TB 9-6625-2340-35
(34) Set up measuring receiver to measure RF power.
(35) Adjust signal generator No. 3 output level for a -20 0.2 dBm indication on
measuring receiver.
(36) Set signal generator No. 3 RF OUTPUT to off.
-15 dBm.
(38) Set up measuring receiver to measure RF power
(39) Adjust signal generator No. 2 output level for a -20 0.2 dBm indication on
measuring receiver.
(40) Set signal generator No. 2 RF OUTPUT to off.
(41) Disconnect sensor module from power splitter.
(42) Connect TI RF INPUT to the open port of the power splitter.
(43) Set signal generator No. 2 and signal generator No. 3 RF OUTPUT to on.
(44) Press TI keys as listed in (a) through (d) below:
(a) CENTER FREQUENCY, 2.0995, GHz.
(b) CF STEP SIZE, 1, MHz.
(c) FREQUENCY SPAN, 2, kHz.
(d) ATTEN, 0, dB.
(45) When sweep is complete, press TI MARKER PEAK SEARCH and MKR→CF
keys and wait for completion of the sweep.
(46) Press TI MARKER ∆, CENTER FREQUENCY, and ⇓ keys.
(47) When sweep is complete, press TI MARKER PEAK SEARCH key and record
the MKR A amplitude in peak search 1 column of table 34.
(48) Press TI ⇑, ⇑, ⇑ keys and wait for completion of sweep.
(49) Press TI MARKER PEAK SEARCH key and record the MKR A amplitude in
(50) Choose the smaller of the two values recorded in the peak search columns and
record the value (no sign) in Absolute Value column of table 34.
(51) Calculate the third order intercept using the formula below. Calculated value
will be within the limits specified in table 34.
Adjusted output level + absolute value/2 = third order intercept
Signal generator
Signal generator
No. 3
No. 2
Test instrument
Values
Adjusted Center
CF
Adjusted
Calculated
Peak
Peak
freq.
step
output
output
limit
Absolute
search
search
(GHz)
size
level
Freq.
level
Freq.
(dBm)
value
2
1
(MHz)
(dBm)
(GHz)
(dBm)
(GHz)
2.0995
-20
2.1005
-20
2.0995
1
>7
67