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 2-19.
Figure 2-19: RS232/422 Pin Assignment
1
2 3
4 5
7
8 9
6
2-60
,
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-
Agilent E4419B User's Guide
,