GT864-3G Terminal Product Description
80269ST10071a Rev.0 - 14/09/0
9
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 12 of 41
2.6 Power Supply
2.6.1 Supply voltage requirements
The DC power supply must be connected to the POWER input:
•
Input voltage range
5 - 32V DC
•
Nominal Voltage 12V 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 > 1s.
VCC and GND are reverse-polarity and over-voltage protected. Please note: this does not apply for
the GND on the antenna connector if this coax GND/shield are connected to your applications
ground-plane.
The measurement was realised by 4 different Voltages (5 V, 12V, 24 V and 32 V).
GT864-3G
@ 5V
@12V
@ 24V
@ 32V
Terminal switched off
1
60
μ
A
150
μ
A
308
μ
A
415
μ
A
On, network connection (Idle
mode)
2
27mA
10mA
6mA
5mA
On, network connection (Idle
mode)
3
40mA
15mA
9mA
7mA
NOTE
: In case that power supply equipment is to be ordered, its conformity needs to be verified
with the mains supply voltage, frequency, connector type and other national requirements (e.g.
certifications) in the countries of its use.
2.6.2 Power Connector
An RJ11 6-way connector, as shown and described below, serves as a means of supplying and
controlling DC power to the modem.
1
Off means: GT864 powered via VCC; switched off via HR_IN, DTR low
2
high impedance RS232
3
impedance 4,7k
Ω
