TB 9-6625-1914-24
(2) LINEAR SENSITIVITY control to 1 mV/DIV (1 mV X 1).
s. Position RF plug-in controls as listed in (1) through (4) below:
(1) AMPL CAL control adjusted for a 7.1 division signal amplitude display.
(2) SCAN WIDTH (red) switch to 0-100 MHz (0-1250 MHz on Model 8554( )).
(3) SCAN WIDTH PER DIVISION switch to 10 MHz.
(4) BANDWIDTH switch to 10 kHz.
t. Set TI LOG/LINEAR switch to LOG (10 dB LOG on Model 8552B) and LOG REF
LEVEL switch to -10 dBm.
u. Rotate BASE LINE CLIPPER control fully cw. Display section will have at least
two blank divisions on bottom of display.
v. Rotate BASE LINE CLIPPER control fully ccw.
w. Set SCAN TIME PER DIVISION switch to all positions while observing display.
Scan should occur in each position.
x. Set SCAN TIME PER DIVISION switch to 20 ms.
y. Set spectrum analyzer RF plug-in SCAN WIDTH (red) switch to PER DIVISION.
DISPLAY UNCAL lamp will illuminate and CAL OUTPUT 30 MHz marker and its
harmonics will be visible on display.
z. Adjust RF plug-in FREQUENCY controls to center CAL OUTPUT 30 MHz marker
on display.
aa. Set RF plug-in SCAN WIDTH PER DIVISION switch to 20 kHz (200 kHz on
model 8554( )). Signal will remain centered on display. It may be necessary to adjust
spectrum analyzer RF plug-in FREQUENCY FINE TUNE control to keep signal centered
on display.
bb.Carefully adjust RF plug-in coarse FREQUENCY control. Displayed signal will
jump to left or right in approximate increments of 100 kHz (approximately 1 MHz for Model
8554( )). This represents proper operation of reference oscillator, automatic phase control
circuit, and tuning stabilizer circuits.
cc. Adjust RF plug-in FREQUENCY and FREQUENCY FINE TUNE controls as
necessary to center display.
8. Calibrator Output Amplitude
CAUTION
Damage may occur if any of the spectrum analyzer IF plug-ins
display section outputs are connected to RF plug-ins.
