7
NOTE:
when a scan is in suspended status, the app stores the
scan information taken that turn.
While a scan is in suspended status, the app can be
closed and the radio disconnected.
When the app is next restarted, the scan can resume
from the point at which it was suspended.
To keep the display of scans made up to that moment,
the file of the meters on the map must not be edited. See
section “Interrupted/suspended scan”.
It is therefore important not to start a new scan. See sec-
tion “Broadcast scan”
5.1.2 Single scan
Only for models: ARROWWAN 169 and ARROWWAN
MVM 169.
Broadcast mode, explained above, is what is generally
used in walk-by/drive-by scans.
By its very nature, this mode calls all Maddalena radios,
and all radios within range which receive the call start
to transmit their data with a certain randomised delay
to limit the number of transmissions being made at the
same time.
If there is a very high concentration of radios, transmis-
sions from individual radios may “collide”, although to a
limited extent.
In addition to broadcast mode, you can also call an indi-
vidual radio.
This is useful when you want to scan a single radio with-
out scanning all the others in range as a test (in the
workshop, for instance) or if you have scanned 99 radios
out of 100 and want to call the last one without creating
“collisions” between the messages transmitted by radios
which have already responded.
You can scan a single radio in two ways: on the map (i.e.
the radio is included in the database) or on the home
page (useful during installations or when the radio is not
in the database).
5.1.2.1 Non-database scan
To scan a radio which is not in the database, go to the
home page and click on “START NEW SINGLE SCAN”.
This opens a new page in which you can use the device
camera to scan the barcode label containing the serial
number of the radio being tested.
Alternatively to scanning the barcode, you can also use
the keypad to enter the radio’s serial number by clicking
“enter code” at the bottom right.
Once you have entered the serial number, click on
“START SCAN”.
Antenna 169 will now query the radio with this serial
number.
The radio will respond within a few minutes (generally
within 40 - 60 seconds).
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