Check and program a Reach with Emlid Diagnostics

Tap Settings

Start on the Home screen. If you're somewhere else, tap Home at the top of the column of big buttons down the right side of the screen.

In that same column, Settings is the fourth button from the top, with a gear symbol. Tap it. The Settings page opens: one long page of white boxes.

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Scroll to the bottom of Settings

Put a finger on the middle of the screen and slide it up. Do it again until the page stops moving (see Scrolling).

You're at the bottom when the last white box is Dealer Code. Under it, in the middle, is a rounded button with a satellite symbol: Emlid Diagnostics.

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Tap Emlid Diagnostics

It's the rounded button with a satellite symbol, in the middle under the Dealer Code box. Tap it. A window called Emlid Diagnostics opens in the middle of the screen.

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Wait while it looks for the receiver

For a second or so the window shows a spinning circle and Looking for a Reach on this Wi-Fi…. The app is reading the receiver's settings.

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If it says Not connected to a Reach

The tablet isn't on the receiver's Wi-Fi yet. Tap Open Wi-Fi settings, the white button at the bottom of the window. The tablet's Wi-Fi list opens: join the receiver's network (see First, join the receiver's Wi-Fi).

Press Back to return to the app. Then tap Retry, the green button in the bottom right corner of the window. The app looks for the receiver again.

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Read what it found

At the top of the window is the receiver: its model and job (here Reach RS3 · Rover), serial number and firmware.

Under that is one line in colour, the verdict. It tells you whether the receiver matches a Ditch Assist setup:

• Green tick, for example Configured as Ditch Assist Rover: it matches that setup. If that's the job you want, you're finished. Close the window with the X in its top right corner.
• Amber, for example Closest: Ditch Assist Rover — 3 settings differ: the rows that differ are amber. Go on to the next step to set it up.

The word "Rover" in the top line is the receiver's own name for its job. It stays "Rover" on a Lite Rover too; the green line is the one to read.

Tap Configure

Do this when the verdict is amber, or green with the wrong job.

Configure is the green button with a wrench symbol, in the bottom right corner of the window. Tap it. The window changes to show three choices.

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Tap the job this receiver will do

Three boxes sit one above the other. The job it matched is already picked: its round button is filled in green. Tap the box you want:

• Base (top box): the receiver on the tripod.
• Rover (middle box): plugged into a control module or DIG module with the GPS cable. It turns on and off with the module.
• Lite Rover (bottom box): Ditch Assist Lite. The tablet reads it over its Wi-Fi.

The box you tap gets a green border and a filled round button.

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Base only: don't tap the three "slow down" buttons

Skip this step for a rover.

When Base is picked, three small buttons appear under the words Send at 0.5 Hz instead of 1 Hz: GPS, GLONASS and Galileo. These do not turn the satellites on or off. All three satellite systems are always used; each button only slows that system's corrections from once a second to once every two seconds. Leave all three white (not tapped), as in the picture. If the radio can't keep up, the app slows one down by itself and tells you.

An RS4 base also shows LoRa power: tap 500 mW, or 1000 mW for more range. An RS3 has no power choice: it always sends at its maximum, 20 dBm.

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Check the radio frequency

Under the three boxes is a box labelled LoRa frequency (MHz). It already shows the receiver's frequency, or the last one you used, for example 902.000.

It must be the same number on the base and on every rover. To change it, tap the box, delete the number and type yours, for example 915.000 (see Typing).

A Lite Rover has this box too: it sets the receiver to listen to your base.

A number outside the allowed band shows Enter a frequency between 902.000 and 928.000 MHz. The limits come from the receiver; North American units allow 902 to 928.

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Tap Program receiver

Program receiver is the green button with a play symbol, in the bottom right corner of the window. Tap it. The app starts writing the settings to the receiver.

Back, to its left, returns to the receiver's settings list without changing anything.

If the app is using this same Reach as its GPS right now (Ditch Assist Lite), an amber note appears above the buttons first:

• For Lite Rover: The app is connected to this receiver. The connection will drop for a few seconds while it is programmed, then reconnect.
• For Base or Rover: the receiver's Wi-Fi position output is turned off, so the app will lose this receiver as a GPS source. Disconnect first, or reconnect to another source afterwards.

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Wait while it programs

Lines appear one after another, two for each part of the receiver's settings: Programming GNSS, then Verified GNSS with a green tick once the app has read it back. The parts go in this order: GNSS, Position output 1, Position output 2, Base output 1, Base output 2, Correction input, Role.

Leave the tablet alone. On an RS3 set up as a Lite Rover, the whole run took about 15 seconds. The X in the corner is grey: the window can't be closed while it's writing.

A part that doesn't take is tried again, up to three times: Retrying Correction input (2 of 3)….

On a Base, if the radio can't carry all three satellite systems once a second, the app slows one to 0.5 Hz and tries again (GLONASS first, then Galileo, then GPS): Radio cannot carry these rates — sending GLONASS at 0.5 Hz.

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Read the result

The app reads the receiver once more. The verdict turns green: Programmed as Ditch Assist Lite Rover (or Base, or Rover).

The rows below now show the receiver's new settings. On a Lite Rover the row Position output 1 changes to tcpsvr :9001 NMEA · GGA 5 Hz, VTG 1 Hz.

If the app slowed the base, an amber note lists the rates, for example The radio could not carry 1 Hz on every constellation. Corrections now go out at: GPS 1 Hz · GLONASS 0.5 Hz · Galileo 1 Hz.

Tap Retry to check it once more

Retry is the white button beside Configure, at the bottom right of the window. Tap it. The app reads the receiver again from scratch.

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You should see Configured as Ditch Assist …

The verdict now reads Configured as Ditch Assist Lite Rover (or Base, or Rover), with a green tick and no amber rows. The receiver is ready. Close the window with the X in its top right corner.