Performance Verification
RTX100A ISDB-T RF Signal Generator Service Manual
3-23
24.
Set the spectrum analyzer settings as indicated below:
CENTER FREQ
473.143 MHz
. . . . .
FREQ SPAN
15 MHz
. . . . . . . .
RBW
10 kHz
. . . . . . . . . . . . . .
VBW
300 Hz
. . . . . . . . . . . . . .
SWP Speed
10 s
. . . . . . . . .
REF Level
--30 dBm (None)
. . . . . . . . . .
ATT
0 dB
. . . . . . . . . . . . . . .
Average
10
. . . . . . . . . . . .
25.
Use the delta marker to measure the difference between the marker frequency
set in step 24 and the specified frequency offset of each marker, and verify
that each value meets the condition as follows:
Delta marker--Marker 1 (--2.86 MHz): < --20 dB
Delta marker--Marker 2 (--3.00 MHz): < --27 dB
Delta marker--Marker 3 (--4.36 MHz): < --49 dB
Use the
MASK131.STA
setup file for the measurement.
26.
Change frequency offset of each marker, and verify that each value meets the
condition as follows:
Delta marker--Marker 1 (2.86 MHz): < --20 dB
Delta marker--Marker 2 (3.00 MHz): < --27 dB
Delta marker--Marker 3 (4.36 MHz): < --49 dB
Use the
MASK132.STA
setup file for the measurement.
27.
Change
Center Frequency
to
38
on the RTX100A.
28.
Change the Center Frequency to
623.143 MHz
on the spectrum analyzer.
29.
Repeat steps 25 and 26. Use the
MASK381.STA
and
MASK382.STA
setup
files for the measurement.
30.
Change
Center Frequency
to
62
on the RTX100A.
31.
Change the Center Frequency to
767.143 MHz
on the spectrum analyzer.
32.
Repeat steps 25 and 26. Use the
MASK621.STA
and
MASK622.STA
setup
files for the measurement.
33.
Disconnect the 75
Ω
BNC (Ma)-to-NC(Fe) adapter, 50
Ω
SMA cable, and
50
Ω
N(Ma)-to-SMA(Fe) adapter from the RTX100A and spectrum analyzer.
Содержание RTX100A
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Страница 21: ...Specifications...
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