User's Manual

Any entry in the accept list can also be viewed and deleted. View an entry via:
Codelog > 1)Config > 5)Filters > 1)ID Filter > 5)Set Accept ID > 2)View/Del
The first entry is shown in the first line of the display. To view the next entry, use
the Right Arrow key to advance through the list. An entry in the list can be
deleted at any time by pressing the 1 key [1)Del].
PULSE FI L T E R (S I G N A L Q U AL I T Y )
Four filters are available that pertain to the signal strength and timing
characteristics of pulsed signals: Echo Filter, Noise Threshold, Pulse Width, and
Signal Strength Deviation. All of these filters set pass/fail boundaries based on
selected pulse characteristics.
SE T T I N G AN EC H O FI L T E R
The Echo Filter sets the time in milliseconds after a valid detection, during which
any additional detections are considered to be echos.
This filter was originally provided (in the SRX 400) for use with acoustic
transmitters, where multipath propagation at the speed of sound can cause
mirror reflections of several milliseconds. The Echo Filter provides the ability to
reject pulses when the time interval between two pulses is below the Echo Filter
time. As a result, this feature speeds up the receiver's processing time.
Please contact Lotek Wireless Inc. for details on how to determine an appropriate
Echo Filter time.
SE T T I N G T H E NO I S E TH R E S HO L D
The Noise Threshold is a minimum allowable detection signal strength. This
means that if the receiver detects a pulse that has a signal strength equal to or
less than the noise threshold, it is rejected and not used for further code
processing.