AOpen AOI-702U Especificaciones descargar pdf (Pagina 119)

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Central Library (Cons) the foremost dilemma of a Central Device Library is the ability to “contaminate”

EVERY board setup by fault (file corruption) or mistake.

Best Practice: The user MUST have a consistent Device Numbering System (standardized common

part numbers) to benefit from using the Central Library.

NOTE: Contract Manufacturers (CMs) are not typical a good candidate for Central Device Libraries; each of

their customer’s boards use a different (unique) device numbering system. As a result, the benefit of using a

central library would be marginal in this case. Also, by using central library the user needs to have a consistent

protocol for dealing with Device rotation. For example, for Device number 101 on board XYZ rotation 90 mean

pointing to the left, then Device 101 on all boards’ rotation 90 must point to the left.

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Training a PCB from an Inherited Library dramatically speeds up the training process for revisions of a board

previously trained (99% automatic). This is because a library has already been created and will auto-program

all common parts in the current (revised) board; with the exception of any new components or part vendor

changes which must be added to the library.

Process Summary

1. Prepare CXF file associated with the revised board. See CXF File Development.

2. Load “stage” the PCB at the same Z-height (20mm?) as a board whose library you wish to inherit. See

PCB Handling (ESD Notes)

The standoff blocks and table grid mat are made from ESD compliant materials; specifically Delrin

(polyoxymethylene plastic) which is rated ESD electrostatic dissipative safe. In addition, the FA cabinet, frame

and drawer assemblies are grounded via the power cable ground wires.

Best Practice: Board handling (outside of the machine) during load and unload operations, should

always be performed using proper ESD precautions and handling procedures (i.e., ESD wrist straps and

sole grounders). See ESD Association (ESDA) for guidance: http://www.esda.org/aboutesd.html.

3. Staging a PCB.

4. Launch the AOI Mode software using the Production Launcher and select the proper standoff post

height used for the similar board(s) in this series. See Production Launcher.

a. Click the <Correct, 20mm?> calibration button in the Production Launcher to set the system

calibration for this height

b. The AOI Mode software will load.

5. Choose the <File | Go to Supervisor Mode> menu option. See Supervisor Mode.

6. Select <File | New Board> and press the <Scanner Setup> Button to launch the scanner and capture

an image of the board. See Scanning a PCB (Epson™ Scan).

a. Enter a descriptive board name for the new setup (e.g., boardname-revx-top)

b. Check the <Inherit Library> option in the <New Board Setup Name> dialog box and press the

<OK> button.

7. Next (same as standard new board setups) you will be directed to define the board “Size” and

“Alignment Points.” See Defining Board Size.

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AOpen AOI-702U Especificaciones Pagina 119