Witschi Electronic Ltd Analyzer Q1 Page 39
Chopping level (drive level): Programmable, 37.5 – 100 % in steps of 6.25 %.
Fixed chopping frequency: 1024 Hz.
Voltage: Programmable from 0 to 3.5 V.
Buzzer test: Bipolar square wave signal, frequency 2 kHz.
Programmable voltage from 0 to 3.5 V.
20.2 Additional Functions
Help
Information about the selected function that can be accessed directly from the measurement.
Parameters: Information about the choice of parameters.
Results: Information pertaining to the interpretation of results.
Clock
Date and time are displayed in the result field and printed in the measurement log.
An acoustic minute signal (for timing watches) can be turned on and off in the setup.
Temperature measurement
The temperature is displayed in the result field and can be printed in the measurement log.
20.3 Options
Result Printout, Data Transfer to a PC
A printer to produce a hard copy of the measurement results is available as an option. The results can
also be transferred to a PC for additional processing; a software program for viewing and archiving the
results is available as an option. Data are simultaneously transferred to the printer and PC interfaces.
Pressing the Print key causes the numerical results to be printed. In addition, the date and time, the
temperature and a customisable title can be included in the printout (to be selected in the Setup). A
longer pressure on the Print key causes the current display to be graphically printed. Measurements
can be continuously (whenever a new result is available) transferred (to be selected in the setup).
GPS Synchronisation
A GPS receiver, available as an option, synchronises the internal time base with the highly accurate
GPS time signal. When the instrument is synchronised with the GPS, the internal clock is also
compared at regular intervals with the GPS clock and corrected if necessary.
20.4 General Data
Time base
Pre-aged quartz time base stabilised in temperature.
Temperature stability: 10° - 40° ± 0.004 s/24h.
Aging after one year: less than ± 0.03 s/24h.
Optional synchronisation with GPS receiver (option)
Accuracy: ± 0.001 s/24h.
No influence on accuracy from aging or temperature.
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