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User's Manual

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27 II/28 II
Calibration Information
18
If the revision number is 011 or higher:
4. 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 4.
S11
4
3.5 - 5 V
5
6
S11
2X-2- 3001 REV 011
2X-2- 3001 REV 011
gaq102.eps
Figure 4. Revision 011 Board Layout
5. Turn the rotary switch from OFF to while holding down MIN MAX at the same
time. The Meter should display CAL.
6. Short across keypad button S11 on the back of the PCB. See Figure 4. The Meter
should beep.
7. Turn the rotary switch one position counterclockwise, back to the OFF position.
8. The default password is now restored.
9. Reassemble the Meter before performing adjustments or testing.