Kramer Electronics VP-23RC

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Controlling the VP-23RC

8.2 Controlling Additional Kramer Machines via RS-232 and RS-485

You can cascade other Kramer machines

together with the VP-23RC via the

RS-485 port, and control them via the SWITCHER CONTROL RS-232 port

using a PC.

To connect two Kramer VP-8x8A machines to the VP-23RC, via RS-485, as

illustrated in the example in Figure 13, do the following:

1. Connect the audio/video sources and acceptors on the VP-23RC and on the

additional Kramer machines (refer to the relevant user manuals for

installation instructions).

2. Connect the RS-232 port on the VP-23RC unit to the PC using the

Null-modem adapter provided with the machine (recommended), as section

8.1.1 describes.

3. Connect the RS-485 terminal block port on the VP-23RC to the RS-485 port

on the first VP-8x8A. Connect the RS-485 port on the first VP-8x8A to the

RS-485 port on the second VP-8x8A machine.

4. Set the dipswitches as follows:

 Set the Machine number of each of the other units to a

machine number other than machine number 1

 Set Dip 4 ON on the VP-23RC (RS-485 TERM) and

terminate the RS-485 line on the last unit

8.2.1 The Presentation Switcher Section Dipswitches

The Switcher setup dipswitches are located in the SWITCHER CONTROL

area of the rear panel. Table 8 and Figure 12 define the factory default

dipswitch settings

Table 8: Dipswitch Settings

DIPS Function Description

1, 2, 3 Not used Set to OFF

4 RS-485

TERM ON for RS-485 Line Termination with 120;

OFF for no RS-485 Line Termination

OFF

1 2 3 4

Figure 12: Default

Dipswitch Settings

1 But not other VP-23RC machines

2 By default, all dipswitches are set to OFF