7800 Multiframe Manual
7825DSK2-LG(-HD)(-3G) 3G/HD/SD Dual Downstream Keyer
Page 2-2
Revision 2.0
INSTALLATION
FILL IN 1 & 2 and KEY IN 1 & 2:
These BNC connectors are the key and fill 3G/HD/SD inputs to
the 7825DSK2-LG(-HD)(-3G). There are two FILL IN BNC connectors (FILL IN 1 and FILL
IN 2) and two KEY IN BNC connectors (KEY IN 1 and KEY IN 2) on the rear plate.
PREV OUT:
This output BNC connector is the serial component preview video output from the
7825DSK2-LG(-HD)(-3G). This preview output connector is normally connected to a
preview monitor.
PROG OUT:
This output BNC connector is the serial component program video output from the
7825DSK2-LG(-HD)(-3G). Connect this output to the next video device in your output
path. This output is protected by a bypass relay to the adjacent
PGM IN A
input BNC.
When the bypass relay is activated on power loss to the keyer, the
PROG OUT
will be a
direct relay connection to the
PGM IN A
input.
2.1.2.
Reference Video Connections
GENLOCK:
This 75 ohm terminated input is for connecting an analog video reference. Connect the
GENLOCK
connector to the reference input sync. The 7825DSK2-LG(-HD)(-3G) can also
be set to derive its timing from the input video connected to the
PGM IN A
input using the
REFERENCE
menu.
2.1.3.
Serial I/O Connections
A breakout cable (Evertz Part # WP-SERIAL-COM-1-0) is provided with each 7825DSK2-LG(-HD)(-
3G). This breakout cable connects to the
SERIAL
DB9 (Serial Control) connector on the rear plate.
The serial connectors on the breakout cable have the following serial I/O connections.
LTC IN:
This female XLR connector is an input for SMPTE/EBU linear time code, which drives the
internal clock for the insertion of “Breakfast” clock style logos.
COM B:
This 9 pin female D connector provides an RS-422 serial interface for connection to the
Remote Control Panel. This port is wired as a SMPTE 207M Tributary as shown in Table
2-1. See section 2.4 for information on connecting the remote control panel.
Pin #
Name
Description
1
GND
Chassis ground
2
Tx-
RS-422 Tx-(A) Output
3
Rx+
RS-422 Rx+(B) Input
4
GND
5
6
GND
7
Tx+
RS-422 Tx+(B) Output
8
Rx-
RS-422 Rx-(A) Input
9
GND
Table 2-1: Remote Panel Port Pin Definitions