Configuring Emlid Reach as a Hardwired Permanent Base

This guide walks through how to set up an Emlid Reach base on Emlid Caster using a hardwired internet connection. A USB cable is used to provide both power and the serial data stream — though this can also be configured via the extension port, or a combination of both. Because this base is intended to run continuously, USB power is sufficient for this setup.

Part 1 — Installing SNIP

1. 1
   Download SNIP from the official site. Add the software to your cart and fill out the required fields to receive the download link by email.
2. 2
   Once downloaded, extract the ZIP file and run the setup program. Follow the installer instructions, then launch SNIP.
3. 3
   SNIP can run in evaluation mode for up to one hour at a time, or you can register for a free Light License which allows continuous operation. To register, click Help → Registration and follow the registration wizard.

Part 2 — Configuring the Serial Stream

1. 4
   Plug in your RS2 via USB. Open Device Manager on your PC and identify the COM port assigned to the receiver.
2. 5
   Driver not recognized? Update the driver manually: navigate to Ports (COM & LPT) in Device Manager, select USB Serial Device, and confirm the change. Your receiver should now appear on the assigned COM port.
3. 6
   In SNIP, add a Serial Stream. Select your receiver's COM port, match the baud rate set in your receiver, then name the stream and configure the mount point. You can customize additional settings or leave them on Auto-Detect with RTCM Parsing and click OK.
4. 7
   Skip the startup/shutdown commands and finish the stream configuration. Right-click the stream and select Connect to begin the data flow. Confirm that data is actively coming into SNIP before proceeding.

Part 3 — Pushing to Emlid Caster

1. 8
   Add a second stream in SNIP — this time a Pushed Out Stream. Select your serial stream as the data source and set the output destination to caster.emlid.com.
2. 9
   Fill in the remaining fields using your Emlid Caster mount point credentials. This routes your base data through Emlid Caster, which simplifies IP anonymization without requiring manual proxy configuration.
3. 10
   Confirm the second stream is active and your mount point shows as online in Emlid Caster. Your base is now live. Connect any network rover using your rover credentials in Emlid Caster.

Processing Your Base Location Through OPUS

After logging data with your base for approximately 20 hours, process your base location through OPUS (Online Positioning User Service) to obtain a precise, surveyed coordinate. Set that OPUS solution as your base point, with 0 entered as your base pole height.