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CarNetix PSU-PC12 V1.1 Installation Manual CarNetix PSU-PC12 DC-DC Power Supply (applies to Version 1.0+ hardware) Installation and Operation of the PSU-PC12 with the Xenarc SC3 Version 1.1 June 1, 2006 - 1 -...
(75 Watts). The secondary output is +5V to power USB devices (such as the Audigy 2NX sound USB sound card) with up to 3 amps (15 Watts). The PSU-PC12 can accept battery input as low as 7 volts under full load (90 watts) during cranking while providing a well-regulated output so that your Xenarc SC3 does not crash.
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CarNetix PSU-PC12 V1.1 Installation Manual The PSU-PC12 includes an internal relay to control the ACPI interface of the Xenarc SC3. No more soldering an external relay between the PSU-PC12 and the Xenarc SC3! The PSU-PC12 includes all of the sophisticated features of its predecessors (P1260 and P1280) such as Startup/Shutdown controller, Pulse Start (remotely start the PSU-PC12 with door locks, car alarm, or wireless device), and DelayON (prevents speaker "thump"...
CarNetix PSU-PC12 V1.1 Installation Manual 1.2 Features • 90 Watt Dual Output Regulator • Main output of +12V @ 6.3 Amps • Secondary output of +5V @ 3 Amps • Survives Engine Cranking under full load over entire temperature range •...
Whether you plan to use the on-board Startup/Shutdown Controller (SSC) or not, please read the section describing its operation first, before attempting to install the PSU-PC12. The SSC will affect the power turn-on and turn-off operation whether you use its features or not.
2.2 Setting the Jumpers There are 3 user settable jumpers on the PSU-PC12. Below is a picture of their location on the board. You will need to remove the 4 screws that hold the lid, remove the lid, and disconnect the fan wire to get access the jumpers.
Standby, you can jumper Pin1 to Pin 2 on JP3. This will keep the +5V regulator ON at all times, even if the PSU-PC12 is OFF. Use caution when using this jumper position since it may cause your battery to drain quickly.
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CarNetix PSU-PC12 V1.1 Installation Manual • PRI OUT Jumpering PRI OUT will make the Secondary Output follow the control used to turn ON and OFF the Primary Output. Thus, when the Primary Output is ON, the Secondary Output will also be ON. If the Primary Output is OFF, the Secondary Output will be OFF.
We recommend that you either run another wire directly to the battery, or connect directly to the car chassis for grounding the PSU-PC12. If you run a wire to the battery, make sure it is that same size as your +12V battery wire used in step 1. If you run a ground wire to the car’s chassis, make sure to find a secure ground that is not corroded or painted and use the same size wire as your +12V battery wire used in step 1.
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Step 5 – Test the PSU-PC12 before connecting the Xenarc SC3 It is recommended that you test the output of the PSU-PC12 before proceeding to the next steps. Turn on the ignition and measure the voltage on the center pin of the round power connector as shown in the diagram below.
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CarNetix PSU-PC12 V1.1 Installation Manual The system is now ready to be connected to the other system peripherals. - 13 -...
The Xenarc LCD screen comes from the manufacturer with a cigarette lighter power adapter so that it can be powered separately from the PSU-PC12. However, you can optionally use PSU-PC12 to provide +12V regulated power to both the Xenarc SC3 AND the Xenarc LCD screen.
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CarNetix PSU-PC12 V1.1 Installation Manual 2.5 Connecting to the +5V Secondary Output The PSU-PC12 includes a +5V secondary output that can be used to provide power to peripheral devices such as USB hubs or other USB devices such as the Audigy 2NX USB sound card.
CarNetix PSU-PC12 V1.1 Installation Manual 3.0 Using the Pulse Start Feature The PSU-PC12 includes a new feature that allows you to remotely start and stop the PSU. This feature is called “Pulse Start”. This feature would normally be used in conjunction with a wireless device such as a car alarm with auxiliary inputs/outputs or a WiFi device with Wake-On-LAN (WOL) features.
CarNetix PSU-PC12 V1.1 Installation Manual 3.2.2 Starting the PSU with a pulse When the PSU is in Idle State (both LEDs off) and an externally applied pulse is applied to the Pulse Start input, the PSU will power up normally, as it would if the Ignition line had gone high.
This has several very important ramifications. 1) In Standby your Xenarc SC3 continues to receive +12V power from the PSU-PC12 so that it can retain the processor state in RAM. If for some reason the Xenarc SC3 did not properly shut down when it received the ACPI shutdown pulse from the PSU-PC12, it will continue to draw current from the PSU-PC12.
CarNetix PSU-PC12 V1.1 Installation Manual 4.2.3 Bootup Lockout State After the Xenarc SC3 is powered, the ACPI (PWRON) strobe is sent to the motherboard. At this point the SSC enters a "Lockout" state. In this state the SSC will not allow the PSU to be turned off until after a jumper-selectable Lockout Time period.
Xenarc SC3. 4.3 Fault Indicator LEDS The PSU-PC12 has 2 LEDs that give an indication of the status and states of the SSC. The pattern and blink-rates of these LED have different meanings depending upon what state the SSC is in.
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CarNetix PSU-PC12 V1.1 Installation Manual PSU-PC12 Operation States Normal Operation PSU Output LED1 LED2 State Description PSU is idle and waiting for ignition/accessory switch to be Idle State turned on. It is monitoring battery voltage during this time. PSU is on and waiting for output voltages to stabilize before...
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CarNetix PSU-PC12 V1.1 Installation Manual Fault Conditions PSU Power LED1 LED2 Low Battery/IGN Low battery voltage detected (<10.6V). PSU will not start unless battery voltage is greater than 10.6V. Low battery voltage detected (<10.6V) and IGN/ACC switch is Low Battery/IGN BLINK10%* on, or remote pulse has attempted to start PSU.
3. The RMA Number MUST BE SHOWN CLEARLY ON YOUR SHIPPING LABEL; 4. CarNetix must receive all Returns before a replacement will be sent, unless a valid credit card number has been given to secure payment for the replacement part;...
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CarNetix shall not be liable for risk of loss or damage during shipment of your returned system or parts if you fail to insure the shipment. All products must be shipped back to CarNetix in their original or equivalent packaging.
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