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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