FOBOEM Telemetry system
DS-FOBOEM-2
Range Considerations
The antenna choice and position directly affects the system range, keep it clear of any large
metal parts. The best position is protruding vertically from the top of the product. This is of-
ten not desirable for practical reasons and thus a compromise may be needed. Note that the
space around the antenna is as important as the antenna itself. All radio systems are depend-
ent on a radio signal being received through airspace.
The range quoted is the optimal in direct line of sight without obstacles and in good
atmospheric conditions.
Range is affected by many things, for example local environmental conditions, atmospheric
conditions, interference from other radio transmitters. For evaluating the local environment
please see our RF Meter (DS006).
In very worse case applications the range quoted may be reduced dramatically below the opti-
mal range stated.
Self Test Mode
ZPT module incorporates a self test which is initiated by applying power with the learn button
held down.
The module then performs the following functions:
1.
All outputs operate in turn ON/OFF twice
2.
All outputs flash ON/OFF 5 times - 1&3 and then 2&4
3.
Transmits a full power RF signal for 5 seconds while flashing the learn LED
4.
Enters RSSI (Received Signal Strength Indication) mode where outputs 1-4 are activated
as a bar graph type output according to the strength of a valid RF signal received (from
any carrier operating at the appropriate frequency (869.50MHz). 4 Outputs on being
maximum strength.
5.
To exit RSSI mode cycle power to the module.
6.
A power cycle reset is required to exit
