FDDI/9000 HPPB Adapter Release Notes for HP-UX

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and must be furnished by the customer. For existing installations that use cables with MIC
(Media Interface Connector) connectors, SC to MIC cable adapter cables must be ordered by
specifying “Option 001”.
WARNING Never look directly into an optical fiber port. While not used or
supported by this adapter, some fiber optic equipment can emit laser
light that can injure your eyes. Always assume the cable is connected
to a light source.
Optical Bypass Relay Connection
The Optical Bypass Relay (OBR) connector allows the OBR device to maintain integrity of the
dual FDDI rings if the adapter fails or if system power is removed. The OBR connector is an
RJ-12 modular jack connector. The pin assignments (counting from right to left, with pin 1 in
the rightmost position) are described in the list below.
WARNING Do not insert telecommunications cabling into the optical bypass relay
connector.
OBR RJ-12 Connector Pin Assignments
Pin 1, 2: Relay drive +5.0 V dc
Pin 3, 4: Bypass enable
Pin 5: Bypass present
Pin 6: Return grounded internally
Operating Environment
The list below shows the recommended operating environment for the HSC-FDDI Dual
Attach Adapter.
Operating Environment
Operating Temperature Range: 5 to 30 degrees C
Non-operating Temperature Range: -40 to 70 degrees C
Recommended Operating Temperature Range: 20 to 30 degrees C