6. Status register System
Giga-tronics 2400/2500 Microwave Synthesizer Series
174
Programming Manual, Part Number 34783, Rev A, July 2009
6.3 Standard Event Status and Standard Event Status Enable Regis-
ters
The Standard Event Status Register is one of the lower-level status registers. It monitors certain common
instrument status conditions. When a condition occurs that is being monitored by this register,
and
that
condition has been enabled by the Standard Event Status Enable Register, bit 5 is set in the Status Byte
Register. The *ESR? query can be used to read the contents of the Standard Event Status Register.
The Standard Event Status Enable Register controls which bits in the Standard Event Status Register can
set bit 5 of the Status Byte Register. The bits in the Standard Event Status Enable Register are logically
ANDed with the equivalent bits in the Standard Event Status Register, and the results of those AND
operations are logically ORed to produce a summary bit. The ESB bit (bit 5) in the Status Byte Register is
set when the logic OR operation sets the summary bit. The *ESE command can be used to set the con-
tents of the Standard Event Status Enable Register, and the *ESE? query can be used to read the
contents of the Standard Event Status Enable Register.
Table 53 describes each bit in the Standard Event Status Register.
Table 53 Standard Event Status Register Bit Assignment
Bit
Function
Description
0
Operation
complete
Operation Complete. This bit is set whenever all pending operations
are completed (such as a list computation).
1
Not used
Not used. Always 0.
2
Query error
Query Error. This bit is set whenever a query error has occurred.
3
Not used
Not used. Always 0.
4
Execution error
Execution Error. This bit is set whenever an execution error has
occurred.
5
Command error
Command Error. This bit is set whenever an invalid GPIB command
has been received.
6
Not used
Not used. Always 0.
7
Power on
occurrence
Power On Occurrence. This bit is set whenever the instrument has
been powered off and then on again during manual and remote
operation.