Seiwa SWRx series - Manual (Page 41)

43 User Manual
5. Troubleshooting
5.1 The Radar page is not available
This means you didn’t configure the I/O setup to connect to the Radar. Enter the
I/O Setup menu (see procedure at Par. 1.7.1) and select the Radar on the serial
port to which the Radar is connected.
5.2 The message "Please Turn On Radar" is displayed on the
Radar window
This means that even if the I/O Setup has been configured for Radar, no Radar is
being detected. This may depend on several factors:
♦
Verify that the correct serial port is set in the I/O Setup menu, eventually
try setting the Radar on another serial port.
♦
Check that the Radar is connected to the chart plotter, to the same serial
port as set in the I/O Setup menu, in case try connecting it to another
serial port.
♦
Verify that all the connections in the Junction Box are done properly.
♦
Verify using a Voltage Meter that the Radar power supply level at the Junc-
tion Box is at least 12V. The Radar is able to operate with 10V but some
volts may be dropped due to the cable length.
If everything above is correct, try shorting the green and the blue wires in cable
coming from the Radar. If the Radar still doesn’t work you need to call for assistance.
5.3 The Radar preheating countdown timer is displayed but
when the preheating terminates it restarts over and over
again
The power supply level is too low. This may be caused by battery low, cable too
long, cable section to narrow.
5.4 Too much clutter near the Radar screen center
This is a typical phenomenon with Radar. Echoes from nearby vessel may hit
other objects like other vessels or other objects randomly and reflections can be
received by Radar antenna due to very short distance between the objects. This is
normal condition in a port where nearby targets (such as sailboat masts) may
cause multiple reflections. In this case, increase the STC and decreasing the
GAIN.
5.5 During navigation in open sea the center of the screen is
covered by a large spot
It means that most probably the Transmission Trigger Delay and/or the Main Bang
Suppression need to be correctly tuned (refer to Par. 1.7.4.4).
5.6 After turning transmission On, the Radar page remains
completely black
The Gain setting could be too low or STC setting too high. The Radar is probably
not properly tuned. Execute the Automatic Tuning procedure to restore optimal
performance (refer to Par. 1.7.4.5).