GPS 20x - Receiver GARMIN - Free user manual and instructions
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| Type of Product | GPS Receiver Module |
| Brand | Garmin |
| Model | GPS 20x |
| Dimensions | Approx. 4.5 x 3.5 x 1.2 cm (1.8 x 1.4 x 0.5 in) |
| Weight | Approx. 15 g (0.5 oz) |
| Power Supply | 3.3V DC, low power consumption (typical 80 mA) |
| Number of Channels | 12 parallel channels |
| Receiver Type | L1 frequency, C/A code |
| Update Rate | 1 Hz (position, velocity, time) |
| Position Accuracy | < 5 meters (without DGPS), < 3 meters with WAAS/EGNOS |
| Supported Augmentation | WAAS, EGNOS, MSAS |
| Serial Interface | RS-232 compatible (TTL levels), NMEA 0183 v3.0 |
| Antenna | Built-in patch antenna or external active antenna |
| Cold Start Time | Approx. 45 seconds (typical) |
| Warm Start Time | Approx. 15 seconds |
| Hot Start Time | Approx. 2 seconds |
| Operating Temperature | -40°C to +85°C |
| Maintenance and Cleaning | Wipe with a dry cloth. Avoid harsh chemicals. |
| Safety Precautions | Avoid moisture and static discharge. Do not disassemble. |
| Spare Parts and Repairability | No user-serviceable parts. Contact Garmin for repairs. |
| General Information | Designed for OEM integration. RoHS compliant. |
Frequently Asked Questions - GPS 20x GARMIN
How do I connect the Garmin GPS 20x to a microcontroller?
Connect the TXD pin of the GPS module to the RX pin of your microcontroller, and RXD to TX. Use a voltage level shifter if necessary, as the module uses 3.3V logic.
What NMEA sentences does the GPS 20x output?
By default, it outputs GGA, GLL, GSA, GSV, RMC, and VTG sentences at 4800 baud. You can configure the output via SiRF binary protocol.
What is the update rate of the GPS 20x?
The standard update rate is 1 Hz (one position fix per second). Some firmware versions support up to 5 Hz with binary protocol.
Does the GPS 20x support WAAS/EGNOS?
Yes, it supports WAAS, EGNOS, and MSAS for improved accuracy (< 3 meters). It must be enabled in the configuration.
What power supply is required for the GPS 20x?
It operates on 3.3V DC and draws about 80 mA during normal operation. Do not exceed 3.6V.
How do I perform a cold start on the GPS 20x?
To cold start, apply power while the antenna has a clear sky view. The module will search for satellites and acquire a fix in about 45 seconds.
Can I use an external antenna with the GPS 20x?
Yes, it has an antenna input for an external active antenna. The module provides 3V DC bias on the antenna connector.
What is the operating temperature range of the GPS 20x?
The module is rated for industrial use from -40°C to +85°C.
Is the GPS 20x waterproof?
No, it is not waterproof. It should be protected from moisture and condensation. Use conformal coating if needed.
How can I configure the GPS 20x?
Configuration is done via SiRF binary protocol or by sending proprietary NMEA commands. You can set baud rate, output sentences, and enable augmentation systems.
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USER MANUAL GPS 20x GARMIN
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Product information
Brand : GARMIN
Model : GPS 20x
Category : Receiver