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Operation
Model 3314A
THE 3314A FRONT PANEL
(1)
Status
This group
contains
the HP-IB
status
indicators
and the LCL
key to switch control of the 3314A
from remote to front panel
operation.
When
the LCL
key is preceded
by the BLUE
shift
key, the 3314A displays its HP-IB address for 1/2 second. The
НР-ІВ address
is set from
the front panel and
stored
in non-
volatile
memory.
The
factory
setting
is
7.
See
"How
to
Change the 3314A's
HP-IB Address"
located in the HP-IB sec-
tion of this manual.
(2)
Mode
The
3314A
has 7 basic operating
modes.
The
trigger signal,
either the 3314A's
internal trigger source or an external signal
you supply,
is essential to every operating
mode
except FREE
RUN
with sweep
off.
FREE RUM
Mode. Тһе
3314A
outputs
continuous
Sine,
Square,
Triangle
or ARB
functions.
Continuous
functions,
sweeps
and
ARB operations are allowed. See "How to Use the FREE RUN
Mode".
GATE Mode. The output is "gated"
ON and OFF by the Trigger
'level. Gated
functions,
sweeps
and ARB
operations are allow-
ed, See "How
to Use the GATE Mode".
N CYCLE Mode. The 3314A
outputs a burst of N complete cycles
of the
selected
function,
starting
when
a
Trigger
edge
is
received. The N parameter sets the number of cycles from 1 to
1999.
The
start/stop
phase
is set with the Phase
parameter
from -90?
to +90°.
See "How
to Use the
N CYCLE
Mode".
1/2 CYCLE Mods. The 3314A
outputs alternate
1/2 cycles of the
selected
funtion
when
a Trigger edge
is received.
The
start
phase of the first 1/2 cycle {and the stop phase of the second
1/2
cycle)
is set
with
the
Phase
parameter
from
-90°
to
+90°.
See "How
to Use the 1/2 CYCLE
Mode".
Fin
X Н
Mode
The
3314A
will
phase
lock
to
the
Trigger
(reference)
signal
and
output
a
frequency
"N"
times
the
reference
frequency.
The
N parameter
sets
"N"
from
1 to
1999.
The
frequency
limits
for
both
the
3314A
and
the
reference
are
from
5O0Hz
to 20MHz.
See
"How
to Use
the
PHASE
LOCK
Modes".
Fin
+
N
Mode
The
3314A
will
phase
lock
to
the
Trigger
(reference)
signal
and
output
a
frequency
equal
to
the
reference
frequency
divided
by "N".
The
N parameter
sets
"М
from
1
to
1999.
The
frequency
limits
for
both
the
3314A
and
the
reference
are
Кот
БОНх
to
20MHz.
See
"How
to Use the PHASE
LOCK
Modes".
ARB Mode. The ARB
mode
redefines the 3314A
as an Arbitrary
Waveform
Generator.
The
output
waveform
consists
of
a
series of voltage ramps
called vectors.
The operator
has con-
trol over the number
of vectors, the length of each
vector
in
time and the height of each vector. Both continuous ARB func-
tions
(FREE
RUN
Mode)
and
gated
ARB
(GATE
Mode)
are
allowed.
See " How
to Use the ARB
Mode".
©
Preset
The
Preset
key
initializes
the
3314A
to its basic
operating
state. This feature is especially useful to quickly recover from
complex
operating
states.
Store/Recall
Up to 5, non-ARB front panel control settings can be stored in
registers 1 through 5 to be recalled in the future. Register О is
reserved for the front panel setting at power off. іп addition, 6
ARB waveforms
can be recalled from ARB
registers O through
5.
ARB
waveforms
are
automatically
stored
as
they
are
created.
(5)
External Trigger
One EXT Trigger is a signal you apply to the Trigger УО port
that
satisifies
the
selectable
slope
and
threshold
conditions
(note that the Trigger 1/O port is an input when
EXT Trigger is
selected).
EXT Triggers are level sensitive for Gate; edge sen-
sitive for Burst,
Phase
Lock and Sweep
operations.
Another
EXT Trigger is the MAN
key. You
will have to press
this key twice when in Gate mode, to simulate a complete trig-
ger cycle (both levels), Once
is sufficient for all other opera-
tions. The minimum signal that will consistently trigger the 3314A
is
>
300тУр-р,
centered
on the selected
trigger threshold
voltage.
There
are
two
EXT
Triggers
available
from
the
HP-IB,
the
Group Execute Trigger (GET) and the " MN"
programming com-
mand.
(6)
Internal Trigger
The SW/TR IMTVL parameter
sets the period of the internal trig-
ger {note that the Trigger I/O port is an output when
INT trig-
ger is selected).
This output signal is useful as a sync signal
during sweeps,
gate and burst operations.
(7)
External
Modulation
Type
Sensitivity
Range
£1V ~ 100%
ЕЛМ
~
+1%
of range
1O%/Volt
0%
to >
100%
O96 to +1%
deviation
+ 1096 to -80%,
useable to -100%
Function
` allowed,
the actual AC
amplitude
and
DC
offset
will be dif-
ferent from the displayed
values
and the quality of the func-
tions
will be degraded
at higher frequencies
due to transmis-
sion line impedance
mismatches.
The
SYNC OUTPUT. This output
has
a characteristic
output
im-
pedance of 500 when terminated into < БОО. When terminated
into
2 500,
it will
deliver
TTL
compatible
levels
of O
to
>2.5V.
The
maximum
unloaded
voitage
is limited
to
—3V.
The edges of the sync signal are coincident with the peaks of
the sine and triangle functions
and coincident
with the edges
of the square function. This relationship is inverted by Function
Invert.
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