Product Info

LTE Standard Module Series
EC21 Mini PCIe Hardware Design
EC21_Mini_PCIe_Hardware_Design 39 / 64
5.3. GNSS Performance
The following table shows the GNSS performance of EC21 Mini PCIe.
Table 17: GNSS Performance
Parameter Description Conditions Typ. Unit
Sensitivity
(GNSS)
Cold start Autonomous -146 dBm
Reacquisition Autonomous -157 dBm
Tracking Autonomous -157 dBm
TTFF
(GNSS)
Cold start
@open sky
Autonomous 35 s
XTRA enabled 18 s
Warm start
@open sky
Autonomous 26 s
XTRA enabled 2.2 s
Hot start
@open sky
Autonomous 2.5 s
XTRA enabled 1.8 s
Accuracy
(GNSS)
CEP-50
Autonomous
@open sky
<2.5 m
1. Tracking sensitivity: the lowest GNSS signal value at the antenna port on which the module can keep
on positioning for 3 minutes.
2. Reacquisition sensitivity: the lowest GNSS signal value at the antenna port on which the module can
fix position again within 3 minutes after loss of lock.
3. Cold start sensitivity: the lowest GNSS signal value at the antenna port on which the module fixes
position within 3 minutes after executing cold start command.
NOTES