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o
o
.,
o
•
o
Model
5315A/8
Operation
STBY/ON.
Suppl
ies
power
to entire
machine
in
t
he
ON positon.
Supplies
power
only
to
the Battery-Pack
(Option
002)
i
n
th
e S
TB
Y
(Standby)
position.
RESET.
Clears
and
updates display in
continuous
measurement
modes,
resets
counter to
ze
ro
in
totalize modes
.
FREQ
A.
Selects Frequency mode of
operation (w
ith Shi
ft key out
),
tor signals
on
Input
A.
PER A. Selects
Period mode
of operation (w ith Shift
key
in
),
tor
signa
l
on
Input
A.
T.I.
A-B. Selects
Time
Interval
mode
of operation (with Shift key
out
)
measurin
g time
d ifferences
from Start signal on INPUT
A to Stop signal on
INPUT
B
{when
in
SEPI.
T.I. AVG
A-
B. Selech Time
Interval
Average
mode
of operation (w ith Sh ift
key
in),
measuring time differences
from
Start
signal on
INPUT
A
to
Stop signal
on
IN PUT
B
{when
in
SEPI
.
T.I. DELAY.
Selects Time Interval mode of
operation (w ith Sh ift key out
), measuring time
differences
from Start
signal
on IN
PUT
A
to
Stop signal
on
INPUTB (when
in
SEP),
with the
triggeri
ng
of the Stop signal
DELAYED
(heldotf)
for a
period
of
time determined by
GATE
TIME DELAY control.
CHECK.
Appli
es
10
M
Hz from
reference oscillator to
MRC,
to verify
operation
of MRC,
display
and
GATE
TIM
E
control, Microcomputer,
etc.
RATIO A/B. Selects
Ratio mode of operation
(with Shift key
out),
measuring the
ra
tio
of
the signal
frequency
at INPUT A to the signal frequency
at
INPUT
B.
A
BY
B. Selects a "gated
"
totalize mode of operation
(with Shift key
in),
in
which
the
signal
frequency
of
INPUT A
is
totalized for a gate
duration determined by
the signal
on
INPUT B.
o
FREQ
C.
Enables
the
Frequency
C INPUT (Option
(03)
module (with
the
Sh
ift
key out ).
GATE TIME. Continuously
measures
and
displays the
gate time determined
by
the GATE
TIME
control.
NOTE
The
trigger
lights are
disabled and
exti
ngu ished
w
hen
either FREQ C
or
GATE
TIME
is selected.
Figure
3-8.
Front
Panel Features
3-11
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