Installation manual

SimradPI50
Receiversettings
Thissectionprovidesproceduresrelatedtoreceiversensitivity,interferenceandreceiver
lters.
Topics
•Howtoadjustthereceiversensitivityonpage98
•Howtoghtinterferenceonpage99
Howtoadjustthereceiversensitivity
TheparameterusedtoadjustthereceiversensitivityistheDetectionThreshold(DT).Itis
adjustedintheReceiverdialog.
Figure40DetectionThresholdprinciple
dB
f
(CD0121 16-001)
ANoise
BSignalfromsensor
CDetectionthreshold
SensorsignalsbelowthethresholdlevelwillnotbedetectedbythePI50,whilesignals
abovethethresholdwillbedetected.Ifthethresholdlevelissettoolow,thesensor
signalwillbeburiedinthenoise,andthismaycausefalsesignalstobedetected.
Ifthedetectionthresholdissettoohigh,thesignalfromthesensorwillnotbedetected.
1ClicktheSetupiconundertheMainmenutoopentheSetupmenu.
→Setupmenuonpage112
2ClickReceivertoopentheReceiverdialog.
3AdjusttheleveloftheDetectionThreshold(DT).
ForPI50twodifferentparameterrangesareused:
•3to14:Byincreasingtheparametervalue,thethresholdlevelisincreased.
ThisrangeshouldnormallynotbeusedforPI50.
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