Technical data

1 Performance Tests and Calibration
Calibration Security
24 34450A Service Guide
Unsecuring the instrument for calibration
Before you can adjust the instrument, you must unsecure it by entering
the correct security code. The security code is set to AT34450 when the
instrument is shipped from the factory. The security code is stored in
non- volatile memory, and does not change when power has been off or
after a Factory Reset (*RST command).
Unsecuring from the front panel
Only five characters (the third through seventh characters) of the
security code are used to unsecure the instrument from the front panel.
If there are letters instead of digits in any of the third through seventh
characters, those letters will be represented as "0" from the front panel.
Example 1
Assume the calibration security code is the factory setting of AT34450.
When unsecuring from the front panel, the code length is five characters
and the first two characters are ignored. In our example, the code now
becomes:
34450
Example 2
Assume the calibration security code was set to AT01A405 from the
remote interface. When unsecuring from the front panel, the first two
characters and any characters after the eighth through twelfth character
are ignored. In our example, the code now becomes:
01A40
From the front panel, any letters (A in this example) are represented by
0. Use this code to unsecure:
01040