TB 9-6625-2340-24
(11) Replace the 250 MHz low pass filter with the 1200 MHz low pass filter.
(12) Press TI keys as listed in (a) through (d) below:
2-22 GHz.
(a)
CENTER FREQUENCY, 800, MHz.
(b)
SPAN, 100, kHz.
(c)
REFERENCE LEVEL, 30, dBm.
(d)
(13) Set up signal generator for an output frequency of 800 MHz at an output level of
30 dBm.
(14) Adjust signal generator output level to position the trace at reference level (top)
graticule line.
(15) Press TI keys as listed in (a) through (h) below:
DISPLAY LINE ENTER, 100, dBm.
(a)
MARKER PEAK SEARCH.
(b)
MARKER CF.
(c)
STEP SIZE.
MARKER/
(d)
CENTER FREQUENCY, .
(e)
FREQUENCY SPAN, 10, kHz.
(f)
VIDEO BW, 30, Hz.
(g)
RES BW, 30 Hz.
(h)
on TI display to disappear.
(16) Wait for
(17) Press TI MARKER PEAK SEARCH key.
(18) Amplitude indicated on TI display will be within limits specified in table 32.
Table 32. Harmonic Distortion (800 MHz)
Test Instrument
Displayed
Center
Displayed
amplitude limit
frequency
(dBm)
100
800 MHz
Second
(19) Disconnect signal generator RF output connector from the test setup.
(20) Disconnect TI 10 MHz OUT (rear panel) from signal generator external
reference in connector (rear panel).
(21) Connect synthesized signal generator No. 1 RF Output to one end of the 8 GHz
low-pass filter.
(22) Connect TI 10 MHz OUT (rear panel) to synthesized signal generator No. 1 10
MHz REF IN (rear panel).
(23) Connect TI RF INPUT to the other end of the 8 GHz low-pass filter.
(24) Press TI keys as listed in (a) through (d) below:
2-22 GHz.
(a)
CENTER FREQUENCY, 7.2, GHz.
(b)
FREQUENCY SPAN, 100, kHz.
(c)
REFERENCE LEVEL, 0, dBm.
(d)
60