39/41B
Service Manual
4-14
t7f.eps
Figure 4-3. Battery Spring Adjustment
5. With the instrument in an upright position, the Cal Enable switch pads are in the
largest and leftmost hole (Figure 4-4). Using a small flat-blade screwdriver or
equivalent blunt-tipped conductive object, short together the two Cal Enable pads.
The calibration mode is enabled when the Tester displays the "CAL AMP PROBE
INPUT" menu and calibration factors. A command arrow, on the left of the display,
should point to the APPLY VRMS instruction line.
Note
Contact bounce on the Cal Enable pads may advance the Cal Prompt
beyond the 20A calibration range. In the event this happens, turn the
Tester off then on and enable calibration again.
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