Kramer Electronics VS-88HCB - Manual (Page 28)

Controlling Several VS-88HCB Units
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8.2 Control Configuration via RS-485
To control up to seven single VS-88HCB units via an RS-485 controller, for
example, a Master Programmable Remote Control system, such as the Kramer
RC-3000, or a PC (equipped with an RS-485 interface), as Figure 13
illustrates, do the following 1 :
1. Connect the video sources and acceptors, the appropriate audio sources and
acceptors, and the power cord to each VS-88HCB unit.
2. On each VS-88HCB unit, set the SELF ADDRESS # dipswitches, as required.
For example, set the first VS-88HCB unit to SELF ADDRESS # 2, the second
VS-88HCB unit to SELF ADDRESS # 3, and so on - up to SELF ADDRESS
# 8 for the seventh VS-88HCB unit (see section 6.5.1).
3. Terminate the RS-485 line on both the RC-3000 2 and on the last VS-88HCB
unit (set DIP 4 to ON).
4. Connect the RS-485 ports on the RC-3000 to the RS-485 ports on each of the
VS-88HCB units, as follows:
Connect the “ A” (+) PIN on the RS-485 rear panel port of the
RC-3000 to the “ A” (+) PIN on the RS-485 rear panel ports of the
VS-88HCB units
Connect the “ B” (-) PIN on the RS-485 rear panel port of the RC-3000
to the “ B” (-) PIN on the RS-485 rear panel ports of the VS-88HCB
units
If shielded twisted pair cable is used, the shield may be connected to
the “ G” (Ground) PIN on one of the units (for example, on the
RC-3000)
1 Switch OFF the power on each device before connecting it to your VS-88HCB. After connecting your VS-88HCB, switch
on its power and then switch on the power on each device
2 Refer to the RC-3000 user manual for details of how to terminate the RS-485 line