Kramer Electronics VS-88FO - Manual (Page 17)

14 VS-88FO - Connecting the VS-88FO
To connect a device with a RS-485 port to the VS-88FO:

On the PC, connect the A (+) pin on the RS-485 port to the A (+) pin on the
RS-485 port on the rear panel of the VS-88FO

On the PC, connect the B (
–) pin on the RS-485 port to the B (–) pin on the
RS-485 port on the rear panel of the VS-88FO

On the PC, connect the G pin on the RS-485 port to the G pin on the RS-485
port on the rear panel of the VS-88FO
5.3.1 Setting the Machine Number Switches
To set the MACH # DIP-switches, as shown in Section
‎5.2.2
:

For a master machine, assign MACH #1 with the address 0 (0000) or
1 (0001) set in the DIP-switches

For the slave units, assign a unique MACH # from 2 to 15 for each VS-88FO
slave. The units do not have to be sequentially numbered but they must
have unique addresses
5.3.2 Setting the Line Termination
To ensure correct operation, the RS-485 line must be terminated at both ends.
The master unit may be located at any part of the line, but when it is at the end of
the line, the termination switch must be set ON.
To set line termination, as shown in Figure 5 :

For the VS-88FO units located at the ends of the RS-485 line, set the
RS-485 TERM DIP-switch ON

For all other VS-88FO units in the middle of the line, set the RS-485 TERM
DIP-switch OFF
5.4 Switching Genlocked Video Signals
The genlock feature lets you switch genlocked video signals according to the
timing of the GENLOCK reference input.
According to SMPTE RP-168, the sources must be genlocked to the GENLOCK input in order
to switch cleanly.
1. Connect the GENLOCK cable.