TB 9-6625-1914-24
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
25. Equipment Setup
a. Mate TI with IF plug-in and install in display section.
b. Perform Section III, paragraph 7 b through 7 cc.
26. Scan Width Accuracy
a. Performance Check
(1) Connect signal generator to RF INPUT.
(2) Position TI controls as listed in (a) through (g) below:
(a) FREQUENCY control to 600 MHz.
(b) FREQUENCY FINE TUNE control centered.
(c) BANDWIDTH switch to 300 kHz.
(d) SCAN WIDTH (red) switch to PER DIVISION.
(e) SCAN WIDTH PER DIVISION switch to 100 MHz.
(f) INPUT ATTENUATION switch to 0 dB.
(g) TUNING STABILIZER switch to OFF.
(3) Position IF plug-in controls as listed in (a) through (h) below:
(a) BASE LINE CLIPPER control fully ccw.
(b) SCAN TIME PER DIVISION switch to 10 ms.
(c) LOG REF LEVEL switch to -20 dB.
(d) LOG REF LEVEL (LINEAR SENSITIVITY vernier) vernier control to 0.
(e) LOG/LINEAR switch to LOG (10 dB LOG on model 8552B).
(f) VIDEO FILTER switch to OFF.
(g) SCAN MODE switch to INT.
(h) SCAN TRIGGER switch to AUTO.
(4) Adjust signal generator frequency and amplitude controls until signal display
(approximately 100 MHz).
(5) Increase signal generator frequency 200 MHz above frequency recorded in (4)
above. Signal display will move to within 0.3 division of second graticule line to right.