DISCONTINUED - JANUARY 2009. Please Use Iridium 9522b

Product Overview

The Iridium 9522a provides data connectivity through asynchronous data and direct Internet connections. Connections supported are modem to modem, modem to PSTN user, PSTN user to modem and modem to Internet.

The following are key features of the modem module.

• RS-232 Serial Interface via DB-25 Connector
• # AT Command Set for Command, Control and Configuration of the Modem
• TNC RF Connector
• Remote Control of Module Power
• Integral SIM Card Reader
• Power Connector

Asynchronous Data

When providing async data services, the modem can be interfaced directly into existing applications currently using PSTN or GSM modems. The modem provides full duplex connectivity at a data rate of 2400 bps. The 9522a supports both Modem to PSTN/GSM connections and Modem to Modem connectivity.

Full ‘Hayes’ AT command set support allows existing applications to be easily interfaced to the modem.

Modem to modem

The 9522a also provides direct modem to modem connectivity, allowing one modem to call another directly without terrestrial network connectivity. this allows remote 9522a’s to call (or to be called) directly via a bank of 9522a’s located at the customer’s premises. It provides a secure independent communications network, removing any reliance on the existing terrestrial infrastructure.

Modem to PSTN

A 9522a can be used to extend a PSTN dial-up application into locations where PSTN connectivity or GSM coverage is not available. The 9522a can dial directly to PSTN/GSM numbers or it can wait in ‘auto-answer’ mode to receive calls from PSTN/GSM as required.

Direct Internet Connectivity

The 9522a can be configured to provide a direct connection to the Internet at 2400bps without having to dial an existing ISP via PSTN. to access the Internet the modem dials a specific access number. Once the terminal is connect it allows the full suite of IP protocols to be used including WWW, FTP, SMTP and Telnet. Direct Internet connectivity allows customer applications to update web pages for tracking / logging applications, or update servers via e-mail, or file transfers directly via the Internet.

Standards Compliance

The 9522a has been designed to comply with the stands for Emissions Compliance, 47 CHR Part 25 as FCC ID: IHDT6NJ1 and also complies with Part 15 of the FCC Rules. Operation is subject to the condition that the device does not cause harmful interference. Any changes or modifications, including the use of a non-standard antenna, not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

IMPORTANT: To comply with FCC RF exposure requirements, a minimum separation of 20 cm is required between the antenna and all person.

Specifications

Mechanical Specifications

• Length (inc. antenna connector) 216.1 mm (8.51″)
• Length (exc. antenna connector) 196.4 mm (7.73″)
• Width 82.6 mm (3.25″)
• Depth 39.0 mm (1.54″)
• Weight (approx.) 610 g

Environmental Specifications

• Operating Temperature Range -20C to +60C
• Operating Humidity Range 85% RH
• Storage Temperature Range -40C to +85C
• Storage Humidity Range 85% RH

General RF Parameters

• Frequency Range 1616 to 1626.5 MHz
• Duplexing Method TDD (Time Domain Duplex)
• Oscillator Stability 1.5ppm
• Input / Output Impedance 50 Ohm
• Multiplexing Method TDHM/FDMA

DC Power Input Specifications

• Main Input Voltage – Range +4.0 to +4.8 Vdc
• Main Input Voltage – Nominal 4.4Vdc
• Main Input Voltage – Ripple 40mVpp

Power Consumption @ +4.4V DC

• Idle: 0.5W (approx.)
• Average: 4W (approx.)
• Transmit: 6W (peak)

Link Margin

• Configuration: 9522a
• Cable Loss: 3 dB Max.
• Link Margin: 12.1 dB
• Module with Motorola accessory antennas

Analog Audio Interface Signal Descriptions

• Signal Name – Signal Description
• MIC_AUD – Analog audio input
• SPKR_AUD – Analog audio output
• ANALOG_AUD_EN – Analog audio enable input
• ANALOG_GND – Analog audio gnd level signal ref.

Control / Audio Interface Signal Descriptions

The control / audio interface enables peripherals such as handsets and SIM card readers to be interfaced to the unit. The interface utilises a Motorola Proprietary full duplex communication bus not detailed in this fact sheet. Details can be made available after appropriate Non-disclosure Agreements and / or License Agreements are executed.

RS232 Data Signal Descriptions

The RS232 data interface is comprised of eight standard RS232 data, control, and status signals plus a ground level signal reference. This interface allows a connected Data Terminal Equipment (DTE) to utilise the modem functionality via AT command control.

SIM Interface

An integrated SIM chip connector is provided on the modem. An external SIM card reader may also be interfaced as a peripheral to the 9522a via the DSC bus of the control / audio interface. A SIM card in the external reader will take precedence over the SIM chip in the integrated connector when both are present.