Kramer VS-402XL User manual

Kramer Electronics, Ltd.
USER MANUAL
Models:

VS - 402xl, 4x2 Vertical Interval Video-Audio Matrix Switcher
VS - 602xl, 6x2 Vertical Interval Video-Audio Matrix Switcher

Contents
i
Contents
1 Introduction 1
2 Getting Started 1
3 Overview 2
4 Your Vertical Interval Video-Audio Matrix Switcher 2
5 Connecting a Vertical Interval Video-Audio Matrix Switcher 5
5.1 Controlling via RS-232 (for example, using a PC) 6
5.2 Controlling via RS-485 6
5.3 Setting the Dipswitches 7
5.3.1 Setting the MACHINE # 8
5.4 Connecting the REMOTE Connector 9
6 Cascading Vertical Interval Video-Audio Matrix Switchers 10
6.1 Cascading Units in an Input Expansion Configuration 10
6.2 Cascading a set of Units in a (RGB) Parallel Configuration 12
6.3 Cascading Individual Units in a Control Configuration 14
6.3.1 Control Configuration via RS-232 and RS-485 14
6.3.2 Control Configuration via RS-485 15
6.4 Looping Units in an Increased Output Configuration 16
7 Operating the Vertical Interval Video-Audio Matrix Switcher 17
7.1 Choosing the Audio-Follow-Video or Breakaway Option 18
7.1.1 Setting the Audio-Follow-Video Option 18
7.1.2 Setting the Breakaway Option 18
8 Technical Specifications 18
9 Table of Hex Codes for Serial Communication 19
10 Communication Protocol 20
Figures
Figure 1: Vertical Interval Video-Audio Matrix Switchers 3
Figure 2: VS-602xl Underside 5
Figure 3: Connecting a PC without using a Null-modem Adapter 6
Figure 4: Controlling via RS-485 (for example, using a VS-3000) 7
Figure 5: SETUP Set of 8 Dipswitches 8
Figure 6: Remote Connector PIN # Settings 9
Figure 7: Cascading Units in an Input Expansion Configuration 12
Figure 8: Cascading a set of 3 Units in a (RGB) Parallel Configuration 13
Figure 9: Cascading Individual Units in a Control Configuration via RS-232 and RS-485 15
Figure 10: Cascading Individual Units in a Control Configuration via RS-485 16
Figure 11: Adding Outputs by Looping Units 17

Contents
KRAMER ELECTRONICS, LTD.
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Tables
Table 1: Front Panel Vertical Interval Video-Audio Matrix Switcher Features 4
Table 2: Rear Panel Vertical Interval Video-Audio Matrix Switcher Features 4
Table 3: VS-602xl Underside Features 5
Table 4: Dipswitch Settings 8
Table 5: Machine # Dipswitch Settings 9
Table 6: Technical Specifications of the Vertical Interval Video-Audio Matrix Switcher 19
Table 7: VS-402xl/VS-602xl Hex Codes for Switching via RS-232/RS-485 19
Table 8: Protocol Definitions 20
Table 9: Instruction Codes 21

Introduction
1
1 Introduction
Dedication by Kramer Electronics since 1981, to the development and
manufacture of high quality video/audio equipment, makes the Kramer line
an integral part of the finest production and presentation facilities in the
world. In recent years, Kramer has redesigned and upgraded most of the line,
making the best even better! The Kramer 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 our high quality Kramer switchers and matrices, we
also offer excellent distribution amplifiers, remote controllers, processors,
interfaces, scalers and computer-related products.
Congratulations on purchasing your Kramer VS-402xl 4x2 Vertical Interval
Video-Audio Matrix Switcher and/or VS-602xl 6x2 Vertical Interval
Video-Audio Matrix Switcher.
Your Kramer VS-402xl/VS-602xl is ideal for the following typical
applications:
 Live broadcast or presentation applications such as switching between
cameras in real-time
 CCTV, home theater
 Rental and staging applications
 Video production studios
The VS-402xl and/or the VS-602xl package includes the following items:
 Vertical Interval Video-Audio Matrix Switcher
 Power cord
 Windows 95/98/NT
TM
Kramer control software
 Null-modem adapter
 This user manual
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

Overview
KRAMER ELECTRONICS, LTD.
2
3 Overview
The Kramer VS-602xl (a 6x2 switcher) and VS-402xl (a 4x2 switcher) are
high performance vertical interval matrix switchers for composite video and
stereo balanced audio signals. Both are true matrix switchers - enabling the
user to route any input to any or all outputs simultaneously.
In addition, both the VS-602xl and the VS-402xl:
 Have video bandwidth that exceeds 300 MHz, ensuring that they remain
transparent even in the most critical applications
 Include audio-follow-video or audio breakaway option
 Produce glitch-free transitions, when sources share a common reference
sync
1
 Include 2 sets of INPUT SELECTOR buttons (one set for each output)
and 5 front panel control buttons
 Include 2 duplicate outputs per set of INPUT SELECTOR buttons (4
outputs in total)
 Include a “Take” button
2
for precise switch control and a “Lock” button
to prevent tampering with the front panel
 Are controllable via the front panel buttons, or remotely by RS-485 or
RS-232 serial commands transmitted by a touch screen system, PC, or other
serial controller
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 associated with low quality cables)
 Avoiding interference from neighboring electrical appliances that may
adversely influence signal quality
 Positioning your Kramer VS-402xl or VS-602xl in a location free from
moisture and away from excessive sunlight and dust
4 Your Vertical Interval Video-Audio Matrix Switcher
Figure 1 illustrates the front and rear panels of both the VS-402xl and the
VS-602xl. Tables 1 and 2 define their front and rear panels.
1 As it switches during the vertical interval
2 Also enables the user to place multiple switches in a queue and then activate them with one touch of this button, or via a
single serial command

Your Vertical Interval Video-Audio Matrix Switcher
3
Figure 1: Vertical Interval Video-Audio Matrix Switchers

Your Vertical Interval Video-Audio Matrix Switcher
KRAMER ELECTRONICS, LTD.
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Table 1: Front Panel Vertical Interval Video-Audio Matrix Switcher Features
# Feature Function
1 Power Switch Illuminated switch supplying power to the unit
2 INPUT SELECTOR TO
OUTPUT 1 Buttons
1
Select the input to switch to OUTPUTS 1A and 1B
3 INPUT SELECTOR TO
OUTPUT 2 Buttons
1
Select the input to switch to OUTPUTS 2A and 2B
4 VIDEO Button
2
When pressed actions relate to video
5 AUDIO Button
2
When pressed actions relate to audio
6 AFV Button
3
When pressed audio channels follow the video channels
7 TAKE Button Pressing TAKE toggles the mode between the CONFIRM mode
4
and
the AT ONCE mode (user confirmation per action is unnecessary)
8 LOCK Button Disengages the front panel switches
Table 2: Rear Panel Vertical Interval Video-Audio Matrix Switcher Features
# Feature Function
1 AUDIO INPUTS Terminal
Block Connectors
1
Connects the audio sources
2 SYNC BNC Connector Connects to the external SYNC source
3 Sync Source Selector
(IN=Internal) Button
Pushing in selects internal sync
5
, releasing selects the external sync
6
source
4 IN BNC Connectors
1
Connects the composite video sources
5 LOOP BNC Connectors
1
For looping to increase output availability
6 AUDIO OUTPUTS Terminal
Block Connectors
Connects the 2 audio acceptors
7 RS-485 Connector RS-485 detachable terminal block port
8 V/A BUS Connector DB9F connector connects to the V/A BUS Connector on the next
unit(s) via a short DB9M flat cable when cascading in an input
expansion configuration
9 RS-232 Connector DB 9F connector connects to PC or other Serial Controller
10
OUTPUTS 1A; 1B; 2A; 2B
BNC Connectors
Connects to the output acceptors
11
SETUP Dipswitches for setup
12
REMOTE Connector Attach a specific PIN to PIN 9 or PIN 10 to switch an input via a
remote dry contact switch
7
(refer to section 5.4)
13
Power Connector with Fuse AC connector enabling power supply to the unit
1 Four on the VS-402xl; six on the VS-602xl
2 Refer to section 7.1.2
3 Refer to section 7.1.1
4 When in Confirm mode, the TAKE button illuminates
5 On the IN 1 connector
6 On the SYNC connector
7 The appropriate front panel INPUT SELECTOR button illuminates

Connecting a Vertical Interval Video-Audio Matrix Switcher
5
Figure 2 and Table 3 define the 6 TERM switches and the 4 trimmers on the
underside of the VS-602xl unit
1
. Figure 2 shows to which LOOP connector
each TERM switch relates and the location of the Trimmers for adjusting
OUTPUTS 1 and 2 and for adjusting EQ. 1 and EQ. 2.
Figure 2: VS-602xl Underside
Table 3: VS-602xl Underside Features
# Feature Function
1 TERM Switch Move to the right (ON position) to terminate with 75 , or move to the
left for looping
2
2 LEVEL Trimmers Adjusts
3
the output signal level for OUTPUTS 1 and 2
3 EQ. Trimmers Adjusts
3
the equalization level (EQ.) for OUTPUTS 1 and 2
5 Connecting a Vertical Interval Video-Audio Matrix Switcher
To connect the VS-402xl/VS-602xl, connect the following
4
to the rear panel:
1. The composite video sources and acceptors, as well as the appropriate
audio sources and acceptors.
2. The power cord.
1 The underside of the VS-402xl unit contains only 4 TERM switches
2 The factory default
3 Insert a screwdriver into the small hole and carefully rotate it, trimming the OUTPUT level or EQ level
4 Switch OFF the power on each device before connecting it to your VS-402xl/VS-602xl Switcher. After connecting your
VS-402xl/VS-602xl Switcher, switch on its power and then switch on the power on each device. Switching on the
VS-402xl/VS-602xl Switcher, recalls the last status prior to powering down

Connecting a Vertical Interval Video-Audio Matrix Switcher
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In addition, you can choose to connect the following options:
 A PC (when using the Kramer Control software, for example) or other
RS-232 (refer to section 5.1) or RS-485 controller (refer to section 5.2).
 A remote dry contact switch (refer to section 5.4)
5.1 Controlling via RS-232 (for example, using a PC)
To connect a PC to the VS-402xl/VS-602xl unit, using the Null-modem
adapter provided with the machine (recommended):
 Connect the RS-232 DB9 rear panel port on the VS-402xl/VS-602xl unit
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 VS-402xl/VS-602xl unit, 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 VS-402xl/VS-602xl unit, as Figure 3 illustrates (depending on
whether the PC has a 9-pin or 25-pin connector)
Figure 3: Connecting a PC without using a Null-modem Adapter
You can connect up to 8 VS-402xl/VS-602xl units to the PC via the
Null-modem adapter and the RS-232 port, and the RS-485 ports, as Figure 9
illustrates.
5.2 Controlling via RS-485
You can control a VS-402xl/VS-602xl unit via an RS-485 controller, for
example, a PC (equipped with an RS-485 interface) or a Master
Programmable Remote Control system such as the Kramer VS-3000.

Connecting a Vertical Interval Video-Audio Matrix Switcher
7
To connect a VS-3000 to a VS-402xl/VS-602xl unit
1
(see Figure 4):
1. Connect the RS-485 terminal block port on the VS-3000 to the RS-485
port on the VS-402xl/VS-602xl unit, as follows:
 Connect the “ A” (+) PIN on the RS-485 rear panel port of the VS-3000 to
the “ A” (+) PIN on the RS-485 rear panel port of the VS-402xl/VS-602xl unit
 Connect the “ B” (-) PIN on the RS-485 rear panel port of the VS-3000 to
the “ B” (-) PIN on the RS-485 rear panel port of the VS-402xl/VS-602xl unit
 If shielded twisted pair cable is used, the shield may be connected to the
“ G” (Ground) PIN on one of the units (for example, on the VS-3000)
2. Set the VS-402xl/VS-602xl unit as MACHINE # 1, according to Table 5
3. Set the SETUP dipswitches on the VS-402xl/VS-602xl unit, as follows:
 Set Dip 4 ON, Dip 6 ON and Dip 7 ON
 Set Dip 5, and Dip 8 OFF
Figure 4: Controlling via RS-485 (for example, using a VS-3000)
5.3 Setting the Dipswitches
Figure 5 illustrates the factory default SETUP dipswitches:
1 You can control up to 8 VS-402xl/VS-602xl units, as section 6.3.2 describes

Connecting a Vertical Interval Video-Audio Matrix Switcher
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Figure 5: SETUP Set of 8 Dipswitches
Table 4: Dipswitch Settings
Function DIPS Description
Machine # 1, 2, 3
Determines the position of a unit in the sequence (refer to section 5.3.1)
RS-485 Termination
4 Set ON to terminate the RS-485 line on the first and last cascaded units
(refer to section 6.1)
Input Expansion 5 Set ON to enable input expansion mode (refer to section 6.1)
Reply 6 Set ON to enable the Reply option in accordance with Protocol 2000
PC 485 7 Set ON when connecting the PC (or other controller) via the RS-485 port,
set OFF when connecting the PC via the RS-232 port or when not
connecting a PC
5.3.1 Setting the MACHINE #
The MACHINE # determines the position of a VS-402xl/VS-602xl unit or a
set of VS-402xl/VS-602xl units in the sequence
1
, specifying which
VS-402xl/VS-602xl unit is being controlled when several
VS-402xl/VS-602xl units connect to a PC or serial controller. Set the
MACHINE # on a VS-402xl/VS-602xl unit via DIPS 1, 2 and 3, according to
Table 5.
When using a stand-alone VS-402xl/VS-602xl unit, set the MACHINE # to 1.
When connecting more than one VS-402xl/VS-602xl unit, set the first
machine (the Master) that is closest to the PC, as MACHINE # 1
2
.
1 Set the MACHINE # on the first unit to one, on the second unit to 2, on the third unit to 3
2 Set the dipswitches to ON

Connecting a Vertical Interval Video-Audio Matrix Switcher
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Table 5: Machine # Dipswitch Settings
DIPSWITCH MACHINE #
1 2 3
1
Master
OFF
OFF
OFF
2 ON OFF
OFF
3 OFF
ON OFF
4 ON ON OFF
5 OFF
OFF
ON
6 ON OFF
ON
7 OFF
ON ON
8 ON ON ON
5.4 Connecting the REMOTE Connector
Connecting the REMOTE DB15F connector to a dry contact switch enables
you to route an input to an output by remote control. To do so, touch
(momentarily) the PIN corresponding to that input to PIN 9
1
(for output # 2)
or PIN 10 (for output # 1). For example, to connect input # 1 to output # 1,
touch PIN 1 to PIN 10; to connect input # 2 to output # 1, touch PIN 2 to PIN
10. To connect input # 3 to output # 1, touch PIN 3 to PIN 10. To connect
input # 1 to output # 2, touch PIN 1 to PIN 9. To connect input # 2 to output #
2, touch PIN 2 to PIN 9.
Figure 6: Remote Connector PIN # Settings
1 The appropriate front panel INPUT SELECTOR button illuminates

Cascading Vertical Interval Video-Audio Matrix Switchers
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6 Cascading Vertical Interval Video-Audio Matrix Switchers
For certain applications, you may need more than just 4 or 6 inputs.
Cascading VS-402xl/VS-602xl units
1
enables you to expand the number of
inputs by looping up to 8 individual VS-402xl/VS-602xl units.
You can cascade VS-402xl/VS-602xl units, as follows:
 Up to 8 interconnected VS-402xl/VS-602xl units in an input expansion
configuration
 A set of VS-402xl/VS-602xl units in a parallel configuration (for
example, 2 VS-402xl/VS-602xl units for Y/C, 3 VS-402xl/VS-602xl units for
RGB or YUV, 4 VS-402xl/VS-602xl units for RGBS)
 Up to 8 individual VS-402xl/VS-602xl units in a control configuration
 Up to 8 interconnected VS-402xl/VS-602xl units in an output expansion
configuration
6.1 Cascading Units in an Input Expansion Configuration
You can cascade up to 8 interconnected VS-402xl/VS-602xl units to form an
input expansion configuration. For example, to create a 48 x 2 switcher, with
48 inputs and 2 outputs, connect as Figure 7 illustrates.
To cascade VS-402xl/VS-602xl units to expand the number of inputs, connect
as follows:
1. Connect the composite video sources and acceptors, as well as the
appropriate audio sources and acceptors, as section 5 describes.
2. Connect the RS-232 port on the first VS-402xl/VS-602xl unit (MACHINE
# 1) to the PC using the Null-modem adapter provided with the machine
(recommended), as section 5.1 describes.
3. Connect the RS-485 terminal block port on the first VS-402xl/VS-602xl
unit to the RS-485 port on the second VS-402xl/VS-602xl unit and so on,
connecting all the RS-485 ports, as Figure 7 illustrates.
4. Interconnect the V/A (video/audio) BUS DB9F connectors between the
VS-402xl/VS-602xl units
2
, as Figure 7 illustrates, using a 9 wire flat
cable
3
with DB9M connectors, as follows:
1 You can interconnect VS-402xl units with VS-602xl units, and you are not limited to cascading VS-602xl units with
VS-602xl units. For example, for a 10x2 vertical interval video-audio matrix switcher, interconnect a VS-402xl unit with a
VS-602xl unit
2 Ensuring double output signal transmission on outputs 1A and 1B and on outputs 2A and 2B, on 2 combined machines
3 The flat cable should be kept as short as possible to preserve video quality and minimize crosstalk

Cascading Vertical Interval Video-Audio Matrix Switchers
11
 Attach the cable’s first DB9M connector to the V/A BUS DB9F connector
on the first VS-402xl/VS-602xl unit
 Attach the cable’s second DB9M connector to the V/A BUS DB9F
connector on the second VS-402xl/VS-602xl unit
 Continue attaching the DB9M connectors to the V/A BUS DB9F
connectors on each VS-402xl/VS-602xl unit, up to and including the eighth
VS-402xl/VS-602xl unit
5. Set the SETUP dipswitches, as section 5.2 describes. In particular:
 Set the first VS-402xl/VS-602xl unit as MACHINE # 1 (when operating
via a PC or serial controller) and the following 7 VS-402xl/VS-602xl units as
MACHINE # 2 to MACHINE # 8, according to Table 5
 Set Dip 4 ON on the first and last VS-402xl/VS-602xl units (terminating
the RS-485 line at 120 ). Set Dip 4 OFF on the second to seventh
VS-402xl/VS-602xl units
 Set Dip 5 ON on all 8 VS-402xl/VS-602xl units (enabling input
expansion)
 Set Dip 6 ON on all 8 VS-402xl/VS-602xl units (enabling the Reply
option in accordance with Protocol 2000)
 Set Dip 7 OFF on all 8 VS-402xl/VS-602xl units (as the PC connects via
the RS-232 port)
 Set Dip 8 OFF on all 8 VS-402xl/VS-602xl units
Note: The output signals at OUTPUT 1 and OUTPUT 2 are the same on all
the cascaded VS-402xl/VS-602xl units.

Cascading Vertical Interval Video-Audio Matrix Switchers
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Figure 7: Cascading Units in an Input Expansion Configuration
6.2 Cascading a set of Units in a (RGB) Parallel Configuration
You can cascade a set of, for example, 3 VS-602xl units to form a 6x2 RGB
vertical interval video-audio matrix switcher in parallel configuration.
To form a 6x2 RGB vertical interval video-audio matrix switcher, do the
following:
1. Connect the video sources and acceptors, as well as the appropriate audio
sources and acceptors, by reassigning the composite video inputs, 1 to 6,
as Figure 8 illustrates, as follows:
 On the first unit, as R
1
to R
6
; on the second unit, as G
1
to G
6
; and on the
third unit, as B
1
to B
6
2. Connect the RS-232 port on the first VS-602xl unit to the PC (if required)
using the Null-modem adapter provided with the machine
(recommended), as section 5.1 describes.

Cascading Vertical Interval Video-Audio Matrix Switchers
13
3. Connect the RS-485 terminal block port on the first VS-602xl unit to the
RS-485 port on the second and third VS-602xl units.
4. Set the SETUP dipswitches, as section 5.2 describes. In particular:
 Set all the VS-602xl units with the same MACHINE # (preferably, as
MACHINE # 1)
 Set Dip 4 ON on the first and last VS-602xl units (terminating the RS-485
line at 120 ). Set Dip 4 OFF on the second VS-602xl unit
 Set Dip 5 and Dip 8 OFF on all VS-602xl units
 Set Dip 6 ON on all VS-602xl units (enabling the Reply option in
accordance with Protocol 2000)
 Set Dip 7 OFF on all VS-602xl units (if the PC connects via the RS-232
port)
Figure 8: Cascading a set of 3 Units in a (RGB) Parallel Configuration

Cascading Vertical Interval Video-Audio Matrix Switchers
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6.3 Cascading Individual Units in a Control Configuration
You can cascade up to 8 individual
1
VS-402xl/VS-602xl units with control
from a PC or serial controller.
6.3.1 Control Configuration via RS-232 and RS-485
To cascade up to 8 individual VS-402xl/VS-602xl units, via RS-232 and
RS-485, do the following:
1. Connect the composite video sources and acceptors, as well as the
appropriate audio sources and acceptors, as section 5 describes.
2. Connect the RS-232 port on the first VS-402xl/VS-602xl unit to the PC
using the Null-modem adapter provided with the machine
(recommended), as section 5.1 describes.
3. Connect the RS-485 terminal block port on the first VS-402xl/VS-602xl
unit to the RS-485 port on the second VS-402xl/VS-602xl unit and so on,
connecting all the RS-485 ports.
4. Set the SETUP dipswitches, as section 5.2 describes. In particular:
 Set the first VS-402xl/VS-602xl unit as MACHINE # 1 and the following
7 VS-402xl/VS-602xl units as MACHINE # 2 to MACHINE # 8, according to
Table 5
 Set Dip 4 ON on the first and last VS-402xl/VS-602xl units (terminating
the RS-485 line at 120 ). Set Dip 4 OFF on the other VS-402xl/VS-602xl
units
 Set Dip 6 ON on all VS-402xl/VS-602xl units (enabling the Reply option
in accordance with Protocol 2000)
 Set Dip 5 and Dip 8 OFF on all VS-402xl/VS-602xl units
 Set Dip 7 OFF on all VS-402xl/VS-602xl units (if the PC connects via the
RS-232 port)
1 But not interconnected

Cascading Vertical Interval Video-Audio Matrix Switchers
15
Figure 9: Cascading Individual Units in a Control Configuration via RS-232 and RS-485
6.3.2 Control Configuration via RS-485
To cascade up to 8 individual VS-402xl/VS-602xl units, via RS-485 (with
control via a Master Programmable Remote Control system such as the
Kramer VS-3000), do the following:
1. Connect the composite video sources and acceptors, as well as the
appropriate audio sources and acceptors, as section 5 describes.
2. Connect the “A” (+) and “B” (-) PINS on the RS-485 terminal block port
of the VS-3000 to the “A” (+) and “B” (-) PINS, respectively, on each of
the 8 VS-402xl/VS-602xl units. (If using shielded twisted pair cable, the
shield is usually connected to the “G” (Ground) PIN of the first unit).
3. Set the first VS-402xl/VS-602xl unit as MACHINE # 1 and the following
7 VS-402xl/VS-602xl units as MACHINE # 2 to MACHINE # 8,
according to Table 5.
4. Set the SETUP dipswitches on the VS-402xl/VS-602xl unit, as follows:

Cascading Vertical Interval Video-Audio Matrix Switchers
KRAMER ELECTRONICS, LTD.
16
 Set Dip 4 ON on the last unit (terminating the RS-485 line at 120 ). Set
Dip 4 OFF on the other units
 Set Dip 6 ON on all 8 units (enabling the Reply option in accordance with
Protocol 2000)
 Set Dip 5 and Dip 8 OFF on all 8 units
 Set Dip 7 ON on all units (as the PC connects via the RS-485 port)
Figure 10: Cascading Individual Units in a Control Configuration via RS-485
6.4 Looping Units in an Increased Output Configuration
You can loop up to 8 VS-402xl/VS-602xl units to increase outputs.

Operating the Vertical Interval Video-Audio Matrix Switcher
17
To form a 6x4 vertical interval video-audio matrix switcher, consisting of 2
VS-602xl units, as Figure 11 illustrates, do the following:
1. Connect the 6 composite video sources to the IN connectors on the second
VS-602xl unit.
2. Connect the 6 Loop connectors on the second VS-602xl unit to the
respective 6 input connectors on the first VS-602xl unit.
3. Connect the OUTPUTS connectors on both VS-602xl units to the
composite video acceptors.
Figure 11: Adding Outputs by Looping Units
7 Operating the Vertical Interval Video-Audio Matrix Switcher
You can operate your VS-402xl/VS-602xl via:
 The front panel buttons
 RS-232 (or RS-485
1
) serial commands transmitted by a touch screen
system, PC
2
, or other serial controller
 A remote dry contact switch
1 Set DIP 7 ON on all VS-402xl/VS-602xl units when a PC or touch screen system functions via the RS-485 serial port
2 For instructions on using the Windows 95/98/NT
TM
Control Software, refer to the separate user manual (included on the
CD-ROM in .pdf format), Kramer Control Software