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Table
3.1
-
Front Panel
Controls, Indicators,
and Connectors
(Cont'd)
Function/Description
NOTE:
Counter
automatically switches
to
the
external standard
when
the
signal
is
applied
GATE
LED*
Gate
is
open and
a
measurement
is
in
progress
Display Unit
LEDs:
S
LED*
V
LED*
FUNCTION
Keys (H)
NOTE:
These
LEDs
do not
light
when
a phase
angle,
ratio, totalize,
math
computation,
or a
constant
is
displayed
Units
in
Hertz
for
a frequency
measure-
ment
Units
in
Seconds
for
a
time
measurement
Units
in
Volts for voltage level
Select
in
succession the counter's
measurement
function.
The
corres-
ponding
FUNCTION LED
is
lit.
Function
selection
"wraps around"
at
both ends
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