Manual
Table Of Contents
- Title
- Contents
- 1 Integration manual structure
- 2 System description
- 3 Receiver functionality
- 3.1 Receiver configuration
- 3.1.1 Changing the receiver configuration
- 3.1.2 Default GNSS configuration
- 3.1.3 Default interface settings
- 3.1.4 Basic receiver configuration
- 3.1.5 Differential timing mode configuration
- 3.1.6 Legacy configuration interface compatibility
- 3.1.7 Navigation configuration
- 3.2 Geofencing
- 3.3 Logging
- 3.4 Communication interfaces
- 3.5 Predefined PIOs
- 3.6 Antenna supervisor
- 3.7 Multiple GNSS assistance (MGA)
- 3.8 Clocks and time
- 3.9 Timing functionality
- 3.10 Security
- 3.11 u-blox protocol feature descriptions
- 3.12 Forcing a receiver reset
- 3.13 Firmware upload
- 3.1 Receiver configuration
- 4 Design
- 5 Product handling
- Appendix
- Related documents
- Revision history
- Contact
ZED-F9T-Integration manual
Figure 35: ZED-F9T reference design for antenna bias
L1: Murata LQG15HS47NJ02 0402 47 N 5% 0.30 A -55/+125 C
D1: TYCO, 0.25PF, PESD0402-140 -55/+125C
C3: MURATA GRM033R61E104KE14 CER X5R 0201 100N 10% 25V
R2: RES THICK FILM CHIP 1206 10R 5% 0.25W
It is recommended to use active current limiting. If active current limiting is not used, the important
points covered below need to be taken into account:
Figure 36: ZED-F9T VCC_RF antenna bias
The bias-t inductor and current limiting resistor must be selected to be reliable with a short-
circuit on the antenna feed if no active current limiter is used. Our recommended part has
a limit of 300 mA. A part with a higher current capability will be needed if the short circuit
current is as described here. This will also be affected by the voltage level of the antenna
UBX-19005590 - R05
4 Design Page 68 of 87
C1-Public Early production information