TB 9-6625-2155-24
Table 6. Harmonic Distortion Check - Continued
Spectrum analyzer
Test
indication
instrument
(dB)
frequency
Harmonic
maximum ( )
(GHz)
frequency
Harmonic
14
4.6667
.33
-35
14
9.3333
.66
-35
16
5.3333
.33
-35
16
10.6667
.66
-35
18
6
6 GHz Sub
-35
18
12
12 GHz Sub
-35
resolution bandwidth to 10 kHz, and span to 1 MHz.
(10) Using the spectrum analyzer, verify that all non-harmonic spurious signals
are
50 dBc TI frequencies listed in table 7.
Table 7. Non-harmonic Spurious Signal Level
Test instrument frequency
(GHz)
Spurious signal level
2.500 000
< -50 dBc
3.000 000
< -50 dBc
3.500 000
< -50 dBc
4.500 000
< -50 dBc
5.000 000
< -50 dBc
5.500 000
< -50 dBc
6.500 000
< -50 dBc
(11) Reduce all outputs to minimum and disconnect equipment.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Zero and calibrate the measuring receiver power sensor.
(2) Connect TI RF OUTPUT to measuring receiver power sensor.
(3) Press TI keys as listed in (a) through (e) below.
RCL 0.
(a)
Adjust OUTPUT LEVEL for -3 dB.
(b)
ALC INTERNAL on.
(c)
RF OUTPUT on.
(d)
FREQUENCY, 2, GHz.
(e)