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Model 5326/27A
Operation
1.
SAMPLE RATE control.
Applies primary
power.
Works in conjunction with FAST/
NORM/HOLT) switch to control interval be¬
tween measurements.
a.
FAST - Varies display time from <100
H
s to >20 ms.
STORAGE switch (rear
panel) must be ON to use this mode.
b.
NORM - Varies display time from <
20 ms to >5 seconds.
c.
HOLD - Holds display indefinitely.
2.
RESET Switch.
Resets display and internal
count to zero and starts new measurement.
3.
INPUT C (5327A). 50-ohm input for 0 to 550
MHz frequency measurements.
Has dc cou¬
pling (with INPUT C switch in + 10 position)
and sensitivity of 100 mV rms sine wave (300
mV peak-to-peak pulse).
Maximum input is
±5 volts referenced to ground (DO NOT EX¬
CEED). Trigger level is zero volts. The input
is ac coupled with the INPUT C switch in
DIRECT position. The frequency range is 1
kHz to 50 MHz with a sensitivity of 5 mV.
INPUT C (5326A).
50-ohm input for 0 to 50
MHz frequency measurements.
Has dc cou¬
pling and sensitivity of 5 mV rms sine wave.
Trigger level is zero volts. Maximum input is
±5 volts referenced to ground
(DO
NOT
EXCEED).
4.
FUNCTION selector.
Selects mode of oper¬
ation.
Blue lettering matches corresponding
blue lettering on TIME BASE/MULTIPLIER
switch.
a. STOP, START - Used
for totalize
mode to manually open and close counter's
main gate and to turn scaled output on and
off. Frequency input range is 0 to 10 MHz.
b.
PERIOD AVG A - Sets counter to
measure
period
of
signal
applied
to
CHANNEL A input.
Use
MULTIPLIER
switch to select number of periods to be
averaged.
Input frequency range is 0 to
10 MHz.
c.
T.l. AVG A to B - Sets counter to
measure
average
time
interval,
A
to
B.
Channel A starts interval and Channel B
stops
the
interval.
Use
MULTIPLIER
selector to set number of time intervals to be
averaged. Time interval input range is 150 ps
to 10 sec; there must be a 150 ns deadtime
between intervals.
d.
T.L A to B - Sets counter to measure
time interval A to B. Channel A starts meas¬
urement and Channel B stops the measure¬
ment.
T.l. input range is 0.1 ps to 109 sec.
The internal time base frequency is divided
by the setting of the MULTIPLIER switch and
totalized for subsequent display.
The more
cycles of the oscillator frequency that are
counted during A to B time, the better the
resolution. There must be 150 ns deadtime
between Channel B and Channel A trigger
points.
e.
PERIOD A - Sets counter to measure
a single period of the
signal
applied to
CHANNEL A input.
Use MUTLIPLIER
switch to set counted internal oscillator fre¬
quency and therefore the desire resolution.
Frequency input range is 0 to 10 MHz.
f. FREQ A - Sets counter to measure
frequency applied to CHANNEL A input.
Use TIME BASE switch to set gate time and
resolution.
Frequency input range is 0 to 50
MHz.
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