Key facts
- Brand
- Leadtek
- Model
- LR9101
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
Start here
Leadtek LR9101LP GPS Module User Manual
This manual introduces the Leadtek LR9101LP GPS module, a compact 20‑channel SMD GPS receiver designed for OEM integration in devices such as PDAs, handhelds and asset‑tracking units. It outlines the module's high‑gain architecture, SiRF StarIII/LP chipset, and RoHS‑compliant construction.
The document details technical specifications, hardware and software interfaces (TTL serial, NMEA‑0183/SiRF Binary), mechanical dimensions, recommended antenna, environmental limits, and compliance information, helping developers integrate the module quickly and reliably.
Leadtek LR9101 specifications
| Module size | 15x14x2.8 mm (590.6x551.2x110.2 mil) |
|---|---|
| Weight | 1 g |
| Antenna type | Right‑hand circular polarized passive antenna |
| Antenna frequency range | 1575.42 ± 1.023 MHz |
| Serial baud rate | 9600, 19200 bps (default 9600) |
| Output frequency | 1 Hz |
| Supply voltage | 1.50 VDC |
All Leadtek LR9101 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the start‑up time for the LR9101LP?
Cold start takes 42 seconds, warm start 38 seconds, and hot start 1 second.
Which communication protocol does the module support?
It uses a TTL level serial port and supports NMEA‑0183 and SiRF Binary protocols.
What is the power supply voltage required for the LR9101?
The module operates from a 2.85 VDC supply.
How long does it take the LR9101 to acquire a fix in a cold start?
A cold start (TTFF) takes approximately 425 seconds.