Power Meter Operation
Configuring the Remote Interface
2-60 Agilent E4419B User’s Guide
RS232/RS422
With RS232 selected as the serial interface the power meter
communicates through the serial port with single ended drivers and
receivers. With RS422 selsected, the serial port uses balanced drivers and
receivers.
The power meter acts as a DTE device.
To select RS232 or RS422 as the remote interface press ,
, , or .
RS232/422 Connector
The serial port connector is a 9 pin male D-type wired as shown in
Figure 2-19.
Figure 2-19: RS232/422 Pin Assignment
System
Inputs
Select Interface RS232 RS422
Pin RS232 RS422
1DCD CTS-
2Rx Rx-
3Tx Tx+
4 DTR Tx-
5GND GND
6DSR Rx+
7RTS RTS+
8CTS CTS+
9RI RTS-
1 2
34
5
6
7
8
9
HP4402.book Page 60 Thursday, November 30, 2000 1:39 PM
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