Specifications

PART 2 – Cellular SocketModems Chapter 7 – SocketModem Cell & iCell HSPA (H3)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342P) 118
Application Notes
LED Interface
The LED signal is used to indicate the working status of the SocketModem.
LED 1 – Heartbeat LED – Available for -IP Builds
LED 1 Signal
Heartbeat LED
OFF
No power to the unit
Blinking
Power on
LED 2 – Link Status
LED 2 Signal
Link Status LED
OFF
No power to the unit
Continuously Lit
Radio is enabled
RF Performances
RF performances are compliant with the ETSI recommendation 05.05 and 11.10.
The main parameters are:
Receiver Features
• EGSM Sensitivity: < -108 dBm
• GSM 1800/GSM 1900 Sensitivity: < -107 dBm
• Selectivity @ 200 kHz: > +9 dBc
• Selectivity @ 400 kHz: > +41 dBc
• Dynamic range: 62 dB
• Intermodulation: > -43 dBm
• Co-channel rejection: + 9 dBc
Transmitter Features
• Maximum output power (EGSM): 24 dBm ± 2 dB
• Maximum output power (DCS/PCS): 30 dBm ± 2 dB
• Minimum output power (EGSM): 5 dBm ± 5 dB
• Minimum output power (DCS/PCS): 0 dBm ± 5 dB
• H2 level: < -30 dBm
• H3 level: < -30 dBm
• Noise in 925 - 935 MHz: < -67 dBm
• Noise in 935 - 960 MHz: < -79 dBm
• Noise in 1805 - 1880 MHz: < -71 dBm
• Phase error at peak power: < 5 ° RMS
• Frequency error: ± 0.1 ppm max