TB 9-6625-2345-35
Paragraph
Page
Span/Div Accuracy................................................
Sweep Time Accuracy ..........................................
Resolution BW and Shape Factor........................
Noise Sideband Amplitude ..................................
Frequency Response .............................................
Dynamic Range and Accuracy ............................
RF Attenuator Accuracy ......................................
IF Gain Accuracy ..................................................
Gain Variation .....................................................
Sensitivity and Residual Response .....................
Harmonic and Intermodulation Distortion ........
Tracking Generator Frequency. Range ..............
Tracking Generator Output Level ......................
Tracking Generator Flatness ..............................
Tracking Generator Spurious Signals ................
Final Procedure ....................................................
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Spectrum Analyzer, AN/USM-620 (Tektronix, Model 495P). TM 11-6625-
3278-40 and TM 11-6625-3278-12 were used as the prime data sources in compiling these
instructions. The equipment being calibrated will be referred to as the TI (test instrument)
throughout this bulletin.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 9
hours, using the dc and low frequency and microwave technique.
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
pertain to this calibration are listed in table 1.
