Front Panel Display Messages; Measurement Result Displays - HP 53131A Operating Manual

Table 2-4. Measurement Result Displays
Display Message
NEW TIMEBASE
NO TIMEBASE
1
INTERP FAIL
1
MEAS FAIL
DOING STATS
_ _ _ _ _ _ _ _ _ _ _ _
Chapter 2 Operating Your Universal Counter

Front Panel Display Messages

Front Panel Display Messages
There are four types of displays:
•

Measurement Result Displays

• Power-Up/Self Test Messages
• Menu Messages
• HP-IB Messages
Measurement Result Displays
Probable Cause
You have selected the auto reference mode ( TIMEBAS: AUTO ) and the Counter
detected that the external reference became invalid during the measurement.
Therefore, the current result is not valid, and the Counter switches to using the
internal reference.
You have selected external reference ( TIMEBAS: EXT ) and there is no external
reference applied to the rear-panel Ref In connector, or the external signal is not
an allowed frequency.
Interpolator calibration failed on the last measurement; therefore, no valid
measurement was taken.
A measurement calibration failed on the last measurement.
You have chosen to see a statistics result and the Counter is calculating
statistics, but does not have valid statistics results yet.
There is no valid measurement available to display. The Counter may be stopped
between measurements while in Single mode, and you need to press the
Stop/Single key; or trigger level or input conditioning may need adjustment.
1
If this condition recurs, your Counter may need servicing.
Operating Guide 2-73