TB 9-4931-535-24
(24) Divide first TI actual marker offset frequency indication recorded in table 7 by
first TI actual marker offset frequency indication recorded in table 6. Results will be <11 to
1 ratio.
(25) Repeat (24) above for remaining TI actual marker offset frequency indications
19. Tracking Generator Flatness
a. Performance Check
(1) Press keys and enter values using ENTRY keys as listed in (a) through (e) below:
ENTRY RECALL 604.
(a)
ENTRY INSTR PRESET.
(b)
ENTRY dB/DIV to 1 dB.
(c)
or .
INPUT ENTRY RANGE to -20 dBm using ENTRY STEP
(d)
ENTRY REFERENCE LEVEL to -20 dBm.
(e)
(2) Allow one complete sweep to occur.
(3) Press keys and enter values using ENTRY keys as listed in (a) through (d) below:
TRACE STORE A
B.
(a)
ENTRY INSTR PRESET.
(b)
ENTRY dB/DIV to 1 dB.
(c)
INPUT ENTRY RANGE to .0 dBm using ENTRY STEP .
(d)
input.
(4) Connect TI TRACKING GENERATOR output to 50-75
(5) Adjust TRACKING GENERATOR AMPLITUDE control to position trace in
the middle of crt display.
(6) Press TRACE A - B key to on.
NOTE
Ignore the LO feedthrough point at 0 Hz in (7) and (9) below.
(7) Adjust MARKER/CONTINUOUS ENTRY knob to move marker to the most
negative point on trace using TI marker amplitude indication.
(8) Press MARKER/CONTINUOUS ENTRY OFFSET key to on and then
MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
(9) Adjust MARKER/CONTINUOUS ENTRY knob to move marker to the most
positive point on trace using TI marker amplitude indication. TI marker amplitude
indication will be 1.4 dB.