Kramer Electronics VP-108 user manual Controlling via RS-232 for example, using a PC

Connecting the VP-108 1:8 XGA / Balanced Stereo Audio DA

6.2 Controlling via RS-232 (for example, using a PC)

To connect a PC to the VP-108unit(s), using the Null-modem adapter provided with the machine (recommended):

￿Connect the RS-232 9-pin D-sub rear panel port on the VP-108unit to the Null-modem adapter and connect the Null-modem adapter with a 9-wire flat cable to the RS-232 9-pin D-sub port on your PC

To connect a PC to the VP-108unit, without using a Null-modem adapter:

￿Connect the RS-232 9-pin D-sub port on your PC to the RS-232 9-pin D-sub rear panel port on the VP-108unit, as Figure 7 illustrates

PIN 5 Connected to PIN 5 (Ground)

PIN 3 Connected to PIN 2

PIN 2 Connected to PIN 3

9-pin D-sub	9-pin D-sub
(From PC)	(Male)
￿	￿

PIN 4 is connected to PIN 6

PINs 8, 7, 1 are connected together

If a shielded cable is used, connect the shield to PIN 5

Figure 7: Connecting a VP-108 Unit to a PC without using a Null-modem Adapter

6.2.1Setting the Dipswitches

Figure 8 illustrates the factory default SETUP dipswitches:

		Figure 8: SETUP Dipswitches
		Table 3: Dipswitch Settings
Function	DIPS	Description
Machine #	1, 2, 3	Determines the position of a unit in the sequence (refer to section 0)￿
PC 485	4	Set ON when connecting the PC (or other controller) via the RS-485 port, set
		OFF when connecting the PC via the RS-232 port or when not connecting a PC

8 KRAMER: SIMPLE CREATIVE TECHNOLOGY