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Model 5304A
Operation
Figure 9D-3-2. Front-Panel Controls and Connectors (Continued)
4.
AC-DC.
Two-position
switch
allows
selection of ac-coupling or direct-coupling
to input amplifiers.
5.
SLOPE +, -.
Selects the triggering on
positive or negative slope of the input
signals.
6.
LEVEL. Adjusts the input trigger levels.
Preset to trigger at 0 volts.
7.
FUNCTION.
Twelve-position
switch
enables 4 modes of operations
to be
selected. The modes are:
a. T.I. A to B: Enables time interval
measurements to be made from
500
nsec
to
10,000
seconds.
Resolution is adjustable from .1 /JS
to 10 ms in six decade steps.
b. PER AVG A:
Enables multiple
period averages to be made from
8.
Channel A with frequencies of 10
Hz to 1 MHz.
Periods averaged
are
automatically
selected
from
1 to 10\
c. FREQ
A:
Enables
frequency
measurements from 0 to 10 MHz
when dc coupled and 100 Hz to
10 MHz when ac coupled.
1) AUTO:
Gate
time
is
auto-
matically selected to fill the dis-
play for maximum resolution of
the signal being measured, without
overflow, up to a maximum, of
1 second.
2) .IS, IS, 10S:
Counter gate time
is manually selected for .1 seconu,
1 second or 10 seconds.
d. OPEN/CLOSE A (Totalize):
En-
ables input signals to Channel A to
be totalized. Totalizing is initiated
by pressing OPEN/CLOSE A switch
and terminated by pressing the
switch a second time.
DELAY. Adjustment inserts a time interval
delay of 100 /jsec to 100 msec between
Start (Channel A) signal and Stop (Chan-
nel B) signal; when disabled, there is a
residual delay of about
4
200 nsec.
9D-3-3
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