Iridium Certus 9770 User manual

Release Date:
November 13, 2019
Revision:
This document contains “Technical Data”, as defined under the Export Administration Regulations (EAR) (15
CFR Part 772) and, as such, may not be exported, disclosed, or otherwise transferred to any non-“U.S. Person”
as defined under the EAR (15 CFR Part 772) without the prior written authorization of the U.S. Government and
review/approval from Iridium’s Director, Compliance & Security.
Iridium CertusTM 9770
User Guide
PRELIMINARY DOCUMENTATION

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IR3142-ICD-006 Issue 1 v2.1 Page 2 of 16
LEGAL DISCLAIMER AND CONDITIONS OF USE
This document is provided "AS IS." Reasonable effort has been made to make the information in this
document reliable and consistent with other specifications, test measurements and other information.
However, Iridium Communications Inc. and its affiliated companies, directors, officers, employees, agents,
trustees or consultants ("Iridium") assume no responsibility for any typographical, technical, content or other
inaccuracies in this document. Iridium reserves the right in its sole discretion and without notice to you to
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Export Compliance Information
This Product/Service is controlled by the export laws and regulations of the United States of America. The
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destinations. Diversion contrary to U.S. law is prohibited.

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IR3142-ICD-006 Issue 1 v2.1 Page 3 of 16
Revision History
Version
Date
Description
V0.3
November 21, 2019
Original Release
Approvals
CCR #
Issue
CCB
Date

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Table of Contents
Revision History.................................................................................................................. 3
Approvals ............................................................................................................................ 3
1Introduction.................................................................................................................. 6
1.1 Intended Audience.................................................................................................... 6
1.2 Beta VAM................................................................................................................. 6
1.3 Reference Documents.............................................................................................. 7
1.4 Abbreviations............................................................................................................ 7
2Digital Interface............................................................................................................ 7
2.1 Digital Connector...................................................................................................... 7
2.2 Pin Locations............................................................................................................ 7
2.3 Pinout Descriptions................................................................................................... 7
2.4 Digital Input/Outputs................................................................................................. 7
2.5 Power Supply ........................................................................................................... 7
2.6 Power Consumption ................................................................................................. 8
2.7 Power On Control..................................................................................................... 8
2.8 Power Off Control..................................................................................................... 8
2.9 Phantom Powering ................................................................................................... 8
2.10 Serial Ports............................................................................................................... 8
2.11 Digital Audio Interface............................................................................................... 8
2.12 SIM Interface............................................................................................................ 8
2.13 Sleep Enabled Mode ................................................................................................ 8
2.14 Transmit Indicator..................................................................................................... 8
2.15 Diagnostic Interface.................................................................................................. 8
3RF Interface.................................................................................................................. 8
3.1 RF Connector Type.................................................................................................. 8
3.2 General RF Specifications........................................................................................ 8
3.3 Conducted RF Outputs............................................................................................. 8
3.4 Conductive RF Inputs............................................................................................... 9
3.5 RF Cable Loss.......................................................................................................... 9
3.6 RF Cable Considerations.......................................................................................... 9
3.7 Antenna Specifications............................................................................................. 9

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4Mechanical Specifications........................................................................................... 9
4.1 Size and Mass.......................................................................................................... 9
4.2 Enclosure Material.................................................................................................. 10
4.3 Mechanical Drawing ............................................................................................... 11
4.4 Mounting Considerations........................................................................................ 12
4.5 Grounding............................................................................................................... 12
4.6 Thermal Management............................................................................................. 12
5Environmental............................................................................................................ 13
6Regulatory Approvals................................................................................................ 14

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1 Introduction
The Iridium CertusTM 9770 is a transceiver designed to be used inside a Value-Added
Manufacturer (VAM) product as per Figure 1-1 below. The Iridium Certus 9770 provides satellite
messaging, IP data and voice connectivity using Iridium’s NEXT satellite constellation. Iridium’s
satellite services using the Iridium Certus 9770 are provided by Iridium Certus Service Providers
(SP) to end users.
This document describes hardware specifications for the Iridium Certus 9770 including
•Digital interfaces for connecting to VAM Electronics
•RF interfaces to a VAM furnished antenna
•Mechanical specifications for housing the transceiver in a VAM product
•Environmental specifications relating to VAM use cases
Figure 1-1 : Hardware Interface Overview
1.1 Intended Audience
This document is intended to be used by a VAM that is building products incorporating the Iridium
Certus 9770. This document focuses on hardware aspects relating to the integration of the Iridium
Certus 9770 into a VAM product.
VAM Product
Digital Interface
VAM
Electronics Iridium Certus
9770 Iridium
Gateway
RF Interface

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1.2 Abbreviations
Name
Description
CE
Conformité Européene
DTMF
Dual Tone Multi Frequency
FCC
Federal Communications Commission
GPIO
General Purpose Input/Outputs
GND
Ground
IC
Industry Canada
RH
Relative Humidity
SD card
Secure Digital (a non-volatile memory card)
SP
Service Provider
SPI
Serial Parallel Interface
UART
Universal Asynchronous Receiver Transmitter
VAM
Value-Added Manufacturer
VSWR
Voltage Standing Wave Ratio
2 Digital Interface
The digital interface to the Iridium Certus 9770 consists of the following interfaces:
•Four UARTs
•UART_A: Command and control functionality
•UART_B: Transfer of user data
•UART_C: Reserved
•UART_D: Reserved
•I²S bus for transfer of digital audio samples used in voice calls
•SPI bus for Iridium diagnostics to assist VAM troubleshooting
•Several GPIO lines for status and control
•Power input
•Ground return
•SIM card interface
2.1 Power Supply
The Iridium Certus 9770 transceiver has a single voltage power supply input (EXT_PWR).

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EXT_PWR accepts input voltages of +12 VDC +/- 2.5 V with an input ripple less than 40 mV peak-
to-peak. The maximum operational input current for the Iridium Certus 9770 in stable operation is
1.5 A.
Note: For safety compliance the external power source should meet requirements of IEC 62368-
1 classes ES1 & PS2.
3 RF Interface
The Iridium Certus 9770 has a dedicated RF connector that provides a connection to an external
passive antenna.
3.1 RF Connector Type
The Iridium Certus 9770 has a right-angle jack, MMCX 50-ohm RF connector (Samtec part
number MMCX-J-P-H-RA-TH1). The RF connector is located on the opposite end of the
transceiver from the digital connector.
3.2 General RF Specifications
The general RF interface requirements for the Iridium Certus 9770 are summarized in Table 3.2-1
below. All radiated values assume a compliant antenna and cable system (see Reference 4).
Parameter
Value
Frequency Range
1616 MHz to 1626.5 MHz
Transmit Frequency Range
1616 MHz to 1626 MHz
Receive Frequency Range
1616 MHz to 1626.5 MHz
Duplexing Method
TDMA (Time Division Multiple Access)
Input / Output Impedance
50 Ω
Modulation
QPSK, DEQPSK
Maximum Average EIRP
9 dBW
Maximum Peak EIRP
15 dBW
Transmit RF Burst Duration
8.2 ms
Table 3.2-1: General RF Parameters
3.3 Conducted RF Outputs
The Iridium Certus 9770 RF output power at its connector varies during normal operating
conditions as it is subject to dynamic transmitter power control by the Iridium® network. As such,
the conducted RF power average (measured at the RF connector) across the burst may range
between +24 dBm and +40 dBm, dependingon the signaltype, link conditions and dynamic power

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IR3142-ICD-006 Issue 1 v2.1 Page 9 of 16
control level. Conducted RF peak power may be up to 6 dB higher than the average RF power
measured over a transmit burst.
3.4 Conductive RF Inputs
The absolute maximum RF input into the Iridium Certus 9770 should not exceed +5 dBm;
otherwise, damage to the Iridium Certus 9770 is possible.
3.5 RF Cable Considerations
For safety reasons, the RF connector on the Iridium Certus 9770 should not be directly connected
to an external antenna cable or cable distribution system.
EN60950-1:2006 safety standard requires that users are protected against high voltages that
might appear on these cables. This can be achieved either by inserting a high voltage isolating
capacitor in series with the signal or by grounding the shield of the coaxial cable. The Iridium
Certus 9770’s RF connector has limited voltage capacity; therefore, protection needs to be
provided by a VAM product. Developers are encouraged to review the EN60950-1:2006 standard
for additional details.
3.6 Antenna Specifications
The Iridium Certus 9770 requires the VAM to provide a matched RF load consisting of an antenna
and RF cable. The RF path specifications including in and out of band VSWR requirements for
the combined supplied RF cable and antenna are specified in Reference 4. The Certus 9770
should be used with an Iridium compliant antenna with a gain that does not exceed +3.0dBi.
4 Mechanical Specifications
The following section describes the mechanical specification for the Iridium Certus 9770.
Figure 4-1: Iridium Certus 9770 Front and Back Views
4.1 Size and Mass

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The Iridium Certus 9770 overall dimensions are 140.2 mm X 60.0 mm X 16.3 mm and its mass is
185 g.
4.2 Enclosure Material
The enclosure material is an Aluminum Alloy ADC10 with a RoHs Compliant Chromate
Conversion coating.

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4.3 Mechanical Drawing
Figure 4.3-1 below shows the mechanical dimensions of the Iridium Certus 9770. CAD files for
the Iridium Certus 9770 are also available in STEP and Parasolid files as per References 2 and
3 respectively.
Figure 4.3-1: Iridium Certus 9770 Mechanical Drawing

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4.4 Mounting Considerations
The Iridium Certus 9770 has six mounting holes with clearance for M3 screws that can be used
to secure the transceiver to a VAM product. The Iridium Certus 9770 should be assembled into a
VAM product by pushing the transceiver straight down onto a VAM product’s mating connector,
ensuring not to rotate or twist the transceiver.
The mechanical drawings in section 4.3 define a keep-out region. VAM product components
should not be placed inside this keep out area which has allowances for reasonable
manufacturing and assembly variations.
4.5 Grounding
Ground pins on the Iridium Certus 9770 digital connector are the intendedreturn path for all return
currents. As such, although the Iridium Certus 9770’s metal enclosure is also electrically
connected to a ground, it is recommended that all high current ground returns only flow through
the ground pins on the digital connector.
4.6 Thermal Management
The Iridium Certus 9770 has an aluminum die cast enclosure which provides a passive thermal
heat sink path that is designed to conduct, connect and/or radiate heat from its bottom surface to
a VAM product. Figure 4.6-1 illustrates the location on the Iridium Certus 9770’s power amplifier
where the dominate heat is generated. At a minimum, it is recommended that heat sinks on a
VAM productcontact theIridium Certus 9770 at this location. Depending ona VAM product design
and use case scenarios, larger heat sink contact zones may be required.
Figure 4.6-1: Primary Heat Source location
A VAM product is responsible for dissipating enough heat from the Iridium Certus 9770 into the

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ambient environment to ensure that both the Iridium Certus 9770’s ambient and case temperature
does not exceed the temperatures in Table 4.6-1. If the Iridium Certus 9770 gets too hot, its
thermal protection circuitry can shut the transceiver off and put it into a fault mode. Once the
Iridium Certus 9770 enters a fault mode, a reset or power up is required to recover. Reference 1
describes how to read the status of internal temperature sensors and the notifications that are
generated if the Iridium Certus 9770 goes into fault mode.
Parameter
Value
Maximum Case Temperature
75 ºC
Maximum Ambient Temperature
70 ºC
Table 4.6-1: Thermal Management Temperature Specifications
When transmitting or when ambient temperatures exceed 60 degrees C, the Iridium
Certus 9770’s caseworks can be hot to the touch. Avoid direct contact with the
transceiver in order to avoid burns.
5 Environmental
The environmental specifications for the Iridium Certus 9770 are summarized in Table 5-1 below.
Parameter
Value
Operating Temperature Range
-40 ºC to + 70 ºC
Operating Humidity Range
≤ 95% RH
Storage Temperature Range
-40 ºC to + 85 ºC
Storage Humidity Range
≤ 93% RH
Operational Vibration
0.02 g²/Hz from 10 Hz to 40 Hz,
40 Hz to 500 Hz dropping 6dB per octave
0.96 m²/s³ from 5 Hz to 20 Hz,
21 Hz to 500 Hz dropping 3 dB per octave
Shock
10 G peak shock over a period of 11 ms,
3 shocks in 3 perpendicular orientations
Table 5-1: Environmental Specifications

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6 Regulatory Approvals
The Iridium CertusTM 9770 Transceiver is a regulatory approved module that can be fitted within an
enclosed host system. With appropriate external connections, the host system can be designed to meet
full transceiver regulatory tests and sold as a Regulatory Certified product that meets CE, FCC and IC
requirements.
The Iridium CertusTM 9770 is tested to the regulatory and technical certifications shown in Table 2 (See
Note below).
The Iridium CertusTM 9770 is certified as a module for non-portable applications –i.e. those that do not
combine the Iridium CertusTM 9770 with another radio element and have an intended separation distance
of over 30 cm from a person. The OEM integrator is responsible for ensuring that their end-product
complies with additional compliance requirements required with this module installed, such as digital
device/unintentional emissions requirements and any additional potential RF exposure requirements,
such as portable use or co-location requirements.
Table 2: 9770 Regulatory and Technical Certifications.
Regulatory
Approvals
Radio Tests
EMC Tests
Electrical / Mechanical /
Operational Safety Tests
EU (RED)
ETSI EN 301 441 V2.1.1
(2016-06)
ETSI EN 301 489-1 V2.2.1
(2019-03)
ETSI EN 301 489-20 V2.1.1
(2019-04)
IEC 62638-1:2014
EN 50665: 2017
FCC
FCC 47 CFR Part 2: 2018
FCC 47 CFR Part 25: 2018
FCC 47 CFR Part 15B: 2018
Industry
Canada
RSS170 Issue 3 (2015-07)
ISEDC RSS-GEN Issue 5 + A1
(2019-03)
ISEDC RSS-GEN Issue 5 + A1
(2019-03)
6.1 Unauthorised Changes
Iridium has not approved any changes or modifications to this device by the user. Any changes or
modifications could void the user’s authority to operate the equipment.
Iridium n’approuve aucune modification apportée à l’appareil par l’utilisateur, quelle qu’en soit la nature.
Tout changement ou modification peuvent annuler le droit d’utilisation de l’appareil par l’utilisateur.

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6.2 Radio Interference
This device complies with Part 15 of the FCC Rules and Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this
device must accept any interference, including interference that may cause undesired operation of the
device.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a
type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce
potential radio interference to other users, the antenna type and its gain should be so chosen that
the equivalent isotropically radiated power (EIRP) is not more than that necessary for successful
communication.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner
avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par
Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des
autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (PIRE) ne dépasse pas l'intensité nécessaire à l'établissement d'une
communication satisfaisante.
6.3 RF Exposure
This equipment complies with FCC and IC radiation exposure limits set forth for an uncontrolled
environment. The antenna should be installed and operated with minimum distance of 30 cm between the
radiator and your body. Antenna gain must be below: 3.0 dBi. This transmitter must not be co-located or
operating in conjunction with any other antenna or transmitter.
Cet appareil est conforme aux limites d'exposition aux rayonnements de la IC pour un environnement non
contrôlé. L'antenne doit être installé de façon à garder une distance minimale de 30 centimètres entre la
source de rayonnements et votre corps. Gain de l'antenne doit être ci-dessous: 3.0 dBi. L'émetteur ne doit
pas être colocalisé ni fonctionner conjointement avec à autre antenne ou autre émetteur.
6.4 FCC Class B Digital Device Notice
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be

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IR3142-ICD-006 Issue 1 v2.1 Page 16 of 16
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
6.5 Labelling Requirements for the Host device
The host device shall be properly labelled to identify the modules within the host device. The certification
label of the module shall be clearly visible at all times when installed in the host device, otherwise the host
device must be labelled to display the FCC ID and IC of the module, preceded by the words "Contains
transmitter module", or the word "Contains", or similar wording expressing the same meaning, as follows:
Contains FCC ID: Q639770 or Contains transmitter module FCC ID: Q639770
Contains IC: 4629A-9770 or Contains transmitter module IC: 4629A-9770
L'appareil hôte doit être étiqueté comme il faut pour permettre l'identification des modules qui s'y trouvent.
L'étiquette de certification du module donné doit être posée sur l'appareil hôte à un endroit bien en vue en
tout temps. En l'absence d'étiquette, l'appareil hôte doit porter une étiquette donnant le FCC ID et le IC du
module, précédé des mots « Contient un module d'émission », du mot « Contient » ou d'une formulation
similaire exprimant le même sens, comme suit:
Contains FCC ID: Q639770 or Contains transmitter module FCC ID: Q639770
Contains IC: 4629A-9770 or Contains transmitter module IC: 4629A-9770
6.6 CAN ICES-3 (B) / NMB-3 (B)
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de classe B est conforme à la norme canadienne ICES-003.
6.7 Simplified EU Declaration of Conformity
Iridium Satellite LLC hereby declares that the radio equipment Iridium CertusTM 9770 Transceiver complies
with Directive 2014/53/EU. The full text of the EU declarations of conformity is available at the following
internet address: www.iridium.com under partner resources.