Anritsu MS2024A/MS2026A User Manual page 279

Appendix B — Error Messages B-3 Operation Error Messages
Lock failed during initialization
One or more of the Phase Lock Loops failed to achieve lock status during startup. Insure that
the battery level is adequate for operation or that temperature is within acceptable limits.
Reset to factory defaults with either Factory Defaults, ESC+ON, or MASTER RESET,
System+ON. Caution: Use of MASTER RESET, System+ON, will erase all user saved setups
and measurement traces and return the unit to a fully Factory Default condition. If the error
persists, then contact your Anritsu Service Center.
Lock failure
One or more of the Phase Lock Loops cannot keep the frequency controlled accurately. Insure
that the battery level is adequate for operation and that the temperature is within acceptable
limits. Reset to factory defaults with either Factory Defaults, ESC+ON, or MASTER RESET,
System+ON. Caution: Use of MASTER RESET, System+ON, will erase all user saved setups
and measurement traces and return the unit to a fully Factory Default condition. If the error
persists, then contact your Anritsu Service Center.
Locking to External Ref failed; Lock attempt Failed
Switching from an internal frequency reference to the external reference has failed. Verify
that the correct external reference frequency value has been selected from the list of valid
external reference frequencies. Verify that the level of the external reference frequency is at
least 1vp-p.
Locking to Internal Ref failed
Switching from an external frequency reference to the internal reference has failed. Some
additional warm up time may be needed if the unit has been on external reference for a long
time or the unit is not warmed up enough.
Lock Test FAILED
One or more Phase Lock Loops Failed to properly achieve Lock Status. Insure that the
battery level is adequate for operation or that temperature is within acceptable limits. Reset
to factory defaults with Factory Defaults, ESC+ON.
Marker must be ON to Use the feature
Attempted to use a marker mode or feature for a marker that is not enabled. Turn on the
appropriate marker to use this function or switch to a marker that is already enabled.
Measurement not valid in Zero Span
Attempt was made to make an automated measurement that requires more than ZERO
SPAN to accomplish. An example would be Occupied Bandwidth measurement.
Minimum permitted Sweep time is 50µs
An attempt was made to set the minimum Sweep time to less than 50us.
MS20xxA VNA Master UG 10580-00166 Rev. C B-7