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Introduction
Controlling the Color Video Monitor
The color video monitor can be controlled in two
ways:
• Control from the operation panel of the monitor
• Control from the externally connected computer via
the RS-232C interface.
This interface manual explains the control method via
the RS-232C interface. For details on control from the
operation panel of the monitor, refer to the instruction
manual supplied with the color video monitor.
RS-232C Main Control Functions
This serial protocol provides the following features
when individual monitors are controlled via the RS-
232C interface.
• Parameters of the monitor can be changed without
changing the nonvolatile RAM settings.
These parameters include using sub controls to
adjust volume, contrast, aperture, brightness and
chroma, white balance, landing data and input
configuration.
• All functions that are available with the switches on
the monitor's operation panel can be changed
remotely.
• Settings and adjustments normally made with the
monitor's on-screen menu can be made remotely.
• The current monitor's parameters can be saved into
nonvolatile RAM.
• Status information can be got from the monitor by
sending the Sense commands.
Communication via the
RS-232C Interface
Connector Pin Assignment
The RS-232C connector is on the back of the monitor.
The signal assignment for the monitor are shown in the
table below.
Connector pin assignment
Pin number
Signal
1
Unused
2
RX
(Monitor M Computer)
3
TX
(Monitor m Computer)
4
Unused
5
GND
6
Unused
7
Unused
8
Unused
9
TALLY ON/OFF
Communication Parameters
Communication parameters should be set as follows.
Transmission mode
Data communication baud rate : 9600 bps
Parity:
Stop bit length
Transfer sequence
The bit composition is as follows:
1 start bit + 8 DATA bits + 1 PARITY bit + 1 STOP
bit
Start
Bit 0
Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7
bit
(LSB)
Contents
Receive Data
Transmit Data
Signal Ground
: Asynchronous, bit
serial signal
: Even
: 1
: Transmission from
lowest bit (LSB)
1
(Mark)
Parity
Stop
(MSB)
bit
bit
0
(Space)
3
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