DayTronic System 10 User Manual Book Download

Page: 148 / 414

RANSDUCER

ABLING

1.E

AND

ONDITIONER

ARD

ETUP

appropriate connector, being sure to secure each cable within its conditioner
connector by means of one of the connector’s two internal clamp bars.*

Mount each CONDITIONER CONNECTOR to the rear of the System 10 main-
frame by means of the two captive screws attached to the connector housing.

THIS IS REQUIRED FOR PROPER ESTABLISHMENT OF THE CABLE
“SHIELD” CONNECTION

(see “Connection of Cable Shield,” below).

Refer to the respective subsection of Section 1.E.2 for every type of condition-
er card in your system, to see whether there are any special “Setup and/or
Operating Considerations” you should be aware of with respect to that card.

If special procedures are required for any conditioner card(s) in your system,
you should now perform those procedures, carefully following the instructions
given in the respective subsection of Section 1.E.2.

In Section 1.E.2 you will also find all necessary instructions for the connection
and operation of any conditioner-related “Options and Accessories” that may
be included in your system.

If no special conditioner setup procedures are called for, you may proceed
with the system setup procedures explained in Sections 1.F through 1.H of
this Guidebook.

c. C

ONNECTION OF

ABLE

HIELD

IMPORTANT:

Cable signal wires or twisted wire pairs should always be properly

shielded, as indicated in the respective cabling diagram in Section 1.E.2. This will
minimize the production of unwanted electrical noise from capacitive and induc-
tive effects.

In almost all of the cabling diagrams given in Section 1.E.2, only the “connector
end” of each cable shield is shown, as represented by a gray circle surrounding
either a single wire or a TWISTED PAIR of wires within the cable. The “transducer
end” of each shield is not normally shown. Unless otherwise stated, every shield
should be grounded only at the connector end. That is, every cable shield should
make electrical contact only with the

GROUND LUG

OF A STANDARD “10A”

CONDITIONER CONNECTOR or with a

“SHIELD” TERMINAL

OF AN “AA” CONDI-

TIONER CONNECTOR. The drain wire tying the connector end of the shield to the
connector’s ground lug or “SHIELD” terminal should be as short as possible (as
shown in Fig. 1.7), and the conditioner connector MUST be mounted securely to
the rear of the System 10 mainframe.

If you're using the standard 20-pin “10A”-card connector shown in Fig. 1.5, open
the connector housing and locate the L-shaped ground lug under the head of one
of the two captive mounting screws. The shield wire of each attached cable
should be soldered to the exposed terminal of this lug. When reassembling the
connector, be sure that the shield lug is positioned between the head of the
screw and the connector’s plastic base. A SLIDING LUG MAY RESULT IN NOISY,
INACCURATE READINGS.

1-26

1.E.1 G

ENERAL

ONSIDERATIONS

* You may, if you wish, use your own connector for a "10A" card, in place of the standard

Daytronic 20-pin connector shown in Fig. 1.5. It should be a 10-position, 20-contact edge-card
connector with contact pitch of 0.156 inch (for 1/16-inch printed circuit cards).

DayTronic System 10, User Manual Book

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