SQ864
GPRS Terminal
14
Sales: +44 (0) 118 967 9000
Fax: +44 (0) 118 976 9020
www.sequoia.co.uk
Rev 2.1.4 Jan 2011
Wireless Technology
Experience The Freedom
10. How to install the terminal
10.1 Power Supply
•
Use a high-quality power supply cable with low
resistance. This ensures that the voltages at the
connector pins are within the specified range, especially
during the maximum peak current of approximately 2A.
•
When the unit is powered from a battery or a high
current supply, connect a fast 1.25A fuse in line with
the positive supply. This protects the power cabling and
terminal from damage.
10.2 Securing the modem
Before securing the terminal please take into account the amount
of additional space required for the mating connectors and cables
that will be used with the terminal in the application.
•
Where access is restricted, it may be easier to connect
all the cables to the modem prior to securing it in the
application.
•
Securely attach the SQ864-GPRS terminal to the host
application using two 3mm diameter pan-head screws
11. Safety and Product Care
Please see the information in this section and in section 8
“Terminal installation considerations” before you begin your
system integration.
11.1 General precautions
The SQ864-GPRS terminal is a standalone item designed for indoor
use only. For use outside it must be installed in a weatherproof
enclosure.
Do not exceed the environmental and electrical limits as specified.
•
Avoid exposing the terminal to lit cigarettes, naked
flames or to extreme hot or cold temperatures.
•
Never try to dismantle the modem. There are no
components inside the modem that can be serviced by
the user. If you attempt to dismantle the modem, you will
invalidate the warranty.
•
The SQ864-GPRS terminal must not be installed or
located where the surface temperature of the plastic
case may exceed 85°C.
•
All cables connected to the SQ864-GPRS Terminal must
be secured or clamped, immediately adjacent to the
modem’s connectors, to provide strain relief and to avoid
transmitting excessive vibration to the modem in the
installation.
•
Ensure the power cable to the SQ864-GPRS terminal
does not exceed 3 metres.
•
To protect power supply cables and to meet the fire
safety requirements when the unit is powered from a
battery or a high current supply, connect a fast 1.25A
fuse in line with the positive supply.
•
Do not connect any incompatible component or product
to the SQ864-GPRS terminal.
