The Standard Event Register - Keysight 34420A User Manual

4 Remote Interface Reference

The Standard Event Register

The standard event register reports the following types of instrument events:
power-on detected, command syntax errors, command execution errors, self-test
or calibration errors, query errors, or when an *OPC command is executed. Any or
all of these conditions can be reported in the standard event summary bit through
the enable register. You must write a decimal value using the *ESE (event status
enable) command to set the enable register mask.
An error condition (standard event register bits 2, 3, 4, or 5) will always record
NOTE
one or more errors in the meter's error queue, with the following exception:
A reading overload condition is always reported in both the standard event
register (bit 3) and the questionable data event register (bits 0 or 9). However, no
error message is recorded in the meter's error queue.
Read the error queue using SYSTem:ERRor?.
Bit Definitions — Standard Event Register
Bit
0 Operation Complete
1 Not Used
2 Query Error
3 Device Error
4 Execution Error
5 Command Error
6 Not Used
7 Power On
182
Decimal Value Definition
All commands prior to and including an *OPC command
1
have been executed.
2 Always set to 0.
The meter tried to read the output buffer but it was
empty. Or, a new command line was received before a
4
previous query had been read. Or, both the input and
output buffers are full.
A self-test, calibration, or reading overload error
8
occurred.
An execution error occurred (see error numbers -211
16
through -230 in
A command syntax error occurred (see error numbers
32
-101 through -158 in
64 Always set to 0.
Power has been turned off and on since the last time the
128
event register was read or cleared.
Chapter 5).
Chapter 5).
Keysight 34420A User's Guide