TB 9-6625-2340-24
key.
(32) Press TI MARKER
(33) Change synthesized signal generator No. 1 output level to 9 dBm.
(34) Adjust synthesized signal generator No. 1 output level for a 15.00 0.02 dBm
indication on measuring receiver.
(35) Press TI REFERENCE LEVEL, 5, and dBm.
(36) Record the marker
amplitude indicated on TI display in displayed amplitude
column of table 48.
Table 48. Gain Compression ( 15 dBm)
Measuring receiver
Test
Indication
instrument
Level
Reference level
Displayed amplitude
(dBm)
(dBm)
(dBm)
15
5
(37) Press TI REFERENCE LEVEL, 15, and dBm keys.
(38) Adjust TI AMPLITUDE CAL control to place the signal trace 1 division below
the top graticule.
keys.
(39) Press TI MARKER NORMAL and
(40) Change synthesized signal generator No. 1 output level to 1 dBm.
(41) Adjust synthesized signal generator No. 1 output level for a 5.00 0.02 dBm
indication on measuring receiver.
(42) Press TI REFERENCE LEVEL, 5, and dBm.
(43) Record the marker amplitude indicated on TI display in Displayed Amplitude
column of table 49.
Table 49. Gain Compression ( 5 dBm)
Measuring receiver
Test
indication
instrument
Level
Reference level
Displayed amplitude
(dBm)
(dBm)
(dBm)
5
5
(44) Calculate gain compression using the formula below. Calculated value will be
within the limits specified in table 50.
Amplitude @ 5 dBm amplitude @ 15 dBm = gain compression
Table 50. Gain Compression ( 5 to 15 dBm)
Calculated gain compression
(dBm)
Min
Max
1
1
(45) Press TI keys as listed in (a) through (h) below:
RES BW, 3, MHz.
(a)
VIDEO BW, 3, MHz.
(b)
75