Summary of Contents for CheckSum G-50
- Page 1 Model G-50 Cable/Continuity Tester INSTRUCTION MANUAL CheckSum LLC P.O. Box 3279 6120 195th Street NE Arlington, WA 98223 (360) 435-5510 Web Site: www.checksum.com...
- Page 2 P/N 4400-001 Revision 1/92 Copyright © 1988-1992 - CheckSum LLC - all rights reserved Litho in U.S.A. Specifications and operational characteristics of the System are subject to change. Check- Sum LLC cannot take responsibility for any direct or consequential damages arising from use of this manual or the related products.
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Page 3: Table Of Contents
Learning a Cable Locating a Pin Assembling a Cable System Self-Test Configure/Install System Appendix A - Wiring Diagrams Appendix B - Sample Reports Appendix C - In Case of Problems Appendix D - Error Messages CheckSum Model G-50 Manual - Page 1... - Page 4 Figure A5 - Batch Test Report Ap 6 Table A1 - SR-500 Base Address Jumpers Ap 8 Table A2 - Computer I/O Port Assignments Ap 9 Table A3 - File Error Messages Ap 11 CheckSum Model G-50 Manual - Page 2...
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Page 5: Limited Warranty
CheckSum LLC reserves the right to replace the product in lieu of repair. If the failure has been caused, as determined by CheckSum, to be due to misuse, neglect, accident, or abnormal conditions of operation, repairs will be invoiced at a nominal cost. - Page 6 CheckSum Model G-50 Manual - Page 4...
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Page 7: Introduction
Introduction System Overview The CheckSum Model G-50 Cable/Continuity Test System allows an IBM PC (or com- patible) to efficiently test assemblies (such as cables and harnesses) containing up to 96 test points for shorts and opens. The System performs a continuity test from each point to every other point in the assembly. - Page 8 • System self tests • System configuration • The CheckSoft Software Package also allows for assigning operator instructions and long pin and wire names that can be displayed to help repair faulty cables. CheckSum Model G-50 Manual - Page 6...
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Page 9: Figure 1 - System Block Diagram
Figure 1 - System Block Diagram CheckSum Model G-50 Manual - Page 7... - Page 10 CheckSum Model G-50 Manual - Page 8...
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Page 11: Specifications
Mating connectors: Includes ribbon cables that are terminated by 50-pin (25 X 2) • female connectors on .10" centers. Each cable is approximately 40" long. Warranty: One-year limited parts and labor warranty • CheckSum Model G-50 Manual - Page 9... - Page 12 Self-test of each I/O pin and control circuitry • Wire identification via probe • Propagation delay compensation • Assign special operator instructions • Assign pin names • Assign wire names • Print test results • Print wiring data • CheckSum Model G-50 Manual - Page 10...
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Page 13: Installation Instructions
Step 2. Remove the cover from your PC. Typically, the cover is secured with five screws on the back, one in each corner and one in the center top. Step 3. CheckSum Model G-50 Manual - Page 11... -
Page 14: Figure 2 - Sr-500 Jumpering
VCC power from the PC to the SR-500 ribbon cables. Since this is unfused power it is highly recommended that these jumpers are not installed to prevent damage to the PC, SR-500, and/or external equipment. Figure 2 - SR-500 Jumpering CheckSum Model G-50 Manual - Page 12... - Page 15 Reposition the SR-500 over the motherboard connector and fully seat it. Install the screw removed in step 1 through the top of the back panel bracket into the PC chassis to hold the SR-500 in place. CheckSum Model G-50 Manual - Page 13...
- Page 16 Repeat steps 1 through 5 for each SR-500 that you are installing. Step 6. Reinstall the cover of the PC. Step 7. Reinstall power to the PC and boot it up. CheckSum Model G-50 Manual - Page 14...
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Page 17: Figure 3 - Sr-500 Installation
Figure 3 - SR-500 Installation CheckSum Model G-50 Manual - Page 15... - Page 18 CheckSum Model G-50 Manual - Page 16...
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Page 19: Checksoft Software Installation
Insert the CheckSoft Software diskette into your A: drive. Step 3. The installation procedure creates a directory on your hard drive (C:) called \CHECK- SUM. A file called CABLE.BAT is copied onto the root directory to start the System CheckSum Model G-50 Manual - Page 17... - Page 20 Start the CheckSoft Software by typing: CABLE[Enter] In this configuration, the operating software is stored in the \ CHECKSUM directory. Cable testing can be initiated by typing CABLE from either the root or \CHECKSUM directories. Floppy Disk Drive Installation If you do not have a hard disk drive in your System, use this procedure.
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Page 21: Figure 4 - System Menu
Completing the Software Installation You will see the introductory directory, the System menu: Figure 4 - System Menu Select [F6] - Configure/Install System. You will then see the configuration menu shown in Figure 5. CheckSum Model G-50 Manual - Page 19... -
Page 22: Figure 5 - Configure/Install System Menu
If you need further instructions in the use of the self-test, refer to the System Self-Test section of the manual. If errors are reported, refer to Appendix C. Otherwise, continue on to Fixture Installation. CheckSum Model G-50 Manual - Page 20... -
Page 23: Fixture Installation
Figure 6 - SR-500 Test Point Pin Out Note that the top two pins of each connector are dedicated to VCC and Ground. These signals are available only if the jumpers on the PCB are installed. CheckSum Model G-50 Manual - Page 21... - Page 24 Operating Instructions portion of this manual to learn how. When you have become familiar with operation of the System, refer to the section Learning an Assembly for allow- ing the System to learn the connections for the specific cables that you have interfaced. CheckSum Model G-50 Manual - Page 22...
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Page 25: Operating Instructions
Type in the sequence: A:[Enter] CABLE[Enter] If you have a hard disk drive in your computer and are presently in the CheckSum or root directory (\CHECKSUM or \), simply type: CABLE[Enter] You will then see the System menu as shown in figure 7. -
Page 26: Figure 7 - System Menu
[F3] is used if you would like to identify a lead on a cable or harness. It allows you to probe a point. It then tells you which point you have probed. CheckSum Model G-50 Manual - Page 24... - Page 27 In addition, this option can be used to configure the reports generated by the System. [ESC] allows you to terminate CheckSoft Software execution. Once this option is selected, you return to the DOS environment. CheckSum Model G-50 Manual - Page 25...
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Page 28: Testing A Cable
If a cable has been learned, but not saved on disk, it is valid to continue with the test even though no file name is present (i.e., "(None)" ). If a cable has not been learned, or data CheckSum Model G-50 Manual - Page 26... -
Page 29: Figure 9 - File Selection List
When you press [Enter], the file name that has square brackets around it is loaded into memory. If you do not wish to load a file into memory, press [ESC] to exit. CheckSum Model G-50 Manual - Page 27... -
Page 30: Figure 10 - Test Failure Display
7, and the connection is not present, it is reported as an OPEN from pin 4 to pin 7. It does not also appear as an open from pin 7 to pin 4. CheckSum Model G-50 Manual - Page 28... -
Page 31: Figure 11 - Test Completed Menu
Pressing anything else continues the test. Concluding the Test Once the test is completed (either with or without errors), you are presented with the Test Completed menu shown in Figure 11. Figure 11 - Test Completed Menu CheckSum Model G-50 Manual - Page 29... - Page 32 Cable ID (the optional cable name assigned when the cable is learned). Depending on the configuration of your System (determined by the Report Con- figuration menu), the System may solicit the Batch ID after you have requested a batch CheckSum Model G-50 Manual - Page 30...
- Page 33 Report Configuration menu. [ESC] Escape allows you to return to the main System menu to select a new cable or begin a new batch. CheckSum Model G-50 Manual - Page 31...
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Page 34: Learning A Cable
The System also provides a number of additional features to help you obtain better operator instructions and more readable test results. These features are all available from the Assembly Learn menu shown in Figure 12. CheckSum Model G-50 Manual - Page 32... -
Page 35: Figure 12 - Assembly Learn Menu
System will be much more useful to you. There can be a pin name and wire name for each port of the Test System. Each name can be up to 16 characters in length. CheckSum Model G-50 Manual - Page 33... -
Page 36: Figure 13 - Pin And Wire Name Entry Screen
< < mark at the bottom of the display. If probing is enabled, each time the System detects a probed point, it moves the entry area to that port. Using this method you can probe each point and then type in its name. CheckSum Model G-50 Manual - Page 34... - Page 37 The comments screen can include line graphics such as - or = along with corresponding corners and vertical single and double lines. Comments are entered in the Operator Comments Entry screen shown in Figure 14. CheckSum Model G-50 Manual - Page 35...
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Page 38: Figure 14 - Operator Comments Entry Screen
[F2] key allows you to save the present screen to the disk for future recovery (for ex- ample, if you would like to read it into another spec file) rather than recreating it. The drawing is saved as the name you specify with an extension of .CMT. CheckSum Model G-50 Manual - Page 36... - Page 39 For each uSec that you request, the System is commanded to perform an "I/O Read" instruction. For most machines, this instruction sequence requires one to two uSec. It should not be necessary to use a delay of more than one or two uSec. CheckSum Model G-50 Manual - Page 37...
- Page 40 FROM is used to tell the origin of each pin. It is followed by one or more TOs. It is not necessary to have a FROM for every connected pin. The program fills out the table for the other direction of each TO. CheckSum Model G-50 Manual - Page 38...
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Page 41: Figure 15 - Sample Text File
Pin 2 are connected together through Pin 32 even though though the connection is not ex- plicitly stated. The example also includes some operator instructions describing how the fixture should be set up and the cable connected. CheckSum Model G-50 Manual - Page 39... - Page 42 The file contains a list of the connections, the cable name, operator comments, pin and wire names, and the number of SR-500 I/O Modules configured into your System. CheckSum Model G-50 Manual - Page 40...
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Page 43: Locating A Pin
The GS-850 probe jack is grounded for you by the ground cable to the computer. When you move the probe to another pin in the cable, the new pin identity is displayed. CheckSum Model G-50 Manual - Page 41... -
Page 44: Assembling A Cable
Model GS-850 Fixture or your own probe. The probe needs to be electrically connected to the PC chassis to be effective since the System is searching for a grounded input. CheckSum Model G-50 Manual - Page 42... -
Page 45: System Self-Test
Figure 18. Figure 18 - Self-Test Result Display If there are any failures, prior to the Self-Test Result display you will receive the Self-Test Failure display as shown in Figure 19. CheckSum Model G-50 Manual - Page 43... -
Page 46: Figure 19 - Self-Test Failure Display
If you see massive self-test failures, it is likely to be an installation or compatibility prob- lem. If you see one (or a few) repeatable failures, you can suspect an SR-500 hardware failure. In this case return the SR-500 to CheckSum for analysis. CheckSum Model G-50 Manual - Page 44... -
Page 47: Configure/Install System
If you have a large number of SR-500s in your system but are only using some of the lower numbered ones, temporarily setting the number of I/O modules to reflect the num- ber of the highest card that you are actually using will cause the tests to execute faster. CheckSum Model G-50 Manual - Page 45... - Page 48 CheckSoft Software. If you use this feature, make sure that you include a "\ " or ":" at the end. Examples of proper data paths are "\ CHECKSUM\ DATA\ ", "B:", and "A:\ DATA\ ". If you do not want to use a path (the spec data files reside in the same directory as the CheckSum software), press [F5], then [Enter].
- Page 49 [F8] is used to specify that you have connected a foot switch to the System. A foot switch is available from CheckSum that connects to an unused printer port on your PC. When the foot switch is activated, it performs the same function as the [F1] key on the keyboard.
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Page 50: Figure 21 - Report Configuration Menu
In addition, if this feature is enabled and a batch report is not requested at the end of testing a batch, the System verifies that this is the operator’s intent, since the data about the batch could be accidently lost. CheckSum Model G-50 Manual - Page 48... - Page 51 [F8], then type in ‘Operator Initials:__________’. The outcome of this entry is shown in the example batch report in the Appendix of this manual. [F9] returns to the Configure / Install System menu. CheckSum Model G-50 Manual - Page 49...
- Page 52 CheckSum Model G-50 Manual - Page 50...
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Page 53: Appendix A - Wiring Diagrams
Appendix A Wiring Diagrams CheckSum Model G-50 - Appendix Page 1... - Page 54 Port 53 Port 4 Port 3 Port 52 Port 51 Port 2 Port 1 Port 50 Port 49 Right Angle Header Viewed as facing component side of PCB Figure A1 - Model SR-500 Pin-Out CheckSum Model G-50 - Appendix Page 2...
- Page 55 Report showing unexpected opens from port 1 to port 3 and port 2 to port 3. It also shows a short from port 3 to port 4. Figure A2 - Cable Test Report With Failures CheckSum Model G-50 - Appendix Page 3...
- Page 56 11:28 Cable Tester: CheckSum Model G-50 ======================================== Port Pin Name Wire Name Port Pin Name Wire Name Test Passed, no failures... End of data Figure A3 - Cable Test Report With No Failures CheckSum Model G-50 - Appendix Page 4...
- Page 57 Pin 2 < = > 3 Pin 32 Pin 32 < = > 1 Pin 1 Pin 32 < = > 2 Pin 2 End of data Figure A4 - Cable Wiring Report CheckSum Model G-50 - Appendix Page 5...
- Page 58 Cable ID: Cable PN 123-434 Batch ID: Order No. 43-54W Operator Initials: _________________ Number Tested: Failures: Yield Test Date: 9/10/90 Time: 11:28 Cable Tester: CheckSum Model G-50 ======================================== Figure A5 - Batch Test Report CheckSum Model G-50 - Appendix Page 6...
- Page 59 Note Some Leading Edge brand computers use Base Address 768 for their own internal pur- poses. Rejumpering the CheckSum I/O Module to Base Address 512 will allow the Model R-50 to work in these computers. To determine if there are address conflicts, you may wish to remove suspected cards from your computer and try the SR-500 Modules again.
- Page 60 When you change the SR-500 base address, you must also go to the CheckSoft Setup/Con- figuration menu and change the corresponding base address to match the jumpered base address of the I/O Modules. CheckSum Model G-50 - Appendix Page 8...
- Page 61 Fixed Disk 320-32F 1F0-1F8 Parallel Printer (Primary) 378-37F 378-37F SDLC 380-38F 380-38F Bisynchronous Com. 3A0-3AF Mono Adapter/Printer 3B0-3BF 3B0-3BF CGA Adapter 3D0-3DF 3D0-3DF Diskette Controller 3F0-3F7 3F0-3F7 Table A2 - Computer I/O Port Assignment CheckSum Model G-50 - Appendix Page 9...
- Page 62 CheckSum Model G-50 - Appendix Page 10...
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Page 63: Error Messages
Disk out of space Error 103 File Open error Error 150 Disk is write-protected Error 152 Drive is not ready Error 156 Disk seek error Error 162 Hardware failure Table A3 - File Error Messages CheckSum Model G-50 - Appendix Page 11... - Page 64 CheckSum Model G-50 - Appendix Page 12...
- Page 65 Configuration Data - Information saved on disk that tailors the System’s setup to a par- ticular application so that the System does not need to be configured each time it is used. The configuration data is specified and saved with selections in the Configure/Install Sys- tem menu. CheckSum Model G-50 - Appendix Page 13...
- Page 66 8086/8088/80286/80386 series of computers. Model CBX Adapter - An optional adapter that converts the 50-pin ribbon cable connec- tors on the end of the cables coming from a CheckSum I/O Module to discrete wire screw- down terminals. Model G-50 Continuity Test System - A Test System consisting of one or more Model SR-500 Continuity I/O Modules, CheckSoft Software, and cabling to the UUT.
- Page 67 Wire Name - An optional string of characters assigned by the user that describe the UUT. Examples might be ‘Red Wire’ or ‘VCC Bus’. Each wire name can contain up to 16 char- acters. There can be a unique wire name for each tester port. CheckSum Model G-50 - Appendix Page 15...
- Page 68 CheckSum Model G-50 - Appendix Page 16...
- Page 69 CheckSum Model G-50 - Appendix Page 17...
- Page 70 CheckSum Model G-50 - Appendix Page 18...