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Rev. 1.01 8 900.0570
8-Sept-05
2.5 KEYBOARD CASCADING
It is possible to cascade up to three slave keyboards off a master keyboard that is
connected to the multiplexer / DVR and dome RS485 line. All keyboards in the cascade
can communicate with any DVR, multiplexer, or dome connected to the master.
2.5.1 Master/Slave Connection
A system of cascaded keyboards is connected as shown below.
Figure 7. SAMPLE SYSTEM OF CASCADED KEYBOARDS.
In the above system two slave keyboards are connected to a master keyboard. The
system also has two multiplexers, and two DVRs connected. And VCL (Orbiter / Rapid )
dome data is being input into the system from a control device.