Overview
Remote control of the VP301 Line Multiplier is pro-
vided by an RS-232 serial interface connector
located on the rear panel of the unit. A external
controller such as a computer or integrated system
controller with an RS-232 interface may be used to
control all user accessible functions of the Video
Processor.
RS-232 controllable functions include: Video,
S-Video, RGB, Component (YUV), Brightness,
Contrast, Color, Tint, Noise Reduction, Detail
Level, Auto-Tint, Digital Filter On/Off, Freeze
On/Off, Echo On/Off, Help, Status and Return to
Factory Preset.
Communication Settings
Communication with the VP301 Video Processor is
accomplished by setting the following conditions:
9600, No Parity, 8 Data Bits and 1 Stop Bit. The
factory BUAD rate is set at 9600 but rates of 1200,
2400 and 4800 are also available.
Baud Rate Selection
To change the RS-232 BAUD rate, remove the top
cover of the VP301 Video Processor. A 4 switch
Dip switch is located on the front panel. Set the
switches from the table shown below. If the BAUD
rate is changed, the VP301
MUST
be powered off
and then on for the new BAUD rate to take effect.
INSTALLATION
Interface to the Processor is done by using a 3
wire interface. Interface schematics for the IBM-
PCª, AMXª and CRESTRONª controllers are
shown to the right.
CABLE SPECIFICATION: Computer Interface
VP301
DATA TERMINAL or
Video Processor
IBM PC
DB25 (MALE)
DB25 (FEMALE)
RxD 2
2
0
TxD
TxD 3
3
0
RxD
GROUND 7
7
0
GROUND
4
0
RTS
5
0
CTS
6
0
DSR
20 DTR
CABLE SPECIFICATION: AMX AXC-232 Interface
VP301
AMX AXC-232
Video Processor
INTERFACE
DB25 (MALE)
RxD 2
3 TxD
TxD 3
2 RxD
GROUND 7
1 GROUND
CABLE SPECIFICATION:
CRESTRON CNCOMH-2/CNMS Interface
VP301 CRESTRON CNCOMH-
2
Video Processor
INTERFACE
DB25 (MALE)
RxD 2
3 TxD
TxD 3
2 RxD
GROUND 7
5 GROUND
13
APPENDIX A
VP301 Remote Control Operation
Summary of Contents for VP301
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