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Chapter 11 305
Error Messages
General Information About Error Messages
• Input value out of range.
A number was entered that was too large or small for the selected
field, for example, trying to set AFG1 Freq to 125 kHz.
• Invalid keystroke.
You used a key that has no function relating to the selected field,
for example, pressing the
On/Off
key while the Filter 1 field is
selected.
• Option not installed.
You selected a function that requires optional hardware that is
not present.
• Turn off either AM or FM settings.
You tried to create simultaneous AM and FM (using any
combination of AFGen1, AFGen2, and the Mod In To field). The
Test Set does not provide simultaneous AM and FM.
• Squelch interrupt overflow. Reset using
Meas Reset
(press and
release the
Shift
key, then the
Hold
key).
The Test Set temporarily interrupts audio measurements when
squelch is first broken to prevent internal switching transients
from influencing measurements (except when using the SCOPE,
SPEC ANL, SERVICE screens). If squelch is repetitively broken
in a period of a few seconds, the duration of measurement
interruption becomes too great, and the Test Set stops
interrupting the signal. Following measurements may be
influenced by transient signals.
Meas Reset
clears the data buffer used to generate interrupts,
resetting the normal squelch operation to eliminate transients.
This condition may occur when monitoring low-level off-the-air
signals.
• Cal file checksum incorrect - initializing file.
This error usually occurs after changing the Test Set’s firmware
ROM’s. It is not a problem in that instance, but should not
re-appear during subsequent operation of the Test Set.
• One or more self tests failed. Error code: XXXX
An instrument failure was detected when the Test Set was turned
on. (For example, having a stuck front-panel key during turn on.)
The numbered error message corresponds to a binary-weighted
group of errors listed in the *TST Common Command description
in the Programmer’s Guide.