Instruction Manual

ground plane A ground plane is an electrically conductive plate that acts as a ‘mirror’ for the antenna, effectively
doubling the length of the antenna. When using a 1/4 wave antenna, the ground plane acts to ‘double’
the antenna length to a 1/2 wave antenna.
heartbeat mode In heartbeat mode, the Nodes send "heartbeat" messages to the Gateway at specific intervals to
indicate the radio link is active. The heartbeat is always initiated by the Node and is used only to verify
radio communications. Using the Nodes to notify the Gateway that the radio link is active instead of
having the Gateway "poll" the Nodes saves energy and increases battery life.
I am here
hibernation/
storage mode
While in storage mode, the radio does not operate. All Sure Cross
®
radios powered from an integrated
battery ship from the factory in storage mode to conserve the battery. To wake the device, press and
hold button 1 for 5 seconds. To put any Flex Power
®
or integrated battery Sure Cross radio into storage
mode, press and hold button 1 for 5 seconds. The radio is in storage mode when the LEDs stop
blinking, but in some models, the LCD remains on for an additional minute after the radio enters storage
mode. After a device has entered storage mode, you must wait 1 minute before waking it.
For the Wireless Q45 and Q120 Sensors: While in storage mode, the Gateway or Node's radio does not
operate. The Gateway or Node ships from the factory in storage mode to conserve the battery. To wake
the device, press and hold the binding button (inside the housing on the radio board) for
five seconds.
To put any Gateway or Node into storage mode, press and hold the binding button for five seconds. The
Gateway or Node is in storage mode when the LEDs stop blinking.
hop As a verb, hopping is the act of changing from one frequency to another. As a noun, a hop is the device
to device transmission link, such as from the Master device to the Slave device.
hop table A hop table is a precalculated, pseudo-random list of frequencies used by both the transmitter and
receiver of a radio to create a hopping sequence.
hysteresis Hysteresis defines how far below the active threshold (ON point) an analog input is required to be before
the input is considered OFF. A typical hysteresis value is 10% to 20% of the unit’s range. For more
specific details, see Threshold .
Threshold
ON point
Time
Input Value
Input
Hysteresis
OFF point
Industrial,
Scientific, and
Medical Band
(ISM)
The ISM, or Industrial, Scientific, and Medical band, is the part of the radio spectrum that does not
require a license for use. The Sure Cross radios operate in the ISM band.
latency A network's latency is the maximum delay between transmission and reception of a data signal.
lightning
arrestor
Also called a lightning suppressor, surge suppressor, or coaxial surge protection, lightning arrestors are
used in remote antenna installations to protect the radio equipment from damage resulting from a
lightning strike. Lightning arrestors are typically mounted close to the ground to minimize the grounding
distance.
Sure Cross
®
Performance DX80 Wireless I/O Networks
62 www.bannerengineering.com - Tel: + 1 888 373 6767