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Septentrio, GNSS timing, GNSS module, mosaic t



Septentrio mosaic-TTM is a multi-band, multi-constellation GNSS timing receiver designed specifically for providing the highest security and availability for critical infrastructure and other applications where resilient timing is essential. 

Mosaic-TTM is a low power surface-mount module with a wide array of interfaces including a dedicated timing input for time and frequency synchronization. It offers superior availability by tracking all Global Navigation Satellite System constellations (GNSS) and their current and future signals. With unique built-in AIM+ technology for anti-jamming, anti-spoofing and interference mitigation, Septentrio offers a highly resilient and precise timing receiver in a very small form factor.


* Accurate and resilient with dedicated timing features 

* All-in-view satellite tracking: multi-constellation,multi-frequency

* Dedicated inputs for clock and frequency synchronisation

* OSNMA Support 

* Highly secure against jamming and spoofing with AIM+ unique interference mitigation technology

* Industry-leading ultra-low power consumption

* Easy-to-integrate


Top performance without compromises

The best of both worlds: small size with solid performance. Mosaic-TTM offers a high-precision solution for time and frequency synchronization under challenging conditions such as during GNSS jamming or spoofing. It offers unmatched resilience thanks to its all-constellation multi-frequency capabilities and AIM+ technology. 

More compact than ever

Sized at only 31 x 31 x 4 mm and weighing no more than 7g, mosaic-TTM offers unparalleled size to performance ratio. 

Meant for automated assembly

The mosaic-TTM module is designed for high volume automated assembly lines with minimal amount of additional components required. All interfaces, commands and data messages are fully documented. The complete RxTools software suite is also included with mosaic-TTM. It enables quick and easy receiver configuration, data logging and analysis. 

Advanced technologies inside

Septentrio’s GNSS+ toolset enables accuracy and reliability in the toughest conditions with:

* AIM+ the most advanced on-board interference mitigation technology on the market (mitigating both narrow and wide band chirp jammers).

* LOCK+ for robust tracking despite mechanical shocks and vibrations.

* APME+ multipath mitigation to distinguish direct signals from those reflected off nearby structures.

* IONO+ provides advanced protection against ionospheric disturbances.


GNSS technology

448 hardware channels for simultaneous tracking of all visible supported satellite signals:

* GPS: L1C/A, L1PY, L2C, L2PY, L5


* Beidou: B1I, B1C, B2a, B2I, B3

* Galileo: E1, E5a, E5b, E5 AltBoc

* QZSS: L1C/A, L2C, L5 

* NavIC: L5


 SDCM (L1, L5)

Septentrio's patented GNSS+ technologies

* AIM+ interference monitoring and mitigation (narrow band, wide band, chirp jammers)

* IONO+ advanced scintillation mitigation

* APME+ a posteriori multipath estimator for code and phase multipath mitigation

* LOCK+ superior tracking robustness under  heavy mechanical shocks or vibrations

* RAIM+ receiver autonomous integrity  monitoring

OSNMA Support

4 constellations


Septentrio Binary Format (SBF)

NMEA 0183, v2.3, v3.03, V4.0


4 UART (LVTTL, up to 4 Mbps)

Ethernet (RMII/MDIO), 10/100 Mbps

USB device (2.0, HS)

SDIO (mass storage)

2 GPIO user programmable 

2 Event markers

1 Configurable PPS out4

Clock sync input

Frequency sync input (10 MHz)


Time precision

xPPS out4                                                       5 ns

xPPS out with SBAS                              2 ns

Event accuracy                                 < 20 ns

Positioning modes accuracy 1,2

                              Horizontal         Vertical

Standalone                    1.2 m            1.9 m

SBAS                              0.6 m            0.8 m

Velocity accuracy                              3 cm/s

Maximum update rate

Position                                              10 Hz

Latency3                                         <10 ms

Time to first fix

Cold start5                                        < 45 s

Warm start6                                      < 20 s

Re-acquisition                                        1 s

Tracking performance (C/N0 threshold)

Tracking                                        20 dB-Hz

Acquisition                                   33 dB-Hz


Free product lifetime upgrades



Type           SMT solderable land grid array

Size 31 x 31 x 4 mm / 1.29 x 1.29 x 0.15 in

Weight                                 6.8 g / 0.24 oz


Antenna pre-amplification range 15-50 dB

Antenna bias voltage                    3.0-5.5 V

                                           Build-in current 

                                              limit (150 mA)

Input voltage                                  3.3 VDC

Power consumption                     0.6 W typ

                                                    1.1 W max


Operating temp                        -40 to 85° C

                                                -40 to 185° F

Storage temp                           -55 to 85° C

                                                -67 to 185° F

Humidity         5% - 95% (non-condensing)

Vibration                              MIL-STD-810G

Certification CE, RoHS, WEEE, ISO 9001-2015


1 Open sky conditions

2 RMS levels

3 99.9%

4 Incl. software compensation of sawtooth effect

5 No information available (no almanac, no approx  position)

6 Ephemeris and approx. position known

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