TB 9-4931-405-40
CALIBRATION PROCESS FOR
RUBICON, MODEL 2759
11. Preliminary Instructions
a. The instruction outlined in paragraphs 11 and 12 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 this 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.
12. Equipment Setup
WARNING
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. Utilizing the dc reference standard and standard resistor no. 1, characterize
multimeter to obtain 24 hour manufacturer specifications for dc voltage, resistance and dc
current.
b. Connect equipment as shown in figure 1, CONNECTION A.
13. Resistance
a. Performance Check
(1) Set multimeter for most accurate dc voltage measurements.
(2) Set calibrator for a nominal 10 A dc output.
(3) Allow sufficient time for stabilization (1 to 3 minutes), then record multimeter dc
voltage indication in table 4, section A. Calculate the calibrator's characterized 10 A
output using the formula:
Multimeter indication (in V)
10 A Actual Output =
Test report value of standard resistor