Specifications

Chapter 2 Service
About the Agilent 53210A/53220A/53230A Calibration Menu
102 Assembly-Level Service Guide
To Lock the Counter:
1 Using the front panel knob and right/left arrow keys, enter the
current (or a new) security code in the data entry area (see
Figures 2-1 and 2-2).
2 The characters available to use for the security code are
selectable by rotating the knob on the front panel for each
character position in the code:
• A to Z, underline character, ( _ ), and 0 to 9.
NOTE The first character in the code MUST be a letter (A to Z).
CAUTION 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 141.
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.