22 Keysight E8357D/67D & E8663D PSG User’s Guide
Signal Generator Overview
Front Panel Display
1. Active Entry Area
The current active function is shown in this area. For example, if frequency is
the active function, the current frequency setting will be displayed here. If the
current active function has an increment value associated with it, that value is
also displayed.
2. Frequency Area
The current frequency setting is shown in this portion of the display. Indicators
are also displayed in this area when the frequency offset or multiplier is used,
the frequency reference mode is turned on, or a source module is enabled.
3. Annunciators
The display annunciators show the status of some of the signal generator
functions and indicate any error conditions. An annunciator position may be
used by more than one function. This does not create a problem, because only
one function that shares an annunciator position can be active at a time.
Φ
M
This annunciator (Option UNT only) appears when
phase modulation is on. If frequency modulation is on,
the
FM
annunciator replaces
Φ
M
.
ALC OFF
This annunciator appears when the ALC circuit is
disabled. A second annunciator,
UNLEVEL
, appears in
the same position if the ALC is enabled and cannot
maintain the output level.
AM
This annunciator (Option UNT only) appears when
amplitude modulation is on.
ARMED
This annunciator appears when a sweep has been
initiated and the signal generator is waiting for the
sweep trigger event.
ATTEN HOLD
This annunciator (E8267D, E8257D, or E8663D with
Option 1E1 only) appears when the attenuator hold
function is on. When this function is on, the attenuator
is held at its current setting.
DIG BUS
This annunciator (Options 003/004 only) appears when
the digital bus is active, and the internal oven reference
oscillator is not cold (
OVEN COLD
appears in this same
location).
ENVLP
This annunciator appears if a burst condition exists,
such as when marker 2 is set to enable RF blanking in
the Dual ARB format.
