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Model 5308A
General information
Table 9H-1-1.
Specifications
INPUT CHANNELS
A AND B
RANGE:
DC Coupled;
0 to 75 MHz
AC Coupled;
20 Hz to 75 MHz
SENSITIVITY:
(Min) 25 mV
rms
sine wave
to 10
MHz.
50 mV rms sine wave to 75 MHz.
150
mV p-p pulse at minimum pulse width of 10
ns. Input must be less than 1V rms from 50 to
75 MHz with Attenuator switch in X1 position.
Sensitivity
can
be decreased
by
10 using
Attenuator switch.
IMPEDANCE:
1 MO shunted by less than 48 pF.
OVERLOAD
PROTECTION: +
DC Range:
Xl:
DC to 400 kHz
125V rms
400 kHz to 5 MHz
Vrms = (5x107)+(Hz)
5 MHz to 75 MHz
10V rms
X10:
DC to 4 MHz
250V rms
4 MHz to 75 MHz
Vrms = (1x10°)+(Hz)
| AC Ranges:
DC to 10 Hz
200V peak in addition to
above ratings.
TRIGGER LEVEL:
Set position centers triggering at
O volts,
or continuously
variable
over
the
range of 22.0 V with Attenuator in X1 position
or +20V with Attenuator in X10 position. Trig-
ger level available on rear panel BNC
con-
nectors for DVM monitoring.
SLOPE:
Independent
selection
of triggering
on
positive or negative slope.
CHANNEL INPUTS:
Separate or Common B
GATE OUTPUT:
Rear panel BNC.
TTL low level
while gate is open may be used to intensity
modulate an HP oscilloscope.
TIME BASE/SCALING
OUTPUT:
Available at rear
panel BNC.
FREQUENCY
RANGE:
0 to 75 MHz, Channel A or Channel B.
GATE TIMES:
8 manually selectable times from
1
us to 10 seconds.
AUTO position selects gate
time
for maximum
resolution
within
a 1.1
second measurement time.
ACCURACY:
+1 count + time base accuracy.
DISPLAY:
Hz, kHz, and MHz with positioned deci-
mal point.
FREQUENCY
RATIO
DISPLAY:
Fa/Fb, measured over N periods of Fb.
N=1
to 10%, selectable in decade
steps with
automatic decimal position and annunciators.
AUTO
position
selects N automatically
for
maximum
resolution
within
a
1.1
second
measurement time.
RANGE:
Channel A; 0 to 75 MHz.
Channel B; 0 to
5 MHz.
ACCURACY:
+1 count of Fa + trigger error of Fb*.
`
PERIOD
RANGE:
0 Hz to 5 MHz, Channel B-
RESOLUTION:
100 ns to 10 s in decade steps.
ACCURACY:
+1 count + time base accuracy + trig-
ger error*.
DISPLAY:
us, ors with positioned decimal point.
PERIOD AVERAGE
RANGE:
0 to 5 MHz; (100 ns to 10 s), Channel B.
PERIODS AVERAGED:
1 to 10% manually selectable
in decade
steps.
AUTO
position automati-
cally selects number of periods for maximum
resolution within a 1.1 second measurement
time.
FREQUENCY
COUNTED:
10 MHz.
ACCURACY:
+1 count + time base accuracy + trig-
ger error*,
DISPLAY:
mus (ns), us, with positioned decimal
points. (In the 108 position of the TIME BASE
switch,
the
display
will
be
ps
with
no
annunciator shown.)
TIME INTERVAL
RANGE:
200 ns to 10° s.
25 ms minimum
pulse
width.
Separate or Common B.
RESOLUTION:
100 ns to 10 s in decade steps.
ACCURACY:
+1 count-+ time base accuracy + trig-
ger error',
DISPLAY: us, s, or ks with positioned decimal point.
TIME INTERVAL AVERAGE
RANGE:
1 ns to 10 s.
200 ns dead time between
intervals. Channels A and B separate or Com-
mon B.
INTERVALS
AVERAGED:
1 to 108 selectable in de-
cade steps.
AUTO
position selects number
of intervals to give maximum resolution with-
in a measurement time of 1.1 second.
DISPLAY:
mus (ns), us, or s with positioned deci-
mal point.
(In the 108 position of the TIME
BASE
switch, the display will be in ps with
no annunciator shown.)
ACCURACY:
+ time base accuracy £5 ns
+ [Trigger Error* + 100 ns]
Y Intervals Averaged
TOTALIZE
Totalizes Channel A during pulses on Channel B.
Totalizes Channel A between pulses on Channel B.
RANGE:
75 MHz
on Channel
A in position 1 of
TIME
BASE
switch,
5 MHz
in
other
positions of TIME BASE switch.
ACCURACY: +1 count + trigger error on Channel B*.
DISPLAY:
Displays count.
Can scale display with
annunciator by use of TIME BASE switch to
increase count capacity.
GENERAL
NOTE:
5308A is compatible with 8 digit 5300B
mainframe only.
CHECK:
Inserts internal
10 MHz
reference fre-
quency into counting decades.
Displays 10
counts
for TIME
BASE
switch positions 10
through 108 with proper decimal position and
annunciator.
OPERATING
TEMPERATURE:
0° to 50°C.
POWER
REQUIREMENTS:
Including 5300B main-
frame, nominally 15 watts.
WEIGHT:
Net, 0.9 kg (2 Ib). Shipping, 1.5 kg (3% Ib),
DIMENSIONS:
With mainframe
89 mm
H 3%") x
760 mm W (6547) x 248 mm L (9%").
+SEE WARNING ON PAGE 9H-3-11.
*For any waveshape, trigger error (us) is less than +
0.005
For period average, this is less than +0.3% of one
period + periods averaged for signals with 40 dB or
better signal-to-noise ratio.
9H-1-3
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