Fluke 5520A - 3-9. DC Current Calibration

Calibration and Verification
Calibration
3
3-11
HI
LO
TRIG
GUARD
TC
20A
1000V
RMS
MAX
20V
RMS
MAX
20V
PK
MAX
1V PK
MAX
SHELLS
NOT
GROUNDED
NORMAL AUX
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
150V
PK
MAX
20V
RMS
MAX
20V PK MAX
20V PK MAX
5520A
CALIBRATOR
UUT
HP3458A
Attach wires
directly to
binding posts
yg105f.eps
Figure 3-4. Connections for Calibrating Thermocouple Sourcing
POWER
I
O
0•
123
456
789
ENTER
M
k
m
VHz
FIELD
EDIT
/
+
F
OPR EARTH SCOPE BOOST MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
¡F
µ
n
p
W
dBm sec
¡CA
MULT
x
DIV
÷
OUT
TRIG
5520A
CALIBRATOR
STBY
UUT
Dewar Flask
and Cap
Mineral Oil
Lag Bath
J type
Thermocouple
Mercury
Thermometer
HI
LO
TRIG
GUARD
TC
20A
1000V
RMS
MAX
20V
RMS
MAX
20V
PK
MAX
1V PK
MAX
SHELLS
NOT
GROUNDED
NORMAL AUX
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
150V
PK
MAX
20V
RMS
MAX
20V PK MAX
20V PK MAX
yg004f.eps
Figure 3-5. Connections for Calibrating Thermocouple Measuring
3-9. DC Current Calibration
The equipment listed in Table 3-8 is required for calibration of the dc current function.
(The equipment is also listed in the consolidated table, Table 3-1.)
You must use the calibrated dc current function of the 5520A later to prepare for ac
calibration. Because of this, you must save the dc current constants after dc current
calibration and exit calibration, then resume calibration. The following procedure for dc
current calibration explains how to save, exit, and resume calibration.