Ac Volts Calibration And Test - HP 3478A Technical Manual

3478A
i. If no performance checks are to be made, remove
the AC Calibrator from the 3478A. AC Volts Calibration
is now completed.
j. (Step #2.) If the performance checks are to be
made, set the AC Calibrator for a .03V at 20KHz output.
Set the 3478A to the 300mV Range. Check the reading
on the multimeter and make sure it is within the specified
limits (per Table 4-10).
k. (Step #3.) Do the same as in the previous step by
applying .3V at 20KHz to the multimeter.
l. (Step #4, 5, and 6.) Set the 3478A to the 3V Range.
Check the 1/10, 1/2, and full scale accuracy of the range
by applying 0.3V at 20KHz, 1.SV at 20KHz, and 3V at
20KHz, respectively. Check the readings.
m. (Step #7 and 8.) Set the 3478A to the 30V Range.
Check the 1/10 and full scale accuracy of the range by
applying 3V at 20KHz and 30V at 20KHz, respectively.
Check the readings.
n. (Step #9 and 10.) Set the 3478A to the 300V
Range. Check the 1/10 and full scale accuracy of the
range by applying 30V at 20KHz and 300V at 20KHz,
respectively. Check the readings.
o. (Step #11, 12, 13, and 14.) Check the full scale
accuracy of the 300mV, 3V, 30V, and 300V Range by
applying 0.3V at 50KHz, 3V at 50KHz, 30V at 50KHz,
and 300V at 5OKhz, respectively. Check the readings.
p. (Step #15.) Set the 3478A to the 300mV Range.
Table 4-10. AC Volts Calibration and Test
4-17
Check the full scale accuracy of the range by applying
0.3V at 100KHz. Check the reading.
q. (Step #16 and 17.) Set the 3478A to the 3V Range.
Check the 1/10 and full scale accuracy of the range by
applying 0.3V at 100KHz
respectively. Check the readings.
r. (Step #18 and 19.) Set the 3478A to the 30V Range.
Check the 1/2 and full scale accuracy of the range by
applying 1ISV at 100KHz and 30V at 100KHz,
respectively. Check the readings.
s. (Step #20.) Set the 3478A to the 300V Range.
Check the full scale accuracy of the range by applying
300V at 100KHz. Check the reading.
t. (Step #21.) Set the3478A to the 30V Range. Check
the full scale accuracy of the range by applying 30V at
300KHz. Check the reading.
u. (Step #22 and 23.) Set the 3478A to the 3V Range.
Check the full scale accuracy of the range by applying
3V at 50Hz and then 3V at 20Hz.
Calibrator set up for a 3V at 20Hz output. Check the
readings.
v. (Step #24.) Set the 3478A to the 4 Digit Display
mode by pressing the blue Shift button and then the
Uprange (4) button. Check the reading.
w. Disconnect the AC Calibrator from the 3478A. This
completes the AC Volts Calibration and Test.
TM 11-6625-3071-14
and 3V at 100KHz,
Leave the AC