Remote Interface Reference 4
Keysight 34420A User’s Guide 191
RS-232 Interface Configuration
See also “Remote Interface Configuration” on page 115 in Chapter 3.
You connect the meter to the RS-232 interface using the 9-pin (DB-9) serial
connector on the rear panel. The meter is configured as a DTE (Data Terminal
Equipment) device. For all communications over the RS-232 interface, the meter
uses two handshake lines: DTR (Data Terminal Ready) on pin 4 and DSR (Data Set
Ready) on pin 6.
The following sections contain information to help you use the meter over the
RS-232 interface. The programming commands for RS-232 are listed beginning
on page 197.
RS-232 Configuration Overview
Configure the RS-232 interface using the parameters shown below. Use the
front-panel I/O MENU to select the baud rate, parity, and number of data bits (see
page 115 for more information).
– Baud Rate: 300, 600, 1200, 2400, 4800, or 9600 baud (factory setting)
– Parity and Data Bits: None / 8 data bits (factory setting)
Even / 7 data bits, or
Odd / 7 data bits
– Number of Start Bits 1 bit (fixed)
– Number of Stop Bits 2 bits (fixed)
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