20
HIGH SPEED COS-4 AND HIGH SPEED COS-8
4.1 Placement
Place the High Speed COS-4 or High-Speed COS-8 in a cool, dry place
close to an electrical outlet. It should be within 50 ft. (15.2 m) of the devices
you want to connect to it.
NOTE
The High Speed COS-4 and COS-8 can be mounted in a standard 19"
equipment rack with a rackmount adapter kit. The kit is not included with
the unit; call your supplier for a special quote.
4.2 Cabling
This section describes the cables and procedures you’ll use to connect
equipment to the High Speed COS-4 or COS-8. Refer to Figure 4-1 on
page 24 for an illustration of a typical application.
4.2.1 C
OMPUTER
(
S
)
↔
COS
For each computer you want to connect to the High Speed COS-4 or
COS-8, you’ll need a cable containing at least 5 wires with a DB25 male
connector on the COS end. If a computer is an IBM
®
AT
®
or PS/2
®
or
compatible, the cable should have a DB9 female connector on the computer
end. If a computer is an IBM PC/XT™ or compatible, the cable should have
a DB25 female connector on the computer end. Assuming you’ve set the
COS port(s) as DCE (see
Section 3.4
), the cable(s) should be wired as shown
in Tables 4-1 and 4-2 on the next page. (Our product codes for cables
pinned this way are EVMBMC for the DB9 type and ECM12C for the
DB25 type.)
Connect the female end of each of these cables to the serial port (COM1,
COM2, etc.) on the selected computer. If the selected computer is the
“source” or “master” (the one that’s doing the switching), connect the male
end of the cable to the COS’s common port (Port 0). If the computer is a
“destination” or “slave” (one that’s being switched between), connect the
male end of the cable to the chosen numbered port on the COS.
4. Installation
Summary of Contents for High Speed COS-4
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