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[CA] Possible CPT-200 Transducer Low Voltage Issue
03-19-18, 08:06 AM (This post was last modified: 03-19-18 10:23 AM by Chuck - Raymarine - Moderator.)
Post: #1
[CA] Possible CPT-200 Transducer Low Voltage Issue
This post is being made to inquire if a low transducer voltage alert message at startup of a CP-200 sounder module / CPT-200 transducer should be a concern. For approximately 60 second after start-up my multi-function display (MFD) shows a low transducer voltage alert message while at the same time the CPT-200 LED indicator flashes the five amber alert for low voltage alert.

After 60 seconds passes, the alert message disappears, the CPT-200 LED flashes normal operation green, and the MFD shows a normal transducer display (note this is a new installation on land and has not been water tested yet). Voltage at a switch serving the CPT-200 of 12.77 volts was measured more than 60 seconds after startup. “Round-trip” wiring is less than 20 feet with 12 AWG wire.

The question is should this short alert message be a concern or is this a normal message at start-up.
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03-19-18, 10:24 AM
Post: #2
RE: [CA] Possible CPT-200 Transducer Low Voltage Issue
Welcome to the Raymarine Forum Tom,

What model of MFD is the CPT-200 interfaced to?
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03-19-18, 12:01 PM
Post: #3
RE: [CA] Possible CPT-200 Transducer Low Voltage Issue
The CP-200 interfaces with two e125 MFD's through a seatalkhs switch.
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03-19-18, 12:22 PM
Post: #4
RE: [CA] Possible CPT-200 Transducer Low Voltage Issue
Tom,

The symptom which you have described is normal. The specified alert will be displayed if CP200 is powered ON after the MFD has completed its startup initialization. Clearing the alert will then permit SideVision sonar imaging to proceed. This message would not typically be encountered if the MFDs and CP200 were switched ON at the same time.
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03-19-18, 12:32 PM
Post: #5
RE: [CA] Possible CPT-200 Transducer Low Voltage Issue
Yes, this is the situation where the system (e125's AIS, radar, etc.) is powered up first. After system power up, three sonar modules are powered up (DSM300, CP-200, and CP-570). Odd that neither the DSM300 or the CP-570 produce this alert message; but okay.
Thanks for resolving this question.
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03-19-18, 01:20 PM
Post: #6
RE: [CA] Possible CPT-200 Transducer Low Voltage Issue
You're welcome.
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