Hubbel RFL PLC Hybrid Pro, Руководство пользователя

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RF-MCHYBRIDPRO-01
Hubbell Power Systems, Inc. – RFL™ Products
June 2019 34 973.334.3100
TX
SK
LINE
Signal In
50-ohm
dummy load
RX
Hybrid port internally
terminated (when J4 = IN)
To FSVM /
high-impedance input
Figure 43 – Measuring Skewed Hybrid Isolation, TX to RX
5.3 Testing the Splitter
Although the splitter adds no loss to the PLC channel when connected end-to-end, it will have some
loss characteristics when analyzed by itself. There are two parameters which must be checked to verify
correct operation: insertion loss and phase relationship of the outputs.
Table 11 – Splitter Loss Characteristics
Splitter Loss Characteristics
Insertion Loss
IN to LINE 1 ~3.5 dB
IN to LINE 2
~3.5 dB
Phase Relationship LINE 1 to LINE 2 180°
LINE 1
SPL
IN
Signal In
50-ohm
dummy load
LINE 2
To FSVM /
50-ohm termination
Figure 44 – Measuring Splitter Insertion Loss, IN to LINE 1