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FarReach v2.1 (obsolete)

Create a huge presence. Ultrasonically senses distances of objects, persons, walls from 0.15 to 5.5 m (0.49 to 18 ft). Is invisible to the audience. Not suitable for low volume sound installation.

Technical specifications

Product FarReach sensor
Version 2.1 (January 2003)
Sensing parameter distance, proximity
Sensing method ultrasonic (50 KHz pulse burst emitted at 10Hz rate)
Active volume 15° cone
Range 0.15 to 5.5 m (0.49 to 18 ft)
Precision 0.1% of output rate
Calibration
m ft Voltage (use 5 V power supply) 7-bit MIDI value (use 'no processing' editor preset)
0.15 0.49 0.00 0
5.5 18 4.72 120
Operating temperature -30° to 70° C (-22° to 158° F), 5 % to 95 % relative humidity
Power supply 5 V DC, 20 mA
Sensor dimensions 61 x 59 x 26 mm (2.4 x 2.3 x 1.0 inch)
Weight 150 g (5.3 oz), incl. cable
Cable 5.0 m (16 ft), shielded, red wire = power, uninsulated wire = ground, black wire = sensor output
Connector male plug with a row of 3 pins spaced 2.54 mm (0.100 inch)
Application notes
  1. multiple FarReach sensors can be placed adjacently where the spacing is determined by the maximum distance to be measured at which distance the ultrasound emission cones should not overlap
  2. any indirect echoes of the ultrasonic pulse (eg. from the sidewalls in a narrow corridor) may generate incorrect sensor output values
  3. not suitable for low volume sound installations due to ultrasonic pulse which is audible as a click
  4. do not connect the FarReach plug reversely to the Digitizer, because it might blow the fuse in the Digitizer !
Application examples distance measurement relative to a wall or presence detection of objects and persons (it cannot detect the number of people present)

This page was updated on Saturday 15 January 2011.
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