Operator Controls and Indicators 5-11
5.5 Operator Controls and Indicators
All of operator controls and indicators are located on the connector panel of the
SP-II TPU as shown in Figure 5-4 on page 5-6. They are the following:
PWR: Green indicator that is illuminated when either AC
or DC power is on.
A/C-D/C: 3-position switch that when switched to A/C, selects
AC power to power the SP-II TPU, and when
switched to D/C, selects DC power. With the switch
in the center OFF position, power is disconnected.
T/F PWR: Blue indicator that is illuminated when 200 VDC is
being applied to the towfish.
T/F TRIG: Yellow indicator that flashes when the sonar pings.
RESP TRIG: Yellow indicator that flashes when a responder
trigger pulse is output.
LOCK LOSS: Red indicator that illuminates when the telemetry
link with the towfish is interrupted or lost.
D/C POLARITY: Red indicator that illuminates when the polarity of
the DC input power is reversed from what it should
be.
5.6 Configuring and Updating the SP-II TPU
The SP-II TPU is configured at the factory. However, should changes be required,
configuring and updating the SP-II TPU can be performed using Linux Updater.
This program is automatically installed when installing SonarPro 12.1 and can be
used to perform the following tasks:
• Query or change the IP address of the SP-II TPU.
• Edit the startup file of the SP-II TPU.
• Download and install software updates to the SP-II TPU.
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