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IEEE 488.2 Common Commands
TVS600 & TVS600A Command Reference
2–315
*ESR? (Query Only)
Returns the contents of the Standard Event Status Register as a decimal number.
More than one event may be reported at the same time. The Status Queue
contains a chronological record of the events. Table 2–6 describes the bit
assignments in the Standard Event Status Register. Reading this register clears it.
For more information on the Status and Events reporting system, refer to the
TVS600 & TVS600A Series Waveform Analyzers User Manual.
Table 2–6: The Standard Event Status Register
Bit
Decimal
Value
Function
0 1 Operation Complete shows that the operation is complete. This bit
is set when all pending operations complete following an *OPC
command.
1 2 Request Control (not used)
2 4 Query Error shows that the waveform analyzer attempted to read
the Output Queue when no data was present or pending, or that
data in the Output Queue was lost.
3 8 Device Dependent Error shows that a device error occurred. Refer
to Status and Events in the TVS600 & TVS600A Series Waveform
Analyzers User Manual for device error messages.
4 16 Execution Error shows that an error occurred while the waveform
analyzer was executing a command or query. Refer to Status and
Events in the TVS600 & TVS600A Series Waveform Analyzers User
Manual for execution error messages.
5 32 Command Error shows that an error occurred while the waveform
analyzer was parsing a command or query. Refer to Status and
Events in the TVS600 & TVS600A Series Waveform Analyzers User
Manual for command error messages.
6 64 User Request indicates that a probe ID button was pressed.
7 128 Power On shows that the waveform analyzer was powered on.
*ESR?
<event> Query response
Not applicable <NR1>
Not applicable
None
Syntax
Parameters
Reset Value
Errors and Events