TB 9-4920-456-24
Table 2. Minimum Specifications of Equipment Required Continued.
Manufacturer and model
Common name
Minimum use specifications
(part number)
RADAR TEST SET1
(AN/UPM-155), Hewlett-
Packard, Model 54602A (54602A)
Amplitude range: 4 V per div
Amplitude accuracy: 6.25%
Risetime/falltime: <0.025 ms
Time accuracy: 10%
Period range: 20.1 to 20.5 ms
Radar Test Set:
Period accuracy: 0.24%
SIF code output: 0000 to 7777
(2 framing pulses and up
to 12 information pulses)
Mode 4, three pulse reply: Spaced 1.75 ms,
PW 0.5 ms
Pulse accuracy: 0.0875 ms
PRF: 500 and 1000 Hz
PRF accuracy: 0.25 Hz
SIF reply with X pulse:
An X pulse spaced 10.15 ms
X pulse accuracy:
0.02 ms after the F1 pulse
SIF emergency replies:
Each mode code is followed by three sets
of empty bracket pulses with F1 and F2
spaced 20.3 ms apart and each new F1
pulse spaced 4.35 1.0 ms after its
preceding F2 pulse
SIGNAL GENERATOR
Frequency range: 1.030 and 1.090 GHz
Aeroflex, Model 2023B (2023B) or
SG-1207/U
Amplitude: 0 dBm
VSWR BRIDGES
Frequency: 1.090 GHz
Wiltron, Model 60NF50
(7910310-3)
Directivity: ≥39 dB
Limited deployment.
1
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.
