Copyright 2Touch Technologies Limited 2007-2008. All rights reserved.
Installing the Calibration Switch
A calibration switch may be placed at the desired user location. A momentary
action (momentarily closed) switch is required, preferably push button.
Depending on user preferences, the following switches have proven popular:
Jaycar SP0716
Jaycar SP0710
Jaycar SP0755
Jaycar SP0780
Pushbutton PUSH-
ON MOMENTARY
SPST RED
ACTUATOR
Rated 3A 250V
AC.Mounting hole
12mm
Red Miniature
Pushbutton -
SPST Momentary
Action
Push On
Red Button125V 3A
rating
Metal Momentary SPST
- Silver Metal body
- Rated 8A @ 125VAC or 4A
VAC
- Momentary action SPST
- 19mm mounting hole
- Screw terminal termination
Bell Pushbutton
N.O. contacts- Size
60(L) x 32(W) x
12(D)mm.- Fawn
in colour.
The loom with calibration wiring emerges from the rear of the board
approximately 800mm from top left corner of board (facing the front). The
loom provides for 1.2m cable length. If more is required in order to reach the
intended switch location, you will need to provide a length of dual-core cable
to suit. This can be connected by soldering or using connector blocks.
Connecting the switch to the loom involves removing the redundant plastic
connector from the end of the loom, and wiring the switch to the blue and the
black wires from the loom. (The other two wires are redundant and can be
cut short and insulated from each other). When the black and the blue wires
are shorted together by the switch, calibration mode will launch on the board.
The location for the calibration switch is most commonly one of the following:
•
Top of iwb (usually top left corner), provided that user can reach the
switch position. This renders the switch less likely to be erroneously
pressed or targeted by students or visitors. In this case, either mount
switch 710 through one of the IWB mounting brackets such that it is
positioned behind the board and operated vertically, or alternatively
select an enclosed swich such s 780 above and adhere these to any
flat surface.
•
Front panel of speaker on 2Touch Audio 014 model. In this case, drill
12mm mounting hole through the front facia of speaker in lower
recess, and fit easily switch 716 through from rear.
•
Wall panel: Switches 710 or 755 can easily be integrated into the
2Touch wall panels.
•
On IWB face: Switch 755 can be integrated into the IWB trim itself, on
a custom build basis provided that this is identified to the factory with
your order (extra costs may apply).
