Operation
CD
THE
3314A
FRONT PANEL
Status
0 Store/Recall
Model 3314A
1-
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
kev, the
3314A
displays its HP-IB address
for
1/2
second. The
HP-IB 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.
Mode
The
3314A
has 7
baSIC
operating
modes.
The
trigger
signal,
either
the
3314A's
Internal trigger source
or
an
evternal
signal
you supply, IS essential to
every
operating
mode
except
FREE
RUN
with
sweep
off.
FREE
RUN
Mode.
The
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".
Up to 5, non-ARB
front
panel
control
settings
can be stored In
registers 1
through
5 to be recalled In
the
future.
Register 0 IS
reserved for
the
front
panel
setting
at
power
off.
In addition, 6
ARB
waveforms
can be recalled
from
ARB registers 0
through
5. ARB
waveforms
are
automatically
stored as
they
are
created.
External Trigger
One EXT Trigger IS a Signal you apply to
the
Trigger I/O
port
that
satlsifles
the
selectable slope and
threshold
COnditions
(note
that
the Trigger I/O
port
is an
Input
when
EXT Trigger IS
selected). EXT Triggers are level sensitive
for
Gate: edge sen-
srtive
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
suttlcient
for
all
other
opera-
nons
The
minimum
Signal
that
will
consistently
trigger the
3314A
15 2
300mVp-p,
centered on
the
selected
trigger
thresnotd
voltage
There are
two
EXT Triggers available
from
the HP-IB,
the
Group Execute Trigger (GET) and
me
"MN'
programming
com-
mand
Internal Trigger
The
SW/TR
INTVL
parameter
sets
the
period of
the
Internal trig-
ger Inote
that
the Trigger I/O
port
IS an
output
when
INT trig-
ger
IS
selected). This
output
Signal 15
useful
as a sync Signal
during sweeps, gate and
burst
operations
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
0
to +
90
0
•
See"
How
to Use
the
N CYCLE
Mode"
1/2
CYCLE
Mode.
The
3314A
outputs
alternate
1/2
cycles
of the
selected
funtion
when
a Trigger edge rs 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
a to
+
90°
See"
How
to Use
the
1/2
CYCLE
Mode".
CD
External
Modulation
Fin
X N
Mode.
The
3314A
will
phase
lock
to
the
TrI~ger
(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
50Hz
to
20MHz.
See
"How
to Use the
PHASE LOCK
Modes"
Type
AM
FM
VCO
Sensiti~it,
:!: 1V -
100%
± 1V - ± 1% of
range
10'1olvolt
Range
0%
to
> 100'10
0%
to
± 1% devranon
+10%
to
-80%,
useable
to
-100%
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
"N"
from
1 to 1
999
The
frequency
limits
for
both
the
3314A
and
the
reference are
from
50Hz
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
Model
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 15 especiallv useful to
quicklv
recover
from
complex
operating
states
3-4
Function
The
MAIN
OUTPUT.
This
output
has a
characteristic
output
Im-
pedance of
500.
Although
operation Into
other
than
500
IS
allowed,
the
actual AC ampntune 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 :s
500.
When
terminated
Into >
500,
It Will dehver TTL
compatible
levels of 0 to
>2. 5V. The max irnurn unloaded voltage IS limited to - 3V.
The edges of the sync Signal are
comcicent
With
the
peaks of
the Sine and triangle
functions
and
coincldent
With
the
edges
of the square
function
Thrs relationship IS Inverted by
Function
Invert
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