Comtech-ef-data PCB-4000 Instrukcja Użytkownika Pobierz pdf (Strona 38)

PCB-4000 1+1 Phase Combiner Revision 2

Installation, Startup, and Troubleshooting Procedures MN/PCB4000.IOM

3–10

Step Task

Make sure the lock nut on the phase shifter is tightly secured by using the supplied socket, then replace the

cover panel.

3.7 System Online and Transmitting

Thisprocedure assumesthatthe systeminstallation iscomplete andthataccess tothesystem

outputportisunavailableduetocurrentsystemtraffic.



To check for proper operation, measure and compare the difference in power transmi tted

versusthepowerdissipated intheloadtermination.



Followthesesteps:



Step Task

A. Attach a power meter to the Combined System Output Power Test Coupler (Figure 3-1).

B. Measure the output power and include the coupler correction factor.

A. Attach a power meter to the Wasted (“Load”) Power Test Coupler (Figure3-1).

B. Measure the power and include the coupler correction factor.

The Wasted (“Load”) power level should be 15-20 dB below the power being transmitted to the

antenna.



1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 87 88

Brak uwag

Comtech-ef-data PCB-4000 Instrukcja Użytkownika Strona 38