Hubbel RFL PLC Hybrid Pro, User Manual

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RF-MCHYBRIDPRO-01
Hubbell Power Systems, Inc. – RFL™ Products
June 2019 35 973.334.3100
LINE 1
SPL
IN
Signal In
180-degree phase
separation between
LINE 1 and LINE 2
LINE 2
Figure 45 – Measuring Splitter Output Phase Angle Relationship, LINE 1 to LINE 2
5.4 Testing the Splitter/Combiner
The splitter/combiner has three parameters which must be checked to verify correct operation: insertion
loss, isolation, and phase relationship.
Table 12 – Splitter/Combiner Characteristics
Splitter/Combiner Characteristics
Insertion Loss
IN 1 to LINE 1 ~6.5 dB
IN 1 to LINE 2 ~6.5 dB
IN 2 to LINE 1 ~6.5 dB
IN 2 to LINE 2 ~6.5 dB
Isolation (trans-hybrid loss)
IN 1 to IN 2 ~20 dB
IN 2 to IN 1 ~20 dB
Phase Relationship
IN 1 to LINE 1 0°
IN 1 to LINE 2 180°
IN 2 to LINE 1 180°
IN 2 to LINE 2 0°
To FSVM /
50-ohm termination
IN 1
SPL/COM
IN 2
LINE 1
LINE 2
50-ohm
dummy load
Signal In
50-ohm
dummy load
Figure 46 – Measuring Splitter/Combiner Insertion Loss, IN 1 to LINE 2