Product Info

WA Module Series

BG95 Series Hardware Design

BG95_S

eries_Hardware_Design 63 / 106

1. Trac

king sensitivity: the minimum GNSS signal power at which the module can maintain lock (keep

posi

tioning for at least 3 minutes continuously).

2. Re

acquisition sensitivity: the minimum GNSS signal power required for the module to maintain loc

ithin 3 minutes after loss of lock.

3. Cold

start sensitivity: the minimum GNSS signal power at which the module can fix position

succe

ssfully within 3 minutes after executing cold start command.

4.3. La

yout Guidelines

The

following layout guidelines should be taken into account in application designs.

 Maximize the distance between GNSS antenna and main antenn

 Digita

l circuits such as (U)SIM card, USB interface, camera module, display connector and SD card

should be kept away from the antennas.

 Use ground vias around the GNSS trace and sensitive analog signal traces to provide coplanar

isolation and protection.

 Keep 50 Ω characteristic impedance for ANT_GNSS trace.

See Chapter 5 for GNSS antenna reference design and antenna installation information.

Hot start

@ open sky

Autonomous 1.6 s

TRA enabled 1.5 s

Accur

acy

(GNSS)

CEP-50

Autonomous

@open sky

< 3 m

NOTES