© 2009 Cypress Solutions
Complete Manual: CTM-15X Firmware 1.2.0
(Revision 1.0)
14
1BInstalling Your Modem
2.2
Connecting the Power Cable
The power cable has three wires:
Red +V supply (+9 to +36VDC)
Black 0V return
White Standby (+V for operation, Off for standby)
A 5 Amp “slow-
blow” fuse is recommended in the +V supply line.
The operate/standby switch may, for example, be the accessory position on a vehicle ignition switch. In
order to minimize the acquisition time of the GPS module in the CTM-15x at power on, it is recommended
to keep the +V supply connected – this will provide the “keep-
alive” power required by the GPS module
to maintain its internal almanac.
2.3
Connecting the Ethernet Cable
Plug one end of a standard Ethernet patch cable into the CTM
-
15x Ethernet port, and the other end into
the LAN device, PC or Ethernet peripheral. The Ethernet port is compatible with 10Base
-T or 100Base-T
connection types.
2.4
Mounting and Attaching the Cell Antenna
The antenna used with the CTM-15x must be a type suitable for operation on the network for which the
modem is activated. For CDM
A/EV
-
DO/GPRS/HSPA networks this is typically a dual band 800 Mhz and
1900 Mhz antenna.
For optimum performance the antenna should be mounted in a vertical orientation as high up as possible
and with clear line of sight in all directions. For regulatory purposes it must be mounted in such a position
as to maintain a separation distance from any person of at least 20cm (8”).