Carrier
Source: Sine Wave
Carrier Frequency Range: 1 Hz to
40
MHz
Modulating Signal
Source: Any waveform except Noise, AM, FM,
or
Pulse.
Modulation Frequency Range: 1 Hz to
40
MHz
Note The ratio between carrier and modulation frequencies must be
S;
24,000.
A.2.11 Operating Modes
The Model 395 provides the following operation modes.
Continuous
The
selected waveform IS output continuously
at
the programmoo fre4utmcy.
Gated
The
selected waveform is output continuously
at
the programmed frequency while the
selected trigger signaI is true. When the trigger signaI transitions to faIse, the output will
complete the
CUITent
waveform cycle and then hold
at
the beginning
of
the waveform
until the trigger signal becomes true again.
Triggered
Upon transition
of
the selected trigger from faIse to true
the
number
of
waveform cycles
specified by the countis output at the specified frequency. Coontis programmable from
1
to
1,048,575.
Sweep
When
selected
the
output
frequency is
swept
according
to
programming
of
sweep
parameters.
Note When in non-continuous modes frequency resolution is limited ta 4 digits.
A.2.12 Triggering
The
Model
395 has four sources
of
triggers: external
TRIG
IN
BNC,
internaI trigger
generator,
front
panel
manual
trigger
key,
and
"remote"
GPIB
or
RS-232
trigger
commando The manual trigger key is active whether the trigger source is setto externaI
or
internaI. Remote trigger is always possible and carnIOt
be
selected
or
disabled.
External Trigger Source
Trigger Level
The
trigger level
at
the
TRIG
IN
BNC
is programmable:
Range:
-10
V
ta
+10 V
Resolution: 10
mV
Accuracy:
300
mV
Trigger Siope
Selectable as positive
or
negative
at
the
TRIG
IN
BNC.
Specifications A-7
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