Specifications

2. Align the EPC-2 to two adjacent top and bottom card guides in the VXI
chassis.
3. Slide the EPC-2 module into the chassis. Use firm pressure on the handles
to mate the module with the backplane connectors.
4. Tighten the screws in the top and bottom of the front panel to ensure
proper connector mating and prevent loosening of the module via vibration.
Note that the EPC-2 has a .i.front-panel key; adhering to the VXIbus
specification that prevents its insertion next to certain other types of
modules. These keys prevent problems associated with incompatible signal levels
on the VXI daisy-chained .i.local bus;. Although the EPC-2 does not use the
local bus, its ability to be a slot-0 controller means that it uses what would
otherwise be "leftside" local bus lines for TTL .i.MODID; lines. Therefore the
key prevents the EPC-2 from being installed to the immediate right of a module
keyed for a "rightside" ECL, analog, or sensor local bus.
EXM Module Insertion (EPC-2x only)
The EPC-2x typically has one EXM installed in the front-panel slot (e.g., the
.i.EPC-2e; contains an .i.EXM-1; or .i.EXM-10; Ethernet controller). If the EXM
needs to be removed or replaced, loosen the two thumbscrews on the EXM and
gently pull it out of its rear connector. To insert an EXM, slide the EXM into
place in the card guides, push firmly on the EXM front panel to insert its rear
connector, and tighten the thumb screws on the EXM's face plate.
Not all EXM types are compatible with the EPC-2x. You should not attempt to use
a different type of EXM than that originally provided with your EPC-2x without
first consulting with the supplier of your EPC-2x.
* make sure that power to your vxi system is off. exms are not designed to
be inserted or removed from live systems.
* when inserting an exm, avoid touching the circuit board, and make sure the
environment is static-free.
VXI Backplane Jumpers
.i.backplane jumpers;.i.daisy chain;.i.VME jumpers;.i.interrupt acknowledge;The
VXIbus contains several daisy-chained control signals. Almost all VXIbus back-
planes contain .i.jumpers; or DIP switches for these control signals to allow
systems to operate with empty slots. Failing to install these jumpers properly
is a common source of problems in building a new VXIbus system.
There are five jumpers per VXI slot, one for each of the four bus-grant
arbitration levels and one for the interrupt-acknowledge daisy chain. Depending
on the backplane manufacturer, the jumpers or DIP switches may be on the rear
pins of the J1 connector, or may be alongside it on the front or rear side of
the backplane. Based on what is in the VXI slot, install or remove the
backplane jumpers as follows:
VXI slot content IACK and bus-grant backplane jumpers
Empty slot Install
EPC-2 left slot Remove
EPC-2 right slot Install
Other VXI modules Remove
VME module Consult manufacturer's literature
Connecting Peripherals to the EPC-2
The final step of installation is connecting peripherals, typically a video
display and keyboard, but also perhaps a mouse, modem, printer, etc. Unless
otherwise noted, all connectors are compatible with those found on IBM-
compatible desktop PCs. Detailed pin assignments are described in Chapter 6.
Monitor
.i.VGA connector;A .i.monitor; is connected via the 15-pin D connector on the
EPC-2 front panel. The graphics controller in the EPC-2 is .i.VGA; with analog
color signals, meaning that old-style .i.EGA;, .i.CGA;, and monochrome monitors
cannot be used. VGA monitors may be color or .i.gray-scale;; a parameter in the
BIOS setup screen allows you to specify which type is being used. If using a
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