User Guide

Form number TM61795 Rev 4 July 2011
Page 4
CALIBRATION
Calibration Preparation
Required Equipment
The class of calibrator or equipment should have an accuracy that exceeds, by an expectable ratio,
the
accuracy of the instrument under test.
Required fixed resistors: 0
, 5 , 19 , 190 , 0.0M , 1M , 10M , 100M , 1000M
Simulated Test leads. With a total resistance of < .1 ±10m or .05Ω per simulated lead.
Calibration Procedure
It is recommended that all IDEAL meters undergo the following calibration procedure
on an annual basis.
Calibration
1. Press the key to switch off the instrument.
2. Remove test leads from the input terminals.
3. Remove hood and battery compartment cover by using a screwdriver. (Refer to Figure 2)
4. Loosen the screws from the case bottom. Remove the case bottom.
5. Short JP1, then replace the case bottom and battery compartment cover. (Refer to Figure 1)
6. Press the key to turn on the instrument. The LCD displays the version of the software.
7. Push the “TEST” key to enter the calibration mode.
8. Press the key to select the range to calibrate.
9. Input the range standard value as listed in Table 2. Push the “TEST” key for more than 2 seconds.
The LCD will display the A/D reading value.
10. Push the “TEST” key to save the range. Calibration is complete for that range.
11. If you want to calibrate the other ranges, repeat steps 8 - 10.
12. When complete, exit the calibration mode. Press the key to switch off the instrument.
13. Remove the case bottom and remove the short on JP1. (Refer to Figure 1)
14. Replace the case bottom and battery compartment cover, pressing to close it, and secure with screw.
15. Install the hood.