Delta OHM HD35AP series, Operating Manual

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HD35
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sion. If the device doesn’t belong to a wireless network or the base unit cannot be reached, the
second beep of the buzzer is not emitted and the red RF LED will blink.
If the device is connected, by pressing the connection button for 5 seconds the buzzer emits a
beep, the red RF LED activates for one second and the device is disconnected.
PING function:
In the devices connected to a wireless network it is possible to check if the base unit can be
reached by briefly pressing the connection button: if the green RF LED is blinking, it means
that the base unit is reachable, otherwise it will be the red RF LED to blink.
7.5 A
RRANGEMENT OF THE REPEATERS
Designing the system it should be taken into account that between a HD35REW repeater and a
HD35ED... data logger or between two HD35REW repeaters, only HD35REW repeaters can be
interposed, as shown in following examples.
Fig. 7.5.1: arrangement of different types of repeaters
Unlike HD35RE repeaters, which have external power supply, the HD35REW repeaters are
powered only by the internal battery. To extend the battery life, the RF stage of the HD35REW
repeaters is not continuously active; therefore, the HD35REW repeaters are subject to the fol-
lowing restrictions:
o
the alarm events may be reported with a certain delay;
o
the adding of new devices to the wireless network must be done near the HD35AP.. base
unit, without interposing HD35REW repeaters between the new devices and the base unit;
o
the reconfiguration of the system may take longer; furthermore, if the configuration of a
data logger with LCD is changed via the logger keyboard, the change is not notified to the
base unit and to the HD35AP-S software;
o
to guarantee the same transmission reliability of a system with HD35RE repeaters,
HD35ED… devices may be obliged to transmit the same packets several times: this could
affect battery life.