MetriCorr
VL100 & MasterLink Operation Manual
36 | 45
6.1
Satellite modem & placement
The installed modem used for satellite communication is the model “Ro” produced by
“RockBLOCK”
, which communicates via the satellite network operator
“Iridium”.
It is important to place the satellite junction box with unblocked access to the sky. We refer to the
guidelines from “RockBLOCK’s” website:
https://docs.rockblock.rock7.com/docs/mounting
”
Selecting a mounting location
Iridium operates in the microwave L-band and therefore requires line-of-sight communication
between RockBLOCK and the satellites.
Don't install RockBLOCK inside a building.
Unlike GSM networks, the microwave L-band can't penetrate solid objects.
Operating RockBLOCK through windows not recommended.
Apart from causing long session timeouts, windows with UV protection films will also
block the signal.
Comply with RF exposure limits.
We don't recommend installing RockBLOCK within 20 cm of a person.
Typically, the best installation location will be on top of an asset, with a 360 degree view of the
sky. Because Iridium satellites are always moving, with a sensible retry strategy it is possible to
achieve good performance even with quite a restricted view of the sky.
“
6.2
Power & LED indicators
The satellite modem is powered from the 12V
battery via a DIN-rail mounted relay with a
green LED indicating when the satellite
modem is connected to the 12V battery.
The relay is controlled by the MasterLink,
which is connected directly to the 12V
battery.
