409977/B
37
4
Make the following preparations.
a
On the
Main
menu:
•
Set
Range
to
1500 m
.
b
Open the
Operation
menu.
•
Set
Tx Power
to
Off
.
c
Open the
Active
menu.
1
Set
Pulse Type
to
CW Medium
.
2
Set
Frequency
to 20 kHz.
3
Set
Vertical TX Sector
to
Narrow
.
4
Set
Noise Filter
to
Off
.
5
Set the
Bottom Filter Threshold
to
Off
.
d
Open the
Setup
menu.
•
Select
BITE
to open the
BITE
(Built-In Test Equipment) dialog box.
5
Select
Transceiver
to open the page.
This page provides a graphic presentation of the 12 transceiver boards. The
presentation reflects their physical location in the Transceiver Unit. Only
static information is provided. The
Board Information
parameters offer key
information about the supply power to the selected transceiver board, as well as
the environmental conditions.
6
Make sure that all the 12 transceiver boards are fully functional.
7
Select
Transducer
to open the page.
The
Transducer
page presents all the elements that are used in the SU90 transducer.
The presentation attempts to organize the elements in the same manner as in the
physical transducer. The transceiver boards are shown as "buttons". Select a
transceiver board to highlight the elements that are physically connected to the
board.
8
Select
Reception Test
to start an automatic test of the individual transducer elements.
The reception test validates each single element in the SU90 transducer, and returns
the status using a simple colour coding.
• Green: The transducer element is fully operational.
• Red: The transducer element offers reduced performance.
• Black: The transducer element is not working ("dead").
For more information, observe the tooltip provided for each element rectangle.
9
Verify that the maximum number of unserviceable ("dead") elements does not
exceed 4.
A small number of unserviceable transducer elements are accepted, even for
operational use. This is regarded as "graceful degradation”.
Содержание SU90
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