Owner's Manual

GDX-350 Sensor Transmitter
P/N: 5600-9001 Rev 2 41
Menu Item Description
Hop Channel
May be set from 1-32 and assigns the pseudo-random radio frequency hopping
pattern. A transceiver will not go In Range of or communicate with a transceiver
operating on a different Hop Channel. Different hop channels can be used to
prevent radios in one network from listening t
o transmissions of another.
Installations having more than one Server network should also have different hop
channels for each network.
2.4GHZ variation: Hop channels on 2.4 GHZ models may be set between 0 and
39. Hop channels 0-19 includes EU “low band” frequencies 2406 – 2435MHZ.
Hop channels 20-39 includes EU “high band” frequencies 2444 – 2472MHZ.
Remote ID
IMPORTANT!! EXPLORE WHAT FREQUENCIES ARE APPROPRIATE FOR THE
FINAL LOCATION OF ANY WIRELESS SYSTEM.
May be set from 1-255 and acts as the “RTU” address for this particular GDX-350.
Controller channels receiving this monitor’s data must also be configured with this
matching Remote ID address.
System ID
May be set from 1-255 and is similar to a password character or network number
and makes network eavesdropping more difficult. A transceiver will not go In Range
of or communicate with a transceiver operating on a different System ID.
TX Multiples
Allows up to 5 consecutive repeats of EVERY transmission. The default setting of 1
should only be increased if there is no other way to improve communications
success. Power consumption increases with radio transmissions and battery life will
be affected by raising the TX Multiples setting.
*RF
Handshaking
Affects the way RF transmissions are made by the GDX-350. This menu may be set
for OFF (default) or ON. OFF requires no acknowledge from the receiving server.
ON should be used only when transmitting to a single receiving server (such as a
GDA-400 or GDA-1600 Controller). Since ON creates an “acknowledg
e” hand
shake returned from the receiver, only one receiver is allowed to avoid data
collisions of the “acknowledge” signal. If an “acknowledge” is not received by the
GDX-350 it transmits repeatedly up to 16 times. RF HANDSHAKING = OFF may be
used for any application but is required when transmitting to a Server
and
TX Power
other
receiver Client radios. RF HANDSHAKING = ON always transmits the packet 4
times and does not require any “acknowledge” returned by the receivers.
(900MHZ models only) May be set for 10 mW, 200mW, 400mW and 1 watt. Since
GDX-350s are battery powered the TX Power setting should be as low as possible
to sustain reliable communication. The maximum TX Power setting is 30db (1 watt)
and each time TX power is reduced by half, antenna transmit power is reduced by
3dB.
2.4GHZ variation
TX Verbose
: The TX Power menu is not available in 2.4GHZ models and
is fixed at 50mW.
Unavailable for firmware revisions 3.09 and earlier.
Wakeup Time
Menu is new to firmware revision 3.09 and determines how often the radio is
activated WHEN THERE IS NOT AN A1 or A2 LEVEL ALARM. The default value is
300 seconds (5 minutes) but this may be reduced to as low as 6 seconds. Intervals
are rounded up to the nearest 6 seconds regardless of the menu entry (example: 50
second entry transmits every 54 seconds).
IMPORTANT: More frequent RF transmissions deplete the battery
faster!