CEP CT63 User Manual - Page 9

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Electrical Description

The modem uses the following standard connectors:



RJ11 6-way (power connector)



Mini USB (USB 2.0)



SIM card reader



FME male coaxial jack (antenna connector)



Sub-D female socket, 9 pin (RS232 serial port)

An RJ11 6-way connector, as shown and described below, serves as a means of supplying and

controlling DC power to the modem. It is necessary to connect an external power supply, since the

available power on the USB port is not sufficient to run the modem.

The supply voltage, VCC, required by the modem is 5V - 32V DC. Application of the supply voltage does

not switch the modem on. To do so an additional active-high control signal, TO_IN, must be applied for

> 1 second.

Please see chapter "3.1 Switching ON the modem" for further important details about TO_IN and

power supply requirements, especially if TO_IN is applied in parallel to VCC.

VCC and GND are reverse-polarity and over-voltage protected.

This does not apply for the GND on the antenna connector if this coax GND / shield are

connected to your applications ground-plane.

PIN: -> 6

5 4 3 2 1

Figure 4: RJ11 Pin Connector