TB 9-4931-504-40
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Reference Calibration
Standards Set, NSN 4931-00-621-7878. Alternate items may be used by the calibrating
activity. The items selected must be verified to perform satisfactorily prior to use and must
bear evidence of current calibration. The equipment must meet or exceed the minimum use
between the standard and TI. Where the four-to-one ratio cannot be met, the actual
accuracy of the equipment selected is shown in parenthesis.
5. Accessories Required. The accessories required for this calibration are common
usage accessories, issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure. The following peculiar accessory is also required for this calibration:
Extender, Tektronix type 067-0645-00 (two required).
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
CALIBRATOR
Range: 3.42 to 911 mV rms
Fluke, Model 5720A (5720A) (p/o
at 50 kHz
MIS-35947)
Accuracy: 0.75%
Range: -30.9 to +30.9 V dc
Hewlett Packard, Model 3458A
(3458A)
Accuracy: 0.75%
Must be supplied with TI
Tektronix, Type 5440 (MIS-28706-1)
Fluke, Model 5820A-5C-GHZ
Range: 10 to 500 MHz
(5820A-5C-GHZ)
CALIBRATOR
Range: 2 ns to 10 ms
Accuracy: +0.75%
PULSE GENERATOR
Range:
87.5 ps or less
Hewlett-Packard, Model 1105A/
1106A (MIS-10215)
CALIBRATION PROCESS
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 this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
