Dc Voltage Linearity Test; Dc Voltage Output Noise (10 Hz To 10 Khz) Test - Fluke 5700A Series Service Manual

3. Repeat load regulation testing at the remaining Calibrator outputs shown in Table
3-47.
4. Set the Calibrator to standby and disconnect all equipment from the Calibrator.

3-33. DC Voltage Linearity Test

Use Table 3-35 for a test record. Proceed as follows to test the dc voltage linearity:
1. Self calibrate the Kelvin-Varley (KV) divider as called for in its service manual.
2. Connect the equipment as shown in Figure 3-18.
732B
10V
HI
LO
GRD
3. Set the KV dials to zero by using the RANGE LOCK. Set the Calibrator to 0V on the
11V range operate. Note the null detector reading. Press OFFSET on the Calibrator.
4. Set KV dials to 0.999999X and Calibrator for a 10V output.
5. Use the Calibrator output adjustment to obtain a null detector reading equal to the
reading noted in step 3. Press SCALE on the Calibrator.
6. For each of the KV settings tabulated in Table 3-36, make the required Kelvin Varley
setting, and verify that the null detector reads within the limits shown.
3-34. DC Voltage Output Noise
Use Table 3-36 for a test record. Proceed as follows to test the dc voltage output noise
that falls in the range 10 Hz to 10 kHz:
1. Connect the equipment as shown in Figure 3-19.
720A
INPUT OUTPUT
HI HI
LO LO
GND GND
*NOTE: IF THE NULL DETECTOR IS NOT GROUNDED THROUGH
POWER LINE, CONNECT ITS GROUND TERMINAL
TO THE GROUND TERMINAL ONTHE 5700A.
Figure 3-18. DC Voltage Linearity Test
(
10 Hz to 10 kHz
Calibration and Verification
NULL DETECTOR
HI
LO GND*
GRD
CALIBRATOR (UUT)
OUTPUT SENSE
HI HI
LO LO
GND
GRD
)
Test
3
Optional Tests
F3-14.EPS
3-43