TB 9-6625-2340-24
REFERENCE LEVEL, 0, dBm.
(c)
SCALE LOG ENTER db/DIV, SHIFT, 10, dBm.
(d)
SHIFT, ATTEN, SHIFT, 0-2.5 GHz, 0, dBm.
(e)
RES BW, 10, kHz.
(f)
VIDEO BW, 30, kHz.
(g)
SWEEP TIME, 30, mSEC.
(h)
(46) Set synthesized signal generator No. 1 output frequency to 9.0 GHz and an
output level of 9 dBm.
(47) Press TI keys as listed in (a) through (c) below:
(a) CENTER FREQUENCY, 9, GHz.
(b) FREQUENCY SPAN, 1, MHz.
(c) ATTEN, 0, dBm.
(48) Set up measuring receiver to measure RF power.
(49) Adjust synthesized signal generator No. 1 output level for a 15.00 0.05 dBm
indication on measuring receiver.
(50) Press TI MARKER PRESEL PEAK key and wait for (PEAKING!) on TI
to disappear.
(51) Press TI keys as listed in (a) through (f) below:
(a) SCALE LIN.
(b) SHIFT, AUTOA.
(c) REFERENCE LEVEL, 15, dBm.
(d) FREQUENCY SPAN, 0, Hz.
(e) VIDEO BW, 30, Hz.
(f) MARKER NORMAL.
50 dBm.
(52) The marker amplitude indicated on TI display should be
key.
(53) Press TI MARKER
(54) Change synthesized signal generator No. 1 output level to 1 dBm.
(55) Adjust synthesized signal generator No. 1 output level for a 5.00 0.02 dBm
indication on measuring receiver.
(56) Press TI REFERENCE LEVEL, 5, and dBm keys.
(57) Record the marker amplitude indicated on TI display in displayed amplitude
column of table 51.
Table 51. Gain Compression ( 5 dBm)
Measuring receiver
Test
indication
instrument
Level
Reference level
Displayed amplitude
(dBm)
(dBm)
(dBm)
5
5
(58) Calculate gain compression using the formula below. Calculated value will be
within the limits specified in table 52.
Amplitude @ 15 dBm amplitude @ 5 dBm = gain compression
76
