Specifications

PART 2 – Cellular SocketModems Chapter 6 – SocketModem iCell EV-DO
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342P) 106
Application Notes
LED Interface
The LED signal is used to indicate the working status of the SocketModem.
LED 1 – Heartbeat LED – Available for -IP and -GP Builds
LED 1 Signal
Heartbeat LED
OFF
No power to the unit
Blinking
Power on
LED 2 – Link Status – Available for All Builds
LED 2 Signal
Link Status LED
OFF
No power to the unit
Continuously Lit
Powered and connected, but not transmitting or receiving
Slow Blink (-0.2 Hz)
Powered and searching for a connection
Faster Blink (-3 Hz)
Transmitting or receiving
LED 3 – Signal Strength – Available for -IP and -GP Builds
LED 3 Signal
Signal Strength LED
OFF
No signal
Blinking
The faster the LED blinks, the stronger the signal. The
range for the blink rate is from -0.5Hz to -10Hz.
LED 4 – GPS Status – Available for -GP Build
LED 4 Signal
GPS Status LED
OFF
No power to the unit
Continuously Lit
Satellite not acquired
Blinking
Satellite acquired
RF Interface
Radio Characteristics
CDMA 800
CDMA 1900
Frequency RX
869 to 894 MHz
1930 to 1990 MHz
Frequency TX
824 to 849 MHz
1850 to 1910 MHz
Impedance
50 ohms
VSWR
<2
Typical Radiated Gain
0 dBi in at least one direction
Output Power
.25W in CDMA
RF Connection and Antenna
The RF connector on the SocketModem is a UFL standard type. See Chapter 1 for Antenna System details.