RTS CIF-612 Especificaciones descargar pdf (Pagina 39)

SECTION

APPENDIX

Detailed Information

B.l

General Information and Definitions

Normally the SAP1626 serves the dual purpose of sig-

nal and

power distribution. In general, the

SAP1626 connects between the system channels or

buses and

User Stations or strings of

User

Stations (normally to the

User Stations through

the BOP220). The system channels or buses are usu-

ally established by

Power Supplies. Often these

buses are also connected to an

800

series balanced

intercom system through a System Interconnect (e.g.

Models 862,860).

A "wet" channel contains 32 volts

and two-way

intercom audio.

"dry"

channel contains two-way intercom audio

only.

User Station must be connected so that its

channel

is connected to a "wet" channel; its channel

2 may be connected to either

"wet" or "dry" channel.

(Exception:

Local

powered

User Stations

can

arbitrarily connected to wet or

dry

channels).

The top row of switches on a SAP1626 connect to the

channel one inputs of

User Stations and should

always be dialed to a "wet" channel. (Exception: If

all

stations are local powered, dial up

can

be arbitrary).

The bottom row of switches

can

be arbitrarily dialed

to any channel. Dialing to channel zero connects the

User Station/Stations' channel two connection to

ground (dead channel).

The SAP1626 Power Supply Inputs

can

connected

to one, two, three, or four three channel power sup-

plies to get three, six, nine, or twelve "wet" channels,

respectively.

On the SAP1626, Channels 13,

14,

and 15 are always

dry, and, in general, the top row of switches should

not be left on these channels, because an unpowered

User Station

could

absorb some of the Intercom

or Program Audio that may appear on these channels.

Because the SAP1626 has no current limiters, the

PS50 and PS60 power supplies may shorten the life of

the thumbwheel switches. Current limiters may be

added to the PS50 and PS60 power supplies to

lengthen switch life.

Figure B-1 shows the connection of the triple current

limiter in the SAP1626.

The triple current limiter schematic diagram, SD1598,

is on page 7-17,

the next section.

The triple current limiter assembly diagram, AS1601,

is on page 7-19,

the next section.

Page B-1

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