Simrad FS70 -, Operator'S Manual

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FS70 Trawl Sonar System
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974-24007001/5.0
3.2.8.3 External Synchronization
Click to select the hardware synchronization mode.
The Hardware Synchronization is used in conjunction with devices with two hardware lines
(signal and ground) that may be used to synchronize transmit bursts of two or more sonar
heads or TTMs. Note that the Hardware Synchronization is only useful and applicable
when the heads are attached to separate telemetry lines. The selection options are:
Slave (Input) : This head is synchronized with other heads. It pings only when the other
heads are ready to ping.
Master (Output) : Allows other heads to synchronize to this head. This head runs free and
pings at it own time.
Select (Input/Output) : It pings only when other heads are ready to ping. It also provides
the signals for other heads to synchronize to it.
Note that the heads in Input or Input/Output would only wait a total of 2 seconds for
synchronization signal, after which they proceed with a ping anyway.
3.2.8.4 Audio Setup