4-9
Front and Rear Panel
Display Annotation
ARMED This annunciator is turned on when a sweep has been initiated
and the signal generator is waiting for the sweep trigger event.
ATTEN HOLD This annunciator is turned on when the attenuator hold function
is turned on. When this function is on, the attenuator is frozen
at its current setting.
ERR This annunciator is turned on when an error message is placed
in the error queue. This annunciator will not turn off until you
clear the error queue of all error messages. You can view and
delete error messages using the
Utility menu.
EXT1 LO/HI This annunciator toggles between EXT1 LO and EXT1 HI.
This annunciator is turned on if the AC-coupled signal to the
EXT 1 input is less than 0.97 Vpk or greater than 1.03 Vpk.
EXT2 LO/HI This annunciator toggles between EXT2 LO and EXT2 HI.
This annunciator is turned on if the AC-coupled signal to the
EXT 2 input is less than 0.97 Vpk or greater than 1.03 Vpk.
EXT REF This annunciator is turned on when an external 1, 2, 5, or
10 MHz frequency reference is in use.
FM This annunciator is turned on when frequency modulation is
turned on. A second annunciator,
ΦM, will appear in the same
position if phase modulation is turned on. Frequency
modulation and phase modulation cannot be turned on at the
same time so the two annunciators will never conflict.
L The L annunciator is turned on when the signal generator is in
the listen mode and receiving information or commands over
the HP-IB.
MOD OFF This annunciator toggles between MOD OFF and MOD ON and is
always visible in the display. This annunciator indicates
whether the modulations which you have enabled are
modulating the RF carrier.
OVEN COLD This annunciator is turned on when the temperature of the
internal ovenized reference oscillator (Option 1E5) has dropped
below an acceptable level. When this annunciator is turned on,
frequency accuracy will be degraded. This condition should
only occur if the signal generator is disconnected from line
power. The annunciator is timed and automatically turns off
after a specified period of time.
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