B&K Precision 5492BGPIB - Manual - Manual (Page 56)

Remote Operation
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5.2 USB & RS-232 Interface Operation
5.2.1 RS-232 Connection
The RS-232 interface on this instrument uses a 9-pin DB9 connector. The pin outs are defined below in
Table 5-1:
Table 5-1 RS-232 Pin Out
Function Code 9 Pin Connector Pin Number
Transmitted Data TXD 3
Received Data RXD 2
Signal Ground Common GND 5
Figure 5-1 shows the rear panel connector for the RS232 interface.
Figure 5-1 Rear Panel RS232 Interface
Note: To interface with a serial port on a computer with the RS232 interface, use a NULL
MODEM or CROSS OVER serial DB-9 female to female cable. Do NOT use a straight-through
serial DB-9 cable. To check that you have the correct cable, probe pin 2 on one end and pin 3 on
the other and vice versa to check continuity.
Below is a pin connection diagram between 5492B and a computer (Figure 5-2):
Figure 5-2 RS-232 Connection Sketch
Note: Pin 4 and 6, pin 7 and 8 are shorted respectively at the end of the controller.