Block Diagram - Quectel L76 Hardware Design

2
TTFF
(with AGNSS)
3
TTFF
(without AGNSS)
Horizontal Position Accuracy
Update Rate
Accuracy of 1PPS Signal
2
Velocity Accuracy
Acceleration Accuracy
Dynamic Performance

1.4. Block Diagram

The following figure shows a block diagram of the modules. The modules include a GNSS IC, an
additional LNA (only supported by L76-L and L76-L(L)), an additional SAW filter, a TCXO and a XTAL.
The LNA is less susceptible to in-band interference in challenged environment (i.e. with a cellular module
transmitting B13 at the same time). This ensures enhanced performance in an environment where
jamming may be encountered.
3
Open-sky, active high precision GNSS antenna, less than 1 km baseline length.
4
CEP, 50%, 24 hours static, -130 dBm, more than 6 SVs.
L76&L76-L_Hardware_Design
Tracking
Cold Start
Warm Start
Hot Start
Cold Start
Warm Start
Hot Start
4
2
2
-165 dBm -167 dBm
15 s 15 s
5 s 5 s
1 s 2 s
35 s 32 s
30 s 30 s
1 s 2 s
2.5 m
1 Hz (max. 10 Hz)
Typical accuracy: 100 ns
Time pulse width: 100 ms
Without aid: 0.1 m/s
Without aid: 0.1 m/s²
Maximum Altitude: 10000 m
Maximum Velocity: 515 m/s
Acceleration: 4g
GNSS Module Series
-167 dBm
15 s
5 s
2 s
32 s
30 s
2 s
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