Digitilt AT System

A1: Tap Settings > Application Manager > Digitilt Reader > Force Close. Then return to the home screen and restart the Digitilt Reader app.

A2: Are you running the Reader app on other tablets too? One of them may be connected. To break the connection, switch off that Reel’s Bluetooth.

Yes. The settings can be adjusted to the way you work and also variables at the site (such as a lot of ground vibration).

1. Turn sound off, so you can concentrate on the action rather than the record sound.
2. Tap Options > Survey Control.
3. Make a change. It is best to experiment with just one change at a time rather than making lots of changes all at once.
4. Tap “done” – the checkmark – to save the change.

Here are some suggestions:

• If the Reader depth is shallower than your cable depth, try setting “pull lockout” to 3 or a higher number. This tells the Reader to delay longer before accepting new input. You’ll see that the “saved” message appears for 3 seconds now. Experiment to find the right lockout timing. New users need a longer lockout, while expert users may prefer a shorter lockout.
• If your cable depth is shallower than your Reader depth, try setting “motion” to a lower number, for example 80. Users who pull slowly need a lower number. Users who pull quickly can use a higher number.
• If there is a lot of ground vibration at your site, you might need to use “Tap” mode, but you could try setting “motion” to a higher number and then pull quickly rather than slowly. The higher number decreases sensitivity to the ground motion, so you must accelerate the probe faster so that a pull can be detected.

Download it from the Google Play Store.

1. Tap the Google Play icon on your Android device.
2. Search for Digitilt Reader.
3. Tap Install.
4. Tap “Accept and Download” after reviewing permissions.
5. The Digitilt Reader icon appears in your app drawer. If it does not appear on your home screen, open the app drawer to find the icon. Then tap and hold the icon. When you release, it will be placed on one of your home screens.

Follow the steps below.

1. Download this file to your PC: Digitilt Reader APK. (APK is an Android setup file).
2. Connect the Android device to the PC using the USB cable supplied with the Android device.
3. Use Windows Explorer on your PC to copy the APK file to the Android device. Any location is ok, but remember where you saved the file. After copying the file, disconnect the device.
4. Open a File Manager program on your Android device – for example, My Files on a Samsung device.
5. Locate the apk file and tap it. You may need to authorize the installation of applications from sources other than the Google Play Store.
6. Now you can run the Reader app.

Download an alternate keyboard from the Google Play Store (such as the free Google Keyboard) that does have a decimal separator. You will need to set this as your default keyboard for your tablet.

Set default “display units” in the inclinometer settings. If you are taking readings and want to see a different unit, tap the unit label. For example, if the unit label is mm, tap the mm to toggle Digi-Metric or Digi-Native.

No. Pairing is a one-time operation in which Reader and Reel exchange Bluetooth IDs. After that, the Reader remembers the Reel, even if you switch Bluetooth off.

Yes, if you upgrade your DigiPro software to DigiPro2. DigiPro2 can import all of your classic surveys. After that, you can keep AT surveys and Classic surveys in the same project database; however, it is not recommended that surveys taken with one probe (classic or AT) be compared to initial readings taken by another probe (classic or AT).

No. The Classic probe is analog and the AT probe is digital. They have different power requirements and different readouts. Thus they are not freely interchangeable.

We do not recommend interchanging probes, in any case. Differences between probes are amplified by tilt and curvature of the casing, even with probes of the same type. The AT system features new cable marks and a cable gate, which introduces even more differences.

Best Practice: Some users obtain separate baseline surveys with two systems: an “active” system and a “backup” system. Subsequent surveys are taken with active system only. If that system fails, the backup system and its baseline survey can be used to continued the monitoring program. In this scenario, AT and classic systems would work well as either active or backup systems.

Yes, there are three main differences:

• AT cables are lighter and easier to carry, but permanently attached to the cable reel.
• AT cable marks are designed to work with a cable gate.
• AT cable marks are measured from the top wheels of the probe, rather than the middle of the probe.

The AT system displays readings as mm or inches of tilt, and this reading applies at the depth of the top wheels. Scroll downwards to see a technical explanation with a graphic. Classic cable marks are measured from the middle of the probe, but this has some unexpected effects when readings are plotted:

Metric Plots:

• AT system: A reading taken at 10 m is correctly plotted at 10 m, as you would expect.
• Classic system: A reading taken at 10 m is correctly plotted at 9.75 m, which you would not expect.

English Plots:

• AT system: A reading taken at 30 feet is correctly plotted at 30 feet, as you would expect.
• Classic system: A reading taken at 30 feet is correctly plotted at 29 feet, which you would not expect.

The cable gate provides an easy way to align cable marks to the top of the casing. With the pulley assembly, depth marks are typically aligned with the cleats at the top of the pulley, which is 0.3m or 1 foot above the top of the casing.

Metric Depths:

• AT system: When the cable mark shows 10 m, the probe is 10 m down hole.
• Classic system: When the cable mark shows 10 m, the probe is only 9.7 m down hole.

English Depths:

• AT system: When the cable mark shows 30 feet, the probe is 30 feet down hole.
• Classic system: When the cable mark shows 30 feet, the probe is only 29 feet down hole.

Summary: If classic surveys are not corrected for the pulley offset and the middle of the probe measurements, plots will show displacements a full interval deeper than they actually are.