Kramer Electronics VP-747 - Manual (Page 21)

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
1
2
6
3
7
4
8
5
9
1
2
6
3
7
4
8
5
9
PC