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Chapter 3 Programming Your Universal Counter for Remote Operation
Elements of SCPI Commands
A detailed description of each bit in the Questionable Data/Signal Status Register
Group follows:
Bits 0–1 are not used.
Bit 2 (Time) is a condition bit which indicates that the Time
measurements (Period, Time Interval, Rise/Fall Time, Pulse Width, and
Duty Cycle) may be affected by the disabling of automatic interpolator
calibration.
The condition bit is TRUE when automatic interpolator calibration is
disabled. The condition bit is FALSE when automatic interpolator
calibration is enabled.
Bits 3–4 are not used.
Bit 5 (Frequency) is a condition bit which indicates that
Frequency measurements (this does not include the Frequency Ratio
measurements) may be affected by the disabling of automatic interpolator
calibration.
The condition bit is TRUE when automatic interpolator calibration is
disabled. The condition bit is FALSE when automatic interpolator
calibration is enabled.
Bit 6 (Phase) is a condition bit which indicates that Phase measurements
may be affected by the disabling of automatic interpolator calibration.
The condition bit is TRUE when automatic interpolator calibration is
disabled. The condition bit is FALSE when automatic interpolator
calibration is enabled.
Bit 7 is not used.
Bit 8 (Calibration Error) is an event bit which indicates that one of the
following has occurred: 1) an HP-IB invoked calibration failed, 2) a front-
panel invoked calibration failed, 3) an automatic interpolator calibration
failed during the measurement cycle, or 4) an automatic measurement
calibration failed during the measurement cycle.
Since this is an event bit, the transition filters have no effect on this bit.
Bit 9 is not used.
Programming Guide
3-33
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