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Introduction 

 

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1  Introduction 

Welcome to Kramer Electronics (since 1981): a world of unique, creative and 

affordable solutions to the infinite range of problems that confront the video, 

audio and presentation professional on a daily basis. In recent years, we have 

redesigned and upgraded most of our line, making the best even better! Our 

350-plus different models now appear in 8 Groups

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, which are clearly defined 

by function. Congratulations on purchasing your Kramer 

VP-23

 Presentation 

Switcher

.

 

This product is ideal for the following typical applications: 

Presentation and conference room systems 
Production studios, as well as rental and staging 

The package includes the following items: 

VP-23

 

Presentation Switcher

 

Power cord and Null-modem adapter 
Windows®-based Kramer control software

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This user manual

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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

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3  Overview 

The 

VP-23

 is a high quality presentation switcher designed for a wide variety 

of presentation and multimedia applications. The 

VP-23

 combines the 

functions of a 4x1 switcher for composite video and audio, a 4x1 switcher for 

s-Video and audio, and a 4x1 switcher for VGA type signals with audio. In 

addition the 

VP-23

Is a one box high performance solution for installations that would 

                                                          

 

1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3: 
Video,  Audio,  VGA/XGA  Processors;  GROUP  4:  Interfaces  and  Sync  Processors;  GROUP  5:  Twisted  Pair  Interfaces; 
GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors 
2 Downloadable from our Web site at http://www.kramerelectronics.com 
3 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com 
4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com 

Summary of Contents for VP-23

Page 1: ...Kramer Electronics Ltd USER MANUAL Model VP 23 Presentation Switcher ...

Page 2: ...P 23 Communication Protocol 9 Figures Figure 1 VP 23 Presentation Switcher 3 Figure 2 Connecting a PC without using a Null modem Adapter 6 Tables Table 1 Front Panel VP 23 Presentation Switcher Features 4 Table 2 Rear Panel VP 23 Presentation Switcher Features 4 Table 3 Dipswitch Settings 6 Table 4 Technical Specifications of the VP 23 Presentation Switcher 8 Table 5 Protocol Definitions 9 Table 6...

Page 3: ...packaging materials for possible future shipment Review the contents of this user manual Use Kramer high performance high resolution cables4 3 Overview The VP 23 is a high quality presentation switcher designed for a wide variety of presentation and multimedia applications The VP 23 combines the functions of a 4x1 switcher for composite video and audio a 4x1 switcher for s Video and audio and a 4x...

Page 4: ...ditional microphone channel by switching mixing or talk over Includes 16 selector switches and front panel control adjusters for VGA XGA output level and EQ master audio output level and microphone level Achieving the best performance means Connecting only good quality connection cables thus avoiding interference deterioration in signal quality due to poor matching and elevated noise levels often ...

Page 5: ...Your VP 23 Presentation Switcher 3 Figure 1 VP 23 Presentation Switcher ...

Page 6: ...ing out selects a condenser 3 Audio Composite Video IN RCA Connectors Connects the audio input from 1 to 4 for the composite video 4 Audio Composite Video OUT RCA Connector Connects the audio output for the composite video 5 Audio s Video IN RCA Connectors Connects the audio input from 1 to 4 for the s Video 6 Audio s Video OUT RCA Connector Connects the audio output for the s Video 7 Audio VGA XG...

Page 7: ...C to the VP 23 using the Null modem adapter provided with the machine recommended Connect the RS 232 DB9 rear panel port on the VP 23 to the Null modem adapter and connect the Null modem adapter with a 9 wire flat cable to the RS 232 DB9 port on your PC To connect a PC to the VP 23 without using a Null modem adapter Connect the RS 232 DB9 port on your PC to the RS 232 DB9 rear panel port on the VP...

Page 8: ...just the dipswitches on the other units according to Table 3 Table 3 Dipswitch Settings Self Address Dipswitch Machine 3 2 1 0 1 2 3 4 1 Master 0 0 0 0 ON ON ON ON 2 0 0 0 1 ON ON ON OFF 3 0 0 1 0 ON ON OFF ON 4 0 0 1 1 ON ON OFF OFF 5 0 1 0 0 ON OFF ON ON 6 0 1 0 1 ON OFF ON OFF 7 0 1 1 0 ON OFF OFF ON 8 0 1 1 1 ON OFF OFF OFF 9 1 0 0 0 OFF ON ON ON 10 1 0 0 1 OFF ON ON OFF 11 1 0 1 0 OFF ON OFF ...

Page 9: ...ou can switch one of the 4 CV inputs one of the 4 Y C inputs and one of the 4 VGA XGA inputs to the corresponding CV Y C or VGA XGA outputs respectively To switch an input to an output Press one4 button from the set of 4 buttons in the Video CV Audio section and or5 one button from the set of 4 buttons in the s Video Y C Audio section and or one button from the set of 4 buttons in the VGA XGA Audi...

Page 10: ...p connectors 4 composite video 1Vpp 75 on BNC connectors Each input is accompanied by the appropriate audio stereo channels 4dBm 50 k on RCA connectors Mic 3mV 10 k OUTPUTS 1 x VGA XGA 1 s Video 1 Vpp Y 0 3Vpp C 75 on a 4p connector 1 composite video 1 Vpp 75 on a BNC connector Each output is accompanied by the appropriate audio stereo channel 4dBm 150 1 master audio 4dBm 150 MAX OUTPUT LEVEL VIDE...

Page 11: ... PC to the switchers and high for information sent to the PC N5 N0 INSTRUCTION The function that is to be performed by the switcher s is defined by this 6 bits Similarly if a function is performed via the machine s keyboard then these bits are set with the INSTRUCTION NO which was performed The instruction codes are defined according to the table below INSTRUCTION NO is the value to be set for N5 ...

Page 12: ...posite video group 1000 0001 Machine 1 master Was sent from the PC then the switcher machine 1 will switch input 2 in composite video group to its output If the user switched input 4 in the VGA group via the front panel keypad then the switcher will send 0100 0001 1000 0100 1000 0011 1000 0001 to the PC When the PC sends instruction 1 or 2 to the switcher then if the instruction is valid the switc...

Page 13: ...value of the INPUT and OUTPUT the INPUT representing the number in front of the decimal point and the OUTPUT representing the number following the decimal point For example for version 3 5 the reply will be 0111 1101 1000 0011 i e 128 3 1000 0101 i e 128 5 1000 0001 Table 7 Video and Audio Switch Commands HEX OUT 1 CV GROUP OUT 2 Y C GROUP OUT 3 VGA GROUP 01 01 01 80 80 80 81 82 83 OFF 81 81 81 01...

Page 14: ... is required the original 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 and a description of the problem s 3 For the name of the nearest Kramer authorized service center consult your authorized dealer LIMITATION OF IMPLIED WARRANTIES All implied warranti...

Page 15: ...mail info kramerel com P N 2900 002044 REV 4 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 may be found We welcome your questions comments and feedback ...

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