`
This document contains Iridium Satellite LLC Proprietary Information may which may not be used, reproduced, or
disclosed without written approval from Iridium Satellite LLC.
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 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
