Use And Care Manual

Form number TM61773-5 Rev 3 July 2010
Page 7
CALIBRATION
Calibration Preparation
1. Turn on the calibrator, allow calibrator to warm up. Perform calibration at
23±2°C (73.4°F ±3.5°F) at relative humidity of < 70%. Temperature stabilization should be
reached after 30 minutes.
2. Disconnect the test leads and turn the range switch to “OFF”.
3. Remove the screws holding the battery cover, one at the jaw, and the screw for the TightSight™
cover.
4. Remove the case bottom using care not to damage the leads of battery snap and spring
to the continuity beeper. (Beeper is attached to the bottom case cover.)
5. Using a calibrated meter ensure the battery measures a minimum of 7.5V DC.
If the battery measures under 7.5V DC, replace the battery (see Battery Replacement page 9).
Calibration Procedure
It is recommended that all IDEAL meters undergo the following calibration procedure on
an annual basis.
The class of calibrator or equipment should have an accuracy that exceeds, by an expectable ratio the
accuracy of this instrument.
Auto Calibration:
Set the short circuit 2-pin connector, mounted on PC board, from J2 to J1 position. Replace the case
bottom of the meter. It is allowed to do calibration for any one of the following functions
individually that is inaccurate. There is no need to do calibration for all functions.
V AC Calibration
1. Set Function Switch from OFF to ACV position.
2. Short the V and COM inputs on the meter. After a reading in the LCD is settled (about 5 seconds),
press MAX/MIN button until unit display reads 000.0V ± 1 digit. Zero adjustment is complete.
3. Connect the calibrator to the V and COM inputs on the meter.
4. Output AC 50V/50Hz. After a reading in the LCD is settled (about 5 seconds), press MAX/MIN
button until unit display reads 48V ~ 50V. Adjustment is complete.
5. Output AC 500V/50Hz. After a reading in the LCD is settled (about 5 seconds), press MAX/MIN
button until unit display reads 500.0V ± 2 digits. Adjustment is complete.
V DC Calibration
1. Set the function switch to DCV range. After a reading in the LCD is settled (about 5 seconds), press
MAX/MIN button until unit display reads 000.0 ± 1 digit. Zero adjustment is complete.
2. Connect the calibrator to the V and COM inputs on the meter.
3. Output DC +500V. After a reading in the LCD is settled (about 5 seconds), press MAX/MIN button
until unit display reads 500.0V ± 2 digits. Adjustment is complete.
Continuity Calibration
1. Set the function switch to Continuity range. Short the V and COM inputs on the meter. After a
reading in the LCD is settled (about 5 seconds), press MAX/MIN button until unit display reads
000.0 ± 1 digit. Zero adjustment is complete.
2. Connect the calibrator to the V and COM inputs on the meter.
3. Output 800.0 . After a reading in the LCD is settled (about 5 seconds), press MAX/MIN button
until unit display reads 800.0 ± 2 digits. Adjustment is complete.