Service manual

Appendix C 225
Error messages
Order of Alphabet
C. Error Messages
136 BRIDGE UNBALANCED
Because the connection of a DUT or the setting for it was incorrect, the internal circuit
(BRIDGE) temporarily could not perform measurements (UNBALANCED).
• The setting of the four-terminal pair extension (NONE, 4TP 1M, 4TP 2M, 7mm
42942A, PROBE 42941A) may not match with the fixture, cable, adapter, or probe
actually connected. Check and correct the setting.
• The setup (acquisition of calibration data) for the setting of the four-terminal pair
extension may have failed. If necessary, perform the setup again.
• Some measured DUTs may cause this error due to their characteristics. In this case, the
error may be avoided by changing the measurement condition (for example, lowering
the measurement signal level).
If this error often occurs in usual measurements, the instrument may fail. In this case,
Contact your local Agilent Technologies sales office or the company you purchased this
instrument from.
C
13 CALIBRATION ABORTED
One of the following occurred.
• In the middle of or after the completion of the setup for user calibration or fixture
compensation (measurement of required calibration data and calculation and storage of
error coefficients), the setting of calibration points (FIXED or USER) was changed.
The current setup and error coefficients previously stored are now invalid.
• When the setting of calibration points was USER, in the middle of or after the
completion of the setup for user calibration or fixture compensation (measurement of
required calibration data and calculation and storage of error coefficients), the sweep
condition (sweep range, sweep parameter, number of sweep points, sweep type) was
changed. The current setup and error coefficients previously stored are now invalid.
• In the middle of the setup for user calibration or four-terminal pair extension
(measurement of required calibration data and calculation and storage of error
coefficients), the setup was canceled (the cancel key, CALQUI command, or
ECALQUI command was executed). The setup is invalid. However, error coefficients
previously stored are available.
If necessary, perform the setup for user calibration, fixture compensation, or four-terminal
pair extension.
11 CALIBRATION REQUIRED
In user calibration or fixture compensation, though error coefficients based on the
measurement of the required calibration standards (OPEN, SHORT, or LOAD) had not
been acquired, an GPIB command (CALST
ON, COMCA ON, COMCB ON, or COMCC
ON) that turned on the user calibration function or fixture compensation function was sent.
Valid error coefficients were not detected. The command was invalid. For user calibration,
it is required to measure all the calibration standards (OPEN, SHORT, LOAD) and acquire
error coefficients based on the measurement. On the other hand, for fixture compensation,
it is required to measure a calibration standard (OPEN, SHORT, or LOAD) corresponding
to the fixture compensation function (OPEN compensation function, SHORT
compensation function, or LOAD compensation function) you want to turn on and obtain