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Digilink MK3, USA Mains Version
System Overview
The Scope Digilink MK3 DL10AC and DL5AC are mains powered, programmable radio paging
systems which can be used to transmit data to fixed base stations and/or portable receivers. The unit
is supplied with either 5 or 10 inputs, which can be hardware configured to accept either dry contact
(no voltage) or voltage (5-18V dc) triggers. Each input is pre-programmed as either N/O (Normally
Open), N/C (Normally Closed) or C/S (Change of State). Triggering any of the inputs (zones) will
result in pre-programmed data (including up to 80 characters of text message) being transmitted to
the selected receiver or group of receivers.
The unit can be programmed to repeat transmit (1-5 repeat transmissions or until reset) if required. In
addition, the trigger filter time can be defined between 100 milliseconds and 25 seconds (period for
which the zone must remain in the active state before triggering). One input (IN9) can be configured
as a Reset to clear any current transmission cycles. This can also be used as an "Arm/Disarm" facility
for the alarm inputs. Various other parameters can be programmed to suit specific user requirements.
The Configuration Data sheets accompanying your system will detail how all the various parameters
have been set. It is vital that you retain this information in a safe place as you will need to quote the
unit's serial number in the unlikely event that you experience any problems. You will also need this
information to order more pagers (these must be matched to the identity of your system).
For advanced users who wish to program the unit themselves, a Programming Kit must be
purchased. This provides a Windows based application running on a PC's USB port, allowing all
functions to be programmed and stored in the system's secure non-volatile memory. Full details can
be found in the PT10 Pro Configuration Utility provided on CD with the Programming Kit.
Section 1: Installation
The information contained in this Section is intended for use by authorised system
installation engineers only. Other personnel should not undertake installation of this
equipment under any circumstances.
Siting of the hardware
Before locating the hardware in any given location, it is important to take into account the range of
operation that you require. The standard transmitter can quite easily provide ranges of up to a mile
or more, covering a considerable area with just a quarter wave antenna connected directly to the unit.
For coverage of very large sites, or where exceptionally difficult operating conditions exist, it may be
advantageous to install an external antenna. Installing the transmitter on the second or third floor of
a building will more often than not boost overall range. However, horizontal range is not always
required as much as propagation through a multi-storey building. Here it may be more useful to use
a small external antenna mounted outside the building at half the building height. Sometimes range
is required more in one direction than in the other: moving the aerial to one side of the building can
provide a bias in the required direction, which may overcome the range difficulties. (See section:
Other Antennas).
Important: coaxial feeds which are longer than 5 metres must employ low loss 50 ohm coax. We
normally do not recommend feeds of more than 15 metres for standard applications. However, we
suggest you contact our technical department where other considerations may prove this to be
impractical.
A further consideration that must be taken into account is the length and location of the dry contact
cables. To avoid interference and possible false triggering, cable runs should be kept to a minimum
(ideally less than 10 metres) and should be isolated from other cabling (e.g. mains, telecoms. PC
networks, etc).
DLINKMK3ACUSA
Issue 1
4
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