SIRETTA SNYPER-LTE graphyte - Survey Menu

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SNYPER-LTE Graphyte
User Manual
Download Latest Edition
Rev 1.7
Survey Menu
The SNYPER Graphyte has 3 operational modes for performing surveys.
» Single Survey: A single, complete survey of the cellular environment as seen by the
SNYPER Graphyte. The survey result is available as a .CSV le, with a .HTM summary le.
» Multiple Cycle Survey: In Multiple Cycle Survey, the user can conduct a survey over
many cycles (user dened up to 500). These surveys can either run consecutively with
each other, or after a user selectable time interval of up to 24 hours. The Graphyte will
show the average of all the surveys carried out. Like Single Scan survey, .HTM and .CSV
les will be created. In Multiple Cycle Survey there will be two .CSV les created. One with
the averaged summary data, and one containing all the data from all the surveys that were
conducted. Multiple cycle survey is a signicant feature of the SNYPER Graphyte. Received
signal strength of cellular networks is not a constant. They vary in even short spaces of
time. Therefore, carrying out a multiple cycle survey in an area gives a much better view
of the best signal strength for a specic network. It is recommended that users carry out
a 5-cycle survey as a minimum to get a good view of signal strength available in any given
location.
NOTE: The Graphyte can only record a maximum of 255 cells (combined total of all cell types). This
will never be a problem when the Graphyte is not moving. If, however, the Graphyte is doing a multi-
cycle log on a moving vehicle, then the maximum of 255 could be a limitation dependant on vehicle
speed and number of measurement cycles. Please also remember that a survey is not instant – the
Graphyte will be retuning its radios to listen to all the different frequencies that it supports (many
hundreds!) as it conducts a survey, and this is the reason why a survey will take several minutes to
complete. So a survey where the Graphyte is moving does not represent a survey of all frequencies
at a single point on the ground, but a survey along the movement path between when the individual
survey started and when it completed.
» LiveSCAN: This is a continuous survey where the SNYPER Graphyte is locked onto a
user specied channel frequency. The SNYPER Graphyte graphically shows the received
signal strength of that channel on a continuously updated rolling display until cancelled. In
conjunction with the supplied directional antenna, this allows the user to move the antenna
around until the direction with the greatest signal strength is found. In conjunction with an
omni-directional antenna, this allows the user to move around a site to identify the location
of the best signal strength of the channel locked onto. A .csv le of each survey taken
during the LiveSCAN is kept for the user to analyse if required.
All surveys require that there is available disk space inside the SNYPER-LTE Graphyte to
store the results of the survey. When the available disk space becomes critically low, the
SNYPER Graphyte will not allow a survey to start. Should the SNYPER Graphyte run out of
disk space while performing a multiple cycle survey or logging a LiveSCAN, it will save the
surveys completed before the disk space ran critically low prior to terminating the survey
gracefully. So a 25 cycle survey may only contain 21 surveys on premature completion as
an example.