APG LPU-2127 user manual - Manual (Page 16)

LPU-2127 Rev. A5, 1/14
16
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Utilities (Continued)
MODE DESCRIPTION PARAMETERS
14 Blanking Units = Determined by Mode 1
Range = 0.5 -16 ft.
Default = 1.00 ft.
Mode 14 sets the blanking distance. The blanking distance is the zone from
the sensor to a point where the first echo will be accepted. Because of the
physical properties of an ultrasonic sensor, objects cannot be detected closer
than approximately 1 foot from the face of the transducer. This distance varies
according to how much energy is being transmitted (Mode 5) and the
installation. Low pulses and soft mounting may allow target detection as close
as 6 inches. The blanking distance can also be used to ignore unwanted targets
close to the sensor such as welds, seams, pipe fittings, or gaskets.
MODE DESCRIPTION PARAMETERS
15 Pulses Range = 1-20
Default = 16
Mode 15 sets the maximum number of pulses the sensor can transmit when
operating in AutoSense or simply the number of pulses when operating in
manual (Mode 12). The LPU emits a burst of pulses and measures the time it
takes for the burst to travel to and from the target. The more pulses that are
sent in a burst, the stronger the returning echo. When operating in manual
mode, increase the strength of the transmission by increasing the number of
pulses for detecting soft targets in damping environments. In acoustically
active environments or small enclosed areas, decrease the number of pulses to
decrease the energy transmitted and reduce multiple echoes.
MODE DESCRIPTION
16 Software Version
Mode 16 displays the software version of the LPU.
MODE DESCRIPTION
17 Reset
Mode 17 resets the LPU to factory default settings