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Thermal Considerations 

 

65 

VL-EPU-4012 Hardware Reference Manual 

 

Heat Sink with Fan Considerations: 

 

The heat sink and fan combination cools the CPU when it is running in high temperature 
environments, or when the application software is heavily utilizing the CPU or video 
circuitry. The fan assists in cooling the heat sink and provides additional air movement 
within the system.  

 

Integrator’s Note:

 The ambient air surrounding the EPU-4012 needs to be maintained 

at 85 °C or below. 

EPU-4012 Thermal Characterization 

The EPU-4012 board underwent the following thermal characterization tests:  

 

Test Scenario 1: Dual core EPU-4012-EAP  

 

Test Scenario 2: Quad core EPU-4012 EDP  

The test results reflect the test environment within the temperature chamber used. This particular 
chamber has airflow of about 0.5 linear meters per second (~100 linear feet per minute). Thermal 
performance can be greatly enhanced by increasing the airflow beyond 0.5 linear meters per 
second.  

The system power dissipation is primarily dependent on the application program; that is, its use 
of computing or I/O resources. The stress levels used in this testing are considered to be at the 
top of the range of a typical user’s needs. 

 

Thermal Test Results 

Test Scenario 1: Dual Core EPU-4012-EAP without HDW-415 fan 

Table 23. Dual Core Hardware Setup 

Test Platform: 

EPU-4012 

s/n: 

172465 

BIOS: 

1009 

BIOS Trip 

Points: 

Critical - 125C, Hot - 119C, Passive - 111C, Active - 60C 

Heat Sink 

Configuration: 

 

Hardware 

Configuration: 

1x DP monitor, 1x USB keyboard & mouse, 1x SATA HDD (6Gbs), 1x USB3 
loopback, 2x USB2 loopback, 1x MPEe-E5E, 4x network 

Software: 

Windows 10 v1607 b14393.0, Intel Passmark BurnIn Test v9.0 Pro b1013 

 

 

Note: 

mPCIe slots were tested with 1 slot populated. 

Содержание Owl

Страница 1: ...dware Reference Manual REV November 2020 Owl VL EPU 4012 Intel Atom dual or quad core E39xx based Embedded Processing Unit featuring error correcting code memory ECC TPM security and extensive on board I O ...

Страница 2: ...o ensure this document is error free VersaLogic makes no representations or warranties with respect to this product and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose VersaLogic reserves the right to revise this product and associated documentation at any time without obligation to notify anyone of such changes Other names and brands may be c...

Страница 3: ... number and e mail address The name of a technician or engineer that can be contacted if any questions arise The quantity of items being returned The model and serial number barcode of each item A detailed description of the problem Steps you have taken to resolve or recreate the problem The return shipping address AS9100 All AS9100 products dispositioned for scrap shall be conspicuously and perma...

Страница 4: ... Use an antistatic foam pad if available The board should also be protected inside a closed metallic antistatic envelope during shipment or storage Note The exterior coating on some metallic antistatic bags is sufficiently conductive to cause excessive battery drain if the bag contacts the bottom side of the Owl Handling Care CAUTION Avoid touching the exposed circuitry with your fingers when hand...

Страница 5: ...s Shipped Configuration 17 Jumper Configuration Summary 17 Board Features 18 CPU 18 CPU Die Temperature 18 System RAM 18 Flash Storage 18 I O Interfaces 18 Real Time Clock RTC 19 Watchdog Timer 19 External Connectors 20 Baseboard Connector Locations 20 Cabling 21 Power Requirements 21 Power Delivery Considerations 21 Power Button 22 Supported Power States 22 Battery Power Options 23 External Speak...

Страница 6: ...es 45 Mini DisplayPort Connector 45 VGA Output 47 LVDS Interface 48 LVDS Flat Panel Display Connector 48 LVDS Backlight Connector 50 Network Interfaces 51 Ethernet Connector 51 Cabling 52 Ethernet Status LEDs 53 VL CBR 4005B Paddleboard 54 VL CBR 4005B Connectors and Indicators 54 User I O Connector 55 Cabling 56 On board Battery 56 Auxiliary I O Connector 57 Dimensions and Mounting Holes 58 VL CB...

Страница 7: ...tus Indicator LEDs 26 Figure 12 Location of the Power good Fault Indicator LED 27 Figure 13 Location of the SATA Connector 28 Figure 14 Location of the microSD Socket 29 Figure 15 Location of the USB Ports 30 Figure 16 Location of Mini PCIe Sockets 31 Figure 17 Mini PCIe Wireless Status LEDs 34 Figure 18 Location of the SATA mSATA Activity LED 35 Figure 19 Location and Pin Orientation of the User ...

Страница 8: ...LEDs 34 Table 8 User I O Connector Pinout and Pin Orientation 37 Table 9 Analog to Digital Input Connector Pinout 39 Table 10 SPX Connector Pinout 41 Table 11 COM1 COM2 Connector Pinout 43 Table 12 COM3 COM4 Connector Pinout 43 Table 13 Mini DisplayPort Connector Pinout 46 Table 14 LVDS Flat Panel Display Connector Pinout 49 Table 15 LVDS Backlight Connector Pinout 50 Table 16 Ethernet Connector P...

Страница 9: ...Introduction 9 VL EPU 4012 Hardware Reference Manual Introduction Figure 1 The Owl VL EPU 4012 ...

Страница 10: ...8 GB 40 to 85 C Operating Temperature 5th Generation Intel Atom processor Apollo Lake E3950 quad core or E3930 dual core TPM 2 0 security On board power conditioning 8 to 30 volt input Hardware based security COMe Compact size 95 x 95mm Low power 8 W typ Up to 8 GB of soldered on Error Correcting Code ECC memory is available for highly reliable applications ECC memory is beneficial in environments...

Страница 11: ...Introduction 11 VL EPU 4012 Hardware Reference Manual Block Diagram Figure 2 Owl VL EPU 4012 Block Diagram ...

Страница 12: ...Introduction VL EPU 4012 Hardware Reference Manual 12 Dimensions and Mounting Owl Dimensions Figure 3 Owl Dimensions and Mounting Holes Not to scale All dimensions in millimeters ...

Страница 13: ...Introduction 13 VL EPU 4012 Hardware Reference Manual Mounting Plate Dimensions Figure 4 Mounting Plate Dimensions Not to scale All dimensions in millimeters ...

Страница 14: ... You will also need an operating system OS installation CD ROM Basic Setup The following steps outline the procedure for setting up a typical development system The Owl should be handled at an ESD workstation or while wearing a grounded antistatic wrist strap Before you begin unpack the Owl and accessories Verify that you received all the items you ordered Inspect the system visually for any damag...

Страница 15: ... paddleboard to the baseboard s User I O connector Connect a USB keyboard and USB mouse to the USB Type A connectors on the VL CBR 4005B paddleboard Attach a USB CD ROM drive to one of the USB Type A connectors on the VL CBR 4005B paddleboard 2 Connect Power Source Plug the power adapter cable VL CBR 0809 into the main power connector on the baseboard Attach the motherboard connector of the ATX po...

Страница 16: ...etrieve those settings from cleared or corrupted CMOS RAM or battery failure All BIOS defaults can be changed except the time and date BIOS defaults are updated using the BIOS Update Utility CAUTION If BIOS default settings make the system unbootable and prevent the user from entering the BIOS Setup utility the Owl must be serviced by the factory Default BIOS Setup Values After CMOS RAM clears the...

Страница 17: ...OM1 Endpoint termination Jumper In Endpoint termination for RS 485 or RS 422 Jumper Out Not terminated RS 232 default V2 1 2 COM3 Endpoint Termination Jumper In Endpoint termination for RS 485 or RS 422 Jumper Out Not terminated RS 232 default 3 4 COM4 Endpoint termination Jumper In Endpoint termination for RS 485 or RS 422 Jumper Out Not terminated RS 232 default V3 1 2 Primary Backup BIOS Select...

Страница 18: ...tributes of the processor It implements thermal based clock throttling and thermal based speed step transitions There is one thermal sensor on the processor that triggers Intel s thermal monitor the temperature at which the thermal sensor triggers the thermal monitor is set during the fabrication of the processor Triggering of this sensor is visible to software by means of the thermal interrupt LV...

Страница 19: ...ime Clock RTC The Owl features a real time clock calendar RTC circuit The Owl supplies RTC voltage in S5 S3 and S0 states but requires an external 2 75 V to 3 3 V battery connections Refer to the section titled Battery Power Options on page 23 for more information The BIOS Setup utility sets the RTC Watchdog Timer The Owl has a watchdog timer that contains a selectable pre scaler approximately 1 a...

Страница 20: ...Board Features VL EPU 4012 Hardware Reference Manual 20 External Connectors Baseboard Connector Locations Figure 7 Baseboard Connector Locations ...

Страница 21: ...x 055959 0830 Molex 051353 0800 Power Requirements The Owl requires a single 8 to 30 VDC supply capable of providing at least 35 W average power that can also provide a peak power of 50 W The input DC supply creates both the standby and payload voltages provided to the CPU module The exact power requirements for the Owl depend on several factors including CPU configuration the number of cores CPU ...

Страница 22: ...n Windows to enter an S3 power state Sleep Standby or Suspend to RAM an S4 power state Hibernate or Suspend to Disk or an S5 power state Shutdown or Soft Off This connector uses IEC 61000 4 2 rated TVS components to help protect against ESD damage A power button is provided on the VL CBR 4005B paddleboard Refer to the chapter titled VL CBR 4005B Paddleboard beginning on page 54 for more informatio...

Страница 23: ... settings in non volatile RAM The Owl has multiple options for providing battery power Use an external battery the VL CBR 0203 for example connected to the board through the battery connector Use the battery supplied with the CBR 4005B paddleboard The figure below shows the location and pin orientation of the battery connector Figure 8 Location and Pin Orientation of the Battery Connector ...

Страница 24: ...5B paddleboard provides a piezoelectric speaker Figure 28 on page 54 shows the location of the piezoelectric speaker on the VL CBR 4005B paddleboard Push button Reset The User I O connector shown in Figure 19 on page 36 includes an input for a push button reset switch Shorting pin 18 to ground causes the Owl to reboot This must be a mechanical switch or an open collector or open drain active switc...

Страница 25: ...ocation and Pin Orientation of the CPU Fan Connector The table below provides the pinout of the CPU fan connector Table 5 CPU Fan Connector Pinout Pin Signal 1 Ground 2 12 VDC Note 3 FAN_TACH 4 FAN_CONTROL Note The maximum current is 0 175 A Cabling If your application requires a custom cable the following information will be useful EPU 4012 Board Connector Mating Connector Molex 502386 0470 Molex...

Страница 26: ...yellow dual LED D10 Link activity green for Ethernet port 0 D11 Link activity green for Ethernet port 1 D12 Wireless WAN LAN activity for module installed in Mini PCIe Socket 1 Dual LED D13 Status of power and wireless PAN activity for module installed in Mini PCIe Socket 1 Dual LED D14 Wireless WAN LAN activity for module installed in Mini PCIe Socket 2 Dual LED D15 Status of power and wireless P...

Страница 27: ...ow LED provides the following status Green indicates power good when the Owl in an S0 state When in sleep modes the LED pulses every 2 seconds Yellow indicates a fault If this LED remains lit after power cycling the Owl contact VersaLogic Customer Support Figure 12 Location of the Power good Fault Indicator LED ...

Страница 28: ... angle connector with latching capability The ATX power supplies Power to the SATA drive Note that the standard SATA drive power connector is different from the common 4 pin Molex connector used on IDE drives Most current ATX power supplies provide SATA connectors and many SATA drives provide both types of power connectors If the power supply you are using does not provide SATA connectors adapters...

Страница 29: ...socket on the top side of the baseboard The VL F41 series of microSD cards provide solid state storage of 2 GB 4 GB or 8 GB Figure 14 Location of the microSD Socket eMMC Flash The Owl provides on board eMMC Flash storage on certain models of the product Specifically VL EPU 4012 EAP 8 GB VL EPU 4012 EDP 32 GB ...

Страница 30: ...tion of the USB Ports Warning The micro USB 3 0 connector can be damaged that is detached from the board if an inserted USB cable is removed by pulling up and away from the board To reduce the risk of damaging the connector and the board pull the cable straight out of the connector also do not rock or wiggle the cable back and forth to loosen it from the connector ...

Страница 31: ...rmation on Mini PCIe modules available from VersaLogic contact Sales VersaLogic com The VL MPEs F1E series of mSATA modules provide flash storage of 4 GB 16 GB or 32 GB To secure a Mini PCIe card or mSATA module to the on board standoffs use two M2 5 x 6 mm pan head Philips nylon screws These screws are available in quantities of 10 in the VL HDW 108 hardware kit from VersaLogic Integrator s Notes...

Страница 32: ...onnected 14 NC Not connected Reserved Not connected 15 GND Ground GND Ground 16 NC Not connected Reserved Not connected 17 NC Not connected Reserved Not connected 18 GND Ground GND Ground 19 NC Not connected Reserved Not connected 20 W_DISABLE Wireless disable Reserved Not connected 21 GND Ground GND Ground 22 PERST Card reset Reserved Not connected 23 PERn0 PCIe receive B Host receiver diff pair ...

Страница 33: ...dule versus a Mini PCIe card 2 This pin is not grounded on the Owl to make it available for mSATA module detection 3 This signal drives the blue LED activity indicator shown in Figure 18 This LED lights with mSATA disk activity if supported by the mSATA module 4 Some Mini PCIe cards use this signal as a second Mini PCIe card wireless disable input On the Owl this signal is available for use for mS...

Страница 34: ...mitting The next table lists the states of the LEDs The figure below the table shows their location on the Owl Table 7 Mini PCIe Card Wireless Status LEDs LED Color State Description D12 and D14 Green On Wireless WAN active Off Wireless WAN inactive Yellow On Wireless LAN active Off Wireless LAN inactive D13 and D15 Green On Wireless PAN active Off Wireless PAN inactive Yellow On Minicard power is...

Страница 35: ...ctivity LED The figure in this section shows the location of the SATA mSATA activity blue LED This LED indicates activity on either the SATA or the mSATA interface Not all mSATA drives provide this disk activity signal Figure 18 Location of the SATA mSATA Activity LED ...

Страница 36: ... Os 16 9 The eight GPIO lines on the paddleboard each have an alternate mode accessible using the FPGA s AUXMOD1 register Three LEDs two Ethernet link status LEDs and a programmable LED Two I2 C signals clock and data Push button power switch Push button reset switch Speaker output This connector uses IEC 61000 4 2 rated TVS components to help protect against ESD damage This figure shows the locat...

Страница 37: ...ort 3 and 4 3 This 3 3 V power goes off in sleep modes The SPKR uses this power as should the PLED there is no requirement for PLED to use this power but the VL CBR 4005B paddleboard does 4 This 3 3 V power can be turned on or off similar to the 3 3V power to the Mini Card via the FPGA can go off in sleep modes or always stay on by default it goes off in sleep modes It is used for the 10 kΩ pullup...

Страница 38: ...onverter Interface The Analog to Digital converter interface provides eight single ended analog input channels Figure 20 shows the location and pin orientation of the Analog to Digital input connector Figure 20 Location and Pin Orientation of the Analog to Digital Input Connector ...

Страница 39: ... Datasheet for programming information This table provides the pinout of the Analog to Digital Input connector Table 9 Analog to Digital Input Connector Pinout Pin Signal Pin Signal 1 Analog Input 1 2 Analog Input 2 3 Analog Ground 4 Analog Ground 5 Analog Input 3 6 Analog Input 4 7 Analog Ground 8 Analog Ground 9 Analog Input 5 10 Analog Input 6 11 Analog Ground 12 Analog Ground 13 Analog Input 7...

Страница 40: ...a CBR 0901 cable The SPX interface provides the standard serial peripheral interface SPI signals CLK MISO and MOSI as well as two chip selects SS0 and SS1 The 5 V power provided to pin one of the SPX connector is protected by a 1 A resettable fuse This figure shows the location and pin orientation of the SPX connector Figure 21 SPX Connector Location and Pin Configuration ...

Страница 41: ...on on the Owl supports chip selects The master device initiates all SPI transactions A slave device responds when its chip select is asserted and it receives clock pulses from the master All four common SPI modes are supported with clock polarity and clock idle state controls The SPI clock is derived from a 33 MHz PCI clock and can be software configured to operate at the following frequencies 8 2...

Страница 42: ... be operated in RS 232 RS 422 or RS 485 mode IRQ lines are chosen in the BIOS Setup utility The UARTs are 16550 based serial ports and are implemented in the FPGA The figure on this page shows the location and pin orientation of the two serial I O connectors Figure 22 Location and Pin Orientation of the Serial I O Connectors ...

Страница 43: ...TXD2_N 8 CTS2 RXD2_P 9 RXD2 RXD2_N 10 GND GND Table 12 COM3 COM4 Connector Pinout Pin RS 232 Signal RS 422 RS 485 Signal Port 1 RTS3 TXD3_P COM3 2 TXD3 TXD3_N 3 CTS3 RXD3_P 4 RXD3 RXD3_N 5 GND GND 6 RTS4 TXD4_P COM4 7 TXD4 TXD4_N 8 CTS4 RXD4_P 9 RXD4 RXD4_N 10 GND GND Cabling An adapter cable part number CBR 1014 is available for routing the serial I O signals to 9 pin D sub connectors This is a 1...

Страница 44: ...ks on page 17 for details The termination resistor should only be enabled for RS 485 or RS 422 endpoint stations and not for intermediate stations Termination must not be used for RS 232 Console Redirection The Owl can be configured for remote access by redirecting the console to a serial communications port The BIOS Setup utility and some operating systems such as MS DOS can use this console for ...

Страница 45: ...sts of three interfaces Main Link transfers high speed isochronous video and audio data Auxiliary channel used for link management and device control the EDID is read over this interface Hot Plug Detect indicates that a cable is plugged in The DisplayPort interface supports Audio signaling DP mode allowing connection to an HDMI device through a passive adapter Passive means that the adapter does n...

Страница 46: ...Connector Table 13 Mini DisplayPort Connector Pinout Pin Signal Pin Signal 1 GND 2 HOT PLUG DETECT 3 ML_LANE0_P 4 CONFIG 1 5 ML_LANE0_N 6 CONFIG 2 7 GND 8 GND 9 ML_LANE1_P 10 ML_LANE3_P 11 ML_LANE1_N 12 ML_LANE3_N 13 GND 14 GND 15 ML_LANE2_P 16 AUX_CH_P 17 ML_LANE2_N 18 AUX_CH_N 19 GND 20 DP_POWER 3 3V ...

Страница 47: ...dware Reference Manual VGA Output A VGA monitor can be attached to the Mini DisplayPort connector using the VL CBR 2032 Mini DisplayPort to VGA adapter similar to the one shown below Figure 24 VL CBR 2032 Mini DisplayPort to VGA Adapter ...

Страница 48: ... DE on the 4 differential data output pairs The LVDS interface supports a maximum resolution of 1200 x 800 60 Hz The figure below shows the location of the LVDS display connector as well as the location and pin orientation of the LVDS back light connector The BIOS Setup utility provides several options for standard LVDS flat panel types If these options do not match the requirements of the panel y...

Страница 49: ...und 18 GND Ground 19 3 3V 3 3 V Protected 20 3 3V 3 3 V Protected The 3 3V power provided to pins 19 and 20 is protected by a software controllable power switch 1 Amp max The LVDD_EN signal controls this switch from the LVDS interface controller in the CPU Cabling The following LVDS cables are available for use with the Owl board VL CBR 2015 a 20 inch 24 bit LVDS 1mm Hirose cable VL CBR 2016 a 20 ...

Страница 50: ...LVDS_BKLT_CTRL LVDS backlight control 5V TTL level signal by default but will operate at higher voltages if the LVDS_BKLT_PWR is provided This is a PWM signal and the duty cycle can be set in the BIOS Setup utility 4 LVDS_BKLT_LOGIC_PWR Optional backlight logic power Can range from 5V to 14V and sets the high value on the LVDS_BKLT_EN and LVDS_BKLT_CTRL signals On board 5V power is used when this ...

Страница 51: ...tes connection speed Drivers are readily available to support a variety of operating systems For more information on this device refer to the Intel I210 Ethernet Controller datasheet Ethernet Connector The Ethernet connector provides access to the Ethernet ports 0 and 1 The connector uses IEC 61000 4 2 rated TVS components to help protect against ESD damage The next figure shows the location and p...

Страница 52: ...Rx BI_DC 7 Auto Switch Tx or Rx BI_DA 8 Auto Switch Tx or Rx BI_DA Port 1 9 Auto Switch Tx or Rx BI_DD 10 Auto Switch Tx or Rx BI_DD Port 1 11 Auto Switch Tx or Rx BI_DB 12 Auto Switch Tx or Rx BI_DB 13 Auto Switch Tx or Rx BI_DC 14 Auto Switch Tx or Rx BI_DC 15 Auto Switch Tx or Rx BI_DA 16 Auto Switch Tx or Rx BI_DA Cabling An adapter cable part number CBR 1604 is available This is a 12 inch 16 ...

Страница 53: ... Reference Manual Ethernet Status LEDs The figure below shows the location of the Ethernet status LEDs LED D10 indicates link activity on Ethernet port 0 LED D11 indicates link activity on Ethernet port 1 Figure 27 Onboard Ethernet Status LEDs ...

Страница 54: ...are Reference Manual 54 VL CBR 4005B Paddleboard VL CBR 4005B Connectors and Indicators The next figure shows the locations of the connectors switches and LEDs on the VL CBR 4005B paddleboard Figure 28 VL CBR 4005B Connectors Switches and LEDs ...

Страница 55: ...Table 17 User I O Connector Pinout Pin Signal Pin Signal 1 5 V 2 GND 3 USB1_P 4 USB2_P 5 USB1_N 6 USB2_N 7 5V 8 GND 9 USB3_P 10 USB4_P 11 USB3_N 12 USB4_N 13 3 3 V Note 1 14 GND 15 SPKR 16 PLED 17 PWR_BTN 18 RST_BTN 19 GND 20 GND 21 I2C Clock 22 V_BATT 23 I2C Data 24 V_BATT RETURN 25 GND 26 GND 27 GPIO1 28 GPIO2 29 GPIO3 30 GPIO4 31 GND 32 GND 33 GPIO5 34 GPIO6 35 GPIO7 36 GPIO8 37 3 3 V Note 2 38...

Страница 56: ...le part number CBR 4005A is available for connecting the VL CBR 4005B paddleboard to the EPU 4012 This is a 12 inch Pico Clasp 40 pin to 40 pin cable If your application requires a custom cable the following information will be useful CBR 4005B Board Connector Mating Connector Molex 501571 4007 Molex 501189 4010 On board Battery CAUTION To prevent shorting premature failure or damage to the Lithiu...

Страница 57: ...auxiliary I O connector Figure 30 Location and Pin Orientation of Auxiliary I O Connector Table 18 Auxiliary I O Connector Pinout Pin Signal Pin Signal 1 I2C Clock 2 V_BATT 3 I2C Data 4 V_BATT_RETURN 5 GND 6 GND 7 GPIO1 8 GPIO2 9 GPIO3 10 GPIO4 11 GND 12 GND 13 GPIO5 14 GPIO6 15 GPIO7 16 GPIO8 17 3 3 V 18 GND 19 Ethernet Port 0 LED 20 Ethernet Port 1 LED ...

Страница 58: ...VL CBR 4005B Paddleboard VL EPU 4012 Hardware Reference Manual 58 Dimensions and Mounting Holes Figure 31 VL CBR 4005B Dimensions and Mounting Holes ...

Страница 59: ...d and 12 inch cable are available from VersaLogic part number VL CBR 2005 The next figure shows the locations and pin orientations of the connectors on the CBR 2004B paddleboard Figure 32 CBR 2004B Connectors J5 Main I O connector mates with the Owl s analog to digital input connector J4 Reserved J3 Analog inputs 6 8 J2 Analog inputs 4 5 J1 Analog inputs 1 3 ...

Страница 60: ...ts Main I O Connector The main I O connector mates with the Owl s analog to digital input connector The next figure shows the location and pin orientation of the main I O connector Figure 34 Location and Pin Orientation of the Main I O Connector Table 19 Main I O Connector Pinout Pin Signal Pin Signal 1 Analog Input 1 2 Analog Input 2 3 Analog Ground 4 Analog Ground 5 Analog Input 3 6 Analog Input...

Страница 61: ...d 18 Digital Ground 19 Reserved 20 Reserved Cabling An adapter cable is bundled with the VL CBR 2004B paddleboard This is a 12 inch Pico Clasp 20 pin to 20 pin cable If your application requires a custom cable the following information will be useful CBR 4005B Board Connector Mating Connector Molex 501571 2007 Molex 501189 2010 Dimensions and Mounting Holes Figure 35 CBR 2004B Dimensions and Mount...

Страница 62: ...plement a thermal solution using the accessories available from VersaLogic or develop their own thermal solution that attaches to the heat plate suitable for environments in which the EPU 4012 will be used As stated above the thermal solution must be capable of keeping the top surface of the heat place at or below 90 ºC and the air surrounding the components in the assembly at or below 85 ºC The h...

Страница 63: ...e requirement as needed CPU Thermal Trip Points The CPU cores in the Owl have their own thermal sensors Coupled with these sensors are specific reactions to three thermal trip points Table 20 describes the three thermal trip points Note that these are internal temperatures that are about 10 ºC above the heat plate temperature Table 20 CPU Thermal Trip Points Trip Point Description Passive Note 1 A...

Страница 64: ... With Heat Plate With Heat Sink HDW 406 With Heat Sink Fan HDW 406 HDW 415 VL EPU 4012 EAP 40 to 85 C 40 to 85 C 40 to 85 C VL EPU 4012 EDP 40 to 85 C 40 to 85 C 40 to 85 C Overall Restrictions and Conditions Ranges shown assume less than 90 CPU utilization Keep the maximum CPU core temperature below 100ºC The ambient air surrounding the EPU 4012 needs to be maintained at 85 ºC or below This inclu...

Страница 65: ...is particular chamber has airflow of about 0 5 linear meters per second 100 linear feet per minute Thermal performance can be greatly enhanced by increasing the airflow beyond 0 5 linear meters per second The system power dissipation is primarily dependent on the application program that is its use of computing or I O resources The stress levels used in this testing are considered to be at the top...

Страница 66: ... with their temperatures below 100 ºC Test Scenario 2 Quad Core EPU 4012 EDP HDW 408 Heat Sink with without HDW 415 Fan Table 25 Quad Core Hardware Setup Test Platform EPU 4012 s n 172460 BIOS 1009 BIOS Trip points Critical 125C Hot 119C Passive 111C Active 60C Heat Sink Configuration Hardware Configuration 1x DP monitor 1x USB keyboard mouse 1x SATA HDD 6Gbs 1x USB3 loopback 2x USB2 loopback 2x M...

Страница 67: ... Heat plate down in relation to the enclosure Heat plate up These assembly methods are shown in Figure 36 and Figure 37 respectively Heat Plate Down The next figure a representative image of a similar VersaLogic product shows the assembly Use this assembly method if you are attaching the Owl to a larger thermal solution such as a metal chassis enclosure Figure 36 An Example of Hardware Assembly wi...

Страница 68: ...seboard to the enclosure with standoffs Installing the VL HDW 416 Passive Heat Sink 1 Apply the Arctic Silver Thermal Compound VL HDW 401 Apply the thermal compound to the heat plate using the method described on the Arctic Silver website http www arcticsilver com 2 Position the passive heat sink Using Figure 38 as a guide align the five mounting holes of the heat sink with the heat plate Orient t...

Страница 69: ...Thermal Considerations 69 VL EPU 4012 Hardware Reference Manual Figure 38 Installing the Passive Heat Sink ...

Страница 70: ...t sink fan with the four holes in the passive heat sink Position the fan so that its power cable can easily reach its mate 2 Secure the fan to the heat sink Affix the heat sink fan using four M3 pan head screws Using a torque screwdriver tighten the screws to 4 0 inch pounds 3 Connect power to the fan Connect the fan s power cable to J18 on the EPU 4012 Figure 39 An Example of Installed Heat Sink ...

Страница 71: ...ally have the thermal compound applied to where the pipes contact both the heat plate and the block 2 Position the heat pipe block Using Figure 40 as a guide align the six mounting holes of the heat pipe block with the heat plate Figure 40 shows the heat pipe block installed 3 Secure the heat pipe block to the heat plate Affix the heat pipe block to the heat plate using six M2 5 0 45 x 10mm Philli...

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