[time-nuts] M12M Sensitivity

Art Sepin art at synergy-gps.com
Tue Feb 22 19:18:22 UTC 2011


Steve,

The short answer to the question of M12M GPS receiver sensitivity is:

Min acquisition signal level = -128 dBm (at module connector) 
Min track signal level = -135 dBm (at module connector) 
Max track signal level = -30 dBm (at module connector) 

The background is that the sensitivity figures for the Motorola M12+ and

the later Motorola designed M12M being produced by iLotus were never
published for some reason (they were also not included in the PVT-6,
Basic Oncore, VP Oncore or UT+ Oncore User's Guides). In place of
sensitivity figures, the respective User's Guides included a page headed
"Antenna System RF Parameter Considerations." In the case of the M12M
User's Guide, available at http://www.synergy-gps.com, refer to page 66.
I'm mentioning this because there is a mistake on page 66 which
erroneously lists M12M gain range as 18 - 36 dB (which is the M12+
spec). The actual gain range for the M12M is 10 - 50 dB (which is shown
correctly on the M12M datasheet).

In an effort to avoid blatant commercialism, the new iLotus TX Oncore 
timing module, available in late March, has the following published
sensitivity figures:

Min acquisition signal level = -146 dBm (at module connector) 
Min track signal level = -159 dBm (at module connector)
(Max track level not published)

The TX Oncore datasheet, found on our web site, includes Motorola binary
Emulation for popular timing commands.
http://www.synergy-gps.com/index.php?option=com_content&task=view&id=188
&Itemid=116
Please contact me off-list for any discussions of commercial interest -
Thanks!

Art Sepin
Art @ Synergy-gps.com


 

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Martyn Smith
Sent: Tuesday, February 22, 2011 7:22 AM
To: time-nuts at febo.com
Subject: [time-nuts] M12M Sensitivity

Hi,

I'm looking for the sensitivity specification of the Synergy M12M GPS
receiver.

Has anyone data on this.  I can't find it in any brochure or manual.

Regards

Steve



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