TB 9-6625-2134-24
(288) Position controls as in (280) and (282) above and adjust signal generator
for 21 dB less than recorded in (283) above.
(289) Adjust IF amplifier gain with R1015 (fig. 21) for a display amplitude of 7
divisions on crt.
(290) Disconnect signal generator and reconnect P321.
(291) Connect CAL OUT to RF INPUT.
(292) Position controls as in (280) and (282) above.
(293) Adjust AMPL CAL control (front panel) fully ccw.
(294) Adjust R1015 (fig. 21) for a signal amplitude of 5 divisions on crt.
(295) Adjust AMPL CAL control for a full screen display.
(296) AMPL CAL control will now have 6 dB down range and at least 6 dB of
up-range.
(297) Position controls as listed in (a) through (g) below:
(a) FREQUENCY control to 200 MHz.
(b) FREQUENCY SPAN/DIV control to 20 MHz.
(c) REFERENCE LEVEL control to -10 dBm.
(d) VERTICAL DISPLAY 10 dB/DIV pushbutton to on.
(e) AUTO RESOLUTION pushbutton to on.
(f)TIME/DIV switch to AUTO.
(g) DIGITAL STORAGE (option 02) VIEW A pushbutton on.
(298) Adjust PEAK/AVERAGE control until cursor is approximately 1 division
above bottom of screen.
NOTE
In technique of (299) through (302) below, adjustments for SN
B043114 and below are in parentheses.
crt (about 0.25 division over-span from left graticule line).
(301) Alternately switch DIGITAL STORAGE VIEW A pushbutton on and off
while adjusting R1046 (fig. 22) until storage signal at left of crt tracks with the nonstored
signal. Repeat technique for right edge and adjust R1048 (fig. 22).
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