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Model 5315A/8
Operation
LEVEL/SENS.
When
in
TR IGGER LE
VEL,
controls
the vol
ta
ge
at
which corresponding input
will trigger,
variable
over
±2.0 volt X AnN setting. When
in
SENSITIVITY, va
ri
es
the
sensitivity from MAX
("
'0
mV)
up
to
500
mV.
TRIGGER LEVEL/SENSITIVITY. Sets
the
function
of
corresponding
LEVEL/
SENS control
to
either
Trigger
Level
or
Sensitivity mode. In
TRIGGER LEVEl mode,
sensitivity
is preset
to
maximum. In
SENSITIVITY
mode, trigger
level
is
preset to
0
volts.
TRIGGER LIGHT. 3-state trigger
lights; blinks
when channel
is
triggering;
OFF
when input
signal is
below
trigger
level
setting;
ON
when
input signa
l is
above
trigger level
selli
ng.
GATE.
Gate light, ind icates
the
counter's
main gate
is
open
(when ON
)
and a measure-
ment
is in
progress
.
Hz.
Hz
(Hertz)
annunciator, indicates
d isp layed
data
is
in
frequency
domain, in units
of
hertz.
S. s
(seconds)
annunciator,
indicates
displayed data is
in
time
domain,
in
units of seconds.
EXPONENT. Displays
the
value of the
exponent of
the
measurement. Measurements are
displayed in
engineering
notation,
with exponents of
blank
(0), ±3, ±6,
±9.
EXPONENT SIGN. Ind icates the
polarity
of
the
displayed
exponent
;
ON
(N) if negative,
OFF
if
positive
.
DISPLAY.
Eight-digit amber LED
display.
OVFL
OVFL
(Overflow)
annunciator, indicates that
one of
more of
the
most
significant
digits are not displayed
.
ERROR.
lights and remains
lit
when
an
error is
detected during power-up.
DISCHG.
Indicates
instrument
under
battery
operat
ion
;
flashes
w
hen charge level
is
criticall
y
low
and
counter
is
disabled,
CHG.
Indicates
the
operating
status
of
the charging
circuits on Option 002.
Figure
3-8.
Fron!
Panel
Features
(Continued)
3-13
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