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KB48353
High density digital breakout board jumpers are reversed
Revision:  2.0
Published:  4/27/2006
Applies To
SNAP-IDC-HDB
SNAP-ODC-HDB
Versions

SYMPTOMS

When the SNAP-IDC-HDB breakout rack is used with the SNAP-HD-BF6 cable to connect to the SNAP-IDC-32 module, all input channel LEDs are turned on, even though field signals are not present.

When the SNAP-ODC-HDB breakout rack is used with the same cable and a SNAP-ODC-32-SRC or SNAP-ODC-32-SNK module, the corresponding output point LEDs do not turn on when a point is turned on.

WORKAROUND

If you are having the above symptoms, jumper the board according to the following:

SNAP-IDC-HDB: Install the JPA, JPB, JPC, and JPD jumpers as shown:

SNAP-ODC-HDB: Install the jumpers as shown below:

CAUSE

Several of the breakout rack MC+ and FC+ jumper labels are incorrectly silkscreened (white printing on the circuit board).

MORE INFORMATION

For clarity, future revisions of these boards will be silkscreened with X and Z, instead of MC+ and FC+. Refer to product documentation for the correct jumper positions.

Relevant Downloads
No relevant downloads have been specified.
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Email: support@opto22.com

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