2 LOOP connector
should be connected to the input connector of channel 3. The termination switches of channels 1 and 2
should be set at "Hi-z" and the channel 3 termination switch should be set to "75ohm". Output signals
may be AC or DC coupled via front panel controls. Signal bandwidth exceeding 350 MHz makes the
VM-54 the first choice for a large video/component distribution center.
Front/rear panel features of the VM-54 are described Figure 7, Table 10 and Table 11.

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Figure 7: VM-54 Front/Rear Panel Features
Table 10: VM-54 Front Panel Features
No. Feature Function
1. Power Switch Illuminated switch: Supplies power to the unit.
2. EQ trimmers (OUTPUTS 16-18,
Channels 1-3)
Controls cable equalization of video outputs 16-18 in
Channels 1-3.
3. GAIN trimmers (OUTPUTS 16-18,
Channels 1-3)
Controls video levels of outputs 16-18 in Channels 1-3.
4. EQ trimmers (OUTPUTS 11-15,
Channels 1-3)
Controls cable equalization of video outputs 11-15 in
Channels 1-3.
GAIN trimmers (OUTPUTS 11-15,
Channels 1-3)
Controls video levels of outputs 11-15 in Channels 1-3.
5. EQ trimmers (OUTPUTS 6-10,
Channels 1-3)
Controls cable equalization of video outputs 6-10 in
Channels 1-3.
6.
GAIN trimmers (OUTPUTS 6-10,
Channels 1-3)
Controls video levels of outputs 6-10 in Channels 1-3.
7. EQ trimmers (OUTPUTS 1-5,
Channels 1-3)
Controls cable equalization of video outputs 1-5 in
Channels 1-3.
8. GAIN trimmers (OUTPUTS 1-5,
Channels 1-3)
Controls video levels of outputs 1-5 in Channels 1-3.
9. AC/DC switches (Channels 1-3) Selects AC/DC coupling for Channels 1-3 (DC coupling
when pressed).
10. Hi-Z/75ohm switches(Channels 1-3) Selects “Hi-Z/75ohm” impedance for Channels 1-3 (75
ohm termination is applied when pressed).

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Table 11: VM-54 Rear Panel Features
No. Feature Function
1. INPUT BNC connectors (channels 1-3) Video input (channels 1-3).
2. LOOP BNC connectors (channels 1-3) Provides video looping capability to increase
number of outputs (channels 1-3).
3. OUTPUTS BNC connectors 1-18
(channels 1-3)
Video outputs that are identical to each other and to
the input.
4. Power Connector A 3-prong AC connector allows power to be supplied
to the unit. Directly underneath this connector, a fuse
holder houses the appropriate fuse.

INSTALLATION
 Rack Mounting
Each of the amplifiers included in this manual may be rack mounted in a standard 19” (1U) EIA rack
assembly, (except the VM-54 which is installed in a 2U configuration) and includes rack “ears” at the
ends of the front panel. These devices do not require any specific spacing above or below the unit for
ventilation. To mount any of the amplifiers, simply place the unit rack ears against the rack rails of
your rack, and fasten with standard screws through each of the four corner holes in the rack ears. It is
recommended to use plastic washers to protect the panel from scratching.
 CONNECTING TO VIDEO DEVICES
Video sources and output devices (such as monitors, projectors or recorders) may be connected to the
amplifiers through the BNC type connectors located on the back of the units. Unused inputs are
terminated to 75ohm, and active inputs should be terminated at the connecting source. Please keep in
mind that the output signal format will match that of the input signal format. (Example: If input is
composite, then output is composite.) All signal connections that use more than one cable
interconnecting between devices should be of equal length. (Example: R,G,B cables between a camera
and the amplifier should be equal in length. The signals supported by the various models are described
in Table 12.
Table 1

: Signals Supported By Model
No. Model Supported signal
1. VM-1010 Composite/component/YC/analog sync video
2. VM-1015 Composite/component/ analog sync video
3. VM-1021 Composite/component/ analog sync video
4. VM-1042 Composite/RGBs/component
5. VM-1044 Composite/RGBs/component
6. VM-1055 Composite/RGBHsVs/ analog or TTL sync component
7. VM-54 Composite/component RGBs video

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 USING THE VIDEO AMPLIFIERS
 Powering On The Amplifier
NOTES
1. Amplifier should only be powered on, after all
connections are completed, and all source devices
have been powered on. Do not attempt to connect
or disconnect any video, audio or control signals
to the amplifier while it is powered on!
2. The socket-outlet should be near the equipment
and should be easily accessible. To fully
disconnect equipment, remove power cord from its
socket.
1) Press the toggle switch on the far-left front panel to the up position. In the up position, the toggle
switch glows red, and the active input button illuminates, as well.
2) Operate the acceptors.
 Looping
The looping function enables the operator to extend the number of outputs per input. The following
example describes looping performed by using 3 amplifiers with one input and 5 outputs each: A video
signal reaches input of amplifier No. 1. From looping connector of amplifier No. 1 a cable is connected
to input socket of amplifier No. 2. The loop output of amplifier No. 2 is connected to the input socket
of amplifier No. 3. By this way the input signal is divided into 15 separate output signals. The operator
must always switch to "Hi-z" the termination switch of all the amplifiers but the last. The last
amplifier’ s termination switch should always be at "75ohm" to maintain well-matched video line (of
75ohm impedance) from first to last amplifier. Note that if looping function is not used, the
termination switch should be set to "75 ohm".
 Level Control
(VM-1010, VM-1015, VN-1021, VM-54 only)
Level Control function enables the operator to control video signal level or compensate for distortions
such as those caused by cables that are too long. Using a non-standard, or an uncalibrated video source
also affects the incoming signal. Picture darkness is usually caused by low video signal and on the
other hand, excessive video level "burns" the picture. The sync signal (should be around -0.3v) may be
used to check conformity of the whole video signal: If sync level is too low or too high, the incoming
video signal is not within the standard level. To correct the incoming video signal, an oscilloscope
should be connected to amplifier’ s output and the LEVEL trimmer adjusted until satisfactory sync
level and hence proper picture are achieved.
WARNING
!
1. Be aware that the amplifier was pre-calibrated for
transparent operation at the factory and re-tuning
it will upset signal transparency.
2. Do not attempt to adjust the LEVEL trimmers
without using accompanying standard calibrated
oscilloscope or waveform monitor!

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 Equalization Control
(VM-1010, VM-1015, VN-1021, VM-54 only)
Equalization Control function enables the operator to compensate for degradation of the video signal
due to too long or non-standard cables. Popular cables such as the RG-59, RG-11 or the RG-179 signal
cause degradation/attenuation of the following values:
CABLE TYPE LENGTH FREQUENCY ATTENUATION
RG-59 100 meter
100 meter
10MHz
100MHz
3.6dB
11dB
RG-11 100 meter
100 meter
10MHz
100MHz
2.2dB
7.5dB
RG-179 100 meter
100 meter
10MHz
100MHz
8dB
30dB
Degradation and loss of video signal are mainly caused due to stray capacitance which occur in long
cables. As longer cables or higher frequency are used, the problem becomes worse, resulting in fine
detail loss as well as color degradation. When RGB signals are involved (200-300MHz), degradation is
even greater, leading to a total loss of sharpness at high resolution. It is necessary to compensate for
the problem by using the amplifier’ s EQ. Control trimmer. Equalization is performed as follows: A
Color Bar Generator is connected to amplifier’ s input and a Waveform Monitor (or an Oscilloscope
with 75 ohm termination) is connected to the long cable output. A known color bar signal is applied to
the amplifier’ s input and compared to the signal monitored at the far side. The operator adjusts the EQ.
trimmer until the measured output chrominance signal matches that of the input signal.
WARNING!
1. The amplifier was calibrated at the factory for
transparent operation at 1 meter. Any re-tuning will
upset amplifier’s transparency.
2. Do not attempt to adjust the Equalization trimmers
without using accompanying standard calibrated
oscilloscope or waveform monitor!
 Coupling
The Coupling function enables the operator to determine whether the incoming video signal is DC or
AC coupled. When DC coupling is selected and proper standard video signal is applied to the
amplifier’ s input, the output signal is equal to the input signal. When AC coupling is selected, DC
components of the incoming signal are removed. DC coupling is always preferable since AC coupling
might cause some linearity distortions in low and high frequencies (due to non-ideal behavior of
capacitors). A problem may arise when the incoming signal is riding on a DC offset especially when
the acceptors are highly effected by deviation of DC offsets (A/D converters for example), which in
turn results in a distorted picture.
 Black Level Clamping
(VM-1015, VN-1021 only)
In the Black Level Clamping process, the incoming black level signal is "clamped" to "zero".
Whenever this process is activated (by pressing the "BLACK" pushbutton), the amplifier’ s internal
system automatically switches to AC coupling, thus removing the original DC components of the
incoming signal. The black level is clamped to "zero", thus converting the input signal to a standard
video signal. Whenever the picture is distorted, too dark or too bright the DC offset is probably