7800 Multiframe Manual
7825DSK2-LG(-HD)(-3G) 3G/HD/SD Dual Downstream Keyer
INSTALLATION
Revision 2.0
Page 2-3
COM C and COM D:
These 9 pin female D connectors provide serial interfaces designed for
connection to Automation Systems including the Evertz MetaCast 2 software. The ports are
also used for optional temperature probe. These ports can be individually changed to run in
either RS422 or RS232 mode by reconfiguring jumpers J19 or J20 on the 7700FC card
inside the unit. The SERIAL CONTROL C port is controlled with jumper J19 and the COM
D port is controlled with jumper J20. When they are set for the RS-232 mode of operation,
the ports have the pinout shown in Table 2-5. When they are set for the RS-422 mode of
operation the ports have the pinout shown in Table 2-2.
The RS-422 pinout for the SERIAL CONTROL and COM D ports is not a standard
SMPTE RS422 pinout. You will have to make a custom cable in order to use
these ports in the RS422 configuration.
Pin #
Name
Description
1
GND
Chassis ground
2
Tx-
RS-422 Tx-(A) Output
3
Rx-
RS-422 Rx-(A) Input
4
5
GND
6
7
Rx+
RS-422 Rx+(B) Input
8
Tx+
RS-422 Tx+(B) Output
9
GND
Table 2-2: Serial Port C and D – RS422 Pin Definitions
The function of each port must be configured using the
Serial Control
and
Com D
menu items on the
GENERAL
menu. (See section 4.5.2 for VLPRO Configuration Settings and section 5.6.7 for Remote
Control Configuration Settings).
