Calibration Procedure; Power Supply Check; Dc Calibration Adjustment; Power Supply Voltages - Fluke 8010A Instruction Manual

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 or
fails
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 12
A.
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