Agilent Technologies E4419B, User Manual

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Power Meter Operation 2
E4419B Power Meter User’s Guide 87
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
selected, 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
Setting the RS232/422 Parameters
This section explains how to set the baud rate, word size, parity, number of
stop bits, pacing, and echo for the serial interface.
Remote Interface Select Interface RS232 RS422
Pin RS232 RS422
1 DCD CTS-
2 Rx Rx-
3 Tx Tx+
4 DTR Tx-
5 GND GND
6 DSR Rx+
7 RTS RTS+
8 CTS CTS+
9 RI RTS-
1 2 3 4 5
6 7 8 9