User`s manual
STATus
The STATus subsystem controls the SCPI-defined Operation and Questionable
Signal status registers. Each is comprised of a Condition Register, an Event
Register, an enable mask, and negative and positive transition filters.
Each Status Register works as follows:
When a condition occurs, the appropriate bit in the Condition Register is set or cleared.
If the corresponding transition filter is enabled for that bit, the same bit is set in the
associated Event Register. The contents of the Event Register and the enable mask are
logically ANDed bit-for-bit; if any bit of the result is set, the Summary bit for that
register is set in the status byte. The Status Byte Summary bit for the Operation Status
Register is bit 7; for the Questionable Signal Status Register, bit 3.
Operation Status
Register
Only bits 0 (calibrating), 3 (sweeping), 6 (waiting for arm), and 8 (initiated) are
defined for the Agilent E1445A. All other bits are always zero.
Bit 0 - Calibrating: Set (1) during the execution of the
CALibration[:DC]:BEGin
command. Cleared (0) at the end of DC calibration or if calibration is aborted.
Bit 3 - Sweeping: Set (1) while a frequency sweep or list is in progress.
Cleared (0) when waveform generation is halted, when frequency sweeping or
lists are not selected, and at the end of each sweep or list.
Bit 6 - Waiting for Arm:ARM Set (1) when waiting for a start arm. Cleared
(0) when a start arm is accepted or when waveform generation is aborted.
Bit 8 - Initiated: Set (1) by the
INITiate:IMMediate command. Cleared (0)
when waveform generation is complete and the trigger subsystem returns to the
idle state.
Questionable
Signal Status
Register
Only bits 5 (frequency) and 8 (calibration) are defined. All other bits are always 0.
Bit 5 - Frequency: Set (1) when the
[SOURce:]FREQuency2 divide-by-n
frequency generator is selected and the generated frequency differs from the
specified frequency by greater than 1%. Cleared (0) otherwise.
Bit 8 - Calibration: Set (1) if an error has been detected in the non-volatile
calibration memory. Cleared (0) otherwise.
STATus
Chapter 8 Command Reference 381