System Online And Transmitting - Comtech EF Data PCB-4000A Installation And Operation Manual

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 transmitted versus
the power dissipated in the load termination.
Follow these steps:
Step
A. Attach a power meter to the Combined Output Test Coupler (Figure 3-1).
1
B. Measure the output power and include the coupler correction factor.
A. Attach a power meter to the Wasted ("Load") Power Test Coupler (Figure 3-1).
2
B. Measure the power and include the coupler correction factor.
3 The Wasted ("Load") power level should be 15-20 dB below the power being transmitted to the antenna.
Operation and Adjustment Procedures
PCB-4000A 1+1 Phase Combiner
Task
3–12
Revision 2
MN-PCB-4000A