Ciprico Rimfire 3880 User Manual download pdf (Page 53)

User’s Guide 21020285 D

Chapter 3 Hardware Installation

Step 3: Board Insertion Page 3 - 11

Step 3: Board

Insertion

Although the VMEbus Specification has very precise mechanical and electrical

requirements for the subrack, it still leaves room for variance in the design of

the system enclosure. You will need to examine the enclosure that you will be

working with to determine how to get access to the subrack.

General Steps

In most cases you will need to follow these steps to insert the board:

1. Remove power from the system.

2. Remove as much of the enclosure shell as is necessary to adequately

access the VMEbus subrack.

3. Choose a free double-height slot for the RF3880.

4. Remove bus grant arbitration and interrupt acknowledge jumpers from

backplane. You will need to remove the four Bus Grant jumpers, and

the Interrupt Acknowledge daisy-chain jumper from the slot chosen for

the RF3880. These jumpers must be installed only for empty slots.

5. Align the RF3880 with the board guides on the subrack for the slot you

have chosen. Be sure the orientation is correct. (If J1 on the subrack

backplane is up, the component side of the board should face right.)

6. Slide the board forward and firmly press into the J1 and J2 connectors

on the backplane. You should feel it give slightly as you press inward.

7. If your system subrack accommodates them, fasten the small screws on

the RF3880 into the subrack. You will need a small flat bladed

screwdriver.

The illustration on the next page demonstrates insertion of the RF3880 into a

VMEbus subrack. Do not reinstall the enclosure panels yet. You will need to

observe the faceplate LEDs in the next step.

Figure 12 Inserting the RF3880

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Ciprico Rimfire 3880 User Manual Page 53