Fluke 8024B Instruction Manual page 39

8024B 8024B
5.
Depress
the
AC/ DC
switch
to activate
the audible
tone.
6.
Momentarily
short the
test
leads together
and observe
that the
tone sounds
coincident with
theTdown
arrow.
TheAup
arrow
may
or
may
not be displayed,
depending on
the
duration of the short.
4-37.
Level Detector Test
4-38.
Use the following
procedure
to verify the
proper operation of the
level
detector
function:
1.
Select the
ft
functions,
200
kft range.
2.
Program
the pulse generator for
a single pulse that
is
greater than 50 usee wide
and 0 to
3V ±0.5%
in
amplitude.
3.
Connect
the pulse
generator
to the
UUT:
+
to the
V/
ft/
S terminal and
- to
the
COMMON
terminal.
4.
Cause the pulse generator to output single pulses
and
verify that the
Aup
arrow
appears
momentarily
in
the
LCD
of
the
UUT
for
each
single pulse.
5.
On
the
UUT
depress the
AC/
DC
switch to enable the audible tone.
The
audible tone should be
on continuously.
6.
Cause the pulse generator to
output 500
ms
pulses
and verify that the
A
up
arrow
appears in the
LCD
and the audible tone stops for each
pulse.
7.
Release the
AC/
DC
switch
to
disable the
audible
tone.
The down arrow
should appear
in
the
UUT
display.
4-39.
BTTest
4-40.
Complete the following procedure to verify that the
BT
indicator appears
on
the
LCD
at the correct battery level,
and that the accuracy of the
UTT
remains unaffected
at
this
battery voltage
level:
1.
Connect
the
equipment
as
shown
in
Figure
4-5.
2.
Set the
UUT
switches
to the following
positions:
200
mV
in
AC/
DC DC
(out)
3.
Set the
DMM
controls
to
the following positions:
in
DC
Figure
4-5.
BTTest
4.
Program
the
DMM
Calibrator
for a
UUT
input of 190.0
mV
dc.
5.
Adjust the variable
power
supply
until
the
BT
indicator appears
in the
UUT
display.
6.
Verify that the
DMM
display
is
between +6.5 and +7.5V
dc.
7.
Decrease
the
output
of
the variable supply
until
the
DMM
displays
+6.0V.
8.
Verify that the
UUT
display
is
between 189.8 and 190.2
mV
dc.
9.
Program
the
DMM
Calibrator for an input of
0V
dc.
10.
On
the
UUT,
depress the ft/ S
function switch and
2 kft switch.
1
1.
Adjust the variable
power
supply
until the
DMM
displays +I0.0V
dc.
12.
Program
the
DMM
Calibrator
for
a
UUT
input of
1
kft.
13.
Verify that the
UUT
display
is.
between
0.998
and
1.002.
14.
Adjust the variable
power
supply
until
the
DMM
displays
+6V
dc.
15.
Verify that the
UUT
display
is
between
0.998
and
3.002.
4-12
20V
AC/
DC
4-13