Fluke 74X Series, Руководство по калибровке

Страница: 20 / 44

74X Series
Calibration Manual
12
•
Ranges in the specification tables include the 10% over-range capability. Range
names on the 74X display do not include the 10% over-range. For example, the UUT
display shows
Range 100 mV, but the range name in the table is 110 mV.
•
Allow each item of verification equipment to satisfy its specified warm-up period.
•
Allow at least 5 minutes for warm up.
•
For each test, make sure the verification equipment has settled and that the
"unsettled" annunciator on the UUT is not displayed.
DC Volts Measurement
Proceed as follows to verify the DC Volts Measurement function:
1. Connect the UUT to the 5500A as shown in Figure 2. Connect the three lows (black
input jacks) with jumpers.
Caution
Do not force a dual banana plug between any two jacks in the
horizontal orientation. Doing so will damage the jacks. Use
the supplied jumper wires (P/N 944632). You can use a dual
banana plug in the vertical orientation.
2. Set the UUT to the DC Volts Measurement function.
3. Press [RANGE] on the UUT to lock on the 110 mV range.
4. Set the 5500A to the first test point in Table 3.
5. Observe the reading on the UUT and check to see if 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
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 74X FLUKE 5500A CALIBRATOR
+
_
gb03f.eps
Figure 2. DC Volts and AC Volts Measurement Connections