© 2006 Leadtek Research Inc. All rights reserved. Page 7/12
Preliminary Confidential - Information is subject to change without prior notice.
LR9101LP Specifications Sheet Rev. 0.1
3.4.
Timing 1PPS output
The 1PPS pulse width is 1 µs, this 1PPS is NOT suited to steer various oscillators (timing
receivers, telecommunications system, etc).
3.5.
Sensitivity
Parameter
Description
Tracking Sensitivity
-159 dBm
Acquisition Sensitivity
-155 dBm
3.6.
Battery backup (SRAM/RTC backup)
During ‘Powered down’ condition, the SRAM and RTC (Real Time Clock may be kept
operation by supplying power from VBATT. The Leadtek 9101LP GPS module can accept slow
VBATT supply rise time (unlike many other SiRFstarII based receivers) due to an on-board
voltage detector.
3.7.
Differential aiding
3.7.1.
Differential GPS (DGPS)
Option
DGPS specification improves the Leadtek 9101LP GPS Module horizontal position accuracy to
<4M 2dRMS.
3.7.2.
Satellite Based augmentation System (WASS/EGONS)
Option
The Leadtek 9101LP GPS Module is capable of receive SBAS(WASS and EGONS) differential
corrections. SBAS improves horizontal position accuracy by correcting GPS signal errors caused
by ionospheric Disturbances, timing and satellite orbit errors.
Both SBAS and DGPS should improve position accuracy. However, other factors can affect
accuracy, such as GDOP, multipath, distance from DGPS reference station and latency of
corrections.
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