Ohms Calibration And Test - HP 3478A Technical Manual

3478A
Table 4-12. Ohms Calibration and Test
9330A/100K)
1M ohm ± .002%; (Guildline Model 9330/iM)
10M ohm + .01%; (Guildline Model 9330/O1M)
4-106. Calibration and Test Procedure.
following:
a. Reset the 3478A by pressing the blue Shift button
and then the SGL/TRIG (TEST/RESET) button.
b. Make sure the front panel CAL ENABLE Switch is
set to the calibration enable position (the slot of the
switch is in the vertical position).
c. (Step #1.) Set the 3478A to the Ohms Function and
the 300 Range.
d. Set the multimeter to the Single Trigger Mode by
pressing the SGL/TRIG button.
e. Short the 3478A's HI and LO INPUT Terminals. If
the 4-Wire Ohms Function is to be calibrated, short the
terminals as shown in Figure 4-6.
f. Press the blue Shift button and then the LOCAL
(CAL) button.
g. Press the SGL/TRIG button once.
h. (Step #2.) Connect the 302 or 10() Standard
Resistor to the 3478A's INPUT Terminal. If the 4-Wire
Ohms Function is to be calibrated, connect the resistor
as shown in Figure 4-7.
i. Press the blue Shift button and then the LOCAL
(CAL) button.
j. Press the SGL/TRIG button once.
k. (Step #3 and 4.) Set the 3478A to the 300(2 Range
and calibrate the range using zero and full scale (or 1/3
scale) inputs.
through i, except use a 3000 (or 100() resistor instead of
a 30(0 (or 100) resistor.
l. (Step #5 and 6.) Set the 3478A to the 3Kn Range
and calibrate the range using zero and full scale (or 1/3
scale) inputs.
through i, except use a 3K( (or IKO) resistor instead of a
30Q (or 100) resistor.
m. (Step #7 and 8.) Set the 3478A to the 30K( Range
and calibrate the range using zero and full scale (or 1/3
scale) inputs.
through i, except use a 30K( (or 10Kfl) resistor instead of
a 30(2 (or 100) resistor.
n. (Step #9 and 10.) Set the 3478A to the 300K9
Do the
Range and calibrate tie range using zero and full scale
(or 1/3 scale) inputs. Use the same procedures in steps
d through i, except use a 300KQ) (or .100K) resistor
instead of a 30(l (or 10() resistor.
o. (Step #11 and 12.) Set the 3478A to the 3M( Range
and calibrate the range using zero and full scale (or 1/3
scale) inputs.
through i, except use a 3Mn (or IMD) resistor instead of a
300 (or 10(2) resistor.
p. (Step #13 and 14.) Set the 3478A to the 30M()
Range and calibrate the range using zero and full scale
(or 1/3 scale) inputs. Use the same procedures in steps
d through i, except use a 30M2 (or 10M2) resistor
instead of a 300 (or 10() resistor.
q. Since the performance checks are the same as the
calibration points, the checks are not required. Set the
CAL ENABLE switch to the horizontal position.
completes the Ohms Calibration and Test.
4-19/(4-20 blank)
TM 11-6625-3071-14
Use the same procedures in steps d
Use the same procedures in steps d
Use the same procedures in steps d
Use the same procedures in steps d
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