YSI MIQ/Blue PS Set - Manual (Page 22)

Installation MIQ/Blue PS
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Radio link check list For safe operation of a radio link, check the system with the following
check list.
The following checklist supports you when planning, projecting and
installing a radio link with the MIQ/Blue PS radio modules.
For smooth operation, you should be able to answer all questions with
"Yes".
Note
Interferences are possible also with short radio links if the radio signal
is reflected by walls that are outside the direct radio link. Due to reflec-
tions, radio signals may reach the receiver alleviated or several times.
In this case, changing the location of a MIQ/Blue PS module only
slightly can improve the transmission.
Radio link check list:
1 Is there direct visual contact between the antennas of both
MIQ/Blue PS modules at any time (e.g. with installation on
moving scraper bridges)?
2 Is the radio link free from permanent disturbances? Examples:
– Obstacles (such as buildings, windows, etc.)
– Shielding (such as a metal or PVC canopy)
3 Is the radio link free from temporary disturbances? Examples:
– Regular temporary disturbances (e.g. center support or
mounting stand, with installation on a moving scraper
bridge)
– Irregular temporary disturbances (e.g. vehicles or persons
crossing the radio link)
4 Are the antennas of the MIQ/Blue PS modules free of water,
snow, ice?
5 When using a canopy:
Is the SSH/IQ plastic canopy used
(no metal or PVC canopy)?
6 Are the antennas in the original condition (e.g. no antenna ex-
tension cable)?
7 Was the range test carried out with attenuator?
8 With installation on a moving scraper bridge:
Was the range test carried out for a complete rotation of the
scraper bridge?
9 Is the distance between 2 MIQ/Blue PS masters (for several ra-
dio links) at least 50 m?
10 Is the distance between 2 MIQ/Blue PS slaveS (for several ra-
dio links) at least 2 m?