ImpulseRadar PinPointR User Manual V1.5
Page 13 (36)
ViewPoint monitors the Wi-Fi connection between the Device and the GPR unit to which it is
connected; should the Wi-Fi connection be lost during measurement, then a warning will be presented.
You will be prompted to wait for the Wi-Fi to reconnect or stop the measurement and save all the files.
However, if the Device manages to connect to another wireless network when this occurs, then
ViewPoint won
’
t be able to reconnect to the GPR unit.
Multiple Devices
Nowadays, you are likely to have more than one Device in your possession, or within the vicinity of the
GPR unit during measurement. You may also have more than one Device set-up to collect data from a
particular GPR unit. Such situations raise concerns about which Device will connect and stay connected
to the GPR unit if more than one is within range. Since only one Device can be connected at any one
time, then multiple Devices attempting to connect simultaneously could lead to interruptions in data
acquisition. The GPR unit Wi-Fi lock generally takes care of this; however, it
’
s possible to force a
connection if it is necessary to change a device.
In some instances, it may be possible for a GPR unit to connect to more than one Device at the same
time, although not consistently. The resulting connection will be unstable as the GPR unit tries to
connect then disconnects to each Device repeatedly. Under such circumstances, there will be blatant
interference in the data in the form of many missed traces, and at the start screen, buttons will blink.
This blinking effect is a warning, and you should investigate the connection settings to fix the problem.
Multiple GPR units
If you have more than one GPR unit, we recommend allocating one primary data acquisition Device to
each, to avoid the potential issues described above. Furthermore, once the Device is connected, you
should disable the settings for any other GPR units on that Device.
Key Wi-Fi actions
•
Allocate a primary Device for each GPR unit.
•
Disable the
“
auto reconnect
”
option for all Wi-Fi except the Wi-Fi of the GPR unit in use.
If you have another Device nearby when measuring, e.g. an Android Smartphone in your pocket, then
you must disable Wi-Fi on this or any other nearby Devices in your possession.
ViewPoint Installation
Security note
As part of the Android operating system, there is a security restriction that prevents the installation of
applications from outside the Google Play Store. Since ViewPoint is not available on the Google Play
Store, you will need to make some adjustments to your device system settings to proceed with the
installation, as follows:
1.
Navigate to Settings > Personal > Lock screen and security
2.
Check the option
“
Unknown sources
”
3.
At the message prompt, select
“
OK
”
You may now proceed with the installation of ViewPoint.
If your Device has an internet connection, you can download the ViewPoint installation file directly
from the Resource area of the ImpulseRadar website at
https://impulseradargpr.com/resources
Alternatively, if your Device incorporates a USB-A port, you can install ViewPoint directly by connecting
