Operational procedures
37
850-164692 / Rev.B
convenient range for the echogram, the distance between the
lines will give a good indication of the frequency causing the
noise.
Noise speed tests should be performed after all the frequencies
have been calibrated. All the frequencies can be measured
simultaneously. Thus, you should install all transceivers in
ER60.
Procedure
Observe the following procedure.
Initial set-up
1
On the
Install
menu, open the
Transceiver Installation
dialogue. Ensure that all the transceivers are installed.
2
On the
Operation
menu, select
Normal
to open the
Normal Operation
dialogue. Set the following
parameters:
a
Passive mode
b
Maximum transmit power
c
Same pulse duration as used during the calibration
d
0.0 m transducer depth
3
From the
Operation
menu, open the
Ping Control
dialogue. Set the following parameters:
a
Maximum ping rate
b
Switch off all external triggering
4
Right-click in the
Echogram
view, and select
Echogram
on the shortcut menu to open the
Echogram
dialogue. Set
the following parameters:
a
Surface reference
b
Sv backscatter
5
Right-click in the
Colour Scale
view, and select
Colour
Scale
on the shortcut menu to open the
Colour Scale
dialogue. Set the following parameters:
a
Minimum level -100 dB (chosen to give a reasonable
ping rate)
b
Maximum level -64 dB
6
Right-click in the
Echogram
view, and select
Range
on
the shortcut menu to open the
Surface Range
dialogue.
Set the following parameters:
a
Start relative surface: 0 m
Summary of Contents for ER60
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