TB 9-6625-2107-24
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Fluke, Model 5720A (5720A) (p/o
CALIBRATOR
Ac voltage:
Range: 96 V to 303 V
MIS-35947); w/ac divider, Fluke,
Model 7405A-4207 (7405A-4207)
Frequency: 10 Hz to 10 MHz
1
Accuracy:
1Combined
accuracy of calibrator (ac voltage) and voltage divider (ac voltage) is 0.25% for TI needed accuracy of 1%,
while noting required TI accuracies of 2%, 3%, 4%, and 5% allow the use of a calibrator with 0.5%, 0.75%, 1%, and 1.25%
accuracies accordingly.
CALIBRATION PROCESS FOR ME-30F/U
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in the procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. Unless otherwise specified all controls and control settings refer to the TI.
7. Equipment Setup
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(s) to minimum after each step within the
performance check where applicable.
a. Remove protective cover from TI only when necessary to make adjustments. Replace
cover after completing the adjustments.
b. Adjust front panel mechanical zero adjustment for a 0 indication.
c. Assure 115/230 slide switch (rear panel) is set for 115 V ac.
d. Connect TI to 115 V ac source.
e. Set RANGE switch to 300 V and power switch to ON and allow at least 30 minutes
for warm-up and stabilization.