TB 9-6625-2074-24
CALIBRATION PROCESS FOR
BOONTON, MODEL 92BD WITH SERIAL NUMBER 2891 AND ABOVE
11. Preliminary Instructions
a. The instructions 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.
c. Unless otherwise specified, verify the results of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Additional maintenance information is contained in the manufacturer's manual for this TI.
d. When indications specified in paragraph 13 are not within tolerance, perform the
power supply check prior to making adjustments. After adjustments are made, repeat
paragraph 13. Do not perform power supply check if all other parameters are within
tolerance.
e. Unless otherwise specified, all controls and control settings refer to the TI.
12. Equipment Setup
a. Connect RF probe to PROBE jack.
b. The RF probe authorized for use with TI must have serial numbers matching the TI
serial numbers. If a new probe is calibrated with TI, annotate new probe with TI serial
number. Do not use any probe not calibrated with TI.
c. Remove TI protective cover as required for adjustment.
d. Connect TI to a 115 V ac source.
e. Energize TI and allow TI to warm up for 1 hour.
13. RF Millivoltmeter Accuracy
a. Performance Check
(1) Press 30 mV FULL SCALE pushbutton.