Installing Multiple Modulators
• Set up and connect the Modulator to coax network or TV set one at a time.
• Make sure the following parameters between Modulators are different
① RF Output frequency refer to the section Choose Output Frequency for Modulator Output
to configure different output frequencies for different Modulators.
② Program name default program name MX-100R, MX-200 and MX-300 is HD1,
the program naming convention can be HDn, where n indicates the
Modulator count, to avoid confusion.
③ Major channel number and minor channel number can be different among Modulators.
• A combiner or a multiplexer is needed to mix the output signals from multiple Modulators if multiple
TVs are connected to the coax network to share the output signal of Modulators.
• If MX-100R, MX-200 or MX-300 is used together with other brands’ modulators, harmony settings of
RF output (power) level and output frequency must be identified.
• Make a note on each Modulator with RF output level and output frequency for quick reference
and easy trouble shooting whenever needed.
• If more than 20 TVs are connected to share the Modulator output signal, it might be necessary
to use active combiner or amplifier to ensure sufficient power to reach individual TV at the far end.
The receiving power of each TV should be higher than 15dBmV (75
dBµV)
or the signal can be
instable.
• Depending on the quality and aged damage, splitters, combiners and coaxial cable itself can
introduce high attenuation or insertion loss to the coax wiring. Power loss budget calculation
might be necessary along the delivery path to ensure the best performance of the Modulator.
In case multiple units of MX-100R, MX-200 and MX-300 modulators are installed on the same coax
network/wiring to connect to the same TVs, pay attention to the following items to avoid conflicts
or interference among Modulators.
8
MX-100R, MX-200 and MX-300 HD Modulator
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