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80 Multimeter Command Reference Chapter 3
:LFRequency?
CALibration:LFRequency? queries the line frequency setting.
Comments This command returns +50 for line frequency set to 400 because 400 is an even
multiple of 50.
Example Query the Line Frequency Setting
CAL:LFR?
Query the line frequency.
:SECure:CODE
CALibration:SECure:CODE <new code> enters a new calibration security code.
To change the security code, first unsecure the multimeter using the old security code
with
CAL:SEC:STAT OFF, <old code>. Then, enter the new code. The calibration
security code may contain up to 12 characters. The security code is stored in
non-volatile memory.
Comments • The security code is set to “HP_E1412” for C-size (or “HP_E1312” for B-size)
when the multimeter 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
remote interface reset.
• The security code <new code> can contain up to 12 alphanumeric characters.
The first character must be a letter. The remaining characters can be letters or
numbers or an underscore. You do not have to use all 12 characters but the first
character must be a letter.
• If you forget or lose the active security code, you can disable the security
feature by adding a jumper inside the multimeter (see Chapter 5 in the Service
Manual). You then enter a new code and remove the jumper.
Example Enter a New Calibration Security Code
CAL:SEC:STAT OFF, HP_E1412
Unsecure with the old code.
CAL:SEC:CODE
the_new_code
Enter a new calibration code
(a maximum of 12 characters).