TB 9-4931-533-40
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.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
ATTENUATOR
Range: 0.01 to 18 GHz
Weinschel Model 44-60
Attenuation: 60 dB
ATTENUATOR
Range: 0.01 to 18 GHz
Alan Ind. Model 50 MP-30-864
Attenuation: 30 dB
ATTENUATOR SET (FIXED)
Range: 0.01 to 18 Ghz
Weinschel, Model 9918, 9918-6dB,
Accuracy: test report
9918-10dB, 9918-20dB, 9918-30dB,
and 9918-60dB (9918)
AUTOTRANSFORMER
Range: 105 to 125 V ac
Ridge, Model 9020A
Accuracy: 1%
(9020A)
PRECISION IF
Range: 20 to 100 dB, 30 MHz
Weinschel Model PA-2 (7912047-1)
ATTENUATOR
Accuracy: ( 0.0005 dB/10) above
20 dB reading (from test report)
POWER METER
Range: -20 to +10 dBm
Hewlett-Packard, Model E12-432A
Accuracy: 5%
(MIS-30525) w/thermistor mount,
Hewlett-Packard, Model478A-H75-
(7915907) and 8478B (8478B)
POWER SPLITTER
Frequency: 0.01 to 18 GHz
Weinschel, Model 1870A (1870A)
SIGNAL GENERATOR NO.1
Range: 0.01 to 2.1 GHz
(SG-1207U)
Accuracy: 0.1%
SIGNAL GENERATOR NO.2
Range: 2 to 18 GHz
(SG-1219U)
Accuracy: 0.1%
VARIABLE ATTENUATOR
Range: 0 to 69 dB, 0.01 to 18 GHz
Weinschel, Model AF117A69-34
Accuracy: 1.9 dB
(AF117A-69-34)
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.
d. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup