2-25
External Serial Controller An external serial controller is the best choice for many integrators for several
reasons:
• No additional cables are required to install the controller. The 30-inch
touchscreen cable is routed through the rear of the di splay case to a 2x6 male
connector located on the rear of the controller. Once the contr oller is inst alle d
on the rear of the display, little or none of the touchscreen cable is visible.
• The base of the controller may be permanently attached to the rear of the
display, but is easily removed from the display if necessary.
• The serial cable is permanently connected to the controller and features an
armored, moisture-resistant sleeve w here the cable enters the contro ller
enclosure.
• An external serial controller offers the added flexibility of using a keyboard
tap or wall-mount power supply (See “Elo Part Numbers” on page79) if
using an internal power source is inconvenient or impractical. This feature
places fewer constraints on the design and location of kiosks and other
applications.
Follow these steps to install the IntelliTouch external serial controller:
1Determine supply power source to the controller. The controller requires +5
Vdc regulated power (± 0.25 Vdc) with 100 mA typical. Average power
dissipation is 0.7 W.
CAUTION
Before making any attempt to power the controller from any mo nitor power source, you
should confirm the installation with your monitor supplier. Failure to observe this caution
may destroy the monitor or seriously impair monitor performance.
• Provided you first confirm the installation with your monitor supplier, you
may attach a direct power cable to a +5 Vdc source inside the display or tap
unregulated monitor power in the +9 Vdc to +30 Vdc range using the Elo
DC-to-DC converter (See “Elo Part Numbers” on page79). Typical
converter power consumption is approximately 1 W. Remember that each
integration situation is unique; you must carefully evaluate available power
rails and consider how drawing additional power from the display will affect
monitor performance.
If you have a suitable +5 Vdc power source, attach the direct power cable
harness (See “Elo Part Numbers” on page79) to the source, red to + 5 Vdc
and black to common. You must attach the green ground cable to a suitable
chassis ground for noise immunity and safety considerations. Also ensure
that the cable is long enough to reach the back of the monitor and the
controller.