419050/B
303
Measuring the BITE noise with the transducer disconnected
from the Transceiver Unit
Low noise is a key factor for high quality and reliable measurements. The performance
of the SC90 will always be limited by different noise sources. A high noise level will
mask the echoes and make them difficult to read and interpret. The noise is measured
while the SC90 operates in
Passive
mode with the transducer disconnected.
Prerequisites
The SC90 is installed as specified in this manual. All cables - except the transducer cable
- are properly connected. Neither tools nor instruments are required.
Context
This task allows you to check the noise conditions. To measure the noise level, observe
the value presented on the
B-Scan
page in the
BITE
(Built In Test Equipment) dialog box.
Note
This task must be done with the transducer cable disconnected from the Transceiver Unit.
Procedure
1
Set
TX Power
to
Off
.
2
Make sure that the transducer is retracted to its upper position.
3
Disconnect the transceiver plug from the Transceiver Unit output.
4
Set
Mode
to
Bow Up
.
5
Make the following preparations.
a
Select the
Horizontal
tab to open the menu.
b
Set
Range
to: 1500 m
c
Set the
Frequency
to: 82.5 kHz
d
Select the
Setup
tab to open the menu.
e
Select
Test
on the
Setup
menu to open the
System Test
menu.
f
Select
Test Config
to open the
Test Config
parameter dialog.
g
Select
Noise & VR
to select the
Noise test
settings.
h
Select the
Horizontal
tab to open the menu.
i
Set
Gain
to:
20
The
Gain
setting has no effect on the noise measurement.
6
Open the
BITE
(Built-In Test Equipment) dialog box.
Summary of Contents for SC90
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Page 16: ...14 419050 B Simrad SC90 ...
Page 219: ...419050 B 217 Øverland UPC 3005 Dimensions Cable layout and interconnections ...
Page 223: ...419050 B 221 Øverland UPC 5000P Dimensions Cable layout and interconnections ...
Page 438: ...436 419050 B 427177 Transducer dock dimensions page 494 Simrad SC90 Installation Manual ...
Page 441: ...419050 B 439 Drawing file ...
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Page 463: ...419050 B 461 Drawing file ...
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Page 469: ...419050 B 467 Related topics Installing the optional gate valve DN350 page 84 Drawing file ...
Page 471: ...419050 B 469 Drawing file ...
Page 473: ...419050 B 471 214043 Gate valve installation DN350 Drawing file ...
Page 475: ...419050 B 473 422915 Gate valve installation DN350 Drawing file ...
Page 477: ...419050 B 475 083045 Gate valve installation DN500 Drawing file ...
Page 479: ...419050 B 477 33414 Gate valve dimensions DN350 Drawing file ...
Page 480: ...478 419050 B Simrad SC90 Installation Manual ...
Page 481: ...419050 B 479 Related topics Installing the optional gate valve DN350 page 84 Drawing file ...
Page 482: ...480 419050 B 33473 Gate valve dimensions DN350 Simrad SC90 Installation Manual ...
Page 483: ...419050 B 481 Related topics Installing the optional gate valve DN350 page 84 Drawing file ...
Page 484: ...482 419050 B 33498 Gate valve dimensions DN500 Simrad SC90 Installation Manual ...
Page 485: ...419050 B 483 Drawing file ...
Page 487: ...419050 B 485 37357 Gate valve dimensions DN500 Drawing file ...
Page 488: ...486 419050 B Simrad SC90 Installation Manual ...
Page 489: ...419050 B 487 Related topics Installing the optional gate valve DN500 page 103 Drawing file ...
Page 491: ...419050 B 489 Drawing file ...
Page 494: ...492 419050 B Simrad SC90 Installation Manual ...
Page 495: ...419050 B 493 Related topics Installing the optional gate valve DN350 page 84 Drawing file ...
Page 497: ...419050 B 495 Drawing file ...
Page 542: ... 2018Kongsberg Maritime ISBN xxx ...
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Page 544: ...Simrad SC90 Fish finding sonar Installation Manual ...