Circuit Protection; Antenna; Table 2 - Enabler Ii-G Pin Assignments - Enfora Enabler II-G Integration Manual

Integration Guide
Version 1.01
50 Ground
51 Serial Transmit Data
52 SIM I/O
53 Request To Send
54 SIM Reset
55 Clear To Send
56 ADC1
57 Data Terminal Ready
58 SIM Power
59 Ground
60 Ground

Table 2 - Enabler II-G Pin Assignments

I=Input into Enabler; O=Output from Enabler; P=Power Input to Enabler; R=Power Return from Enabler;
I/O=Input/Output into/from Enabler
Reserved for future use
NO CONNECT if on-board SIM holder is used

6.6 Circuit Protection

Other than the basic low level ESD protection within the module's integrated circuits (typically 2000 V), the
Enabler II-G does not have any protection against ESD events or other excursions that exceed the specified
operating parameters.
The only exception is that the remote SIM lines on the main I/O connector do have additional ESD protection
that should handle standard human-model contact ESD events.
Generally, ESD protection (typically TVS/Transzorb devices) should be added to all signals that leave the
host board. This includes V
Series resistors (typically 47 Ω) can also be added in series with data lines to limit the peak current during a
voltage excursion.
Caution – It is the Integrator's responsibility to protect
!
the Enabler II-G from electrical disturbances and
excursions that exceed the specified operating
parameters.

6.7 Antenna

A custom tri-band antenna can be attached via the on-board connector or soldered directly to the modem.
Each antenna direct connect solder pad is 1.02 x 2.54 MM.
6.7.1 Antenna Solder Pads
Pads are provided to solder a cable or antenna directly to the Enabler II-G board.
GSM0108PB001
R GND
3 I TXD_RADIO
I/O SIM_IO
7 I RTS_RADIO
O SIM_RST
8 O CTS_Radio
I ADC1
4 I DTR_RADIO
O SIM_VCC
R GND
R GND
/V .
BAT CC
Page 25
Electrical power return for digital and analog grounds.
Serial Data from Host.
SIM I/O Data.
RTS Signal from Host.
SIM Reset.
CTS Signal to Host.
Analog-to-Digital Converter Input 1.
0 – 1.75 Vdc range. 1.709 mV resolution. 10 bit.
DTR Signal to Host.
SIM Power.
Electrical power return for digital and analog grounds.
Electrical power return for digital and analog grounds.
1.01 – 01/21/05