HARRIS CORPORATION MBS800B075 用户手册

MM102225V1, Rev. B 

Objective:  The objective of this test is to ensure that the transmit deviation is correctly 
adjusted. 

1. 

Verify that the HPA transmit Enable/ 
Disable switch is set to the Disable 
position for all HPA’s. 

 

2. 

Select the RF GEN screen and set the 
Amplitude field to Off by pressing the 
ON/OFF / (YES) key. 

 

3. 

Select the AF Analyzer Screen on the 
HP 8920 and configure the following 
parameters: 

•  Set AF Analyzer to “FM Demod” 
•  Set the Detector to “Pk+ - /2” 
•  Set FM Deviation to Ave 10 

Samples. 

 

4. 

Set the following configuration 
parameters on the RF Analyzer screen: 

Tune Mode: 

Auto 

Tune Frequency:  Set for the RF path 

under test. 

Input Port: 

RF In 

Sensitivity: Normal 

IF Filter: 

230KHz 

 

5. 

Set the HPA Enable/Disable switch to 
the Enable position. 

 

6. 

The measured value of FM Deviation 
should be 3.0 kHz ±150 Hz for the 
channel under test. Measure and record 
the indicated FM Deviation on the 
recorded data sheet

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. 

 

7. 

Disable the HPA. 

 

8. 

Repeat for each RF path. 

 

                                                           

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 Refer to APPENDIX L - RECORDED DATA SHEET.