Field Recalibration
4-32 72A-1230 Rev. F
July 22, 2005
For situations demanding more complete calibration, Doble offers the M4151
Field Calibration Reference. Using this option, seven current ranges can be
checked and calibrated (leaving only the three high current ranges used with a
resonator unchecked). The seven ranges tested by the M4151 are 300 µA, 1
mA, 3 mA, 10 mA, 30 mA, 100 mA, and 300 mA. These three high current
ranges not tested require both a resonator and an external capacitor for
checking and field calibration, and are not available.
To perform a Field Recalibration test:
1. Select Field Recalibration from the Diagnostics pull-down menu.
The screen shown in Figure 4.12 appears.
Figure 4.12 Field Recalibration Main Screen
2. Press F2
3. Follow the on-screen directions, as shown in Figure 4.13.