Datasheet

ZED-F9T-Data sheet
QZSS can be enabled only if GPS operation is also configured.
1.4.2 Satellite based augmentation system (SBAS)
The ZED-F9T timing module supports SBAS (including WAAS in the US, EGNOS in Europe, MSAS
in Japan and GAGAN in India) to deliver improved location accuracy within the regions covered.
However, the additional inter-standard time calibration step used during SBAS reception results in
degraded time accuracy overall.
SBAS reception is disabled by default in ZED-F9T.
1.4.3 Differential timing mode
To improve timing accuracy locally, the ZED-F9T can be used in differential timing mode, in which
correction data is exchanged with other neighboring ZED-F9T timing receivers via a communication
network.
In differential timing mode ZED-F9T can operate either as a master reference station generating
the following RTCM 3.3 output messages, or as a slave station receiving the following RTCM 3.3
input messages:
Message type Description
RTCM 1005 Stationary RTK reference station ARP
RTCM 1077 GPS MSM7
RTCM 1087 GLONASS MSM7
RTCM 1097 Galileo MSM7
RTCM 1127 BeiDou MSM7
RTCM 1230 GLONASS code-phase biases
RTCM 4072.1 Additional reference station information (u-blox proprietary RTCM Message)
Table 6: Supported RTCM 3.3 messages
1.5 Broadcast navigation data and satellite signal
measurements
The ZED-F9T can output all the GNSS broadcast data upon reception from tracked satellites. This
includes all the supported GNSS signals plus the augmentation services QZSS and SBAS. The UBX-
RXM-SFRBX message is used for this information. The receiver also makes available the tracked
satellite signal information, i.e. raw code phase and Doppler measurements, in a form aligned to the
Radio Resource LCS Protocol (RRLP) [3]. For the UBX-RXM-SFRBX message specification, see the
u-blox ZED-F9T Interface description [2].
1.5.1 Carrier-phase measurements
The ZED-F9T modules provide raw carrier-phase data for all supported signals, along with
pseudorange, Doppler and measurement quality information. The data contained in the UBX-RXM-
RAWX message follows the conventions of a multi-GNSS RINEX 3 observation file. For the UBX-
RXM-RAWX message specification, see the u-blox ZED-F9T Interface description [2].
Raw measurement data are available once the receiver has established data bit
synchronization and time-of-week.
1.6 Supported protocols
The ZED-F9T supports the following protocols:
UBX-18053713 - R06
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1 Functional description Page 6 of 23
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