Service 2
Keysight 53210A/53220A/53230A Assembly Level Service Guide 151
– Cal String shows the current calibration string. This string is
operator-modifiable, used to record such information as the date of the last
calibration, or by whom it was performed. The Calibration String can not be
entered from the front panel keys. It can only be entered/updated using the
remote SCPI command: CALibration STRing. Refer to the Keysight 53210A/
53220A/53230A SCPI Programmer’s Reference for details of the command
format.
– Secure Code displays either all dashes ( --- ) or an operator-entered security
code that has not yet been accepted by the counter.
Resetting the security code to a null
In case a CAL security override is required at any time:
– Create a text file with the defined name “CalSecureOverride.txt” in an external
USB flash drive at the root directory. This file should be empty.
– Connect the USB drive to the counter front panel USB port.
– Power the instrument off and back on.
– At startup, the counter will detect the “CalSecureOverride.txt” empty file on
the USB flash drive and there will be a message on the front panel display:
“CAL Security Override file found. Turn OFF CAL security?” which must be
responded to within 10 seconds time.
– If the operator responds to the message (by pressing the YES soft key), the
counter will turn OFF the CALibration SECurity STATe.
– A front panel message “CAL Secure State is turned Off” will be displayed.
– As the Calibration secure state is now OFF (i.e.the counter has been
un-secured) the operator can enter a new Secure Code.
– At this point, the operator can either turn the Calibration secure state back ON
or leave the box unsecured, as desired.
–The “CalSecureOverride.txt” file is automatically erased from the USB flash drive,
regardless of the user action or non-action.
Where USB usage is not allowed, FTP can be used to input the file into the
instrument.
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