2.Electrical Description
All electrical connections to the TT4031
The modem uses the following industry standard connectors:
RJ11 6-way (power connector)
RJ9 4-way (handset connector)
SIM card reader
FME male coaxial jack (antenna connector)
2.1Power Connector
An RJ11
The supply voltage, VCC, required by the modem is in the range 5 V - 32 V d.c. Application of the supply voltage does not switch the modem on. To do so an additional
A second
TO_IN and HR_IN are referenced to GND (pin 6 on the connector). VCC and GND are reverse polarity and overvoltage protected
Owner’s Manual | Rev 1.0 | Page 29 of 29 |