Adjusting The Transceiver Parameters; Selecting Passive Transceiver Mode - Simrad ES80 Reference Manual

Adjusting the transceiver parameters

Topics
Selecting Passive transceiver mode, page 159
Adjusting the output power, page 160
Adjusting the pulse duration, page 160
Defining the frequency sweep (chirp) within each transmission, page 161
Defining the pulse type for the ES80 transmissions, page 162

Selecting Passive transceiver mode

In Passive mode, the ES80 will receive and compute the signals detected by the
transducer(s). This mode is thus useful for test purposes, and when you wish to measure
the ambient background noise in the sea. It can also be useful to run the ES80 in Passive
mode to discriminate between target echoes (present only in Active mode) and noise
(present in both Active and Passive modes).
Context
If you wish to investigate the ambient noise, choose Passive mode in the
dialog box. Any noise or disturbance in the water - within the transducer's
Operation
frequency range - will then be detected and shown. This feature will for example be
able to pick up disturbances from other hydroacoustic systems on your own vessel, or
on other vessels in the vicinity.
The current setting of this parameter is also shown in the
Procedure
1 Open the
Operation
2 Select
Normal Operation
Observe that the
3 For the relevant transceiver channel, set
Note
If you set
Mode
the echogram(s).
4 Select to save the selected setting and close the dialog box.
OK
406273/C
menu.
.
dialog box opens.
Normal Operation
to Passive, your ES80 will no longer provide any information in
menu.
Extras
to Passive.
Mode
Operating procedures
Normal
159