Kramer Electronics VS-848 - Manual (Page 23)

Connecting the VS-808xl Video/Audio Matrix Switcher
KRAMER: SIMPLE CREATIVE TECHNOLOGY
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6.3 Controlling via RS-232 and RS-485
You can control up to eight single VS-808xl units with control from a PC
via RS-232 (see section 6.2) and RS-485 as illustrated in Figure 9.
To control via RS-232 and RS-485, do as follows:
1. Connect the video sources and acceptors, the appropriate audio sources and
acceptors, and the power cord to each VS-808xl unit.
2. On each VS-808xl unit, set the Self Address DIP-switches, as required 1 (see
Table 6).
3. Connect the RS-232 port on the first unit to the computer 2 .
4. Interconnect the RS-485 ports on all the VS-808xl units: from the RS-485
port on the first VS-808xl unit, to the RS-485 port on the second VS-808xl
unit, and so on – up to the RS-485 port on the last unit.
5. Terminate the RS-485 line as described in section 6.1.2.
Figure 9: RS-232 and RS-485 Operation
1 The first unit (the master) will be set to Self Address = 1
2 As in section 6.2