TB 9-6625-2340-24
(52) Set synthesized signal generator No. 1 and synthesized signal generator No. 2
RF Output to off.
(53) Press TI MARKER OFF key.
(54) Disconnect TI RF INPUT from the power splitter.
(55) Connect sensor module to the open port of the power splitter.
(56) Set synthesized signal generator No. 2 for an output frequency of 3.9995 GHz at
a level of 15 dBm.
(57) Set up measuring receiver to measure RF power.
20 0.2 dBm
(58) Adjust synthesized signal generator No. 2 output level for a
indication on measuring receiver.
(59) Set synthesized signal generator No. 2 RF Output to off.
(60) Set synthesized signal generator No. 1 for an output frequency of 4.0005 GHz at
a level of 15 dBm.
(61) Set up measuring receiver to measure RF power.
20 0.2 dBm
(62) Adjust synthesized signal generator No. 1 output level for a
indication on measuring receiver.
(63) Set synthesized signal generator No. 1 RF Output to off.
(64) Disconnect sensor module from power splitter.
(65) Connect TI RF INPUT to the open port of the power splitter.
(66) Set synthesized signal generator No. 1 and synthesized signal generator No. 2
RF Output to on.
(67) Press TI keys as listed in (a) through (c) below:
(a) CENTER FREQUENCY, 3.9995, GHz.
(b) CF STEP SIZE, 1, MHz.
(c) REFERENCE LEVEL, 20, dBm.
(68) Press TI MARKER OFF and MARKER PRESEL PEAK keys and wait for
(PEAKING!) on TI to disappear.
(69) Press TI MARKER PEAK SEARCH and MKR CF keys and wait for
completion of the sweep.
(70) Press TI MARKER , CENTER FREQUENCY and,
keys.
(71) When sweep is complete, press TI MARKER PEAK SEARCH key and record
the MKR A amplitude in peak search 1 column of table 35.
(72) Press TI , ,
keys and wait for completion of sweep.
(73) Press TI MARKER PEAK SEARCH key and record the MKR A amplitude in
peak search 2 column of table 35.
(74) 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 35.
(75) Calculate the third order intercept using the formula below. Calculated value
will be within the limits specified in the first row of table 35.
Adjusted output level + absolute value/2 = third order intercept
63
