Fluke 74X Series, Руководство по калибровке

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Performance Verification Tests
15
DC Current Measurement
Proceed as follows to verify the DC Current Measurement function:
1. Connect the UUT to the 5500A and the HP3458A as shown in Figure 3. Disconnect
the jumpers on the three commons (lows) of the UUT if they are present.
2. Set the UUT and the HP3458A to the DC-Current Measurement function and the
5500A to Source DC-Current.
3. Press [RANGE] on the UUT to lock on the 30 mA range.
4. Set the 5500A to the first test point in Table 5, and edit its output so that the correct
reading is displayed on the HP3458A.
5. Observe the reading on the UUT and check to see it is within the range shown under
the appropriate column.
6. Continue through the test points, being careful to lock the UUT on the specified
range.
7. When you are finished, set the 5500A to [STANDBY].
TC
mA mA V V
RTD
RTD
SOURCE
300V
MAX
30V
MAX
30V
MAX
30V
MAX
MEAS
CAT
FLUKE 74X
Ω
SENSE INPUT
HI
LO
GUARD
HI
LO
HP3458
20V PK
MAX
HI
LO
TC
TRIG
OUT
1000V
RMS
MAX
20V
RMS
MAX
1V PK
MAX
20V PK
MAX
NORMAL AUX SCOPE
V, ,
RTD
A, -SENSE,
AUX V
200V PK
MAX
FLUKE 5500A CALIBRATOR
gb04f.eps
Figure 3. DC Current Measurement Verification Connections
Table 5. DC Current Measurement Verification Points
UUT
Range
Input
mA
Minimum
1 Year
Maximum
1 Year
Minimum
2 Year
Maximum
2 Year
30 mA 4 mA 3.995 4.005 3.995 4.005
30 mA 20 mA 19.994 20.007 19.992 20.009
30 mA 30 mA 29.993 30.008 29.990 30.011
30 mA -30 mA -30.008 -29.993 -30.011 -29.990
110 mA 0 mA 0.02 -0.02 0.017 -0.02
110 mA 100 mA 99.97 100.03 99.96 100.04
110 mA -100 mA -100.03 -99.97 -100.04 -99.96