Fluke 5520A Service Manual page 68

5520A
Service Manual
Quan.
1 Fluke
1 Hewlett Packard
1 Fluke
1 Fluke
1 Fluke
1 Fluke
1 Guildline
Proceed as follows to calibrate the dc current function:
1. Perform the ACAL ALL and MATH NULL operations on the HP 3458A before you
2. Verify that the UUT is in standby.
3. Set the DMM to measure dc voltage.
4. Connect the DMM and 742A-1k Resistance Standard to the UUT as shown in
5. On the first dc current calibration point in Table 3-9, wait for the output to settle,
6. Enter the computed value into the UUT.
7. Proceed to the next calibration point, verify that the UUT is in standby, and
8. Repeat steps 3 through 6 above using the resistance standard or current shunt
9. Exit calibration and save the calibration constants modified so far by using the front
3-12
Table 3-8. Test Equipment Required for Calibrating DC Current
Manufacturer
5500A/LEADS
3458A with -002 option
742A-1k
742A-100
742A-10
742A-1
9230
begin.
Figure 3-6.
record the DMM voltage reading, and compute the UUT current output using the
certified resistance value of the 742A.
disconnect the 742A.
specified for each calibration point in Table 3-9.
panel menus or the CAL_STORE remote command.
Model
Test lead set
DMM
Resistance Standard, 1 k
Resistance Standard, 100
Resistance Standard, 10
Resistance Standard, 1
0.01
Equipment
shunt