Fluke 8010A - 4-48. Calibration Procedure

MAINTENANCE
CALIBRATION PROCEDURE
2.
On
the UUT, select
the DC mA/A
function,
lOA
range.
3.
Set
the DMM
Calibrator
for an output
of
1900
mA
dc.
Verify that
the display reading
is
between
“1.88”
and
“1.92”,
4-48.
CALIBRATION
PROCEDURE
4-49. The
Calibration
Procedure should
be
used any
time your
instrument
has been
repaired
orfails
to
pass the
Performance
Test. The
Calibration
Procedure consists
of
four
parts:
•
The
Turn-On
Check
verifies the
proper power
supply
voltages which is
a
basic necessity
of
calibration.
•
The DC
Calibration
Adjustment calibrates
the dc
voltage,
dc current,
resistance, and conductance
circuits.
•
The
AC
Calibration
Adjustment calibrates all the
ac
voltage
and ac current
circuits.
•
The Low Ohms
Calibration Adjustment calibrates
the low
ohms
circuit of the 80 12A.
Before
starting
the
Calibration procedure, perform the
Calibration
Access
procedure
given
earlier in this section.
Refer
to
Figure
4-3
for the
location
of
the
Calibration
Adjustments.
During the
Calibration procedure,
your
Multimeter is referred
to
as
the UUT (Unit Under Test).
NOTE
Before
beginning the
Calibration procedure,
set the
POWER
switch (on the
UUT) to ON
and
allow
the
instrument to stabilize
for
approximately
5
minutes.
Perform
all
calibration
adjustments
at an
ambient
temperature
of
23°
C±5°C
(79°
F ±9°F).
WARNING
CALIBRATION
ADJUSTMENTS
ARE
PERFORMED ON
ENERGIZED CIRCUITS.
EXERCISE
CAUTION AT ALL TIMES, AND
USE
A
NON-CONDUCTIVE TOOL
FOR ALL
ADJUSTMENTS.
4-50.
Power
Supply
Check
CAUTION
Do not
use this
procedure
If
your instrument
contains the
Rechargeable Battery Option.
4-51.
Use
the following
procedure to verify the
power
supply
voltages:
1. On
the
UUT,
select the
DC
V
function,
200V
range.
Verify that the
display reading
is
“00.0”
±
one
digit.
2.
For
each test
point in
Table
4-7,
use the
DMM
to verify
the voltage limits specified for your
Multimeter.
(Measurement values given in
Table
4-7
referenced to
ground
at
TP6.)
4-52.
DC
Calibration
Adjustment
4-53.
Use
the
following
procedure
to
calibrate
the DC
Voltage, DC
Current,
Resistance, and Conductance
functions:
1. On
the UUT,
select the DC V function, 2V
range.
2.
Connect
the HI
output terminal
of
the
DMM
-
Calibrator to
the V
/
kO/ S
input terminal of
the
UUT.
Connect the LO output
terminal
of the
DMM
Calibrator to
the
COMMON
input
terminal of
the
UUT.
3.
Set the DMM
Calibrator
for
a dc output
of
1.888V.
Table
4-7.
Power Supply
Voltages
TEST
POINT
VOLTAGE
FUNCTION
VOLTAGE
LIMITS
FOR
115V, 60 Hz
INSTRUMENTS
FOR
100V,
50-60 Hz
INSTRUMENTS
FOR
230V, 50
Hz
INSTRUMENTS
’
TP5
DIGITAL
REFERENCE
-2.1
± 0.4V
-2.1
±0.4V
-2.1
±0.4V
TP7
-vss
-6.5 ±
IV
-4.7+
1V
-6.5±
IV
TPS
-VA
-15+ IV
-11
+
IV
-15+
IV
TP9
+VDD
+2.9 ±
0.3V
+2.9
±
0.3V
+2.9
± 0.3V
TP10
+VA
+15±
IV
+11 ±
IV
+15±
IV
4-8