Model
3580A
Section I
Table 1-2. General Information (Cont'd).
and
the
refresh
trace
on
the
CRT.
The manual sweep fully
duplicates
the
span
of
the
electronic sweep.
Log
Zero: Used
to
set
the
correct
starting
point
for
log
sweep.
Log:
Front
panel frequency
and
sweep
controls
are disabled.
The
instrument
sweeps logarithmically
from
2D
Hz
to
43
kHz.
The
log
sweep
is repetitive; sweep
time
is
approximately
5 seconds.
Typical Sweep Linearity: ± 1 %
Frequency
Span
Settings: D Hz*, 5 Hz/div
to
5 kHz/div
*When
the
D Hz span
setting
is
selected,
the
frequency sweep
is
disabled
and
the
instrument
remains
at
the
frequency
indicated on
the
frequency
dial.
The
display
continues
to
sweep
at
the
panel-selected rate. This provides a graphical
display of
amplitude
vs.
time.
Overall
Span:
5D
Hz
to
5D
kHz
(1D
span settings)
Sweep
Time
Settings:
D.D1
sec/div
to
2DD
sec/div (14 settings)
Overall
Sweep
Time:
D.1
sec.
to
2,DDD
sec.
Sweep
Error Light: A
front
panel LED
indicator
lights
when
sweep rate
is
too
fast.
Out
of
Range Indication: The
CRT
display
is
cleared in areas
where
the
sweep goes below D Hz
or
above
5D
kHz.
Adaptive Sweep:
The
front
panel Adaptive Sweep control is
used
to
set a baseline
threshold
on
the
CRT. In areas where
responses are
below
the
baseline
threshold,
the
instrument
sweeps
2D
to
25
times
faster
than
the
panel-selected
rate.
When
the
sweep reaches a response
that
rises above
the
baseline
threshold,
it backs
up
slightly, pauses
to
al
low
the
IF
Filter
to
settle
and
then
sweeps slowly over
the
response
at
the
panel-selected
rate.
By sweeping rapidly
through
unused
portions
of
the
spectrum,
the
Adaptive Sweep greatly reduces
the
measurement
time
for
certain applications.
External Triggering: A rear panel External Trigger
Input
connector
is
provided
to
allow
the
frequency sweep
to
be
remotely
triggered
by
a
contact
closure or
TTL
logic levels.
External triggering
can
be
used in
the
Repetitive, Single
or
Log
sweep
mode.
OUTPUTS:
Recorder
Outputs:
X-Axis: Supplies
de
voltage corresponding
to
position of
frequency sweep
on
CRT.
Output
Voltage: D V (left-hand edge)
to
+ 5 V
(right-hand edge)
Output
Resistance: 1 kilohm
Y-Axis: Supplies
de
voltage
proportional
to
amplitude.
Output
Voltage: D V
(bottom
of
screen)
to+
5 V
(top
of
screen).
Output
Resistance: 1 kilohm
Pen Lift: Provides a
contact
closure during single sweeps.
If
Adaptive
Sweep
is used, closure
is
present
only
when
instrument
is sweeping slowly over a response.
Tracking Oscillator
Output:
Frequency: 5
Hz
to
5D
kHz; tracks
tuned
or
swept
frequency
of
instrument.
Output
Level: D V
to>
1 V
rms
into
6DD
.n
(adjustable)
Output
Impedance: 60D
ohms
Tracking Oscillator
Input:
The
tracking oscillator
output
signal can
be
offset
or
frequency
modulated
by
applying
an
external reference signal (about 1
DD
kHz)
to
the
rear
panel Tracking Oscillator
Input
connector.
L.O.
Output:
Frequency:
Varies
from
1.D
MHz
to
1.5
MHz as 358DA
frequency
is
tuned
from
D Hz
to
5D
kHz.
Output
Level: Varies
from
about
3DD
mV p-p
to
6DD
mV
p-p depending
on
frequency.
Output
Impedance: 1 kilohm
GENERAL:
Operating
Temperature
Range:
Standard
358DA:
D°C
to+
55°C
Option
DD1:
D°C
to+
4D°C
Storage
Temperature
Range:
Standard 358DA: - 4D°C
to+
75°C
Option
DD1:
- 4D°C
to+
5D°C
Charge
Temperature
Range (Option
001):
D°C
to+
4D°C
Power Requirements: 1
DD
V, 12D V, 22D V
or
24D
V + 5%
- 1
D%,
48
Hz
to
66
Hz,
35
watts
maximum
Battery
Characteristics
(Option
001):
Operating Time: 5
hours
from
full charge
Charge Time:
14
hours
to
recharge fully discharged
battery
pack
Battery Life:
more
than
1
DO
charge/discharge cycles
Protection:
The batteries are
protected
from
excessive
discharge
by
an
automatic
cut
out.
Dimensions:
II-
~--~---16'4
1412.8)
------·~-i
c..,..-------......m
~~
.........
u--r----S-ID-E
------.u--.-'"'"'~
t'
t=11'41285.8)~
0 0
.:::o
0
REAR
0
LJ
Weight:
LJ
Standard
358DA: Net
27
lbs.
Option
DD1:
Net
35
lbs.
DIMENSIONS
SHOWN
IN
INCHES
AND
(MILLIMETERS)
1-3
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