TB 9-6625-1914-35
(8) Position TI controls as listed in (a) through (d) below:
(a) BANDWIDTH switch to 30 kHz.
(b) SCAN WIDTH PER DIVISION switch to 1 MHz.
(c) RANGE MHz switch to 0-11 (not on some models).
(9) Substitute signal generator for function/arbitrary generator set for 10 MHz at
28.5 dBm.
(10) Adjust TI FREQUENCY control to place 10 MHz input signal on the far right
(+5) graticule line.
(11) Adjust function/arbitrary generator level to obtain same display amplitude as
measured in step 7.
(12) Adjust frequency from 10 MHz to 1 MHz while observing power meter to ensure
signal generator output amplitude remains constant. Signal pip amplitude displayed will
remain between 6.6 and 7.4 divisions.
NOTE
If signal pip peaks above 7.4 divisions, readjust
function/arbitrary generator level control for 7.4 divisions at
that point and continue checking the frequency response in the
steps below.
(13) Repeat technique of step 10 through 12 to check 1 MHz to 100 kHz setting the IF
BANDWIDTH to 10 kHz and SCAN WIDTH PER DIVISIONS to .1 MHz.
(14) Repeat technique of step 10 through 12 to check 100 kHz to 10 kHz setting the IF
BANDWIDTH to 1 kHz, SCAN WIDTH PER DIVISIONS to 10 kHz and TI FREQUENCY
control to place the LO signal on the far left (-5) graticule line.
(15) Repeat technique of step 10 through 12 to check 10 kHz to 1 kHz setting the IF
BANDWIDTH to .1 kHz, SCAN WIDTH PER DIVISIONS to 1 kHz and TI FREQUENCY
control to place the LO signal on the far left (-5) graticule line.
(16) If the function/arbitrary generator had to be readjusted per NOTE above, then
repeat the response test from 10 MHz to 110 MHz by setting the signal generator
amplitude at 10 MHz to correspond with the displayed amplitude of the function/arbitrary
generator at 10 MHz and repeat steps 1-6.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Position TI controls as listed in (a) through (e) below:
(a) RANGE MHz switch to 0-110 (not on some models).
