Rs232/Rs422; Rs232/422 Pin Assignment - HP E4418B User Manual

Power Meter Operation
Configuring the Remote Interface

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
Remote Interface Select Interface RS232
RS232/422 Connector
The serial port connector is a 9 pin male D-type wired as shown in
Figure 2-18.
Figure 2-18: RS232/422 Pin Assignment
2 3 4 5
1
6 7 8 9
2-54
,
Pin
1
2
3
4
5
6
7
8
9
System
Inputs
, or .
RS422
RS232 RS422
DCD CTS-
Rx Rx-
Tx Tx+
DTR Tx-
GND GND
DSR Rx+
RTS RTS+
CTS CTS+
RI RTS-
HP E4418B User's Guide
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