User`s manual

CHAPTER SEVEN

Connecting Peripherals

Your application may specify the cable configuration required for

connecting modems to a computer. If so, you should follow their recom-

mendations. If cable configuration is not specified, you can use the cable

type described in the appendix pertaining to your version of SYNC/570 or

SYNC/57Oi.

If you supply your own cables for

SYNC/570

SYNC/57Oi,

Digi

recommends shielded cables (15

or less capacitance per foot) for all

installations. The FCC requires the use of shielded cables to comply with

EMI/RFI

emission limits. In addition, cables that run long distances or

through electrically noisy areas are subjjct to voltage surges that can cause

data errors or equipment damage.

EIA-232-D specifies a maximum cable length of 50 feet. If you run cables

farther than 50 feet, you increase the risk of surge damage and data loss.

(However, using shielded cable of

lo-15

capacitance per foot somewhat

lessens the risk of data errors.>

zE4

NOTE

W%en

muting

your

cables, do not

run

them

parallel to AC

wiring

or on top

ofjluomcen#

igbt ballasts.

BunaYfng

several EIA-232-D cables

together

acceptable.

Refer to the appendix pertaining to your version of SYNC/570 or

SYNC/57Oi

for cable and connector information.