Product Overview

The Iridium 9522b 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 26 Pin IDC Connector
• AT Command Set for Command, Control and Configuration of the Modem
• SMA RF Connector
• SMA RF Connector for GPS Pass Through – Allowing dual mode antenna
• 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 9522b 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 9522b also provides direct modem to modem connectivity, allowing one modem to call another directly without terrestrial network connectivity. This allows remote 9522b’s to call (or to be called) directly via a bank of 9522b’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 9522b can be used to extend a PSTN dial-up application into locations where PSTN connectivity or GSM coverage is not available. The 9522b 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 9522b 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 connected 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 9522b 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 (exc. antenna connector) 162mm (6.38″)
• Width 81 mm (3.16″)
• Depth 28 mm (1.10″)
• Weight (approx.) 420 g (0.93lbs)

Environmental Specifications

• Operating Temperature Range -30C to +60C
• Operating Humidity Range 25 to 75% RH
• Storage Temperature Range -40C to +85C
• Storage Humidity Range < 93% 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 +32 Vdc
• Main Input Voltage – Nominal 5, 12, 24 Vdc
• Main Input Voltage – Ripple 40mVpp

Max Current (During Call)

• 2.5A at 5 Vdc
• Power Average: 4W (approx.)

Link Margin

• Configuration: 9522b
• 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 9522b 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.