Calibration Procedures 2
Keysight DAQ970A/DAQ973A Service Guide 39
Calibration Security
This feature allows you to enter a security code to prevent accidental or
unauthorized adjustments of the instrument. When you first receive your
instrument, it is secured. Before you can adjust the instrument, you must
unsecure it by entering the correct security code.
The procedures to enter the security code is described on page 40.
– The security code is set to “DAQ970A” 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, after a Factory Reset (*RST command), or
after an Instrument Preset (SYSTem:PRESet command).
– The same security code must be used for front panel and remote operation. If
you secure the instrument from the front panel, use that same code to
unsecure it from the remote interface.
– The security code may contain up to 12 alphanumeric characters. The first
character must be a letter, but the remaining characters can be letters,
numbers, or an underscore ( _ ). You do not have to use all 12 characters but
the first character must always be a letter.
NOTE
If you forget your security code, you can disable the security feature by adding a
jumper inside the instrument as described on page 42.