HP 83751A User Manual page 89

Front/Rear Panel
Display
The front panel LED annunciators (R, L, T, S, MKR A, Ml-+M2 SWP,
UNLOCKED FM, and FLTNESS ON) will be lit to show you that an
associated condition exists.
An explanation of each annunciator follows.
Display
Annunciators
SHIFT This annunciator appears when (ml is pressed, and
goes off when any other key is pressed (or when m is
pressed again).
This annunciator appears when (START) or [STOP) is pressed,
START
and goes off when Icw), ICF), or m is pressed.
CF This annunciator appears when (ZJ or m is pressed,
and turns off when Icw), (START), or ISTOP) is pressed.
This annunciator appears when Icw_l is pressed, and turns
c w
off when a, @Gi), (START), or ISTOP) is pressed.
MAN This annunciator indicates that manual sweep mode has
been selected.
This annunciator indicates that the instrument is performing
SWEEP
a sweep. This annunciator appears
instrument actually sweeps,
signal (even though it is in sweep mode). In continuous
sweep mode, the annunciator will blink with slow sweeps,
but remain on with fast sweeps.
EXT REF This annunciator indicates that an external frequency
reference is in use.
ALT This annunciator indicates that the alternate sweep mode is
active.
STOP This annunciator appears when (VZ??i] or ~ is pressed
and turns off when Icw), a, or ISPAN) is pressed.
This annunciator appears when LCF) or m is pressed and
SPAN
turns off when Icw], (START), or m is pressed.
This annunciator indicates that the displayed frequency is a
multiple of the actual RF output frequency.
7-20
only
while the
not
while it waits for a trigger