The Standard Event Register - HP 34970A User Manual

Chapter 5 Remote Interface Reference
The SCPI Status System

The Standard Event Register

The Standard Event register group reports the following types of
instrument events: power-on detected, command syntax errors,
command execution errors, self-test or calibration errors, query errors,
or the *OPC command is executed. Any or all of these conditions can be
reported to the Standard Event summary bit through the enable register.
To set the enable register mask, you must write a decimal value to the
register using the *ESE command.
An error condition (Standard Event bits 2, 3, 4, or 5) will record one or
more errors in the instrument's error queue, with the following exception:
A measurement overload condition is always reported in both the
Standard event register (bit 3) and Questionable Data event register
(bits 0, 1, 9, or 10). However, no error message is recorded in the
instrument's error queue.
Read the error queue using the SYSTem:ERRor? command.
Bit Definitions – Standard Event Register
Decimal
Bit Number
0 Operation Complete
1 Not Used
2 Query Error
3 Device Error
4 Execution Error
5 Command Error
Not Used
6
7 Power On
282
Value Definition
1 All commands prior to and including *OPC have
been executed.
2 Returns "0".
4 The instrument tried to read the output buffer but
it was empty. Or, a new command line was
received before a previous query has been read.
Or, both the input and output buffers are full.
8 A self-test or calibration error occurred (see error
numbers in the -300 range or any positive
error number in chapter 6).
16 An execution error occurred (see error numbers
in the -200 range in chapter 6).
32 A command syntax error occurred (see error
numbers in the -100 range in chapter 6).
Returns "0".
64
128 Power has been turned off and on since the last
time the event register was read or cleared.