Service 2
Keysight 53210A/53220A/53230A Assembly Level Service Guide 115
3 When the code data entry is what you want, press the Lock Cal softkey to enter
the data into the counter.
– The data entry area and Secure Code areas change to all dash ( -- )
characters when the code is accepted.
–The Lock Cal softkey changes to Unlock Cal.
–The Cal Count is incremented only if a new secure code was entered.
The first character in the code MUST be a letter (A to Z).
IMPORTANT! Be sure to write down the calibration security code you enter
before you lock the counter. Once the counter is locked, there is no way on
the counter to tell what the code is. However, there is a procedure that can
be used to reset the secure code to null so that a new code can be entered.
Refer to “Resetting the security code to a null” on page 151.
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