knudsen Chirp 3260 User manual

CHIRP 3260 ECHOSOUNDER
TROUBLESHOOTING AND MAINTENANCE MANUAL
D101 - 04999
Revision 1.0
Knudsen Engineering Limited
10 Industrial Road
Perth, Ontario, Canada
The information contained in this document is proprietary data of Knudsen
Engineering Limited. Any disclosure, use or reproduction of this information for
other than the specificpurpose intended is expressly prohibited unless agreed to in
writing by Knudsen Engineering Limited.

CONTENTS
1 INTRODUCTION ........................................................ 1-1
1.1 Aboutthismanual................................................... 1-1
1.2 TechnicalSupport................................................... 1-1
2 CHIRP3260BREAKDOWN ................................................ 2-1
3 TROUBLESHOOTING .................................................... 3-1
3.1 SystemAppearsDead................................................ 3-1
3.1.1 FuseCheck ................................................. 3-1
3.1.2 VoltageChecks .............................................. 3-1
3.1.3 FETChecks................................................. 3-2
3.2 CommunicationIssues ............................................... 3-4
3.2.1 ExternalUSB................................................ 3-4
3.2.2 InternalUSBHub ............................................ 3-4
3.2.3 Drivers..................................................... 3-4
4 MAINTENANCE......................................................... 4-1
4.1 PerformanceChecks ................................................. 4-1
4.2 SystemCleaning.................................................... 4-1
4.2.1 FanCleaning ................................................ 4-1
4.2.2 ContactCleaning ............................................. 4-1
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2-1 CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL
1 INTRODUCTION
1.1 About this manual
This manual provides troubleshooting and maintenance for the Chirp 3260 echosounder. It is advisable for all
users to become familiar with the relevant sections in this manual to ensure that the echosounder is used to its
optimum capability.
Please note that the Chirp 3260 echosounder contains modules that can generate several hundred volts at the
secondary of the output transformer. Extreme care and proper understanding is required upon removal of the
protective covers and exposure to these modules.
1.2 Technical Support
For technical support or to report problems please contact your local representative or:
Technical Support
Knudsen Engineering Limited
10 Industrial Road
Perth, Ontario
K7H 3P2
Voice: [phone] 8:30 am to 5:00 pm E.S.T. Core Hours
Fax: [phone]
E-Mail: [e-mail]
WebSite: http://knudsenengineering.com/
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2-1 CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL
2 CHIRP 3260 BREAKDOWN
For the purposeof this manual theChirp 3260 will bebrokendown intofivesections. They are theFront Panel,
The Power Supply Section, The Transmitter Section, the Processing Section, and the Rear Panel. Figure 1
shows the location of each section within the Chirp 3260 echosounder.
Figure 1 - Chirp 3260 Breakdown
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CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL 3-1
3 TROUBLESHOOTING
3.1 System Appears Dead
If the system is totally lifeless, start by examining for obvious problems. Confirm that the AC supply voltage
cable is properly connected. If you turn on the System Power switch on the front panel and the light does not
activate it could be that the bulb or fuse has blown or a failure has occurred inside the Chirp 3260.
3.1.1 Fuse Check
There is a main power input fuse located within the AC Input header on the Rear Panel. With the System
Power switch turned off the fuse can be removed and inspected. If the fuse is found to be blown there may be
a spare located in the spare fuse compartment. If the spare fuse is removed please replace for future use. The
fuse is a 2A, 250V slo-blo type.
Figure 2
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3-2 CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL
3.1.2 Voltage Checks
The AC supplyvoltageto theChirp 3260 is fed to four AC to DC voltage converters in order to create the DC
supply voltages for the internal modules. The three larger voltage converters (48V each) combine to create the
144V rail voltage used by the bank of high power transmitter modules. The fourth voltage converter supplies
a 24Vrailthat is used to power allthemodules intheProcessing Section. Using a multimeter you canmeasure
these voltages at the following test points. Leave the System Power switch on the Front Panel engaged, but do
not activate the transmit for the tests.
144V: Between TP103 and TP100 located on the back side of any Transmitter Module (See Figure 2)
24V: J901 of the USB Processing Module (See Figure 2)
3.1.3 FET Checks
If all thefuses check out fine andall voltages are present and the Chirp 3260 does not seem to be transmitting
tothetransducers uponactivation,therecouldbea MOSFET failureona transmitter module. In order to check
if a MOSFET has failed you willneedto remove the module (See Figure 3). Prior to removing of a transmitter
module please turn thesystemcompletely off and leaveit for a couple of minutes to ensure drainage of stored
capacitor voltages.
Figure 3 - Transmitter Removal
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CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL 3-3
With the fan plate removed from the system you will find that each transmitter module is installed in a
backplane configuration. With the capacitor bank drained the transmitter module(s) can be pulled straight up
and out of the backplane sliding on the card guides.
There are four MOSFETS installed on the heatsink of the transmitter module. The first check if a MOSFET
has failed is a visual one. Check for damage to the face of each MOSFET. If there is no visible damage, use
a multimeter to measure the resistance between the two outside pins (1 and 3). If you measure a high reading
(2-3Mohms), the part is fine. If you measure a low reading (less than 100ohms), that part has failed and willl
need to be replaced. At this time please contact the factory for further assistance.
Figure 4 - Transmitter Module
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3-4 CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL
3.2 Communication Issues
If you are having problems with the EchoControl software applications communicating with the Chirp 3260
echosounder, the problemmay be in oneofthreeareas. 1) Theexternal USBconnection, 2) internal USB Hub,
or 3) the installed drivers.
3.2.1 External USB
If upon running of the EchoControl Client or Server software applications on the host PC you experience an
error stating “no USB devices found” please enure that the Chirp 3260 echosounder is powered on and that
theexternal USB connectionontheRear Panel is solid and secure. If the problem continues please try another
possible USB cable or USB port on the host PC.
3.2.2 Internal USB Hub
Each channel of the Chirp 3260 echosounder contains an individual USB Processor Module. All the installed
USB Processor Modules are connected to an internal USB hub. This hub is then connected to the USB input
on the Rear Panel and then onto the host PC. If one or more of the installed modules is not being recognized
by the EchoControl software application there could be an issue with the internal USB Hub. If not all four of
the USB input headers (J201-J204) are being used the channel that is having communication issues could be
reconnected to an available header.
3.2.3 Drivers
Under the Device Manager please ensure that all of the installed channels are being shown as a KEL Sounder
Module and have a red “K” icon. If not please right click on the selected driver and re-install thedriver from
the SounderSuite folder on the host PC (default location C:\Program Files\SounderSuite-USB).
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CHIRP 3260 TROUBLESHOOTING AND MAINTENANCE MANUAL 4-1
4 MAINTENANCE
4.1 Performance Checks
As part of a regular maintenance plan the Chirp 3260 can be interfaced with a Knudsen EchoSim signal
simulator. Using the EchoSim will allow checking of the Chirp 3260 transmitting and receiving capabilities.
Regular checksoftheoverallsystemoutputpower willhelp determineif oneor moreof thetransmitter modules
are not performing at their maximum potential.
The EchoSim will also measure the transducer (or transducer array) impedance at user selected frequency
intervals. This check will help locate a possible aging or possibly failed transducer.
For more information on the Knudsen EchoSim visit website or email [e-mail].
4.2 System Cleaning
4.2.1 Fan Cleaning
Depending on the location of the Chirp 3260 installation it is recommended to routinely remove the top cover
of the unit and clean the three cooling fans.
4.2.2 Contact Cleaning
It is always a good idea to clean the contacts of the internal connections on a regular basis. Any build up of
corrosion on these contacts could affect the performance of the Chirp 3260.
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