Calibration Procedures 4
Keysight 34970A/34972A Service Guide 73
4 Apply a short between the two exposed metal pads marked
CAL UNLOCK as shown in the figure below.
5 While maintaining the short, enter any unsecure code. The instrument is now
unsecured.
6 Remove the short.
7 Turn off the instrument and remove the power cord. Reassemble the
instrument.
Now you can enter a new security code. Be sure to remember the new security
code.
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