150X Series
Calibration Manual
28
6. Press H to change the password. The Meter displays ---- if the old password is
correct. If the password is not correct, the Meter emits a double beep, displays
---- and the four key password must be entered again. Repeat step 4.
7. Press the four keys of the new password.
8. Press the blue key to store the new password.
Restoring the Default Password
If you forget the calibration password, the default password (1234) can be restored using
the following steps.
XWWarning
To avoid electrical shock or personal injury, remove the test
leads and any input signal before removing the Meter's bottom
case.
1. Remove the back case from the UUT. Leave the PCA in the top case.
2. Apply 6.0 V across the battery contact pads (J8) + and - on the PCA.
See Figure 10.
3. Short across the Cal keypad (S8) on the back of the PCA. See Figure 10.
4. Turn the rotary knob from
OFF to V. The UUT will beep and display CAL. The
default password is now restored.
5. Remove the 6.0 V supply, turn the rotary switch to
OFF, and install the back case
on the UUT.
Battery Pads
Cal Keypad
ecz17f.eps
Figure 10. Restoring the Default Password
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