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BERKSHIRE PRODUCTS PC Watchdog Hardware Manual Download Page 2

Table of Contents

1.  INTRODUCTION   .....................................................................................................................................   1

2.  OPERATION   ............................................................................................................................................   3

3.  DIP SWITCH SETTINGS   ........................................................................................................................   5

3.1  M

ODE

 S

WITCHES

 - SW1 & SW2   ...................................................................................................................   5

3.2  S

WITCH

 #1 - P

ASSIVE

 M

ODE

   ...........................................................................................................................   5

3.3  S

WITCH

 #2 - A

CTIVE

 M

ODE

   ............................................................................................................................   5

3.4  S

WITCH

 #3 - B

UZZER

 D

ISABLE

   ........................................................................................................................   5

3.5  S

WITCH

 #4 - O

VER

- 

TEMP

 R

ESET

   ....................................................................................................................   6

3.6  S

WITCH

 #5 - P

OWER

 O

N

 D

ELAY

 (POD)   .........................................................................................................   6

3.7  S

WITCHES

 #6-8 - W

ATCHDOG

 D

ELAY

 T

IME

   .....................................................................................................   6

4.  SUPPLIED COMPONENTS   ...................................................................................................................   7

4.1  I

NSTALLATION

 

OF

 S

UPPLIED

 C

OMPONENTS

   ........................................................................................................   7

4.2   USB  I

NTERNAL

 C

ONNECTION

 H

EADER

   ...........................................................................................................   8

4.2.1  I

NTERNAL

 M

OUNTING

   ....................................................................................................................................   8

4.3   D

RIVER

 I

NFORMATION

   ....................................................................................................................................   8

4.4   A

UXILIARY

 R

ELAY

    ........................................................................................................................................   9

4.5   E

XTERNAL

 D

IGITAL

 I

NPUT

 (R

EV

-C B

OARDS

)   ..................................................................................................   9

5.  LEDS AND BUZZER    ............................................................................................................................   10

5.1  D

UAL

 LED

S

   ................................................................................................................................................   10

5.2  SMT USB A

CTIVE

   .....................................................................................................................................   10

5.3  B

UZZER

   .......................................................................................................................................................   10

6.   WATCHDOG PROGRAMS, DRIVERS AND API   ............................................................................   11

6.1  BPI_WD

OG

_C

ONFIG

 P

ROGRAM

   ..................................................................................................................   11

6.2  BPI_WD

OG

_T

ICKLE

 P

ROGRAM

   ...................................................................................................................   11

6.3  D

RIVERS

   ......................................................................................................................................................   11

6.4  DLL & S

AMPLE

 C

ODE

   ................................................................................................................................   11

6.5  W

EB

 S

ITE

 D

OWNLOADS

   ................................................................................................................................   11

7.   ORIGINAL DISTRIBUTION FILES   ..................................................................................................   12

8.  APPENDIX A - SPECIFICATIONS   .....................................................................................................   13

9.  APPENDIX B - WARRANTY   ...............................................................................................................   14

10.  APPENDIX C - SERVICE AND TECH SUPPORT   ..........................................................................   15

10.1  C

ALLING

 T

ECH

 S

UPPORT

   .............................................................................................................................   15

10.2  P

RODUCT

 R

ETURNS

   .....................................................................................................................................   15

11.  APPENDIX D - AGENCY APPROVALS   ...........................................................................................   16

11.1  FCC - C

LASS

 A   ........................................................................................................................................   16

i

Summary of Contents for PC Watchdog

Page 1: ...USB PC Watchdog Hardware Manual BERKSHIRE PRODUCTS INC Phone 770 271 0088 http www berkprod com Rev 2 30 Copyright 2001 2011 PC Watchdog is a registered trademark of Berkshire Products ...

Page 2: ... 4 2 1 INTERNAL MOUNTING 8 4 3 DRIVER INFORMATION 8 4 4 AUXILIARY RELAY 9 4 5 EXTERNAL DIGITAL INPUT REV C BOARDS 9 5 LEDS AND BUZZER 10 5 1 DUAL LEDS 10 5 2 SMT USB ACTIVE 10 5 3 BUZZER 10 6 WATCHDOG PROGRAMS DRIVERS AND API 11 6 1 BPI_WDOG_CONFIG PROGRAM 11 6 2 BPI_WDOG_TICKLE PROGRAM 11 6 3 DRIVERS 11 6 4 DLL SAMPLE CODE 11 6 5 WEB SITE DOWNLOADS 11 7 ORIGINAL DISTRIBUTION FILES 12 8 APPENDIX A...

Page 3: ...11 2 CE 16 i ...

Page 4: ...software Audible alarm for the temperature trip point Programmable options allow the Watchdog to hold the PC in reset after the upper trip occurs Also has an active Mode that allows a user program to have additional control over the Watchdog Two externally visible LEDs show status of Watchdog Watchdog has a second relay available on an external jack to control other devices such as triggering an a...

Page 5: ...of all manuals and sample code can be found on our site at http www berkprod com If you have any questions corrections or feedback about this manual please contact us at http www berkprod com Other_Pages Contact_Us aspx 2 ...

Page 6: ... Watchdog timer expires the PC Watchdog will start its reset sequence on the PC The two LEDs on the Watchdog are used for status indication The top LED provides the arming status of the Watchdog by varying the rate at which the LED flashes When the Watchdog resets the PC it will turn on the bottom LED and leave it on which provides an indication that at least one Watchdog reset has occurred possib...

Page 7: ...ailable between 30 C 86 F and 40 C 40 F At the first trip point the PC Watchdog board will activate the Aux relay if the option is selected It can also activate the buzzer At the second low temperature trip point the PC Watchdog can optionally activate the reset relay to stop the PC from further processing The new feature is available with a DLL function call or by using BPI_WDog_Config program 4 ...

Page 8: ...h modes together 3 2 Switch 1 Passive Mode When this mode is active the Watchdog will monitor the USB for a 32mS polling interrupt packet from the host PC Each packet will cause the Watchdog to reset its timeout count If the PC locks up and the packets stop then the Watchdog will count down to zero and reset the PC We recommend that you no longer use this option There is a program on the CD that w...

Page 9: ...inutes to complete the re boot which can be accommodated by turning on this switch In Passive or Active Mode the Watchdog will delay starting the timeout counter until it sees the first activity in either of these modes NOTE Be Careful with this switch If it is on and the PC locks up during reset then the board would not get tickled since no program would load This would leave the PC permanently f...

Page 10: ...up and after each reset of the PC Disconnect the PC reset cable from the motherboard Plug this cable onto the J1 J5 on Rev B header labeled Reset SW in the upper left corner of the Watchdog board Plug the supplied reset cable onto J2 J4on Rev B labeled CPU Reset on the Watchdog board and plug the other end onto the original reset header on the motherboard Connect the External type USB cable to Hos...

Page 11: ...ge could be done to the Watchdog or the motherboard Do not use the regular USB cable if using the motherboard header connection 4 2 1 Internal Mounting The USB can be mounted internally by removing the standard PC bracket and using 4 40 hardware There is a mechanical drawing file on the CD which shows the dimensional information for the mounting holes on the board The board is light enough to be i...

Page 12: ...t Buy etc and cut off one end Strip back the insulation and use the two inner conductors 4 5 External Digital Input Rev C Boards This input is on the lower stereo jack at the bottom of the bracket on Rev C boards The input accepts levels from 0 0 to 5 0V and it has a l 0K pull up resistor to keep the input high when it is unconnected The pull up also allows the user to connect a dry contact switch...

Page 13: ...g power on the PC pressing the front panel reset button or by a user program If the watchdog board is receiving re triggers then it will flash the bottom LED for 100 milli seconds during each second 5 2 SMT USB Active This surface mount LED is located next to the USB socket on the board This LED will flash rapidly when you first plug in the USB to indicate the enumeration process After the device ...

Page 14: ...cation It is in the BPI_WDog_Tickle directory on the CD as a msi file that will install it automatically It is used to tickle the watchdog and keep it from resetting the PC until the PC actually freezes 6 3 Drivers Any drivers that your board may need are on the Drivers directory on the CD 6 4 DLL Sample Code The new DLL for all the watchdogs is called Wdog_Univrsl dll Sample code and the DLL is p...

Page 15: ...re shipped with this PC Watchdog are still on the CD under the main directory x_OriginalArchive_WDog_Files These are provided for continuing support for prior users New users should not use these since they are no longer supported and will not be updated 12 ...

Page 16: ...limits especially at lower temperatures These temperature limits are those specified by the manufacturers of the integrated circuits Auxiliary Relay SPST 1 form a 24V 0 25A max 250mA This relay has contacts that are available on the 1 8 3 5mm Stereo jack above the two LEDs The tip of the plug is one relay contact and the ring second terminal on the plug is the other relay contact The major or last...

Page 17: ...model at our option without charge for either parts or labor This warranty does not apply to defects due directly or indirectly to misuse abuse negligence accident repairs or alterations made by the customer or another party UNDER NO CIRCUMSTANCES WILL BERKSHIRE PRODUCTS Inc BE LIABLE IN ANY WAY TO ANY PURCHASER FOR DAMAGES LOST REVENUE LOST WAGES OR ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES A...

Page 18: ...turns Please call our tech support personnel before returning a product Many times the problem can be corrected over the phone If the tech support representative determines that your product must be returned they will assign you a RMA Package the product in a secure container and return it to us freight prepaid We will not accept COD freight charges Indicate the RMA on the package or shipping labe...

Page 19: ... such interference in a commercial installation If this equipment does cause interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient the receiving antenna Relocate the computer with respect to the receiver Move the computer away from the rece...

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