contention
architecture
Contention architecture is a wireless communication architecture that allows all network devices access
to the communications channel at the same time. This may lead to transmission collisions.
counter - event
The event counter counts the total number of times an input signal changes to the high/ON/1 state. The
counter increments on the falling edge of an input signal when the signal level crosses the threshold.
Event counters can be used to measure the total operational cycles of a spinning shaft or the total
number of items traveling down a conveyor.
counter -
frequency
The frequency counter calculates the frequency of the input signal, in Hz.
Frequency counters can be used to measure flow rates, such as measuring the flow rate of items on a
conveyor or the speed at which a windmill spins.
courtesy power
outputs
Courtesy power outputs provide continuous power and cannot be turned on or off.
cyclic reporting
Cyclic reporting is when the Gateway polls the Node at user-defined intervals.
It is time to
report
data
debounce
When a signal changes state using a mechanical switch or relay, the signal can oscillate briefly before
stabilizing to the new state. The debounce filter examines the signal’s transitions to determine the
signal’s state.
The signal oscillates between states after a mechanical switch
or relay activates.
Without a debounce filter, the signal is interpreted to change
state multiple times.
With a debounce filter, the signal is interpreted to change state
only once.
The factory default setting is to activate the input filtering to compensate for unclean state transitions.
decibel
A decibel is a logarithmic ratio between a specific value and a base value of the same unit of measure.
With respect to radio power, dBm is a ratio of power relative to 1 milliWatt. According to the following
equation, 1 mW corresponds to 0 dBm.
Equation: PmW = 10
x/10
where x is the transmitted power in dBm, or dBm = 10 log(PmW)
Another decibel rating, dBi, is defined as an antenna’s forward gain compared to an idealized isotropic
antenna. Typically, dBm = dBi = dBd + 2.15 where dBi refers to an isotropic decibel, dBd is a dipole
decibel, and dBm is relative to milliwatts.
deep sleep
mode
Potted Puck models, potted M-GAGE models: Some battery-powered M-GAGE radios ship in a "deep
sleep" mode to conserve battery power. While in "deep sleep" mode, the M-GAGE does not attempt to
transmit to a parent radio and remains in "deep sleep" until an LED light at the receiving window wakes
it up. M-GAGEs that ship in "deep sleep" mode are typically the potted M-GAGEs that require an LED
Optical Commissioning Device to configure the M-GAGE.
Wireless Q45 Sensors: If the Wireless Q45 Sensor fails to communicate with the Gateway for more than
5 minutes, it enters
sleep mode
. The radio continues to search for the Gateway at a slower rate and the
LEDs do not blink. To wake up the sensor, press any button. After the Q45 wakes up, it will do a fast
rate search for the Gateway for five more minutes.
Sure Cross
®
DXM150 and 1500-Bx Wireless Controllers
www.bannerengineering.com - Tel: + 1 888 373 6767
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