Adjustment Procedure—
DM 5010
Preparation
Before
adjustments can
be
performed, the internal CAL
jumper
must be
repositioned.
For access to the jumper, re
move
the instrument’s left side cover by turning the two
plastic
fasteners.
The
jumper is located in the lower rear
corner
of
the CPU
board (A14). See Fig.
10-1 in the pullout
pages
of
this
manual.
Reposition the CAL jumper, P1132, to
the CAL position. Also, make certain the
50-60 Hz jumper is
positioned
to match the power
module
line frequency. This
jumper
is
also located on the CPU board.
Replace the side
cover.
Since the
DCV
and OHMS adjustments are more
sensi
tive
to temperature
variations, these adjustments are made
with
the instrument operating in the power module. Install
the DM 5010
in the power module, turn on the power mod
ule and
allow warm-up time before beginning adjustments.
WARNING
Dangerous
voltages may be
encountered in
the
foi
lowing
steps. Caution must
be exercised. Do not con
tact
the output connectors
of the
voltage calibrator,
the input terminals of the DM 5010, or
the internal cir
cuitry
of the DM 5010. Also, do not contact the inter
nal
adjustments, since
they
may be at the DM 5010
input
potential;
use
only
an insulated adjustment tool
for
adjustments.
Preliminary
Control Settings
DCV
NULL
LOW FREQ RESPONSE
RANGE
TRIGGER MODE
CONVERSION
RATE
CALCULATIONS
REAR
INPUT
on
off
off
STEP (200 mV range)
RUN
on
FAST off
all off
off
e. Set the range and FAST button as shown in the next
line of the table.
f. Repeat parts c
through e for each succeeding line in
the table.
g. Remove the shorting plug.
DM5010
!
DM5010
Display
Table
6-2
DCV
OFFSET
CALIBRATION FACTORS
Range
FAST
Press
wiaµiay
Reading
200
mV
off
ENTER
0.00 mV
on
ENTER
0.0 mV
2 V
on
ENTER
.OOu V
off
ENTER
.0000
V
20
V
off
ENTER
0.000 V
on
ENTER
0.00
V
200
V
on
ENTER
0.0 V
off
ENTER
0.00 V
1000
V
off
ENTER
0.0 V
on
ENTER
I
0. V
2.
Adjust
the DCV Gain Calibration Factors
a. Set the DM 5010 controls
to the preliminary control
settings.
b. Connect the de voltage calibrator through appropriate
cables
and connectors to the DM5010 HIGH and LOW
connectors.
c.
Set the
de voltage calibrator output to 190 mV de.
1.
Adjust the
DCV Offset Calibration Factors
a. Set the
DM 5010 front-panel controls to the prelimi
nary settings.
b. Connect the dual
banana shorting plug between the
DM
5010 HIGH
and LOW INPUT
connectors.
d. Press ENTER.
e. CHECK—that the display reads as shown in Table
6-3,
±
1 in
the
LSD.
f. Set the FAST
button as shown in the table.
c.
Press ENTER.
g. Press ENTER.
d. CHECK
—that the
display reads as shown in Table
6-2, ±1
in the least significant digit (LSD).
h. CHECK—that the display
reads as shown in the ta
ble, ± 1
in the LSD.
6-3
Summary of Contents for DM 5010
Page 14: ...DM 5010 2994 00 DM 5010 Programmable Digital Multimeter xii ADD JUL 1986...
Page 27: ...Operating Instructions DM 5010 2994 03 Fig 2 3 DM 5010 front panel controls and connectors 2 3...
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Page 251: ...Section 8 DM 5010 OPTIONS No options are available 8 1...
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Page 272: ...DM 5010 2994 37 Fig 10 2 Location of DM 5010 adjustments and test points...
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Page 276: ...DM 5010 2994 112 DM 5010 BLOCK DIAGRAM...
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Page 337: ...63 REV JUN 1986...
Page 338: ...FIG 1 EXPLODED DM 5010...
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