Installing The Intermodule Chassis Shields; Parts List; Procedure - HP E840 A Series User And Service Manual

Installing the Intermodule Chassis Shields

WARNING

Parts List

Procedure

38 Rack Mounting and Option Installation
This procedure describes how to install kit p/n E8400-80919 - Intermodule
Chassis Shields in the HP E840xA mainframe. The chassis shield is HP's
implementation of VXI revision 1.4, specification B.7.3.4 that allows
grounded shielding between mainframe slots. The shield is used to isolate
VXI modules that generate electromagnetic interference (EMI) at excessive
levels, or to protect VXI measurement modules from noise sources.
Do not install intermodule chassis shields while the mainframe
is turned on or plugged into an AC power source.
The parts included in the E8400-80919 kit are shown in Table 2-5.
Quantity
1
8*
* Includes 4 extra springs.
Note
Each mainframe slot has top and bottom chassis shield guides (Figure
2-13). Chassis shields should be installed on both sides of an instrument
generating interference/noise, or installed on both sides of a sensitive
instrument.
1. Insert grounding springs into the four sockets (two top, two bottom)
along the shield guides (Figure 2-13). Use a small flat blade
screwdriver to secure each spring under the socket tab.
Use the chassis shield to cover the vent holes inside the mainframe
when installing grounding springs in the top guide sockets. This
prevents the springs from falling into the mainframe if they are
accidently dropped.
2. Align the chassis shield with the shield guides and gently slide the
shield into the mainframe. Be careful not to crimp the front grounding
springs with the edge of the shield. Slide the shield in until it reaches
the end of the shield guide.
Table 2-5. E8400-80919 Parts List.
Description
Chassis Shield
Grounding Spring
Part Number
E8400-00600
E8400-09101
Chapter 2