User's Manual

Digital Multimeters
Calibration Adjustments
17
If the revision number is 010:
4. Remove the PCB from the top case.
5. Apply power to the PCB by clipping on a dc voltage between 3.5 V and 5 V at the
test points marked “+” and “-” at the edge of the board. See Figure 3.
5
TP2
TP1
S7
S11
3.5 - 5 V
6
6
7
8
7
2X-2- 3001 REV 010
2X-2- 3001 REV 010
gaq101.eps
Figure 3. Revision 010 Board Layout
6. While shorting across keypad button S7, turn the rotary switch one position
clockwise. See Figure 3.
7. Short across keypad button S11. See Figure 3.
8. Turn the rotary switch one position counterclockwise, back to its original position.
9. The default password is now restored.
10. Reassemble the Meter before performing adjustments or testing.