User Manual

16 VP-747 - Connecting the VP-747 Control Ports

6 Connecting the VP-747 Control Ports

This section describes how to connect the VP-747 control ports, that is, the:

• RS-232 port, see

• TO AUDIO UNIT port, see

Section 6.1

• TO CONTROLLER port, see

Section 6.2

• Ethernet port, see

Section 6.3

6.1 Connecting to the VP-747 via RS-232

Section 6.4

You can connect to the unit via a crossed RS-232 connection, using for example,

a PC. A crossed cable or null-modem is required as shown in method A and B

respectively. If a shielded cable is used, connect the shield to pin 5.

Method A (

Figure 6)—Connect the RS-232 9-pin D-sub port on the unit via a

crossed cable (only pin 2 to pin 3, pin 3 to pin 2, and pin 5 to pin 5 need be

connected) to the RS-232 9-pin D-sub port on the PC.

Note: There is no need to connect any other pins.

Figure 6: Crossed Cable RS-232 Connection

Hardware flow control is not required for this unit. In the rare case where a

controller requires hardware flow control, short pin 1 to 7 and 8, and pin 4 to 6 on

the controller side.

Method B (

Figure 7)—Connect the RS-232 9-pin D-sub port on the unit via a

straight (flat) cable to the null-modem adapter, and connect the null-modem

adapter to the RS-232 9-pin D-sub port on the PC. The straight cable usually

contains all nine wires for a full connection of the D-sub connector. Because the

null-modem adapter (that already includes the flow control jumpering described in