Reading The Error Register - Agilent Technologies 3458A Repair Manual

measurements will be accurate.
If any of the tests failed, the ERR annunciator illuminates and the display
shows:
If the self-test failed, one or more error conditions have been detected. Refer
to the next section "Reading the Error Register".
Reading the Error
Whenever the display's ERR annunciator is illuminated, one or more errors
have been detected. A record of hardware errors is stored in the auxiliary
Register
error register. A record of programming and syntax errors is stored in the
error register. To read the error record(s).
Press:
Error
_
The lowest numbered error and a description of the error is displayed. For
example, a possible error message is:
Use the right arrow key to view the entire message. When the error message
has a 100-series numeric prefix (e.g., 105), it indicates a programming or
syntax error. A 200-series prefix (e.g., 209) indicates a hardware error.
Note
When you get a hardware error (200-series prefix), run the self-test again. If
you repeatedly get the error, the multimeter may need repair.
If the ERR annunciator is still illuminated, more errors have been recorded.
Repeat the above key sequence until all errors have been read and the ERR
annunciator is no longer illuminated. When you have read all the errors, the
error annunciator goes off. If you try to read another error, the display shows:
You do not have to run self-test to get an error. The multimeter detects errors
that occur while entering data, when changing functions or ranges, and so
on. The multimeter beeps whenever it detects an error.
Whenever you want to clear information (such as an error description) from
the display and return it to displaying measurements.
Press:
18 Chapter 2 Operating Information