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Appendix C: GPS Feature
VTC 7260 Series User Manual
aPPendIx C: GPs feature
Technical SpecificationsuBlox-NEO M8 Overview
The NEO-M8 series of standalone concurrent GNSS modules is built on the
exceptional performance of the u-blox M8 GNSS (GPS, GLONASS, Galileo,
BeiDou, QZSS and SBAS) engine in the industry proven NEO form factor.
The NEO-M8 series provides high sensitivity and minimal acquisition times
while maintaining low system power. The NEO-M8M is optimized for
cost sensitive applications, while NEO-M8N and NEO-M8Q provide best
performance and easier RF integration. The NEO form factor allows easy
migration from previous NEO generations. Sophisticated RF-architecture
and interference suppression ensure maximum performance even in GNSS-
hostile environments.
The NEO-M8 combines a high level of robustness and integration capability
with flexible connectivity options. The future-proof NEO-M8N includes
an internal Flash that allows simple firmware upgrades for supporting
additional GNSS systems. This makes NEO-M8 perfectly suited to industrial
and automotive applications.
The DDC (I
2
C compliant) interface provides connectivity and enables synergies
with most u-blox cellular modules. For RF optimization the NEO-M8N/Q
features an additional front-end LNA for easier antenna integration and a
front-end SAW filter for increased jamming immunity.
u-blox M8 modules use GNSS chips qualified according to AEC-Q100, are
manufactured in ISO/TS 16949 certified sites, and fully tested on a system
level. Qualification tests are performed as stipulated in the ISO16750
standard: “Road vehicles – Environmental conditions and testing for
electrical and electronic equipment”.
Features
Receiver type 72-channel u-blox M8 engine
GPS/QZSS L1 C/A, GLONASS L10F, BeiDou B1
SBAS L1 C/A: WAAS, EGNOS, MSAS
Galileo-ready E1B/C (NEO-M8N)
Nav. update rate
1
Single GNSS: up to 18 Hz
Concurrent GNSS: up to 10 Hz
Position accuracy 2.0 m CEP
NEO-M8N/Q NEO-M8M
Acquisition Cold starts: 26 s 27 s
Aided starts: 2 s 4 s
Reacquisition: 1 s 1 s
Sensitivity Tracking & Nav: –167 dBm –164 dBm
Cold starts: –148 dBm –147 dBm
Hot starts: –156 dBm –156 dBm
Assistance AssistNow GNSS Online
AssistNow GNSS Offline (up to 35 days)
AssistNow Autonomous (up to 6 days)
OMA SUPL & 3GPP compliant
Oscillator TCXO (NEO-M8N/Q),
Crystal (NEO-M8M)
RTC crystal Built-in
Noise figure On-chip LNA (NEO-M8M). Extra LNA for
lowest noise figure (NEO-M8N/Q)
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