TB 9-6625-2179-24
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
to-one ratio between the standard and TI. Where the four-to-one ratio cannot be met, the
four-to-one ratio 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 the
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
Range: 20 Hz to 500 MHz
Fluke, Model PM6681/656
Accuracy: 1 x 10
-8
COUNTER
(PM6681/656)
MEASURING
Range: 10 to 95% AM
Measuring receiver system N5530S
RECEIVER
1 to 400 kHz FM
consisting of: Spectrum Analyzer,
Agilent Model E4440A (E4440A),
Accuracy: (0.75)% AM
(2.0)% FM
Power meter, Agilent Model E4419B
(E4419B), and Sensor module, Agilent
Range: 0 to +20 dBm
Model N5532A opt. 504 (504), 518
Accuracy: 0.125 dBm
(518), 526 (526)
POWER
Range: 500 kHz to 2.0 GHz
Weinschel, Model 1870A
SPLITTER
(7916839)
SIGNAL
Range: 1 MHz to 2 GHz
(SG-1207/U)
Accuracy:1
RF REFERENCE
Range: 10 Hz to 150 kHz
Fluke, Model 9640A-STD
SOURCE
Accuracy: ( .05 dB)
VARIABLE
Range: 0 to 25 dB
Weinschel, Model AF117A-69-34
ATTENUATOR
Accuracy: Test report
(AF117A-69-34)
1Accuracy
is determined by frequency counter or measuring receiver depending upon parameter being calibrated.
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.
CHANGE 1 3
