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KRAMER:  SIMPLE CREATIVE TECHNOLOGY

 

Using the VM-25 Video Distribution Amplifier 

 

Table 1: Front Panel VM-25 Video Distribution Amplifier Features 

Feature 

Function 

POWER

 Switch 

Illuminated switch supplying power to the unit 

EQ. 

Trimmer

 

Adjusts

1

 the video EQ. (equalization) compensation of outputs 21 to 25 

LEVEL 

Trimmer

 

Adjusts

1

 the video signal level of outputs 21 to 25 

EQ. 

Trimmer

 

Adjusts

1

 the video EQ. (equalization) compensation of outputs 16 to 20 

LEVEL 

Trimmer

 

Adjusts

1

 the video signal level of outputs 16 to 20 

EQ. 

Trimmer

 

Adjusts

1

 the video EQ. (equalization) compensation of outputs 11 to 15 

LEVEL 

Trimmer

 

Adjusts

1

 the video signal level of outputs 11 to 15 

EQ. 

Trimmer

 

Adjusts

1

 the video EQ. (equalization) compensation of outputs 6 to 10 

LEVEL 

Trimmer

 

Adjusts

1

 the video signal level of outputs 6 to 10 

10 

EQ. 

Trimmer

 

Adjusts

1

 the video EQ. (equalization) compensation of outputs 1 to 5 

11 

LEVEL 

Trimmer

 

Adjusts

1

 the video signal level of outputs 1 to 5 

12 

TERMINATION Button 

Pushing in selects 75 , releasing selects Hi-Z

2

 

Table 2: Rear Panel VM-25 Video Distribution Amplifier Features 

Feature 

Function 

13 

INPUT

 RCA Connector

 

Connects to the video source 

14 

LOOP

 RCA Connector 

For looping (if required) 

15 

OUT 

RCA Connectors

 

Connect to the composite video acceptors (from 1 to 25) 

16 

12 V DC IN

 

+12V DC connector for powering the unit  

4  Using the VM-25 Video Distribution Amplifier 

You can connect: 

A single 

VM-25

 unit (see section 4.1) 

Several 

VM-25

 units to increase the number of outputs (see section 4.2) 

4.1  Connecting a VM-25 Video Distribution Amplifier 

To connect the 

VM-25

 as a 1:25 video DA

3

 (see Figure 2), do the following

4

1.  Connect a composite video source (for example, a composite video 

player) to the INPUT RCA connector. 

2.  Connect up to 25 OUT RCA connectors

5

 to the video acceptors (for 

example, composite video displays). 

                                                       

 

1 Insert a screwdriver into the hole and carefully rotate it, to trim the level 
2 For looping, select Hi-Z 
3

 

DA is Distribution Amplifier 

4 Switch OFF the power on each device before connecting it to your VM-25. After connecting your VM-25, switch on its 
power and then switch on the power on each device 
5 As required. Up to 25 outputs can be connected on the VM-25. Not all outputs need to be connected 

Summary of Contents for VM-25

Page 1: ...Kramer Electronics Ltd USER MANUAL Model VM 25 1 25 Video Distribution Amplifier...

Page 2: ...s 6 5 Technical Specifications 8 Figures Figure 1 VM 25 1 25 Video Distribution Amplifier 3 Figure 2 Connecting the VM 25 5 Figure 3 Increasing the Outputs Arranging a 1 75 Video DA 7 Tables Table 1 F...

Page 3: ...the user manual Caution No operator serviceable parts inside unit Warning Use only the Kramer Electronics input power wall adapter that is provided with this unit1 Warning Disconnect power and unplug...

Page 4: ...etting 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 hi...

Page 5: ...terioration in signal quality due to poor matching and elevated noise levels often associated with low quality cables Avoiding interference from neighboring electrical appliances and positioning your...

Page 6: ...Overview 3 Figure 1 VM 25 1 25 Video Distribution Amplifier...

Page 7: ...leasing selects Hi Z 2 Table 2 Rear Panel VM 25 Video Distribution Amplifier Features Feature Function 13 INPUT RCA Connector Connects to the video source 14 LOOP RCA Connector For looping if required...

Page 8: ...ion equalization level Display 25 Display 1 Composite Video Player Figure 2 Connecting the VM 25 1 Since the LOOP output is not being used in this example 2 Insert a screwdriver into the hole and care...

Page 9: ...On the first and second VM 25 units release the TERMINATION button On the third VM 25 unit push in the TERMINATION button to terminate the line to 75 5 On each VM 25 unit Connect the 12V DC power ada...

Page 10: ...Using the VM 25 Video Distribution Amplifier 7 Composite Video Player Display 1 Display 25 Display 26 Display 50 Display 51 Display 75 Figure 3 Increasing the Outputs Arranging a 1 75 Video DA...

Page 11: ...A connectors OUTPUTS 25 composite video on RCA connectors MAX OUTPUT LEVEL 1 7Vpp BANDWIDTH 3dB 433MHz DIFF GAIN 0 08 DIFF PHASE 0 005 Deg K FACTOR 0 05 S N RATIO 74dB RMS CONTROLS Front panel accessi...

Page 12: ...iginal dated invoice or a copy must be presented as proof of warranty coverage and should be included in any shipment of the product Please also include in any mailing a contact name company address a...

Page 13: ...ail info kramerel com P N 2900 000036 REV 1 For the latest information on our products and a list of Kramer distributors visit our Web site www kramerelectronics com where updates to this user manual...

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