4-12 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Section 4 Theory of Operation
Maxiva ULX COFDM Series
The RF detector inputs on the back of the RF Detector/Pump Control/Interlocks card
are given in Table 4-3.
Table 4-3 Detector Inputs on RF Detector/Pump Control/Interlocks Card
Pin Signal Description
1 CAB FWD Cabinet forward sample from directional
coupler DC1 at combiner output.
2 CAB REF Cabinet reflected sample from directional
coupler DC1 at combiner output.
3 SYS FWD System forward sample from customer I/)
board J16 at top of transmitter.
4 SYS REFL System reflected sample from customer I/O
board J16 at top of transmitter
5 REJ 1 Reject sample from on customer I/O board J19
at top of transmitter
6 REJ 2 Reject sample from on customer I/O board J20
at top of transmitter
7 REJ 3 Reject sample from on customer I/O board J21
at top of transmitter