TB 9-6625-2340-24
IF Gain Uncertainty
a. Performance Check
(1) Press TI 2-22 GHz.
(2) Connect TI CAL OUTPUT to TI RF INPUT.
(3) Press TI RECALL, 8.
(4) Adjust TI AMPTD CAL control for a MARKER amplitude indication of 10.00
0.02 dBm on the TI display.
(5) Press TI 2-22 GHz key.
(6) Connect equipment as shown in fig. 23.
Figure 23. IF gain equipment setup.
(7) Set the synthesizer/level generator for an output frequency of 20.0010 MHz,
output amplitude of 2.0 dBm, and amplitude increment steps of 10 dB.
(8) Press TI keys as listed in (a) through (j) below:
CENTER FREQUENCY, 20.001, MHz.
(a)
FREQUENCY SPAN, 2, kHz.
(b)
MARKER PEAK SEARCH.
(c)
CF.
MARKER
(d)
REFERENCE LEVEL, 0, dBm.
(e)
VIDEO BW, 100, Hz.
(f)
RES BW, 1 kHz.
(g)
LOG ENTER dB/DIV, 1, dB.
(h)
MARKER PEAK SEARCH, .
(i)
SHIFT, ATTEN.
(j)
(9) Read the amplitude deviation from TI marker indication. Record displayed
amplitude level in deviation marker amplitude indication column of table 11.