International Medcom Radalert 100, Руководство по эксплуатации

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1. Start with the Radalert 100 turned off and the Mode switch set
to mR/hr.
2. Hold down the – button on the end panel while you turn the
On/Off/Audio switch to On . (Don’t use the Audio setting.)
The display shows CAL , and the Radalert 100 counts down
for 15 seconds, beeping each second. This delay gives you a
chance to move out of the field and then expose the source.
At the end of the 15 seconds, the Radalert 100 beeps several
times.
3. The Radalert 100 collects data for 60 seconds, beeping as it
does so, with CAL and the hourglass indicator flashing. At the
end of the 60 seconds, it beeps several times. The display
shows
CAL and SET . You can now seal or close the source.
4. Press the + and - buttons to adjust the reading to what it
should be. When the reading is correct, press the Set button.
The new calibration factor is automatically calculated from the
adjustment you make.
5. The new calibration factor is displayed for several seconds,
then the Radalert 100 beeps and resumes regular operation.
The calibration factor is set to 100 (percent) at the factory. If you
change the reading, for example, to 20% higher than the factory
reading, the new calibration factor would be 120. The current
calibration factor is displayed during the system check when the
Radalert 100 is first turned on.
Calibrating Electronically
You can calibrate electronically using a pulse or function
generator. Electronic calibration requires a cable with a 2.5 mm
plug, with the tip carrying the signal. Follow these steps:
1. Set the signal height to 3.3 volts (positive pulse) and the pulse
width to 80 microseconds.
CAUTION: Do not inject a pulse when the Radalert 100 is
turned off. Do not exceed 5 volts.