Harris CZ1000F, Руководство по вводу в эксплуатацию

Страница: 105 / 162

12/24/07 888-2685-001 4-15
WARNING: Disconnect primary power prior to servicing.
Section 4 RF Testing
Ranger Commissioning Manual
4.2.13.4 Out of Band Emissions Procedure
Step Procedure Description Expected Observation
1 Configure the transmitter to operate
on air with Exciter A with
precorrector settings to:
Non-Linear Precorrection = ADAPT
Linear Precorrection = ADAPT
Then connect the spectrum analyzer
to the transmitter output of the
bandpass filter. RF Spectrum output should be
clean.
2 Configure the spectrum analyzer as
follows:
Start Frequency = 698 MHz
Stop Frequency = 715.9 MHz
Resolution BW = 100 KHz
Video BW = 300 Hz
Sweep = Auto
Sweep Points = 10001(number of
points in sweep)
Amplitude Reference Level = 10 dB
Amplitude Attenuation = 30 dB
Then measure 698–715.9 MHz with
Exciter A on air. Less than -38 dBm/100 kHz
3 Change the following spectrum
analyzer settings:
Start Frequency = 722.1 MHz
Stop Frequency = 746 MHz.
Then measure 722.1–746 MHz with
Exciter A on air. Less than -38 dBm/100 kHz
4 Change the following spectrum
analyzer settings:
RBW = 30 Khz
Start Frequency = 715.9 MHz
Stop Frequency = 716 MHz.
Then measure 715.9-716 MHz with
Exciter A on air. Less than -38 dBm/30 kHz