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*) Separation of the IP frequency range by and from the terrestrial antenna and other downstream multi-switches is performed by the screwed-on
EXI 90 high-pass fi lter
**) Separation of the IP frequency range by and from the terrestrial antenna and other downstream multi-switches is performed here by the integral
high-pass fi lter within the EXI 3508
Problem
Possible cause
Solution
“Coax/Link” LED
does not light up
No coax connection
Ensure the coaxial cables are
connected without any short circuits
“Coax/Link” LED
does not light up
Damping between the modems
is too high
Check whether the selected port on
the RF outlet/multi-switch supports
the frequency range 5-68 MHz
“Coax/Link” LED
does not light up
No pairing
The modem has not yet been assigned
a valid network key. Perform the
relevant points during commissioning
Possible causes of faults, and their remedies
**)
*)
*)
