Important Information:

The ONAIR LED show the following indications:
      > Green = HDMI signal is valid and OnAIR
      > Red Flashing = No Valid HDMI input signal connected
      > Green/Red Flashing = Unit is being controlled remotely via Web Interface

IF YOU USE A COAX AMPLIFIER
READ THIS FIRST:

Otherwise, skip this section.

if you combine multiple Micromod 3+ SDI

 then feed an amplified splitter,
and when you connect more than one minimod all channels stop working
This is typically caused by the combined signal being too strong for the amplifier's input.

Solution-1:
On the Micromod 3+ SDI COLOR DISPLAY
MAIN MENU>CHANNEL SETUP > RF OUT LEVEL
Reduce the RF output level on every MINIMOD to the minimum setting.
This will reduce the MIXED signal of all Micromod 3+ SDI to your Amplifier
preventing signal distortion.
If needed use a Coaxial attenuator connector of 10 decibels between the mixed Micromod 3+ SDI and the coaxial amplifier input

Solution-2:
ByPass your amplifier and go direct from the combined Micromod 3+ SDI to the TVs.
The Micromod 3+ SDI signal is already very strong and usually does not require an amplifier.

Solution-3:
Try using HIGHER FREQUENCIES, starting from 500 Mhz up for your Micromod 3+ SDI
This often resolves compatibility issues with older combiners.
You can use higher-frequency channels while still setting your MAJOR/MINOR numbers (e.g., 1, 2, 3) for the TV remote.
The RF frequency and the displayed channel number are independent settings.
You can always set the TV program number with MAJOR/MINOR numbers on the
Micromod 3+ SDI MAIN MENU > CHANNEL SETUP > MAJOR Number & MINOR number

To merge multiple Micromod 3+ SDI over the same coaxial each must be set to a different channel so they do not Jam each other

Click here for how to set the Micromod 3+ SDI channels