Current Test; Resistance And Conductance Tests - Fluke 8050A Instruction Manual

MAINTENANCE
LINEAR VOLTAGE TEST
Table 4-5. dB VoUage Test
INPUT
STEP SELECT RANGE
LEVEL FREQUENCY
DISPLAY READING
1 Short Circuit
Below -75 dB
2
200 mV dB
10.00 mV ac rms 100
Hz
-37.28 to -38.28
3
10.00 mV ac rms
10
kHz
-37.28 to -38.28
4 1.ooooV ac rms
100
Hz +02.07 to +02.37
5. Disconnect the DMM Calibrator from the
8050A.
6. On the 8050A, set the POWER switch to OFF.
7. Set the REF Z switch to ON (in).
8. On the 8050A, set the POWER switch to ON
and verify that the display reads 600 (the
default reference impedance) for 3 seconds,
then sequences through all stored reference
values at a I-second rate. Stored reference
impedances are: 50, 75,93, 110, 125, 135,
ISO,
250, 300, 500, 600, 800, 900, 1000, 1200, and
8(000).
NOTE
If
the default reference impedance ofStep 8 is
not 600, refer to the dB Reference Impedance
Power Up Setting procedure and check
if
the
default reference impedance has been
changed
9. This concludes the dB Voltage Test, remove
power from the DMM Calibrator before
dismantling the test setup.
4-38. Current Test
4-39. Use the following procedure to verify the proper
operation of the ac and de current measurement
functions:
I. Select the DC rnA function.
2. Connect the DMM Calibrator to the 80SOA as
follows: HI to the rnA input connector and LO
to the COMMON input connector.
3. For each step in Table 4-6, select the range
shown and adjust the DMM Calibrator to the
required 8050A current input, then verify that
the 8050A display reading is within the limits.
4. Select the AC V function, 20mA range.
5. Adjust the DMM Calibrator for an output
19.000 mA,at a frequency of 100Hz.
6. Verify that the display reads between 18.800
and 19.200.
7. This concludes the Current Test. Remove
power from the DMM Calibrator before
dismantling the test setup.
Table 4-6. Current Test
STEP
SELECT
INPUT
DISPLAY
RANGE READING
1
200 p.A
190 pA
189.41 to 190.59
2 2mA 1.9mA
1.8941 to 1.9059
3 20mA 19mA
18.941 to 19.059
4
200mA 190mA
189.41 to 190.59
5
2000mA 1900 mA
1894.1 to 1905.9
4-40. Resistance and Conductance Tests
4-41. Use the following procedure to verify the proper
operation of the resistance and conductance
measurement functions:
1.
Select the kO function, 2000.
2. Connect the DMM calibrator to the 8050A as
follows: HIto the V
IkOI
S input connector and
LO to the COMMON input connector.
3. For each step in Table 4-7, select the range
shown and adjust the DMM Calibrator to the
required 8050A resistance input, then verify
that the 8050A display reading is within the
limits.
4. This concludes the Resistance and
Conductance Tests. Remove power from the
DMM Calibrator before dismantling the test
setup.
4-7