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SECTION 3
Oi7eruticm
CONT START (Continuous start: repeated sweep
sfart)
L3-F-U
This key starts repeated sweeps, which will be
generated continuously until halted with the
HOLD/RESM or SWEEP OFF keys.
SWEEP OFF (Sweep off)
SWEEP OFF cancels the sweep mode. The phase
will remain at the existing phase when this key is
pressed, and the MKR OUT, SWEEP SYNC
OUT, and X DRIVE OUT signals on the rear
panel are set to high level, high level, and OV, re-
spectively.
START STATE (Sweep start state: start phase out-
puf)
Pressing PHASE allows you to set the output
phase of the unit. The allowed phase range is
from -360" to 360". The amount of phase de-
pends on the signal from the Model 3930A main
synthesizer. The phase difference between the
master Model 3930A signal and Model 3933A
slave signal is:
This key resets the sweep and sets the output
phase to the start phase.
(Model 3933A phase setting) - (Model 3930A
start/stop phase setting)
When START STATE is pressed, the MKR OUT
and SWEEP SYNC OUT signals on the rear panel
will be set high. The X DRIVE OUT signal is set to
OV when the start phase is lower than the stop
phase; the X DRIVE OUT signal is set to 1OV
when the start phase is higher than the stop
phase. These signals can be used for scale adjust-
ments of XY recorders.
STOP STATE (Sweep stop state: stop state)
[SHIW
STOP STATE performs the opposite function of
the START STATE key in that it sets the output
phase to the stop phase.
When STOP STATE is pressed, the MKR OUT
and SWEEP SYNC OUT signals on the rear panel
are set high. The X DRIVE OUT signal is set to OV
when the start phase is higher than the stop
phase; it is set to 1OV when the start phase is
lower than the stop phase.
HOLD/RESM iHoZd/resumer kmpomry stop -und
resume)
This key alternately stops and resumes the
sweep.
0 5
Pressing HOLD/RESM while sweep is in pro-
gress will halt the sweep with the PHASE, MKR
OUT, SWEEP SYNC OUT, and X DRIVE OUT
signals present at that time maintained at their
present values. Pressing HOLD/RESM with the
sweep halted resumes the sweep, using the pre-
vious signal conditions.
ENTRY (Main parameter setting keys)
PHASE Phase)
[MODIFY] [SIZE]
If the Model 3930A's start/stop phase is any-
thing other than 0", the difference between the
settings for both units does not change, regard-
less of the Model 3930A's oscillation mode.
m
(AmpIifude)
[MODIFYI [SIZE]
Pressing AMPTD allows you to set the output
amplitude of the unit. The allowed amplitude
ranges from 0.30mV p-p/no load to 3O.OV p-p/
no load when the DC offset is OV and the output
range mode is AUTO. The range becomes
O.OOVp-p to 3O.OVp-p in the FXD mode. In other
cases, the upper and lower limits are restricted to
the range specified in Table 3-1. The values for
the amplitude setting are for no-load output con-
ditions. The unit can be set to display either the
no-load or 5Ofi amplitude value (see below).
In the AUTO mode, amplitude setting may be set
to rms or dBV value, as well as p-p.
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ing the appropriate ENTER units key when en-
tering the amplitude. Use mV or V for p-p values,
mVrms or Vrms for rms values, and dBm for dB
values.
3-7
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