Agilent Technologies ESA-E Series Programmer's Manual page 331

Error Messages
Status Message s
Status Messages
The following messages indicate a condition that may result i n
erroneous data being displayed . In each case the name of the
corresponding status bit is indicated in parenthesis . It will be noted if
only a status bit is used (no message) .
* (Invalid Data )
This indicator is displayed when data on the screen
may not match the screen annotation, for example
while analyzer settings are changing or when any trac e
is in view mode.
50 MHz Osc Unlevel (50 MHz Osc Unleveled )
The internal 50 MHz amplitude reference source has
become unleveled . This condition must be corrected
before a valid alignment can be performed .
(ADC Align Failure )
A status bit only, no message . The alignment routine
was unable to align the analog-to-digital converter
(ADC) .
Align Now All Needed (Align Needed )
The instrument requires an
Align Now, All.
Restore the
alignment by pressing
System, Alignments, Align Now,
All .
On all Agilent Technologies ESA spectrum analyzer
models except Agilent Technologies E4401B an d
Agilent Technologies E4411B you must connect the
AMPTD REF OUT
to the
INPUT
with the appropriate
cable to perform this alignment .
Align Now RF Needed (Align Now RF Needed )
The instrument requires an
Align Now, RF .
Restore the
alignment by pressing
System, Alignments, Align Now ,
RF (EXT Cable) .
On all Agilent Technologies ESA
spectrum analyzer models except Agilen t
Technologies E4401B and Agilent Technologies
E4411B, you must connect the
AMPTD REF OUT
to the
INPUT with the appropriate cable to perform thi s
alignment . For Agilent Technologies E4401B an d
Chapter 7 7-3