DATASONICS SIS-1500, System Manual

Page: 95 / 110

SIS-1500 Seafloor Imaging System 5-13
SECTION 5 Maintenance and Troubleshooting System Troubleshooting
The VOLTS meter indicates
a voltage that is less than
140 volts, and/or the
AMPERES meter shows no
current fluctuations or a
current over 500 ma.
(Cont.)
The Microcontroller board is
not functioning. Verify that the red LED on the
Microcontroller board is
blinking. If it is not, replace
the board.
The tow vehicle does not
respond to commands. The serial port settings are
incorrect. Click Start from the Windows
Taskbar, select Settings, and
then choose Control Panel.
Double click the System icon
in the Control Panel window,
and then select the Device
Manager tab in the System
Properties window.
Verify that the View devices
by type option button is
selected, and then double
click Ports.
One at a time, select the
communications ports, click
Properties, and then select
the Resources tab in the
Properties window. Verify the
following settings:
Serial Port Address IRQ
COM1 03F8 04
COM3 02F8 05
COM4 02E8 10
NOTE: COM2 is used for
the pointing device and is
not shown as available.
Use Windows HyperTerminal
from the Windows
Accessories program group
to send a command to the
tow vehicle. For example,
type
TLF 1 <CR> to set the
repetition rate to the 25 meter
range. For other commands
refer to Downlink Commands
begining on page 5-21.
Table 5-2 Tow Vehicle Activation Problems
Symptom Possible Cause Corrective Action