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Nobeltec InSight Radar (IR2)
Operations Manual
Initial Radar Setup
Setting the Trigger Delay
After successfully installing the radar, transmit trigger delay should be reviewed and
adjusted in order to compensate for cable transmission delays. Longer cable runs
generally require a higher trigger delay setting.
To do this, start the Nobeltec software and launch the Insight Radar window. Once it
is open and displaying a radar image, adjust the Transmit Trigger Delay. Next, click
on the Radar drop down menu then on the Initial Radar Setup option.
Setting the Transmit Trigger Delay: The transmit trigger delay (TxTrig) is a setting
that when set incorrectly can cause a donut like ring to appear in the center of the
radar image. The trigger delay should be initially set to reduce the size of the ring.
In most cases, Transmit Trigger should be between 125 and 160. Refinement of the
Transmit Trigger is best done using Nobeltec’s radar overlay on a chart.
Transmit Trigger Delay can also affect the radar image of a straight object such
as a breakwater or riverfront. These can appear deformed due to excessive or
inadequate trigger delay. Properly setting this may require on-the-water tuning when
looking at a straight object. The trigger delay adjustment removes deformations in
the radar return as shown in the images below.
Setting up IR2
