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Section 6
Page 81
8990cm.fm Modem
4. Select either pulse or tone dialing modes. This will depend on the type of
phone service selected for the site phone line. Press
ACCEPT.
5. Enter a phone number using the numeric keypad. This phone number is
used by the modem when it sends an alarm report to a personal
computer running InSight
software.
6.2.2.1 Cellular Communication Option
Note: To ensure reliable
communications between the
sampler and the host computer, it is
required that the host computer is
equipped with a Cellular Compatible
modem, it must support the
MNP.10EC protocol. Computers
equipped with modems that do not
support this protocol are able to
connect to the sampler but will not
be able to maintain a reliable
connection.
This option couples the sampler to an external, 3-watt, cellular phone. The
cellular phone is mounted in a NEMA 4X enclosure and is powered through
the sampler by the sampler power supply. Enabling Modem Power also
provides power to the Cellular Communication via a connector cable.
The cellular phone is set to activate upon an alarm. Additionally, the end user
can use the phone to make cellular voice calls directly from the installation site
as needed.
Site Selection
The quality and availability of cellular service varies considerably from one
geographical location and from day to day. Factors that affect the quality of
cellular service include but are not limited to: weather, time of day, distance to
the nearest cell tower, other cellular traffic, etc.
Installation and Setup
Note: If the display on the cell
phone is not present, check to make
sure the cell phone power is
enabled in the setup of the sampler.
Also check to make sure that the
sampler is connected to a power
source and is turned on.
1. Connect the four conductor cable between the four pin connector on the
side of the cellular phone housing and to the connector in the side of the
sampler case labeled MODEM. This cable supplies both the data and the
12 V dc power for the cell modem.
2. Attach the magnetic base cell phone antenna to any flat metal object in
the immediate area. For optimum performance, mount the antenna in a
vertical position.
Note: Mount the antenna as high and as far away from the sampler as possible. RF
power radiated during transmission by the cell phone antenna in close proximity to
the sampler may have adverse affects on data measurements.
3. When necessary, reposition the antenna to obtain optimum signal
strength.
11:00 AM 21 - APR - 01 MODEM SETUP
ACCEPT
CHANGE
CHOICE
DIAL METHOD:
CANCEL
TONE
CHOICES: TONE, PULSE
11:00 AM 21 - APR - 01 MODEM SETUP
ACCEPT
CHANGE
CHOICE
INPUT CHANNEL:
CANCEL
FLOW
(USE NUMERIC KEYPAD)