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Section Four:
Installation
Installation
The RPT-485W/RPT-485WF board can be mounted in a listed CHS-4, CHS-4L, or an ABS-8R (remote).
When mounting on a CHS-4L, use the inner position. When the RPT-485WF is mounted on the CHS-4 and
CHS-4L, adequate clearance above the board is required. Outer position mounting on the CHS-4 is also
possible but the board has to be mounted with components facing inward. For the RPT-485WF, using the
ABS-8R, use the upper center knockout for the fiber optic cable's entry/exit.
CAB-3 Mounting
CHS-4
Inner Position (RPT-485W ONLY): Screw (2) 6-32 standoffs
onto PEM studs in chassis. Screw (2) 4-40 screws into top
holes of board and attach (2) 4-40 standoffs. Place tab on
bottom of board into slot. Screw boards into 6-32 standoffs
with (2) 6-32 screws (refer to Figure A). The top standoffs
should just rest on the back of the chassis.
CHS-4
Outer Position: The board's components must be facing inward! Slip the tab of the board into the top slot
on CHS-4 with the components facing the back of the chassis. Rest the top of the board on the mounting tabs
at the top of the CHS-4. Screw the board on using (2) 4-40 screws.
CHS-4L
Inner position only: Screw (2) 4-40 standoffs onto the top row of
PEM studs on the CHS-4L. Slide tab of board into inner slot
of CHS-4L and rest on standoffs. Use (2) 4-40 screws to fix
the board onto the chassis (refer to Figure B).
CHS-4L
9
Document 15640 Rev B1 08/13/97 P/N 15640:B1
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