Appendix C: System Messages
C–2
2715 User Manual
AVERAGE NOISE TOO LOW
The average noise level in the Carrier-to-Noise or Noise Normalization
measurement is below the bottom of the screen and cannot be digitized. To
correct the problem, reduce the reference level to bring the noise level onto
the screen.
AVERAGE IN PROCESS
An ensemble average (not CONTINUOUS) is in process. Used to report
event over GPIB.
CALIBRATOR DOESN’T MATCH READOUT
The calibrator is enabled and an external attenuation or external frequency
offset is enabled.
CAN’T COUNT WITH CORRECTIONS OFF
Turn Frequency Corrections ON. The location of this selection is
[UTIL] [4] [3].
CANNOT CALC. VERT. SENSITIVITY
Perform amplitude normalization. Contact your local Tektronix service
center or representative if message persists.
CANNOT COUNT (VCO IF)
Perform frequency normalization. Either the VCO counter input or the IF
counter input failure can cause this error to occur. Contact your local
Tektronix service center or representative if message persists.
CANNOT COUNT BEAT FREQUENCY
Perform frequency normalization. Contact your local Tektronix service
center or representative if message persists.
CANNOT DELETE FILE WHILE IN USE
Occurs when attempting to delete a file that is in use.
CANNOT NORMALIZE PLL VCO
Perform frequency normalization. Contact your local Tektronix service
center or representative if message persists.
CANNOT OVERWRITE SAVED DISPLAY
Old data must be deleted or transferred to STORED SETTINGS before new
data can be saved.
CANNOT OVERWRITE STORED REF
An attempt was made to overwrite a stored reference.
CANNOT OVERWRITE STORED SETTING
An instrument setting is already stored in this register. Old setting must be
deleted first.
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