HARRIS CORPORATION MBS800B075 用户手册

MM102225V1, Rev. B 

9. 

Press the Enter key on the laptop 
keyboard. 

The status information on the right will 
be displayed on the PC console 
application. Similar to the text found on 
the right. 

Example: buck40:

14

 

buck40-bs1> 

 

 

10. 

Enter the command: 

 

at@hpapowerN [CR] 

Example: Where N is the desired HPA 
power setting to overcome rack losses. 

11. 

Set the HPA Disable/Enable switch to 
Enable. 

 

12. 

The HPA will send the message shown 
on the right via the DCX to the console 
display and start transmitting. 

HPA> RF enabled by front panel switch. 

 

13. 

Compare the measured value TX Power 
on the HP 8920 to the desired level, 
repeating steps 10-12 as necessary to 
fine-tune the measured level to set the 
prescribed Site ERP. 

Note:  There may be a slight variation 
between the commanded and measured 
power levels.  This may be due to test cable 
losses. Be sure to factor these into the 
measurement process. 

Example: 

Output Power 

43dBm 

Test Cable Loss 

-.8dB 

HP 8920 Reading 

42.2dBm 

14. 

When the final value for TX Power is 
achieved, enter the commands on the 
right. 

save_config [CR] 

reboot [CR] 

15. 

After the DCX has completed its boot 
cycle record the final measured HPA TX 
Power level on the collection sheet and 
data sheet

15

. 

 

16. 

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

 

17. 

Repeat for each RF channel, leaving 
tested HPA’s in the DISABLED mode. 

 

                                                           

14

 "Buck40", where used in this manual, is only an example of the applicable code. 

15

 Refer to APPENDIX L - RECORDED DATA SHEET.