TB 9-6625-2327-35
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2
identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287 or AN/GSM-705. 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 specifications listed in table 2. The accuracies listed in table 2 provide a four-
to-one ratio between the standard and TI.
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
Table 2. Minimum Specifications of
Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
ATTENUATOR
10 dB with test report
Weinschel, Model 9918-10dB
(9918-( ))
AUDIO ANALYZER
Distortion Range: 100 Hz to 19 kHz
Boonton Model 1121
Capability: <0.2%
(1121)
Range: 100 MHz to 80 MHz
Fluke, Model PM6681/656
Accuracy: 0.25 ppm
(PM6681/656)
Range: 9.546 mV rms to 7.07 V rms
Hewlett-Packard, Model
Accuracy: 0.25%
3458A (3458A)
Range: 5.0 V at 100 ns
(OS-303/G)
Accuracy: 3.0%
POWER METER
Range: 100 kHz to 80 MHz
Hewlett-Packard, Model 437B
0 to 24 dBm
(437B); w/ power sensor, Model
Accuracy: 0.25%
8482A (8482A) .
(AN/USM-677)
SPECTRUM ANALYZER
Range: 500 kHz to 75 MHz
Capability: <-60 dBc
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
CHANGE 1