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208 Chapter 9
Error Messages
General Information About Error Messages
Text Only Error Messages
Operation errors generally occur when you try to do something the Test
Set was not designed to do. Most messages tell you what to do to correct
the problem, (turn something off, reduce a field’s value, press a certain
key,…and so forth).
Some common messages are listed here:
• All self tests passed.
• The Test Set did not detect any hardware or firmware failures
during its initial self-diagnostics.
This message should always be displayed immediately after
instrument turn on.
• 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.
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