RTS 848A, DC848 Technical Manual

TM5545

/

O/N 9380-5545-80

Rev

E

Matrix

Data Connector

Intercom

O/N 9000-5545-00

Station

81N 9000-5556-08

RTS

A

TELEX COMMUNICATIONS PRODUCT

SYSTEMS

PROPRIETARY NOTICE

UNPACKING AND INSPECTION

The information and design disclosed herein were originated by and are the property of RTS Systems. RTS S ystemsreserves all patent, proprietary design, manufactur-

and

ing, reproduction, use article disclosed therein, except to the extent rights expressly granted

COPYRIGHT NOTICE

PATENT NOTICE

This product contains and uses a design embodied States Patent No. 4,358,644: "BILATERAL CURRENT SOURCE FOR A MULTI-TERMINAL INTERCOM". This design employs a bilateral current source operated as a two-wire to four-wire converter.

Technical Manual, Model 848A Matrix Intercom System Model DC848 Data Connector

This manual is published by the Engineering Department of RTS Systems, which is responsible for its contents.

Address communications regarding this manual to:

Sales Engineer RTS Systems The Center at Burbank Airport 2550 Hollywood Way, Suite 207 Burbank, CA 91505 USA

Unpacking Information ii Warranty iii Return Shipping Instructions Description and Specifications Installation Operating Instructions Theory of Operation .4- 1 Maintenance, Test Procedures

&

Troubleshooting 5-1

to

TM5545

QUICK

tice

..............

sales rights thereto, and to any

others.

in

United

TABLE

.............

OF

CONTENTS

...........

ii ii

.........

.......

......

.........

iii

1-1

2-1

3-1

.........

..........

are

Immediately upon receipt of the equipment, inspect the shipping container and the contents carefully for any dis- crepancies or damage. Should there be any, notify the

and

freight company The Model 848A Matrix Intercom Station shipping con-

tainer should contain the following components: Ordering Number 9000-5545-00

RTS Systems

atlr

1

17 2006-0014-00 Terminal Connectors,

1

The Model DC848 Data Connector shipping container should contain the following components:

Ordering Number 9000-5556-00

Qty

1 1

1

"Warning:

radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause inter- ference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment cause interference in which case the user, at his own ex- pense, will be required to take whatever measures may be required to correct the interference."

-

9010-5545-00 Model 848A 9300-5545-00 Technical Manual 9020-4979-00 Power Supply Assembly

2006-0075-00 15-pin connector

RTS Systems

Part

Number Desctipti~ 9000-5556-00 Model DC848 9300-5545-00 Technical ~anuh 9020-4979-00 Power Supply Assembly

This equipment generates, uses,

the dealer at once.

pin crimp

locking ramp

NOTICE

J

of Part

15

ofFCC Rules, which

in a residential area is likely to

with

.

'4

?\%

and

can radiate

-Page

ii-

RTS SYSTEMS' LIMITED WARRANTY

RETURN SHIPPING INSTRUCTIONS

The products of RTS Systems are warranted to defects in materials and workmanship for a period of three years from the date of sale.

RTS Systems sole obligation during the warranty period is to provide, without charge, parts and labor necessary remedy covered defects appearing prepaid to RTS Systems. This warranty does not cover any defect, malfunction or failure caused beyond the control of RTS Systems, including unreasonable or negligent opera- tion, abuse, accident, failure to follow instructions in the Service Manual or the User Manual, defective or improper associated equipment, attempts at modification and repair not authorized by RTS Systems, and shipping damage. Products with their serial numbers removed or effaced not covered by this warranty.

To obtain warranty service, follow the procedures entitled "PROCEDURE FOR RETURNS" and "SHIPPING TO MANUFACTURER FOR REPAIR

This warranty is the sole and exclusive express warranty given with respect toRTS Systemsproducts. It is therespon- sibility of the user to determine before purchase that this product is suitable for the user's intended purpose.

ANY AND ALL IMPLIED WARRANTIES, INCLUD- ING THE IMPLIED WARRANTY OF MERCHAN- TABILITY ARE LIMITED TO THE DURATION THIS EXPRESS LIMITED WARRANTY.

NEITHER RTS SYSTEMS NOR THE DEALER WHO

SELLS RTS SYSTEMS' PRODUCTS IS LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF

ANY KIND.

in

OR

be

free

from

to

products returned

are

ADJUSTMENT".

OF

Procedure For Returns If a repair is necessary, contact the dealer where this unit

was purchased.

If

repair through the dealer is not possible, contact the Customer Service Department, located at the factory by telephone, as directed below, to obtain a RETURN AUTMORIZATION NUMBER.

DO NOT RETURN ANY EOUIPMENT DIRECTLY TO THE FACTORY WITHOUT FIRST OBTAINING

A

RETURN AUTHORIZATION NUMBER.

Be prepared to provide the company name, address, phone number, a person to contact regarding the repair, the type and quantity of equipment, a description of the problem and the serial

Questions regarding returns for repair should be directed to:

SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT

All shipments of RTS Systems equipment should be via United Parcel Service or the best available shipper. The equipment should

if that and of adequate size. If a substitute container is used, the equipment should at least four inches of excelsior or similar shock-absorbing material. All shipments should be directed to the attention of the Customer Service Department and must include the Return Authorization Number.

number(s).

Customer Service Department RTS Systems The Center at 2550 Hollywood Way, Suite 207 Burbank, CA Telephone: (818) 566-6700 Telex: 194855 Telefax: (818) 843-7953

Burbank Aiiort

9

1505 U.S.A.

a

be

shipped in the original packing carton;

is

not available, use any suitable container that is rigid

be

wrapped in paper and surrounded with

Upon completion of any repair the equipment will be returned collect via United Parcel Service or specified ship- per.

Model

TECHNICAL

848A

Matrix Intercom Station / Model

MANUAL

DC848

Data Concentrator

TD OTHER

TW

STATIONS (IF USED);

PSWPS31

INTERCOM

POWER

SUPPLY.

Model

848A

Note:

This block diagram shows a full size system with cable connections for the matrix intercom signals (50-conductor cable), the Pchannel conference-line signals (3-conductor cable), and the serial data bus signals (single-pair, twin shield cable). Alternate cabling schemes and systems arrangements can suit individual requirements.

Figure System

Page

1-1

Block

iv

Diagram

be

configured to besl

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station / Model DC848 Data Concentrator

Appendix A

Table A-d.

Location versus Address Assignment and Cabling

Log

Page

A-1

ADDENDUM TO MODEL 848A/DC848

TECHNICAL

MANUAL

ADDENDUM

Model

by hitting [return] a user may

each of the forth between the two Matrix Displays, the [esc] and [return] keys are alternately used. Status of the bottom- row buttons

Store Configuration: In the System Configuration Menu, when you use the Store Configuration option, the system may store either the pre-programmed configuration or both the preprogrammed and the actual panel configuration

retrieving

.stored configuration, none of the crosspoints currently selected at each panel

retrieved ~o~guration to them. To retrieve only the exact pre-programmed crosspoints, you must use the Reset System option prior to retrieving the configuration.

8slSA/DC848

TW

Dynamic Matrix Display screen: In the System Status Menu, after viewing the Dynamic Matrix Display,

24

panels. Hitting [return] again will then return the user to the Main Menu. To view back-and-

is

indicated using the following abbreviations:

as

it appears at the user station. When you retrieve the conftguration, you have the option of

all

the. crosspoints or only the pre-programmed (from the DC848) crosspoints. When you retrieve a

software update to Version

1

call

up

an

additional display showing the status of the bottom-row buttons for

=

Talk

T1 L1 = Listen

T2

=

Talk 2

L2

=

Listen

/

SP = Speaker

=

MS

=

ALL

AT PM = Panel Mic

1

2

Mic Switch

TALK

6.5

has added the following features:

will

be interrupted; it

will

add the

Mic Kill: In the System Configuration Menu, listed as Number

that all microphones

in

the system are off.

Page Al-l

4

is

now a "Mic

Kill"

option, which assures

TECHNICAL MANUAL

Model 848A Matrix Intercom Station / Model D6848 Data Concentrator

Table

A-2

Parts

List

Reference:

Vendor Directory

Name

3M

AHAM ALLEN-BRADLEY AMATOM AMER RESEARCH AMPHENOL-BENDIX AP PRODUCTS APTRON

I

CS BELDEN BERG, U.M. INC. BOURNS BURNDY CORP BUSSMANN C&K CALRAD IMPORTERS

I

ON

CAMB CANNON USA CONDOR DALLAS SEMI

DENNISON

EAO SUITCH CORP FAIR-RITE F EK FOX ELECTRONICS HIROSE USA HITACHI AMERICA JKL LICON

MOLEX MOTOROLA MWSER

NATIONAL

I

K

NEUTR NPN OAKTRON

Cage Code

Address

BLDG. 502, POB 2963 AUSTIN TX 78769-2963

27901

FRONT STREET, RANCHO CALIF,

1414 ALLEN-BRADLEY DR, EL PAS0 TX

446 BLAKE ST, NEW HAVEN CT 06515

1500 EXECUTIVE DRIVE, ELGIN, 2122 YORK RD, OAKBROOK IL 60521 9325 PROGRESS PKWY, MENTOR OH 44060 9450 PINENEEDLE DR, MENTOR, OH 44060 PDB

1980,

RICHMOND IN 47374

499 OCEAN AVENUE, EAST ROCKAUAY NY 11518

1200 COLUMBIA AV, RIVERSIDE CA 92507 RICHARDS AVENUE, NORWLK CT 06856

W

POB 14460, ST. LWlS

15 RIVERDALE AV, NEWTON

819

1.

HIGHLAND, HOLLYWOOD

10550 TALBERT AV, FOUNTAIN VALLEY CA 92708 580 UEDDELL

300 HOWARD ST, FRAMINGHAM MA 01701 MILFORD CT

PO BOX

6225 PRESIDENTIAL CT, FT MEYER FL 33907 9254 DEERING AV, CHATSUORTH CA 2210 OfVOOLE AV SAN JOSE CA 95131

13343 PAXTON ST, PACOIMA CA 6615 IRVING PK RD, CHICAGO IL 60624 2222 WELLINGTON CT, LISLE IL 60532 3102 N 56TH ST PHOENIX AZ 85018

11433

11731

1913

SEE MOTOROLA

PO BOX 53143, MILUAUKEE UI 53288

DR

#3,

J,

UALLKILL NY 12589

WOODSIDE AV, SANTEE CA 92071 MARKON DR, GARDEN GROVE CA 92641

ATLANTIC AVENUE, MANASQUAN

63178

MA

02158-1082

CA

SUNNYVALE CA 94089

IL

90038

91311

91331

CA

92390

79936

60120

n

j

Phone

Other

ELECTRONIC PRODUCTS DIVISI""

AT1 HEATSINKS

DBA DIV. ROCKUELL DIV. MITE CO

DIV. OF 3M 3M PRODUCT DIVISION ELECTRONIC DIVISION

DIV MIDLAND ROSS

APPLYING FOR CAGE CODE

SEMICONDUCTOR

DIV. ILL TOOL WORKS

SEMICONDUCTOR DIV

DIV. HH SMITH

&

IC DIV

Page

A-2

Model

TECHNICAL

$48A

Matrix Intercom Station / Model DC848 Data Concentrator

Parts

Vendor Directory,

MANUAL

List Reference:

cont'd

PANDUI T PEW PENN ENG PIHER RCA ROBINSON NUGENT INC SAMTEC SCHURTER SELCO SIFAM SIGNETICS SILICONIX SMART SMITH, HH (DIALIGHT) SWTHCO SPECTRA STANLEY SWITCHCRAFT THERMALLOY TRW CONN

&

MANU

17301 RIDGELAND AV, TINLEY PK IL 60477-0981 PO BOX 1000, DANBORO, PENN

DANBORO, PA

903

FEEHANWILLE DR, MT PROPSPECT IL 60056

800 E 8TH ST, NEU ALBANY IN 47150

810

PROGRESS BLW, NEW ALBANY NY 47150

1016

CLEGG CT, PETALUMA CA 94952

7580

STAGE RD, BUENA PK CA 90621

SEE SELCO

811

E ARGO AV, SUNNYVALE CA 94086 2201 LAURELUOOD, SANTA CLARA CA 95054 SEE DALLAS SEMICONDUCTOR

1913

ATLANTIC AV, MANASQUAN NJ 08736 212 N BRINTON LAKE RD, CONCQRDVILLE PA SEE AMPHENOL

10

OCEAN AV, COPIAGNE NY

5555 N ELSTRON AV, CHICAGO IL 60630-1314

2021

W VALLEY VIEW LN, DALLAS, TX 75381

1501 MORSE AV, ELK GROVE VILLAGE IL

19816-

1000

18916

19331

11726

60007

312-532-1800 215-766-0371 215-766-0371 312-543-6400

SOLID STATE DIV

812-945-0211

81

2-944-6733

707-778-631

714-521-8673 ALSO: SEL SALES, INC

516-842-8866

214-243-4321

31

2-987-6000

1

DIV OF

RAYTHEON

Page

A-3

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station / Model

Table

Parts List Reference:

Cage Code Cross-Reference

A-3

DC848

Data Concentrator

OEM Part

No

OEM CAGE CODE Vendor Part No

EC100F-5 8216-A-0632 9293 9475A0632 2334 95328-8-0440 95328-8-0440 95348-

99-910 A4-10-501-20 3341-1L THlS4 KF2-440 EC100F-3 852200F006 81AlA-824-S15 PTClOLVPlOK PTlOyv20K MR502 J305/E305 2N5210 74HC04 63A03RP 74HC573 74H6139 LM317 LM3800N-8 LM383T CD4053 BE NE5532-N ESBR3441 8099SBP K405 99-456 DIL8P-108 DIL14P-108 DIL14P-108

1416-6 1416-6

-

S

8-0632

Log

VENDOR

06383 06540 83330 06540 83330 06540 06540 06540 83330 83330 61 706 94222 04963 06383

CAGE

46384

06383 04713 08116 54869 54869 04713 17856 04713 27014

HITACHI

27014 27014 27014 27014 27014 02735

18324 61544 55335 65832 61706 09922 09922 09922

CODE

Item

of

Sum~y Part

No

CAGE CODE

Page

A-4

Model

TECHNICAL

848A

Matrix Intercom Station / Model DM Data Concentrator

MANUAL

OEM Part No OEM

60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 68572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572 60572

60572 60572 60572 60572

CAGE

Vendor Part No

CODE

.

.-

~1~16~-108- DIL40P- 108 DS1213 DS1213 DIL20P-'08

1CT-286-S-X 65610-410 30-552A 30-560A 30-550A

09-65-1031

09-50-3041

08-50-0108

08-50-0106

09-50-3031

09-50-3021

09-75-1158

09-74-1061

09-74-1031

08-50-0106

65610-410

65610-420

65610-426

08-50-0106

65610-414

66900-014

3473-6016

6561 1-410

3428- 1202

929647-01 -06

HLSS100-3

HLSS100-5

HLSS100-10

57- 10500-27

66900-020

3399-6026

861178EFRA9S

VENDOR CAGE CODE 09922

-

09922 DALLAS SEMI SMART/BALLAS SEMI 09922 06776 29440 535 14 535 14 53514

27264 27264 27264 27264 27264 27264 27264 27264 27264 27264 29440 29440 29440 27264 29440 29440 29440 29440 04963 29440 04963 80266 06383 06383 06383 06383 74868 29440 04963 74860

I

tern

of

-.

-

.

-

--

Supply

Part No CAGE CODE

-

--

-- - -

-

.

Page

8-5

Model

TECHNICAL

848A

Matrix Intercom Station / Model

MANUAL

DC848

Data Concentrator

MN114B MN114B 30-454 30-453 AXR-5-31

HA16PR-3s SEP- 10K8-02 CE100F24-3 CE100F24-5 30-453 AXR-5-31 WP664012CG

LM9003

LM9003 42TM018 542- FB43-287 542-FB73-287 8431352801 020 8431352801026 8431352801010 8022 922345-02 S210-250 S210-250 C212 99-920.8 MDL-2

031.1666 FAUO3l .3573 049 249 7-362

-

BA

82389 82389 535 14 53514 71468

0ag18

55322 06383 06383 53514 71468 59940 081 16 081 16 5081 1 5081

1

5081 1 74868 74868 74868

16428 80266 59270 59270 59270 61 706 71400

FEK

61935 61429 13103

1e188

Page

A-6

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station / Model DC848 Data Concentrator

REVISIONS FOR THE

Date Edition

-

6/89 3rd Cover Added: Second Printing, June 1989. 6/89 3rd Cover Changed: 9010-5545-00 to 9000-5545-00.

6/89 3rd 6/89 3rd 6/89 3rd 6/89 3rd 6/89 3rd

SECOND

Pave No.

ii Added: Second Printing, June 1989. ii Changed: Edited 6-14 Added: Page 6-14 (missing in previous edition). 7-11 7-25 Repalced: Drawing SD300-09 with

PRINTING:

of

Descriotion

-

7-17 Deleted: "A" from the

Revision

by

to Sheryl

848.

D.

Thompson.

SD3000

sheet

#11.

RTS Systems,

Inc.

Burbank,

CA

91506 / FSCM: 60572 'I'M5545 / Third Edition, August

Page A-7

1988

TECHNICAL

MANUAL

Model

SECTION

1.1

1.1.1

(See Figure

1:

DESCRIPTION & SPECIFICATIONS channel. The conference line channels and point-to-

DESCRIPTION

System and Model WA Description

1-1,

Model

848A

Matrix Intercom Station / Model DC848 Data Concentrator

848A

System Block Diagram)

Point-to-Point Matrix Intercom

A

Model

tions, connecting cables,

848A

system consists of Model

and,

848A

sta-

optionally, a Model DC848 Data Concentrator and data terminal (a per- sonal computer

Each

848A is

system which

as

24

stations. Each station

can

be

used as a terminal).

a station in a point-to-point intercom

can

have

as

few

as 2 stations or

can

talk to a single station

as

many or combination of other stations. Any configuration of multiple stations

called a matrix. In the matrix, up to

in

this system is

12

separate conversations may be in progress at any time. Each conversation requires two talk paths to two listen

buses. Each talk path is the listen bus for one of the

twenty four stations.

point channels may

848A

Model Each Model

be

used at the same time.

Station Micro~rocessor

848A

is equipped with an internal micro-

processor which provides electronic switch-action

link

(momentary /latching), and a

to the Model DC848 Data Concentrator. If the power fails, the station remembers its settings. The settings are re- stored when the power returns.

1.12

System

Connecting a Model DC848 to the

and

Model DC848 Description

848A

system adds

these functions to the system:

1.

CallTally

2.

Received Call Stacking

3.

Remote-Control / Programming Capabilities

1.

The Call Tally function means that the pushbutton

corresponding to the calling station

will

flash on the called station's panel, telling the operator visually which station is calling.

In a typical operating example, a user (caller) chooses the station he wishes to talk to by pressing the push- button corresponding to the called station. The

can

station station same listen bus

then hear the calling station. No other

can

hear this message unless it shares the

as

the called station or more than one

called

station has been called by the caller. The called station answers tbe calling station by

pressing the pushbutton corresponding to the calling station. If the

848A

system includes a DC848 Data

Concentrator, a call may also be answered by pressing

call

the

answer pushbutton, which is marked with the station's own number with a colored insert. When the communication is completed, each station releases and the connection is broken.

A station

can

talk to all other stations at once, by

pressing the ALL TALK button. Conference Intercom

TW

Each Model 848A station has two

Intercom con-

ference-line channels, which either connect to an RTS

TW

Systems

Intercom System, or interconnect 848A stations for two channels of isolated conference inter- com. These conference lines, Channels

1

&

2,

have

front panel TALK and LISTEN switches for each

2.

The Received Call Stacking function means that station will

can

is

called by several stations, the called station

make a queue of the calling stations. This queue

be answered in succession by pressing the Call

if

Answer pushbutton.

3.

The Remote Control / Programming Capabilities

allow the Model

848A

to be controlled and programmed remotely by connecting either a computer or a "dumb" terminal to the Model DC848 data bus. The software for the 848A and

DC848

lets

each station be programmed individually in real-time. Features programmable with this setup include: a. Forced Crosspoint. Sets up a one way voice

communication path between two stations.

b. Inhibit Crosspoint. Inhibits voice path and tally,

one way, between two stations.

(Continued)

a

Page

1-1

TECHNICAL

MANUAL

Model

Panel Switch Action (Latch Disable). Sets the

c.

switch action for an individual panel switch, either momentary only or both momentary

and latching.

Hands-Free Answer (Auto

d.

e.

f.

g.

h.

station automatically to allow hands-free answering

"Instant

'!Instant Sveaker OQ".

Auto Talh,

Panel Grou~ Assignments. Assigns panels into

preset groups.

is

Mic

Onw.

turn on automatically whenever a call originated.

turn on automatically whenever the station

is

called.

Flash

pushbutton will flash when called. Can set from a 10-second minimum to a second maximum in

84&4

Matrix Intercom Station / Model DC848 Data Con=nt,rator

Reci~rocal). When a

called, 'its microphone turns on

When set, the microphone

When set, the speaker will

Erne.

Adjusts the time the

10

second increments

in a system with a DC848 connected. This button

also

the station address.

All

pushbuttons have two levels of brightness.

activated button has a higher brightness.

The third row of eight pushbutton switches are

follows:

1

TALK INTERCOM CH.l

1

LISTEN INTERCOM CH.l

TALK

MIC

(selects panel microphone when

ON or headset microphone when

or headset, whichever PANEL MIC switch)

848A

Connections, Inputs and Outputs

will

is

be

60-

COW CONF COW 2 TALK INTERCOM CH.2 CONF 2 LISTEN INTERCOM CH.2

ALL

PANEL

SPKR ON (spe OT er on) MIC ON (enables mic circuit in either panel mic

1.1.4

Model

Front Panel

is

selected by

is

An

as

Dvnamic Comlink Dis~la shows stations

a.

that are connected and responding to the DC848 data concentrator.

b.

wy

possible talk paths in current system and their status.

j.

Svstem Confirmration. Allows preset

be

configuration to retrieved. There

Password Security. Sets a password, preventing

k.

unauthorized use, either by terminal or modem.

1.13

Model

The operational controls are:

Three rows of pushbutton switches, and The master VOLUME control.

The fvst two rows of the called point to point matrix stations, except for the one pushbutton with a colored insert.

is

the "Call Answer" pushbutton, and

ton

848A

Operational Controls

stored into memory, and

is

also a reset choice.

24

pushbutton switches select

shows all

This

pushbut-

is

active only

Dynamic Microphone Headset Connector.

Carbon Microphone Headset Connector. Rear Panel POWER

AUXILIARY CONNECTION connector, 5104.

TW

EXTERNAL LOUDSPEAKER connector, SERIAL IN connector, SERIAL LOOP-THRU connector,

LINE

Auxiliarv Connections

The auxiliary connections on the back panel of the Model an unswitched microphone preamplifier output and additional connections to the front panel.

The program input accepts a -10 dBu signal which

distributed to both the loudspeaker and the headsets.

The level The unswitched microphone output provides a

10 dBu line level signal from the Model microphone preamplifier.

INPUT

INTERCOM SYSTEM LINE

5602 (Conference Line, Two Channels).

connector,

5702

(12

volt ac/dc).

INPUT

51001.

51002.

CONNECTION connector,

848A

provide the user with a program input,

can

be

adjusted on the adjustment card.

5401

connector,

5204.

848A

is

-

Page 1-2

TECHNICAL

MANUAL

Model

848A

Matrix Intercom Station / Model DC848 Data Concentrator

Additional connections for an external panel microphone and headset. A remote microphone

switch

foortswitch,

together to

1.1.5

is

also available. Any switch, such as a

can

be used to short the two terminals

turn

on the microphone circuit.

Model 848A

Preset

(Trimpot)

Adjustments

The preset adjustment pots are located behind the

small

rectangular panel to the left of the loudspeaker. To access the adjustments, press the rectangular panel lightly, then release, this will unlock the panel. Pull the panel out

far as it

will

go.

as

Behind this small panel, on a circuit board, in two rows, are the following ten adjustment pots:

Top Row

LISTE!.N/TW LISTEN/TW 2

1

Conference Line 1 level Conference Line

2

level LISTENIALL (Talk) Page level LISTENIMATRIX

24

point-to-point stations

LISTE!.N/PGM Auxiliary program

1.1.7

Package

Model

848A

Package

848A

is

The Model signed to fit a standard units of space. The Model

x

19" wide

x

7"

enclosed within a metal case de-

19"

rack and occupies two rack

848A

measures 3.47"

deep and weighs

6

pounds.

high

Model DC848 Package The Model DC848

is

enclosed within a metal case de- signed to fit in a standard 19" rack and occupies one rack unit of space. It

is

1.75"

high

x

19" wide x 10"

deep, and weighs 2.2 pounds.

Bottom row BAL/1 Conference Line

1

balance BAL/2 Conference Line 2 balance SIDETONE Headset Sidetone Level

Adjustment

DIM Speaker Attenuation during

Mic on

MIC Microphone gain

adjustment

1.1.6

Power

Model Each Model

to operate.

848.4

Power

848A

requires 12 volts ac at 1.4 amperes

This

power

is

supplied by an RTS Systems Remote Power Supply--included with each unit. The power supply comes in two types, one

is

whose mains input second type whose mains input

117 volts/50-60 hertz ac, or a

is

2U)

volts/50-60

hertz ac. Model DC848 Power The Model DC848 requires 12 volts ac at

0.5

amp-

eres, and comes with its own RTS Systems Power

848A

Supply Unit normally identical to the

supply.

Page

1-3

TECHNICAL

MANUAL

Model

1.2

SPECIFICATIONS

12.1

MODEL 848A MATRIX INTERCOM SYSTEM SPECIFICATIONS

Bus Complement

24

balanced distributed talk/listen buses

1

balanced distributed all talk bus

2

TW

Intercom 2-wire buses

Audio Level/Bus Impedance

Distributed Summine Buses

-10

dBu,

test level

-20

dBu,

nominal level

TW

Intercom Lines

dBu,

test level

0

-10

dBu,

nominal speech

Station Bridging Impedance

848A

Matrix Intercom Station/Model DC848 Data Concentrator

.

500

ohms

500

ohms

200

ohms

200

ohms

Distributed Summing Buses

TW

Intercom Lines

Distributed Summing Bus Termination

(One termination per system bus

Termination plugs may

Up to 8 stations

Up to 16 stations

Over 16 stations

Recommended Maximum System Size

Number of stations

(bus level lowered by

4

Stations per bus

(same listen channel)

Operating Distance

balanced-pair cable,

#22

gauge wire

be

with

is

usually required.

ordered from RTS Systems.)

3

dB)

12

kilohms, nominal

6

kilohms, LISTEN selected

10 kilohms, nominal

680

ohms (RTS Systems

1500

ohms (RTS Systems Part Number 9020-5189-02)

No termination

5,000

feet

Part

Number 9020-5189-01)

Page

14

TECHNICAL

MANUAL

Model

1.2.2

MODEL 848A INTERCOM STATION SPECIFICATIONS

Microphone Preamplifier

Input Input Impedance

Source Impedance

Maximum

Voltage Limiter Range

Frequency Response Output (rear panel access)

(load impedance 10K ohm)

Headset Microphone

sensitivity required

Headset Microphone

Source Impedance Range

Headphone Amplifier

Input Level

Gain

848A

Matrix Intercom Station/Model

Switchable, panel or headset Mic

500

ohms/dynamic Mic

800

ohms/lO milliamperes max carbon Mic

200

ohms, nominal

150

millivolts

50

dB, nominal, adjustable 30dB 100 hertz to 10 kilohertz,

-10 dBu, test level

-21

dBu, nominal speech level

-50

dBu minimum

100 to 1000 ohms

BC848

f

Data Concentrator

3

dB

Output Power

Frequency Response

Headphone Impedance Range

Loudspeaker Amplifier

Output Power

into

8

ohm speaker

Dim

Range

(dim

when Mic on)

Frequency Response

User Adjustable Level Trimpots

Listen Bus (1

All

talk listen

TW

Intercom Channel 1 listen

TW

Intercom Channel 2 listen

Sidetone (only in headphone)

Program input

of

24

system buses)

1

watt into 8 ohms

300

milliwatts into

150

hertz to 8 kilohertz, 23 dB

25

to

600

ohms

2

watts into 8 ohms

3

dB to

20

dB, adjustable

150

hertz to 8 kilohertz,

(Continued)

32

ohms

3

dB

Page 1-5

TECHNICAL MANUAL

Model

1.2.2

MODEL 848A INTERCOM STATION SPECIFICATIONS

Auxiliary Connections

External Headset

External Panel Microphone External Electret Panel Mic External Microphone On--Off Unswitched Mic Output Program Input

Power

And

Mechanical

848A

Power Requirements

Power Supply Module

Power Requirements from Mains:

Dimensions

@-I0

84814

Matrix Intercom Station/Model DC848 Data Concentrator

@-lo dBu

dBu,

10K

ohms

12

volts ac / 1.4 amperes / 45-440 hertz

25

volt-amperes, typical

30

volt-amperes, maximum

250

volt-amperes surge,

(Continued)

25

milliseconds

6

Weight

Finish

Front Panel Rear Housing

Connector Requirements

Matrix Intercom;

Audio Line Connector Line Cable

TW

Intercom;

Audio Line Connector

Line Cable

Serial Data Connector Serial Data Loop-Through

Headset Connector

Dynamic Mic XLR-type, 5-pin female Carbon Mic

Power Supply 4pin circular

Type

pounds,

Enamel Paint, light gray Gold Iridite

50-Pin Microribbon male

25-Twisted Pair, unshielded, or 50-Conductor Flat Ribbon Cable

XLR

type, 3-pin female

Belden

equivalent

9

+"

8723

"D"

pin "D" female

phone jack, 3 circuit

2.75

twin

male

kilograms

pair or

Page 1-6

TECHNICAL

MANUAL

Model

1.23

MODEL DC848 DATA CONCENTRATOR SPECIFICATIONS Connections Connection to Terminal or Modem: 5101:

Terminal Mode DEC VTlOO or equivalent. Settings:

Modem Mode Remote terminal to emulate DEC VTlOO or equivalent.

Settings:

selected, 8 bits, 1 start bit, 1 stop bit,

Connection to string

Parameters RS485 half duplex serial communication network

78.6 kilobaud, 8 bits,

Power And Mechanical

%00

9600/4800/2400/1200/600/300

84814

Matrix Intercom Station/Model

RS232

baud, 8 bits, 1 start bit, 1 stop bit, no parity.

baud,

software

no

parity.

of

Model 848A stations: 5102/5103: RS422,

1

start, 1 stop bit.

DC&Q8

Data Concentrator

Power Requirements Power Supply Module

Power Requirements from Mains: 10 volt-amperes, typical

Dimensions

Weight 2.2

Finish

Front panel Rear Housing

NOTE:

All

12 volts ac

pounds,

Enamel Paint, light grey gold iridite

0 dBu 0 dBm

product information and specifications are subject to change without notice.

=

0.775 volts r.m.s.

=

1

milliwatt

/

0.15 amperes 145-440 hertz.

15

volt-amperes, maximum

50

volt-amperes surge,

1

kilogram

25

milliseconds

Page 1-7

Model

TECHNICAL MANUAL

84814

Matrix Intercom Station/Model DC848 Data Concentrator

Model

Figure

848A

Page

2-1

Rear

1-8

Panel

Model 848A

TECHNICAL MANUAL

Ma&

Intercom Station / Model DC848 Data Concentrator

SECTION

2.1

INSTALLATION PROCEDURE

2:

INSTALLATION

connectors on the back of the Model are labeled JlOOl and 51002, and wired parallel. The the Model

data

DC848

connectors on the back of

are

labeled J102 and 5103,

848A

in

Page

2-

1

TECHNICAL MANUAL

Model

848A

Matrix

Intercom Station / Model

Table

2-1

DC848 Data

Concentrator

Matrix Audio Cables, Splitters, and Termination Plugs Required

Page

2-2

TECHNICAL MANUAL

Model 848A

Conference Audio Cables, Splitters, and Termination Plugs Required

Matrix

Intercom Station /Model DC848 Data Concentrator

Table

2-3

Page

2-4

TECHNICAL MANUAL

Model

848A

Matrix

Intercom Station 1 Model DC848 Data Concentrator

Table

2-4

Location versus Address Assignment and Cabling Log

Page

2-5

Model 848A

TECHNICAL MANUAL

Matrix

Intercom Station / Model DC848

Table

2-5

Station Select

Dip

Logical

Switch Setting Chart

Address:

Data

Concentrator

Page

2-6

TECHNICAL MANUAL

Model 848A

2.2

MECHANICAL INSTALLATION

The Mode1 848A mounts in an EIA standard 19-inch equipment Allow room for the panel microphone and controls in front and the cabling in the rear. There are no ventilation requirements.

The Model DC848 Data Concentrator mounts in an EIA standard 19 inch equipment rack, and, high. Allow room for cabling in the rear. There are no ventilation requirements.

2.3

2.3.1

Power transformer. The 14 volt connects to a a four pin circular connector (plug). This connector plugs in to a mating four pin circular power input connector (receptacle) rear panel. Tighten the retaining ring on the four pin circular plug.

A

single 2 ampere slow-blow fuse, F701, is located on

the 848A rear panel. Replace only with a 2 ampere

slow-blow fuse. Metric fuses can carrier 2802-0006-00 (Schurter

rack/enclosure, and is two rack units high.

ELECTRICAL

Power

is

supplied to the Model 848A via a step down

ac

is

changed

to

an

RTS Systems part number:

FEK

Matrix

Intercom Station /Model DC848 Data Concentrator

is

one rack unit

output of the transformer

,

J702, on the Model 848A

be

used when the fuse

031.1663).

and 51002, and the two connectors on the rear of the

DC848, J102 and 5103.Interconnect the data

connectors of the Model 848A's using RS422 9-pin

data cables. Connect one of the Model 848A

stations on the end to the Model DC848. The data connectors on the back of the Model 848A are labeled JlOOl and J1002, and wired in parallel. The data connectors on the back of the Model DC848

labeled 5102 and 5103, and also wired in parallel.

(See System Block Diagmm on page ix).

In

some installations it will

to complete the string of digital cables. System Diyital Connections. DC848 to Terminal or

Personal Com~uter Use a standard RS232 cable to connect the DC848 to a

terminal. Use a null modem RS232 cable to connect the DC848 plugging into the DC848A is a 25 pin female DB25 connector. The mating connector on the DC848 is 5101, a male DB25 connector. The type of connector on the end of the cable plugging into the terminal or personal computer is determined by the terminal or personal computer. Qn the follows:

Pin2.

Pin Pin 7 Shell

to

a personal computer. The end of the cable

...........

3

............

...:........

be

necessary to use a splitter

DC848 end the connections are as

Ax .Tx .Gnd .Shield

are

23.2

Signal

2.3.2.1

Svstem Audio Connection The 25 pair audio cables from the 848A

interconnected in parallel to form 25 balanced audio

buses. Connect the cables in parallel by using Model 4025A 1 5401 on each 848A to a splitter assembly. Splitter assemblies are interconnected with the male on one splitter to (See Figure 1-1, System Block Diagram on page ix). termination plug is sometimes required (explained below).

Svstem Digital Connections. 848A to 848A to DC848

System digital connections are required when a The Model 848A Model DC848 is used in the system. The system back panel, which sets the listen bus. digital connections are paralleled RS422 cables. These cables may connected by looping through on the two connectors on the rear of the 848A, 51001,

System Audio and Digital Connections Conference Line

X

5 Splitter Assemblies. A cable is run from

25

pair

a

female on another splitter.

cables from

in

the system

See Section 2.4 for further details

(TW)

Connection

TW

The Model 848A provides two conference-line channels. To

are

connect, simply insert a 3-pin XLR type male connector from the

back panel of the Model 848A. However, this input

will not power Intercom System Manual for details on how to install and use a

A

23.2.2

23.2.2.1

Back Panel Jum~ers

On the Model 848A, it is not necessary to use the back panel programming section to inhibit

Page 2-7

connector on the back panel of the

TW

Intercom line into the 5602 input on the

a

TW

Intercom system. Consult the

TW

Intercom System.

Listen Bus & Logical Address Selection

Listen Bus Selection (Audio)

has

a Listen Bus Selection area on the

a

station from

TW

Model 848A

TECHNICAL MANUAL

Matrix

Intercom Station /Model DC848 Data Concentrator

calling other stations as was necessary on the Model MS.

The Model 848A must be assigned its own station listen bus by using jumpers. One of these jumpers connects a pin in row C to the corresponding pin in row D; the other jumper connects a pin in row E to the corresponding pin in row

24

one of the electronics of that unit.

The pushbutton on the front panel corresponding to the

listen address must now be designated accented with a colored filter. This key represents its

own station

The position of this key must correspond to the listen

address selected by the jumpers on the rear panel.

23.2.23

Dir, Switch Setting Step 1: After setting the Station Listen bus on the

panel, open the cover to access the internal dip switch.

Step 2: Using the dip switch settings given in Table 25, set DIP SWITCH on the rear panel and designated as a "call answer"

pushbutton on the front panel (see above).

23.2.3

Logical Address Selection (Digital)

System Termination Plugs

balanced listen buses to the listen

call

and can

SlOl to correspond to the address set

F.

Pins CD and

be

used for auto call answering.

EF

connect

"call answer" and

rear

terminate J602 on the back panel, with termination plug

RTS

P/N

9020-5 188-00.

23.2.4

Auxiliary Connections The auxiliary connections on the back panel of the

Model 848A provide the user with a program input, an unswitched microphone preamplifier output and access to front panel connections. The program input accepts a

-10dBu signal which is distributed to both the loudspeaker and the headsets. The level can on the adjustment card.

The unswitched microphone preamplifier output provides a -10

848A microphone.

Using a standard Molex

(supplied in your package), auxiliary connections provide additional connections for the panel microphone and the various headsets. A remote microphone switch, such set up in this way.

m

Installing Additional Features

dBu line level signal from the Model

KK,

0.156 center connector

as

a footswitch, can be also be

Auxiliaw Connector

Pin Numbe~

Description

be

adjusted

Matrix Lines and All Talk Bus

The matrix lines and the balanced all-talk bus should have an impedance between 500 and 600 ohms for

A

proper operation. terminations should be plugged into the system line at one location only. This termination plug is not provided with the Model Systems.

For two to eight stations, the terminator has twenty-five 680 ohm resistors (RTS P/N 9020-5189-01). For nine to sixteen stations, the required terminator has twenty- five 1500 ohm resistors (RTS P/N 9020-5189-02). For seventeen or more stations no resistive termination is

required.

TW

Connector Termination

Each

TW

System line must be terminated with 200 ohms. If the the termination is provided by the RTS Systems' power

supply. If the

TW

termination plug with 25 resistive

848A, but may be ordered from RTS

line is used with an RTS

TW

input connections are not used,

TW

System,

Not connected PGM program input high PGM program input low Unswitched Mic preamp output high Unswitched Mic preamp output low Mic switch ground Mic switch (low=on) EPM LOW Electret Panel Mic input low EPM

HI

DPM LO Dynamic Panel Mic input low DPM HDM LO Dynamic Headset Mic input low HDM

HP

Electret Panel Mic input high

HI

Dynamic Panel Mic input high

HI

Dynamic Headset Mic input high

LO Headphone output low

HI

Headphone output high

Page 2-8

TECHNICAL

MANUAL

Model 848A

Remote Micro~hone Switching

There are two ways Through the rear panel Mic switch, or via a phantom connection through the dynamic headset connector.

Rear Panel Microphone Switch:

A

remote footswitch or other

connected to the auxiliary connector through pins 6 and

7.

When the switch is closed the microphone signal is

turned on and the front panel tally (in the Mic ON pushbutton) will illuminate Note that the front panel pushbutton may override the remote switch and

to

switch a remote microphone:

lock

on the microphone switches.

Matrix

Intercom Station / Model DC848 Data Concentrator

dry

contact may

to

its bright (active) state.

be

Remote Microphone Switch Through the Dynamic Headset Connector:

The microphone-on function may be remote-controlled by connecting a 4.7 kilohm resistor from each side of the dynamic microphone transformer balanced input on

to

fiont panel, through a switch

the

Figure 2-2) This feature keeps noise from the

microphone pre-amplifier off the buses when the microphone is off. This feature also improves the

performance of large systems.

microphone termination input and add significant noise to the system, causing possible instability.

A

ground.

switch can short the

(See

MIC HI

MIC

LO

GROUND

HEADPHONE

figure

Remote Microphone Switch Through The Dynamic Headset Connector

2-2

SIGNAL

Page 2-9

TECHNICAL MANUAL

Model 848A Matrix Intercom Station /Model DC848 Data Concentrator

2.4

MODEL DC848 SERIAL FORMAT

The RS232C serial format for the Model DC848 Data

%00

Concentrator is: no parity.

A terminal must emulate DEC's (Digital Equipment Cor-

poration) VT100-type terminal for the proper escape se-

quences and control characters terminals may require a null modem adapter or gender change or both.

The Model DC848 directly into a terminal. Use a null modem adapter or null

modem type cable to plug into a computer.

Pin 2 Rx Pin 3 Tx Pin 7 Gnd

Shell Shield

2.5

FACTORY CONFIGURATION

Each DC848/848A System leaves the factory in this con- figuration: programmed for inhibit, which will disable the 848A front panel buttons from responding the switch.'"Hands Free Answer" and "Instant Mic" disabled. The tally flash time is set for 40 seconds.

There are not forced latch disabled switches and no group assignments. The Security Password is factory set at

2.6 for details on Computer Programming Functions.)

2.5.1

AU

Installing CPU Board

baud, 8 bits, 1 start bit, 1 stop bit,

used

by the DC848. Some

is

RS232 configured as

undesignated 84844 station addresses

if

there is no designation in

talk

paths, no inhibited

OOOOOOO.

DCE

to plug

talk

paths, no

(See Section

Jumpers

m

2.6

COMPUTER PROGRAMMING FUNCTIONS

Enhanced operating functions (explainedbelow) are avail-

to

able DC848 Data Concentrator, associated connecting cables, and a customer furnished DEC VTlOO terminal or equivalent. A personal computer with VTlOO emulating software may be used instead of a VTlOO terminal. The terminal or computer is plugged into the DC848.

The enhanced operating functions keying in commands to the system via the terminal or computer ("programming"). When keying in commands

via

a command unless stated on the screen. Pressing "escape" will return the display back to the previous menu or to the Main

The numbers associated with a panel are keyed in as two digit numbers (for example, 01, 02,23, number combination in the case of the Intercom Lines (for example, T1 or L2). The "return" or "enter" key is not required to enter the number. The numbers associated with commands ample, 1,2,5,6. The "return" or "enter" key is not required to enter the number.

2.6.1

ForcedDnhibited Crosspoints (ForceIInhibit A Talk Path) The forced/inhibited crosspoints function forces or in-

hibits a fixed combination of buttons can Once programmed, the fixed parameters of the cannot inhibited until reprogrammed at the local terminal or per- sonal computer.

a Model 848A system which includes a Model

are

implemented by

the menus, it is not necessary to hit "return" to execute

Menu.

24),

or a letter-

are

keyed in as single digit numbers, for ex-

Explanation of Functions

talk

path between 84814 stations. Any one or

be

locked in or locked out.

talk

path

be

cleared at the panel and will remain forced or

To enable certain functions of the DC848, the following

jumpers (or switches) must be activated on the

CPU Board prior to installation:

J1,Pins 7 or S1, switches 6

J1, Pins or S1, switch 8:

Seepage7-36 for location of J1, orpage7-36Afor location of S1.

Note: S 1-1 through S 1-5 are not used and should be left the OFF position.

9

&

8

10

&

7:

Enables DC848

modem operation

Enables the password function

Page

Rafch

The Panel Switch Action function can change the action of selected buttons from momentarvlalternate to momen-

tary

only, disabling any latching action. ~ands-~ree Answer (Automatic Reciprocal) The Hands-Free Answer function can set

to respond automatically to other selected 848A stiltions, leaving a user's hands free. When the programmed station calls, the

At the called station, Hands Free Answer indicates an established

in

inadvertent "eavesdropping" in case the visual connection signal (brightly lit button) is unnoticed.

2-

10

talk

path

talk

is

instantly established.

path

with a beep.

an

This

beep prevents

ill

848A station

TECHNICAL

MANUAL

Model 848A

Matrix

Intercom Station 1 Model DC848 Data Concentrator

"Instant Mic On"

When set, the microphone will turn on automatically

a

whenever

call is originated.

"Instant S~eaker On"

him

When set, the loudspeaker will automatically

whenever a call

is

received.

on

Tallv Flash Time When a call is received at an 848A station, the

pushbutton corresponding to the calling station will

talk

path

is

flash (if the

not already on), providing a

tally that tells the responding operator where the

incoming call originated.

If

the

talk

path is already on, then the communication is already established and tally is not required. The length of time the pushbutton will

to

flash is variable from a 10-second minimum

a 60- second maximum and can be set from the Tally Flash Time Menu. Press

L

or S to lengthen or shorten the

tally time.

Panel Group Assignment Using the Panel Group Assignment List, 848A units

within the matrix can be programmed into preset groups. Each group would then act as a single unit in receiving communications from the panel being programmed. Up to four groups can be created, and

as

many units as needed can be assigned to each group. SYSTEM STATUS

Dvnamic Comlink Dis~lavs This display indicates all 848A panels that are currently

communicating with the Model DC848 on the RS485 serial line. This status display is dynamic, meaning that it will reflect a change in status

as

it happens, without

reset. There are two ways to get to this display: 1) By

choosing or

#1 on the Dynamic System Status root menu,

2)

By hitting [return] whenever any menu displays the message, "THIS panel not communicating with the system".

Dvnamic Matrix Status Dis~lay

SYSTEM COmGURATION This series bf displays allows a user to save into

memory all programmed parameters (i.e latch disable, groups, forced crosspoints and all other settings throughout the entire

system) so that the data is not lost.

~ara~eters may be sa;ed and recalled for two full

configurations.

There

is

also

a

reset

Password Security Menu The Password Security Menu is designed to prevent

casual or inadvertent tampering with system settings, and to prevent unauthorized use of the modem connection. After entering the password into the system by following the sequence, it is recommended that whenever you exit the program you do so into the Security Mode. As an additional security measure, unplug and remove the terminal from the

,

programming is completed. When accessing the system

DC848 when

by modem, an exit into the Security Mode automatically disconnects the modem.

There is a

safeguard built into the system in the event that the password programmed into the system is misplaced, unknown or forgotten. First remove the DC848 cover, then remove the jumper from

J1

10 or turn off switches 6 & 7 of S1 (see page 7-36 or 7-36a for the location). This will enable you to access the system without a password. Next, choose the Password Security menu and create a new password.

9

&

Finally, replace the jumper on

&

7

switches 6

of S1.

This will activate the new

J1 pins

10 or turn on

password.

2.6.2

Programming the

848AIDC848

Enhanced

Functions The Main Menu

The 848A enhanced functions are programmed via computer screen menus from the

DC848. The first menu, The 848A Main Menu (See Figure 3-3), lists a submenu for'each enhanced function. Enter a single digit to display an enhanced function submenu.

Pins

9

&

This display indicates all possible

talk

paths in the system and their current status (i.e. communicating, not communicating). This display can be reached though the Dynamic System Status root menu. A Panel number

appears in the appropriate crosspoint to indicate that the

"--"

crosspoint button has been illuminated.

indicates

that the crosspoint button is off.

Page

2-

11

TECHNICAL

MANUAL

Model 848A

IMPORTANT NOTE:

If there is a beep and the following message appears:

"THIS PANEL NOT

WITH THE SYSTEM",

entering the 2-digit panel number or go to the

System Status Display to recheck panel status.

The Forcellnhibit A Talk Path List (Forced Crosspointk

On the FORCE/INHIBIT A TALK PATH LIST (See

Figure 3-4A) the panel number being displayed or pro-

grammed is at the top of the screen. The chart lists the

talk

path switches in this panel that access the other

panels in the system, and shows the status of each

("ON indicates a forced

talk

forced always ON state independent of the corresponding button, choose OFF state, choose "2". Once you have chosen the function, you must choose the other panel number in the path to be forcedfinhibited.

path). To force a

"1."

talk

To inhibit a talk path

Matrix

Intercom Station / Model DC848 Data Concentrator

COMMUNICATING

select another panel by

path,

"--"

talk

indicates a non-

path (crosspoint) to an

to

an always

The Hands-Free Answer List (Auto Reciprocal): The HANDS-ME

stations the 848A operator can automatically respond to when that station calls. The panel number being displayed or programmed selected panel number will show as 3-7A) To program this feature, choose "1"; to de-

program this feature, choose "2". Then enter the two-

digit panel number to be changed. (See Figure 3-7B) The Panel Instant Mic Assignment List The PANEL INSTANT MIC ASSIGNMENT LIST

enables a user to particular panel. (See Figure 3-8) To use this feature,

first display the number of the panel you want to program. To program this feature choose

program this feature, choose digit panel number to be changed. A panel which has Instant Mic will appear on the display

ANSWER

is

turn

on the Instant Mic function for a

LIST shows which

at the top of the screen. A

"HF.

"2".

Then enter the two-

as

"IM.

(See Figure

"1";

to de-

;

From that point, there is a toggle ON/OFF action for that function. If the function is on and ENTER is pressed, it will toggle off;

ENTER

on the display show

Note:

interactive; the last function programmed takes

precedence.

The Panel Switch Action Menu (Latch Disable): On the PANEL SWITCH ACTION

3-6A), the panel number of the 848A being displayd or programmed is at the top of the screen. Each of the 24 pushbuttons or station-select-switches on the front panel

is normally both alternate-action and momentary-action.

If held, the pushbutton's action will be momentary, releasing the talk-path when the pushbutton is released.

If pressed with a light tap

talk-path will be latched on until the pushbutton

depressed again to turn off the talk path. It is possible

to make any of these buttons momentary action only. The chart shows the status of each button or station

switch for a particular panel. A latch disabled button is

shown

momentary action only, type "1". To restore a button to both actions, type pushbutton number to be changed (See Figure 3-6B).

will toggle it on. A forced

as

"FO" and an inhibited

as

"IH.

THE

FORCEIINHIBIT

as

"LD". (See Figure 3-6A) To make the button

if

the function is off, pressing

talk

path with show

A TALK PATH WST

MENU

(i.e., less than

"2".

Then enter the two-digit

talk

path will

(See Figure

1

second), the

is

The Panel Instant Speaker Assignment List The PANEL INSTANT SPEAKER ASSIGNMENT

LIST enables a user to turn on the Instant Speaker function for a particular panel. To use this feature, first display the number of the panel you want to program.

to

"IS".

de-program

"1";

"2".

At the

01

or L2)

to

Next, to program this feature choose "1; this feature choose number to be changed. A panel which has Instant

Speaker will appear on the display

The PANEL GROUP ASSIGNMENT LIST assigns switches into groups, and the assignments apply only to communications from the panel being set. First, display the panel number of the panel you want to program. Then, to assign a switch to a group, choose remove a switch from a group, choose prompts, enter the one-digit group number (i.e, 1-4),

then the two-digit switch number (ie.,

involved in the programming.

"2".

Then enter the two-digit panel

as

Page 2-12

TECHNICAL MANUAL

Model 848A

panel Tallv Setw The

PANEL

tally flash time. To shorten the time, choose "1"; to lengthen the time, choose reflect a longer or shorter time until your adjustment completed.

Bvnamic Comlink Sw Displav and Dvnamic Matrix Btus Dimlay

Neither of these status display panels can be programmed in any way other than altering the status of a unit. Both these displays are dynamic; that is, they update without reset to reflect any change in status.

Svstem Configuration Menus

From the System Configuration Root Menu, configurations can be stored or retrieved, or the entire system can be reset to allow a completely new configuration. Using the Store Configuration sub- menu, two configurations (A and B) can be stored, and

the screen supplies a warning message when

be overwritten. From the Retrieve Configuration sub- menu, the two stored configurations can be accessed, and a warning message appears on the screen whenever the current system setup is overwritten.

Reset Svstem Root Menu To reset to System Setup only, press

system setup and the setups of all individual panels, press

"2".

To alter the security code password, press "3".

TALLY

This intermpts all current communications.

SERW shortens or lengthens the

"2".

Matrix

The display will then

Intercom Station 1 Model DC848 Data Concentrator

is

data

will

"1".

To reset the

Make sure that power to the modem is on before the Model DC848 is powered up. If interrupt power to the DC848 and restart.

A Basic Time Model BT2400E modem has been tested with the DC848 system. The DC848 works best with modems with a command set similar to the Model

this

is not the case,

BrnOOE.

2.8.2

Modem

To sign on, set 2400,1200,600 or 300 baud, 8 stop bit, one start bit, no parity. Set the terminal for VTlOO emulate. When using a communications

package, insert the phone number.

This program is intended to run at 2400 baud because the time required to refresh the screen through the modem is 118 the rate of direct (no modem)

communication at 9600 baud. The other baud rates

should

be

phone line is noisy. Whenever possible, use 2400 baud. The Model

one ring. There the screen appears, calling up either the password menu or the main menu, depending upon security.

DC848 initializes the modem every two minutes to

The overcome power transients that may reset the modem and not the DC848.

Operation

bits,

used only

DC848 modem mode is set to answer within

if

2400 baud won't work, or if the

is

normally a two-second delay before

one

2.7

DOWNLOADING SYSTEM SETTINGS

An

entire 848A system may be set up from a computer

which is equipped with

Appendix B for a complete explanation.

2.8

MODEM OPERATION

2.8.1

Modem Installation

certain

~~k~ for modem opemtion. (See Section 2.5.1 and Figure 2-

1).

To connect, use a null modem cable between the DC848

and

the modem. The cable connects at pins 2,3 and

that the

a

floppy disc capability.

CPU

board is correctly jumpred

see

7.

Page 2-13

X,

When exiting the program, use automatically disconnect the modem.

After three-and-a-half minutes of no activity, the

modem will also automatically disconnect. In case of wwer failure. there will be a 5 second delav in iestoration of the program.

2.9

RESETTING AN INDIVIDUAL 848A PANEL

An

individual panel may have by holding in button #l(u~~er-left hand button) while power is shut off and then reapplied to that panel.

the Security Mode, to

its

micro-processor reset

a

TECHNICAL MANUAL

Model 848A

Matrix

Intercom Station 1 Model DC848 Data Concentrator

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM VERSION

848A MAIN MENU

1.

FORCEANHIBIT A TALK PATH

5.

INSTANT SPEAKER ASSIGNMENTS

6.

GROUP LIST ASSIGNMENTS

7.

TALLY FLASH TIME

8. SYSTEM STATUS DISPLAYS

9.

SYSTEM CONFIGURATION

X. EXIT TO SECURITY MENU (DISCONNECTS MODEM)

ENTER SELECTION:

Figure

Main

Menu

2-3

Display

6.0

Page

2-

14

Model

848A

Matrix

TECHNICAL MANUAL

Intercom Station 1 Model

DC848

Data

Concentrator

PANEL NUMBER

04 02 03 04 05

13 14 15 16 17 18

T1

L1

1.

TOGGLE FORCED TALK PATH

2.

TOGGLE INHIBIT TALK PATH

3.

DISPLAY ANOTHER PANEL

4.

DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

ENTER SELECTION:

0-

T2

01

FO

L2

--

06

Forceanhibit A Talk Path:

PANEL NUMBER

13 14 15 16 17 18

01

09 08

19

Figure

Selecting

19

09

10 11 12

20 21 22 23 24

2-4A

a

Function

20 21 22

23

24

TI

2.

3.

4.

5.

ENTER TALK PATH TO CHANGE FORCE STATE

L1

T2

L2

1.

TOGGLE FORCED TALK PATH TOGGLE INHIBIT TALK PATH DISPLAY ANOTHER PANEL DISPLAY NEXT PANEL RETURN TO MAlN MENU

Figure

Forceanhibit A Talk Path:

Selecting

(01-L2):

A

Page

2-4B

Talk Path

2-

15

TECHNICAL MANUAL

Model

M8A

Matrix

Intercom Station /Model DC848

RTS SYSTEMS INC. 848A PANEL SWITCH ACTION MENU (LATCH DISABLE) PANEL NUMBER 01 01 02 03

..

--

04

--

05

--

06

07 08 09 10 11 12

LD

--

Data

--

Concentrator

--

13 14 15 16 17 18 19 20 21 22 23 24

--

TI L1 T2

--

-- --

I.

SET LATCH DISABLE MOMENTARY ONLY)

2. CANCEL LATCH DISA LE MOMENTARY ONLY)

3. DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5. RETURN TO MAlN MENU ENTER SELECTION:

PANEL NUMBER 01 01 02 03

13 14 15 16 17 18 19 20 21 22 23 24

TI Ll T2

1. SET LATCH DISABLE (MOMENTARY ACTION

2.

CANCEL LATCH DISABLE (MOMENTARY Ac+IoN)

3. DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5. RETURN TO MAlN MENU SET LATCH DISABLE (MOMENTARY ONLY) FOR SWITCH NUMBER (01-L2):

--

L2

--

B

Figure 2-5A

Panel Switch Action Menu (Latch Disable):

Selecting a Function

04

05

06

--

L2

07 08 09 10 11 12

LD

--

Figure 2-5B

Panel Switch Action Menu:

Selecting a Switch Button

Page

2-16

Model

848A

Matrix

TECHNICAL MANUAL

Intercom Station /Model

DC848

Data Concentrator

RTS SYSTEMS INC. PANEL NUMBER

13 14 15 16 17 18

1.

SET HANDS-FREE ANSWER

2.

CANCEL HANDS-FREE ANSWER

3.

DISPLAY ANOTHER PANEL

4.

DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

ENTER SELECTION:

01

848A

HANDS-FREE ANSWER LIST (AUTO RECIPROCAL)

Hands-Free Answer (Auto-Reciprocal) Function Menu:

PANEL NUMBER

01 02 03 04 05

01

06

-0

19

20 21 22 23 24

Figure 2-6A

Selecting a Function

07

08

HF

09

0-

10 11 12

13 14 15 16 17 18 19 20 21 22 23 24

SET HANDS-FREE ANSWER

1.

2.

CANCEL HANDS-FREE ANSWER

3.

DISPLAY ANOTHER PANEL

4.

DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

SET HANDS-FREE ANSWER FOR SWITCH NUMBER

(01-24):

Figure 2-6B

Set Hands-Free Answer (Auto-Reciprocal)

Menu:

Selecting a Panel Number

2-17

Page

TECHNICAL MANUAL

Model

848A

Matrix

RTS SYSTEMS INC. 848A INSTANT MIC ASSIGNMENT LIST PANEL NUMBER 01

1. SET INSTANT MIC ON FOR A SWITCH

2. CANCEL INSTANT MIC ON FOR A SWITCH

3.

DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

Intercom Station

/

Model

DC848

Data

Concentrator

ENTER SELECTION:

Figure 2-7A

Instant Mic On: Choosing

RTS SYSTEMS INC. 848A INSTANT MIC ASSIGNMENT LIST PANEL NUMBER 01

1. SET INSTANT MIC ON FOR A SWITCH

2. CANCEL INSTANT MIC ON FOR A SWITCH

3.

DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

SET INSTANT MIC FOR SWITCH NUMBER (01-L2):

Figure

2-7B

Instant Mic On: Selecting a Switch

a

Function

I

w

I

Page

2-18

Model

PANEL NUMBER 01

848A

TECHNICAL MANUAL

Malfix

Intercom Station / Model

DC848

Data

Concentrator

01 02 03

13

14

TI L1 T2

1. SET INSTANT SPEAKER ON FOR A SWITCH

2. CANCEL INSTANT SPEAKER ON FOR A SWITCH

3. DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

ENTER SELECTION:

01 02

13 14

04

05

06

07 08

--

1s

--

15

16

19

18 19

42

03

04

05

06

07 08 09 10 11 12

--

1s

--

15

16 17 18 19 20 21 22 23 24

09

10

20

21 22 23 24

11 12

T1 L1 T2

1.

SET INSTANT SPEAKER ON FOR A SWITCH

2. CANCEL INSTANT SPEAKER ON FOR A SWITCH

3. DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

SET INSTANT SPEAKER ON FOR SWITCH NUMBER

L2

Figure

Instant Speaker On: Selecting a Switch

Page

(01

42):

2-8B

2-19

TECHNICAL MANUAL

Model

848A

Matrix

RTS SYSTEMS INC. 848A PANEL GROUP ASSIGNMENT LlST PANEL NUMBER 01

1. ASSIGN SWITCH TO A GROUP

2.

REMOVE SWITCH FROM GROUP ASSIGNMENT

3.

DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

Intercom Station / Model

DC848 Data Concentrator

ENTER SELECTION:

Figure 2-9A

Panel Group Assignment: Selecting

RTS SYSTEMS INC. 848A PANEL GROUP ASSIGNMENT LlST PANEL NUMBER 01

I.

ASSIGN SWITCH TO A GROUP

2.

REMOVE SWITCH FROM GROUP ASSIGNMENT

3.

DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

ASSIGN SWITCH TO GROUP, ENTER GROUP NUMBER (1-4): 1 ENTER SWITCH NUMBER (01-L2):

Figure 2-9B

Panel Group Assignment: Assigning A Group

a

Function

I

Page

2-20

TECHNICAL

Model

848A

Matrix

Intercom Station /Model DC848 Data Concentrator

RTS SYSTEMS INC. 848A PANEL TALLY SETUP

PANEL NUMBER 01

MANUAL

AUTO TALLY FLASH TIME

1.

LENGTHEN TALLY FLASH TlME (MAX 60 SECONDS)

2.

SHORTEN TALLY FLASH TlME (MIN

3.

DISPLAY ANOTHER PANEL

4.

DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

[

L 1 Tally Flash Time Longer (Max. 60

[ S ]

Tally Flash Time Shorter (Min.

......................

Sec.)

10

Sec.)

10 SECONDS

10

SECONDS)

Figure

2-10

Panel Tally Setup

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM

848A DYNAMIC DISPLAY ROOT MENU

1.

DISPLAY DYNAMIC COMLINK STATUS

2.

DISPLAY DYNAMIC MATRIX STATUS

5.

RETURN TO MAlN MENU

ENTER SELECTION:

Dynamic Display Root Menu

Figure

Page

2-11

2-21

Model

848A

Matrix

TECHNICAL

MANUAL

Intercom Station /Model

DC848

Data Concentrator

RTS SYSTEMS INC. OK = Panel is communicating with system

--

E

Panel is not communicatln with system

XX

=

Commun~cahon collis~n

[Return] TO

RTS SYSTEMS INC.

P#

09: 01 02 03

MAIN

,,

,, ,, ,,

--

,,

--

-- --

--

,,

--

-,

--

,,

-- --

--

om

--

..-

--

-,

.-

--

848A

MENU

868A

DYNAMIC MATRIX STATUS DISPLAY

**

,- ,,

**

,, ,, ,, ,,

-, ,, ,,

--

-..

,, ,, ,-

-,

04

,, ,,

--

,, -, ,,

--

**

,,

05

-- --

--

,,

,-

,,

--

,-

-- -- --

--

,.

--

-*

--

..

--

-.

.-

-- --

DYNAMIC COMLINK STATUS DISPLAY

72

or more panels at same address)

,,

**

-..

--

06

.,

--

.,

--

..,

.-

--

-..

..-

--

Dynamic

..,

,, ,, ,, ,,

--

,,

..,

,,

**

-, ,,

,-

**

,, -,

-- --

,,

--

,, ,, ,- ,,

-, ,,

--

,,

--

-,

--

,,

08

--

-,

..,

,,

--

-..

--

**

,,

--

,, ,, ,, ,,

,,

-,

,,

--

,,

--

Figure

Comlink

,, ,, ,, ,,

-,

--

**

10

--

-,

,,

-,

--

,-

--

r-

--

2-12A

Status Display

,,

--

,,

,-

,,

,, ,,

,,

,..

,,

--

,,

--

**

--

,,

**

,,

**

,,

--

,,

--

,,

--

,,

-,

,,

,.

-,

--

,,

--

-,

,,

..,

-. -.

-,

--

,,

,- -, ,, -,

-.

--

,,

,, ,, ,,

--

14

,,

**

,, ,, ,, ,, ,, ,,

-, ,,

-,

,, -, ,,

--

,,

--

,,

,-

,, ,- ,,

--

-..

--

-- --

,-

,, ,,

,,

--

,,

**

,,

--

**

,-

--

-,

-, ,,

--

,,

-- --

--

,, ,, ,-

,,

,, ,-

--

18

,-

--

,, -,

,,

--

-,

,-

,,

,-

--

**

,,

,-

**

,-

,,

--

,-

,,

,- -,

,,

,, ,-

--

I

-.

,,

-,

,,

-,

-..

,,

--

-, ,, ,- ,, ,-

--

**

-,

,- -,

-*

--

,,

,..

--

,,

--

,,

,-

,- ,,

-- --

,,

,- -,

--

-..

,-

,,

--

,-

,, ,-

--

,,

-,

,,

,, ,, ,, ,,

..-

**

,,

**

--

,,

--

,-

--

,,

--

,,

,-

--

,,

--

,-

,, ,,

--

..-

-,

--

,-

--

-,

..-

,-

-,

--

,,

--

,,

--

,, ,, ,- ,-

,, ,, ,, ,-

,, ,- ,,

--

**

,- ,-

--

**

--

I

,- ,-

,-

,..

,,

,- ,-

--

,,

,.

,-

,,

,-

**

Rgure

2-12B

Dynamic Matrix Status Display

Page

2-22

TECHNICAL MANUAL

Model

848A

Matrix

Intercom Station

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM

848A SYSTEM CONFIGURATION ROOT MENU

1.

STORE CURRENT CONFIGURATION

2.

RETRIEVE A CONFIGURATION

3.

RESET AND INITIALIZATION

5.

RETURN TO MAlN MENU

ENTER SELECTION:

/

Model

D6848

Data

Concentrator

Figure

2-I3

System Configuration Root Menu

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM

STORE CONFIGURATION SUB MENU

1.

STORE CURRENT SETUP TO CONFIGURATION A

2.

STORE CURRENT SETUP TO CONFIGURATION

5.

RETURN TO MAlN MENU

STORE CURRENT SETUP TO CONFIGURATION

***+******C***

SETUP PREVIOUSLY STORED TO CONFIGURATION

WARNING****************"

Figure

2-14A

Store Configuration Sub Menu and selection

f

B

[

A

]

[

A]

WILL

BE

OVERWRITTEN

Page

2-23

TECHNICAL MANUAL

Model

848A

Matrix

Intercom Station / Model

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM

RETRIEVE CONFIGURATION SUB MENU

1.

RETRIEVE SETUP FROM CONFIGURATION A

2.

RETRIEVE SETUP FROM CONFIGURATION

3.

4.

5.

RETURN TO MAIN MENU

DC848

Data

Concentrator

1

B

]

ENTER SELECTION:

RETRIEVE SETUP FROM CONFIGURATION [ A]

*************

CURRENT SYSTEM SETUP WILL BE OVERWRITTEN DO YOU WISH TO CONTINUE?:

ANY OTHER RETURNS TO ROO MENU

WARNING***************

1

Figure

FOR YES]

'7

2-14B

Retrieve Configuration Sub Menu and selection

?{;.

,

,*.

.?.A'

Page

2-24

TECHNICAL. MANUAL

Matrix

Model 848A

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM

RESET SYSTEM ROOT MENU

1. RESET SYSTEM SETUP ONLY

2.

RESET SYSTEM SETUP AND ALL PANELS

3.

CHANGE CURRENT SECURITY PASSWORD

5.

RETURN TO MAIN MENU

ENTER SELECTI0N:l

RESET SYSTEM ONLY

Intercom Station /Model DC848 Data Concentrator

THIS COMMAND WILL CLEAR AU PROGRAMMED PARAMETERS

DO YOU WISH TO CONTINUE?:

ANY OTHER RETURNS TO ROOT MENU

Rgure

[Y

FOR YES]

2-15A

Reset System Root Menu and Selection

RTS SYSTEMS INC. 848A SYSTEM TERMINAL CONTROL PROGRAM

CHANGE OR DISABLE PASSWORD SECURITY

[

RETURN ] TO ACCEPT 5 TO 8 CHARACTERS

0

[

RETURN ] DISABLES PASSWORD SECURITY SYSTEM

[

ESC ] TO START NEW ENTRY

ENTER PASSWORD:

Figure

2-193

The Password Security Menu

FOR

ALL PANELS

Page

2-25

Model

848

A

mix

TECHNICAL MANUAL

Intercom Station /Model

DC848

Data Concentrator

Figure

Model 848A Front Panel

3-1

Page 2-26

Model

TECHNICAL

$488

Matrix Intercom Station / Model

MANUAL

DCS48

Data Concentrator

SECTION

3.1

Operating Controls

Table

S:

OPERATION

3-1

below lists the Model

(See Figure

the circled numbers in Figure

Ref.

h

1

2

3

4

5

_Name

Adjustment Panel

Panel Microphone

Loudspeaker

Station Select

Pushbutton

(Matrix

lW

Channel Select

Intercom)

Intercom

3-

1)

$488

operating controk. The reference numbers in Table 3-1 correspond to

3-

1.

Table

3-1

Descri~tion

.

Opening

this

panel allows the user access to: Operator adjustments for level controls for the listen functions; technician adjustments for conference channels Speaker

Dm.

The panel microphone

1

and

2

balance, Sidetone, Microphone

is

a sardioid electret microphone mounted on a

inch flexible gooseneck.

This

internal loudspeaker

is

disabled when an external loudspeaker

plugged into the rear panel speaker jack. To talk directly to other stations, any one or any combimation of

buttons may with dual level illumination:

The two

be

selected.

TW

Intercom conference-line channels allow conferences

All

pushbuttons are

dm

for stand-by and bright for operate.

momentary/latching-action

groups on the same channel. To listen to a channel, press the listen button for that channel; to talk, press the talk button. It trix intercom

and

the conference intercom at the same time.

is

possible to use the ma-

Gain

24

and

20-

is

push-

with

6

7

8

9

10

11

12

ALLTALK

PANEL

SPKR ON MIC ON

VOLUME CONTROL

CARBON MICRO-

PHONE HEADSET DYNAMIC MICRO-

PHONE HEADSET

MIC

This momentary pushbutton addresses all of the stations at the same time. Its operation works on an independent all talk bus.

is

independent of any existing talk circuit set-ups since it

This

button also does not access the

conference-line circuits. This latching action pushbutton selects between the panel microphone and

the headset microphone. (panel &=bright, headset mic=dim) Sets the loudspeaker at on or off. Allows the microphone to be turned on or

MIC

selection. The

ON switch, when enabled, automatically dims the

speaker to prevent feedback. It may also

off

without distwbiig auy station

be

remote controlled.

The VOLUME CONTROL adjusts the listen sound level of the speaker

is

and the headset. The VOLUME CONTROL range

may always be heard through headset or speaker (when the speaker the headset

This jack

This

is

worn).

is

used with carbon microphone or equivalent headsets.

connector

is

for dynamic microphone headsets.

limited so that a call

is

on or

Page

3-

1

Model

TECHNICAL

848A

Matrix Intercom Station

MANUAL

/

Model

DC848 Data Concentrator

Figure

Adjustment

Page

3-2

Panel

Model

TECHNICAL

8484

Matrix Intercom Station/Model

MANUAL

DC848

Data Concentrator

3.2 Operation

.l

(Point-to-Point) Operation

3.2

Originating a

Call

To communicate directly with another station or stations:

1) Select panel microphone operation by pressing the PANEL MIC button (brightly lit). For headset microphone operation, the PANEL MIC button

is

dimly lit.

2) Select loudspeaker operation by pushing the SPKR ON button (brightly lit). For headset or headphone (only) operation the SPKR ON button

is

dimly lit.

3) Push the button corresponding to the station to be called. <Note: the station select buttons are both alternate-action and momentary-action but-

is

tons; If the pushbutton tion will be momentary and the talk-path released when the pushbutton pushbutton than

ti1

the pushbutton

is

tapped lightly (depressed for less

1

second), the talk-path

is

crosspoint. Any number of stations at the same time.

>

pushed and held, the ac-

will be

is

released. If the

will

be latched on

m-

depressed again to turn off the

can

be selected

Push the MIC ON button, then speak into the microphone.

An alternate operating mode is to use a single head- phone to listen and the panel microphone to talk

Answering a Call System with Model DC848: When another station is calling, the button corre-

sponding to that station

will flash. To answer, push

the green CALL ANSWER button or the flashing button, turn the microphone ON, and talk. When

the conversation

ANSWER button. If another station

can

be answered at this time, by pressing the CALL

is

completed, release the CALL

is

calling it ANSWER button again. System without Model DC848:

is

When another station

calling,

heard, but no light indication

the voice

will be seen.To an-

will

be

swer, push the button corresponding to the caller's station, turn the microphone ON, and talk. Callers should identify themselves. If they don't, the ALL call

will have to be used to determine the caller's

station. When the conversation

is

completed, release the button corresponding to the caller's station and

3.23 Conference Line Operation

turn

off the microphone.

In conference line operation, both the TALK and LISTEN buttons must be used for two-way

com- munication. To monitor the conference line, only the LISTEN button

can

be used at the same time as the station lines.

33

Adjustments

is

selected. Conference lines

(See Figure 3-2)

Operator and technician adjustment pots are on the Adjustment Panel, which is a small

rectangulae panel just to the left of the front panel loudspeaker. The panel

is

released by pressing on the panel to

unlock it, then pulling it forward. O~erator Adiustments On the inside of the panel, there are two rows of

trimmer potentiometers. The top row contains listen adjustments for the following:

TW1 Conference Line

1

TW2 Conference Line 2

ALL TALK page

MATRIX

PGM To adjust the levels

24

point-to-point stations

Auxiliary program

turn

the pot with your fingers or a small screwdriver. Turning to the right in- creases the level.

The bottom row contains five additional adjust- ments--three are screwdriver-adjustable and two are finger-adjustable.

The sidetone pot is finger-adjustable and is' used to adjust the level of the speaker's voice in his own

will

headphone. Turning this pot to the right

in-

crease the volume.

dim

level

is

The loudspeaker and

will set the amount of speaker attenuation

when the MIC ON pushbutton

also finger-adjustable

is

pressed. Technician Adiustments The following are screwdriver-adjustable trimmer

potentiometers (explained in Section

5):

TW 1 BAL Conference Line 1 balance TW 2 BAL Conference Line

2

balance

MIC Microphone gain adjustment

Page 3-3

E

0

24

STATION

2

STATION

1

STATION

z

0

a

;y

E5

Et

0

if

Model 848A

Matrix

TECHNICAL

Intercom Station / Model DC848 Data Concentrator

MANUAL

SECTION

4.1 INTRODUCTION

The Model 8488 is an intercommunications master station. Each 848A is a station in a point-to-point intercom system which can have as few as 2 stations or as many as station system. Any configuration of multiple stations in this system is called a matrix. In the matrix, up to

12

conversations may either separately or in groups. Each 848A station has two built-in conference-line intercom channels that

be

can

TW

ALL system.

4.1.1 System Concept

(See Figure 1-1, System Block Diagram) The Model 848A is

with intercom channels. duplex mode, all communication paths to each station. This concept eliminates the need for central matrix switching electronics select switching is done directly at each station.

4:

THEORY OF OPERATION

24

stations

used separately or as part of an RTS Systems

Intercom System. Each station also contains an

TALK button for paging throughout the entire

24

station channels and 2 conference-line

--

forming a full

be

in progress at any time,

an

audio communication station

Operating in a

24

Cwire, full-

are

distributed

--

all station-

by

24

When the Model DC848 Data Concentrator is used in conjunction with the Model 84844, feature is added. With this feature, the calling station's bntton will flash and visually which station is calling.

Each Model 848A station within the system has two

TW

Intercom conference-line channels, which allow

a

connection to our standard RTS Systems Intercom lines. These conference-line channels may also be used within an 848A system without external connections. Conference-Line Channels 1 individual front panel TALK and LISTEN switches

In

for each channel. conversations or just monitor them. The conference- line channels can be used at the same time as the point-to-point channels.

Each Model 848A station is connected to other 848A stations with 25 connected from assemblies.

43 FUNCTIONAL DESCRIPTION

The functional elements in the Model 848A Matrix Intercom

the

are:

this way, a user can join

'

pair

cables. These cables

individual 848A units to splitter

a

call light tally

an

operator can tell

&

2

TW

have

are

Each

talk

path is dedicated to a send/receive bus. In

a typical operating example, a user chooses the

talk

station he wishes to pushbutton. The selected station will automatically hear the calling station. No other station will hear this message unless they receive address or more than selected by the sender.

The receiving station answers the calling station by simply pressing the call answer pushbutton, which marked with the station's own number and has a colored insert. When the communication is completed, each station releases and the connection is

broken.

The

ALL

TALK button allows any station to

all other stations simultaneously.

to by pushing that station's

are

assigned the same

-

one station has been

is

talk

to

Page 4- 1

1) The MICROPHONE Electronics

2)

The TALK Electronics

3)

The LISTEN Electronics

4) The

5) The

6)

TW

Electronics

CPU

Electronics

The Power Supply

TECHNICAL

Model 848A

43.1

Microphone Electronics

The Model 848A microphone electronics consist of: a microphone select switch (U102). a microphone preamplifier and limiter (UlOl), and an electronic microphone switch (102).

The microphone select switch (U102) selects input from either the panel microphone or the headset microphone and sends the signal to the microphone preamplifier and limiter (U101). This preamplifierflimiter combination amplifies and conditions the microphone signal to the (4 volts peak-to-peak) signal

The signal then feeds microphone switch 2 (U102). Microphone switch 1

is the on/off switch to the Microphone switch 2 is the on/off switch to the electronics. (For operation see Section 3.2.2.)

The microphone signal also goes to a rear panel auxiliary connector at 5104 (pins 4 and 5) through transformer TlOl for

preamplifier output at a level of -10 dBu nominal.

4.2.2

Talk

Electronics

The Model 848A TALK electronics consist oE a buffer amplifier (UlOl), a line driver amplifier

(U103), and electronic

Electronic microphone switch 1 passes the signal to buffer amplifier UlOl which provides a gain of 2.4 to the line driver. The line driver (U103) balances the signal and provides a low output impedance to the

talk

select bus. This passes to electronic switches U301 to U316 which bus-select switches. The balanced signal then feeds

through 1% resistors to the listen-select matrix board which puts the signal through another pair of 1% resistors before passing the signal to the 50-pin bus connector. Each of the approximately 12k ohms bridging impedance to the balanced

4.2.3

The Model 848A LISTEN electronics consist of: the

summing amplifier

talk

bus.

Listen Electronics

to

microphone switch 1 or

an

talk

switches (U301 to U316).

are

controlled by the front panel

(U202), the headphone and

Matrix

required.

Intercom Station / Model DC848 Data Concentrator

2

volts

peak

talk

electronics.

TW

unswitched ' microphone

24

outputs present

talk

MANUAL

speaker amplifiers (U205), and level adjustments (R508--R5 10).

Through the placement of jumpers, one of the 24

an

buses on the matrix board is chosen as

each unit. (See Section 2.3.2) This listen signal then

passes through transformer T201 (a lOkilohm to

lOkilohm center tap transformer) to provide optimum common mode interference rejection and isolation.

The signal then passes through the matrix listen level

control (R509) located on the adjustment board.

Resistor 509 is a 20 kilohm audio potentiometer. From here the signal is fed to the listen summing

amplifier Other signals are also fed to the listen summing

amplifier: A program signal from rear panel connector amplifier through transformer T202 (a 10 kilohm

10 kilohm center tap transformer); The listen audio of

all

transformer T203 (a 600:600 ohm transformer); The sidetone signal is fed into the summing amplifier only when the loudspeaker is turned off and the headset is used.

The output from the summing amplifier is passed

through the master volume control (R401) located on the front panel. R401 is a lOkilohm audio

potentiometer. The signal is then distributed to the

headphone and loudspeaker amplifiers, U204 and

U205. The output from headphone amplifier (U204) is

designed to drive headphones of 8 ohms or greater impedance.

The signal to the loudspeaker amplifier runs through electronic speaker switch U203 and speaker switch U203. The speaker dim Mic switch is on. The loudspeaker is automatically dimmed to the level preset by the operator at adjustment R504. Resistor R504 is a 20 kilohm

potentiometer. This adjustment

adjustment card.

(U202).

J104 (pins 2 and 3) is fed into theAsumming

TW

channels 1 and 2 is fed into the amplifier; The

talk

listen audio is fed into the amplifier through

is

activated when the

address for

is

found on the

to

dim

Page 4-2

TECHNICAL MANUAL

Model 848A

The signal for the loudspeaker then passes to buffer amplifier U202 and then on to the speaker amplifier U205. This amplifier provides a maximum of 2 watts

to 8 ohm and higher impedance speakers.

43.4

TW

Intercom Conference Line Electronics

Matrix

Intercom Station / Model DCM8 Data Concentrator

Inputs:

a. 848A Kevboard Switches The CPU reads the switches of the 848A keyboard

using parallel to serial converters (input shift registers U9 through U13)

The Model 848A current sources (U604 and U605), channel 1 microphone switch (U601), channel 2 microphone switch (U602), balance adjustments (R501 and R502), and listen level adjustments (R506 and R507).

The microphone signal feeds the microphone onloff switch U601 and then feeds channel

and

U601

are

sent to the bilateral current sources which apply the signal to the line through the conference line connectors on the rear panel.

Incoming signals from the conference line are

receivedby ;he bilateral current sources and sent

through electronic switches to the balance controls on the adjustment card-R501 and R502 (10 kilohm linear potentiometers). The signal

the summing amplifier of the listen circuit through the listen level adjustments R506 and R507 The CPU controls the gates using serial to parallel (20 kilohm audio potentiometers) located on the adjustment board.

4.2.5

channel 2

buffered by amplifiers U604 and U605, and then

CPU

TW

electronics consist of bilateral

talk

Electronics

1

talk

switch

switch U602. The signals

is

then routed

to

D~D Switches

b. The CPU reads the dip switches

logical address of that 848A.

c. Model DC848 The CPU communicates with the DC848 using a

@art

built in and an external RS422 interface.

Outputs:

a. Lamps The CPU controls the lamps using serial

converters (output shift registers U14 through

b.

Audio Switches (Gates1

converters (output shift registers U14 through U2 1). c. Model DC848

of the microcontroller) serial interface

to

establish the

to

parallel U21).

The Model 848A Central Processing Unit (CPU) accepts inputs from switches and from the DC848A Data Concentrator and outputs information

audio switches and the ~odel DC848A. The CPU electronics include a 63A03R

Microprocessor (U2), a 74HC573 latch (U4), a 27C256 EPROM with 32K Bytes (U6), and a 6264 Static

RAM

with 8K Bytes (U8)

to

lamps,

Page 4-3

The CPU communicates with the DC848 using a built in and an external RS422 interface.

43.5.1

Electronics:

The processor sends an enable pulse (*EN) to the input shift registers via causes the parallel data input of the shift registers to be latched (switch data) and ready The microprocessor also sets up serial crosspoint data

(audio gate control) on Port 1, Bit 4 and lamp data

(LmpD) on Port

(part

of the microcontroller) serial interface

Detailed Theory Of Operation

Port

1, Bit

1.

to

shift serially.

1,

Bit 3.

It

then sends a pulse on the

848A

CPU

This pulse

TECHNICAL

Model 848A

clock line (CLK) at Port

1,

Matrix

Intercom Station /Model DC848 Data Concentrator

Bit 0, to clock

all

shift registers. Serial switch information is sent to the processor at each clock interval on Port 1, Bit 7 (SwD). This is done 40 times (40 clock pulses) to read all of the switches, and to output all of the lamp and gate controls. The processor then sends a pulse

on the strobe line (STR) at Port 1, Bit 2 to allow all of the output shift registers to send their parallel data into the open collector outputs of the CPU. This

occurs internally within the

UCN5820,shift register.

The strobe pulse also controls the watchdog circuit U3. If the processor stops running, then the strobe pulse will not be present. A time duration is set up

by R12 and C6. If there is no pulse for that duration, then its absence causes U3 (astable multi-vibrator) to toggle, which

turns on Q1, triggering a hardware

reset to the microprocessor.

MANUAL

43

DC

848

Data Concentrator

43.0

General Information

The DC848 has two major functions:

Function number one is to transmit "tally" or calling

party identification signals (blinking or lamps) from station to station. This is accomplished using

RS485 data party line. Function number two is to allow user control of the

system via a data terminal or computer. User control of the system is: observing the state of the system,

to

adding and removing special features stations, saving and restoring features to the system, resetting the entire system, and some housekeeping functions. This is

accomplished using an RS232

terminal connection.

848A

an

The microprocessor has an internal serial communications interface (SCI) at Port 2 for asynchronous serial communications to the Data

Concentrator

(DC848). Transmit and Receive Data (TxD and RxD) is buffered by U23. U22 is not normally installed. W1 jumper allows U23 to be used in half duplex mode (RS485). The driver (75176) is controlled by the processor (Tx CTL). The signal is +5 volts to transmit, 0 volts to receive.

The 84814 system uses the RS485 half duplex serial communication network, 78.6K baud, 8 bits, bit and 1 stop bit. The CPU

has

its own voltage

1

start

regulator which gets its power from the +18 volts unregulated

supply fmm the mother

board.

DC

Voltage regulator U7 LM317 is set by R15 and R16 to +5 volts. Diode D2 supplies protection for capacitive loads on the output of the regulator.

43.6

Power Supply Electronics

The power supply electronics contain a full-wave bridge rectifier to convert the 12 volts AC into

DC.

15 volts unregulated raw

U701 (LM3 1713 supplies 12 volts regulated

Voltage regulator

DC

power and voltage regulator U702 (LM3 17LZ)

supplies 6 volts regulated DC power.

a

Both functions are implemented by

combination of hardware and software. The software. has been reduced to machine code and stored

in

Erasable Programmable Read Only Memory (EPROM). User selected features are stored as data tables in Random Access Memory

(RAM).

The Random Access Memory is made nonvolatile (the data remains even when the power

is

turned

on and off) by using Dallas Semiconductor "Smart Socket" which has a ten year, built-in lithium battery.

The hardware consists of a microcontroller, EPROM,

(ID)

RAM, two sets of Input/Output

circuitry, and housekeeping circuitry. The microcontroller is an eight bit (byte) device which runs at a clock frequency of 4.9152 megahertz. The EPROM stores 32 Kbytes of information (32 Kbytes=32,768 bytes); the RAM stores 8 Kbytes of information (8196 bytes).

One Input/Output is a RS485 port (serial, half duplex). This port

has

three

wires: a common,

transmit, and a receive. The software is designed so

that only one 848A connects itself to the transmit and

(half

receive wires (buses) at a time

duplex). The Model DC848 transmits a coded signal (protocol) to arbitrate which station connects to the transmit and receive buses and what is to be transmitted. The

a

Page 4-4

L-

J

Model 848A

Mafrix

TECHNICAL MANUAL

Intercom Station / Model DC848 Data Concentrator

RS485 generation capability is part of microcontroller, US, and the transmissionfreceiving interfacing capability is accomplished by U2, an

RS422 driver (RS485 is RS422 protocol but half

duplex).

an

A second duplex). This port uses three of the RS232 wires:

transmit, receive, and common. This port allows a data terminal (VT100 protocol), or a computer (with a VTlOO protocol communication program and serial RS232 port) to communicate with the DC848. data terminal or computer may DC848 with an appropriate cable, or, in the case of the computer, via a user-supplied modem and a telephone line.

43.1 DC848 Hardware

The Model DC848 Data Concentrator is comprised of a UMC-100 PCB assembly which includes a Hitachi 63A03R micro-controller. U9 serves as a memory block decoder. RQM is located at 8000H to

Input/Output is

RS232 port (serial, full

The

be

connected to the

FFFFH.

RAM is located at 6000H to 7FFFH. The RAM socket is a Dallas Semiconductor Smart Socket with internal battery backup. During a power failure, the socket retains RAM data. Upon power reset, as part of the software initialization a serial number of 05A5H is tested for in RAM. If the test succeeds, then the data in the RAM has

been retained. If the test fails, the processor reinitializes all RAM locations and sets 05A5H to the

serial number RAM location.

The UMClOO has an on-board watchdog comprised of U7, an astable multivibrator, and Q1. The output of decoder U12 (3400 pin 10 is used re-trigger the watchdog. A time duration is set by R33 and C11, creating a re-triggerable astable

multivibrator with U7. If there is no pulse for this set time duration, U7 toggles, which turns on Q1,

causing a hardware reset to the microprocessor.

Serial communication for the DC848 is accomplished

with the embedded SCI (Serial Communications Interface) in U5. U2

RS422 driver is used in half-

to

duplex mode with W1 installed. The transmitterheceiver control is accomplished with Port

2,

bit 0 (l=transmit, ()=receive). U1 is not normally

installed. Serial Data to the terminal is sent via ACIA

(Asynchronous Communications Interface Adapter) U14, a 63A50 from Hitachi. The transmit and receive clock is derived from E clock through divider U17 for baud rate control. The divider is programmed through the U15 output port.

The ACIA is coupled through opto-isolators U21, U22, U23 and U24. to DC converter is used to generate isolated for U19. This allows total ground isolation from the 848A system ground and any earth ground that could come from a terminal. The most recent models of the DC848 do not have this ground isolation.

The ACIA is serviced in software on an interrupt basis

-

for both receive and transmit functions.

46.2

DC848 Software

The DC848 software is in fact firmware: software that has been compiled to machine code and stored in

EPROM (Erasable Programmable Read Only

Memory). The terminal drivers are interrupt driven.

The DC848 arbitrates the party-line 485 bus that

interconnects all panels and the DC848.

Each panel is polled using its panel address. The DC848 sends (through 485 driver U2) and F7H

(break character) and a panel address (1 to 23). This

is followed by programming or tally information that must go to that panel

An

EOM character here defined as OF4H is sent prompting the selected panel to respond with switch data.

If

no switch activity is sensed from the panel, it responds with EOM of F4H. sensed, the panel sends switch information to the DC848 (for tally and display updates), and an EOM of F4 to indicate End Of Message. The BC848 then

to

an RS232 driver U19

as

calculated by the DC848.

If switch activity is

-1-5

DC

volts

Page 4-5

TECHNICAL

Model 848A Matrix Intercom Station /Model DC848 Data Concentrator

continues panel polling with the next consecutive

panel.

The embedded SCI (panel Serial Communications Interface) is intermpt driven for receive data only.

to

The transmit side. This baud rate

The ACIA is also serviced on the intermpt side, thus making a maximum of two levels of intempt.

panel occurs on the non-intempt

is

78.6K, 8 bits, no parity.

MANUAL

Modem mode

6

to a logical 0 and reads bit 5 to determine if the

bit jumper is installed between pins 7 and 8 on J1 or, on recent models, to determine

are

on.. Modem mode uses three basic timers: one timer to send modem initialization every two minutes, one timer to sense maximum time between 2-digit modem responses (if modem sends one character only, the DC848 initialization

for delaying output of menu to modem after establishing modem connection. All three timers software 2-byte timers, and each is serviced in its respective command level.

There are software created; one level for each menu and sub- menu. through, it changes the operating system command level.

Software Version 6.0 occupies approximately kilobytes for its task-driven operation system. The software is comprised of assembled and then linked to ROMable code.

is

sensed from Port 1, bit

if

switches 6 and 7 of S1

will

after

300

milliseconds.), and one timer

49

command levels that the DC848

As

the menus are selected and stepped

34

separate modules, each

5.

send modem

U5

sets

are

9.5

Page 4-6

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station / Model DC848 Data Concentrator

SECTION PROCEDURE and TROUBLESHOOTING

5.1

5:

MAINTENANCE, TEST

INTRODUCTION

This section provides service information for normal maintenance, factory performance tests and trouble- shooting information. The normal maintenance begins at Section begin at Section begins at Section

52

SERVICE INFORMATION

The Model from the purdase date.

5.3.

The factory performance tests

5.4.

The troubleshooting information

5.6.

848A

is warranted for a period of one year

A

copy of the warranty

is

located at the front of this manual.

53

GENERAL MAINTENANCE

These servicing instructions are for qualified personnel only. To avoid electric shock, do not

perform any servicing other than that contained in the operating instructions unless qualified to do so.

Any intemption of the protective grounding

conductor (inside or outside the equipment)

or disconnection of the protective earth is

likely to make the equipment dangerous.

Intentional interruption of the protective

grounding conductor is strictly prohibited.

It

is

possible for capacitors inside the equipment to

still charged

even

if

the equipment has been

disconnected from its power source.

The

service information presented in this

manual is normally used with the protective

covers removed and power applied to the

equipment. Energy available at many points

may, if contacted, result in personal injury.

Disconnect power before servicing.

53.1

Safety Considerations

'leen

equipment has

desiped

in

accordance with international safety standards, this manual contains information. cautions. and warnings

which must be followed to ensure safi operation akd

to maintain the eaui~ment in safe o~erating condition. Service 86d adjustments shdd bi

performed only by qualified service personnel.

adjustment, and

'pened equipment

while

any power

Or

the

is applied should be avoided as much as possible, and, when inevitable, should be carried out only by a skilled person who is aware of the hazard involved.

532

Cleaning

Clean the outside of the MODEL848A with

denatured alcohol or a mild solution of detergent and water. CIean the interior with The circllit boards

1,1,1

trichloroethane or Freon TF.

or

any

5A

To

solvents

Access

get

hide the

to

get

into the

-,

can

drv.

low Dressure

&

clianed with

Do not allow these

remove

the

screws on

air.

the top cover. Slide the cover off.

&

component After the top cover has

been removed, disconnect the connectors from the back panel

5403,

mother

Now

board

programming sectioo,

discoMect

at

J2m,1

Jml

the

and

connectors

J701.

J402

and

from

the

The back panel

at

the

is attached to the chassis with eight screws: one at

each of the four corners of the panel, two on the top

edge securing the top cover, and two on the bottom

edge securing the bottom cover. Remove the screws

and carefully pull the back panel away from the

chassis.

Page

5-1

TECHNICAL MANUAL

Model 848A Matrix Intercom Station

/

Model DC848 Data Concentrator

To completely remove the mother board from the unit: After the back panel has been removed, carefully disconnect all of the remaining connectors from the mother board. The mother board is attached to the chassis with six screws: one in each of the four corners and two along the edges, center section top and bottom. Remove these screws and carefully slide the mother board toward the rear of the chassis. For further illustration, see the drawings

located in the back of this manual.

5.5

TEST PROCEDURE, MODEL 848A

EQUIPMENT NEEDED:

1.

Voltage and current metered variable voltage

transformer: "VARIAC", "POWERSTAT", etc.

2. Two Channel Oscilloscope, 15 megahertz minimum bandwidth.

20

3. Audio Signal Generator,

4. AC voltmeter with decibel scale, bridging input.

And for parts replacement:

5. Temperature controlled soldering iron, and

6.

Rosin core, 60140 composition solder.

DO NOT USE SOLDER

Documents required:

hertz-20 kilohertz.

PASTE!

The A3M terminating plug is a connector with a

200

ohm resistor connected between pins 1-2, and

another

55.2

With an ohmmeter, check for 22,000 ohms between circuit ground test point and chassis ground point. The circuit ground test point is located on the circuit

board, center, towards the rear of the unit, next to

resistors

Also check for less than 0.4 ohms between pin

four-pin power connector 5702 and the ground prong on the power supply cord; and between pin power connector and the metal chassis of the 848A.

Attach the power transformer to 5702.

Using a variable voltage transformer, increase the voltage slowly to 120 volts, stopping to troubleshoot the line current is in excess of

Measure the voltage from the ground test point to chassis. It should be 0.0 k0.5 volts DC.

Measure the voltage from the ground test point to the input terminal of U701. It should be approximately

15.0 20.5 volts DC.

200

ohm resistor connected between pins 1-3.

Voltage Test

R389 and R390.

200

milliamperes.

1

of the

1

of the

if

Schematic Diagram, Figure 7-1 Assembly Diagram, Figure 7-2

55.1

Set-up leg) of U702. It should be approximately

to^

Carefullv remove the screws on the ~isualliins~ect the mother board for proI;er I.C.'s and fuse (2 ampere slow-blow).

Check that all cables are plugged in with the proper orientation.

Set all of the adjustment pots on the adjustment board to minimum.

Set all switches to off. Increase the signal level by 20 dB to -25 dBu Connect the test terminatine ~lue to Lie Connection should show on the scope.

?k

5401 and a terminating plui lo Line Input 5103.

The 50-pin test terminating plug is a 50-pin connector with twenty-five the pins

as

620

ohm resistors connected between

follows: 1 and

26,

Intercom System

2 and 27,

.

cover.

.

.25 and 50.

Measure voltage from the output terminal of should

Measure voltage from the output terminal (center

6.5 k0.5 volts.

5.53

Apply a -45 dBu (12 millivolt ~eak-to-~eak),

signal to the front panel headset connector pins

2. Connect the test probe to UlOl pin the GAIN control R505 UP until a signal of 3volts peak-to-peak is seen on the scope.

Decrease the signal level by 10dB to -35 dBu

(40

at appro~ately 4 volts ~eak-to-~eak.

be

approximately 12.7 20.5 volts DC.

Microphone Preamplifier

(120 millivolts peak-to-peak), 4 volts peak-to-peak

millivolts, peak-to-peak). The level should remain

and

Limiter Test

U701, it

400

1.

Slowly turn

hertz

1

and

Page 5-2

Model

TECHNICAL MANUAL

84814

Matrix Intercom Station / Model DC848 Data Concentrator

Disconnect the panel microphone by unplugging Connect the signal between pins connector the panel microphone selected (PANEL Mic pushbutton depressed).

55.4

Select the headset microphone by releasing the PANEL Mic pushbutton and apply the signal at panel.

Check the unswitched microphone output at pins 4 and 5. The output level should to-peak (+5 au). Decrease the input signal to 45 dBu. The output level should peak The output level should be Increase the frequency to level should be 2volts peak-to-peak

1

dBu). Return the input signal to

35 au.

Connect to Move the front panel microphone switch to "on"; The signal should be

Check pin locations should have 7volts peak-to-peak when the

microphone is turned on. Select the panel Mic switch to off; The

should disappear.

555

555.1

switch between pins

J104

switch set to off, close the remote switch. The Mic circuit should turn on and the Mic pushbutton should illuminate brightly.

555.2

Connect a headset with switch wired per Figure This switch should also operate the microphone circuit when the front panel Mic switch

55.6

Apply a -35 dBu, headset connector. Connect

5104.

-3

(+2.7 dBu). Change the frequency to

External Mic-On Switches

REAR PANEL Mic SWITCH Connect a

on the rear panel.

Talk Electronics

Check for proper signal level with

Unmvitched Microphone Output and

Frequency Response

dBu to the headset connector on the front

U101,

7.

7

volts peak-to-peak.

1

and 7 of

6

and 7 of the auxiliary connector

PHANTOM HEADSET Mic SWITCH

400

hertz signal to the front panel

10

and

11

be

4 volts peak-

be

3 volts peak-to-

3

volts peak-to-peak.

10

kilohertz.

(0

400

There should be no signal.

U103.

With the front panel Mic

analylxr or oscilliscope

Both locations

400

is

set to off.

5102.

of auxiliary

400

hertz

5104,

10

hertz

The output

dBu to

hertz at

Hertz tone

2-10.

to the terminating resistor between pins

the

50

pin terminating plug. Select station

output signal should be approximately peak-to-peak Turn-on stations The signal should be completely gone.

station

the input level to -45 dBu. The output signal should be approximately frequency to the same. Change the frequency to

output level should be the value at hertz. Move analyzer leads to the next resistor on the terminating plug. That is station 2. Verify an output

-

when the station is selected, and then ver' that there

is

no output when the station is turned o

station to station until

from been checked.

-

On the last resistor, number

-

BUS), no signal should be present. Depress the momentary button for the should be present when the button is pressed and gone when the button is released. Turn off

55.7

TW

Connect analyzer to channel resistor on pin 2 of the terminating plug. Depress conference line about 25 volts peak-to-peak. Check the frequency response. Change the input frequency to The level should be 25 volts peak-to-peak. the frequency to remain the same.

Turn on conference line 2 TALK and turn off conference line line

1.

3) and repeat the above steps. Remember, a signal should be present when the channel the signal should

Apply a signal to conference line

Center the conference line Fqe 3-3). Turn the LISTEN level control for

(-10

all).

1-24.

Turn off the signal at station

1

and check the frequency response. Lower

-13

dBu. Change the input

100

hertz The output level should be

-16

dBu or 3

400

hertz. Return to -35 dBu at

all

of the 24 outputs have

25

ALL

TALK. The signal

all

the front panel talk buttons.

Talk Electronics

1

TALK The signal level should be

10

kilohertz The level should

1

TALK. No signal should appear on

Now move the analyzer over to channel 2 (pin

be

gone when the channel is off.

0

dBu (approximately 2 volts peak-to-peak)

1.

TW

BALANCE control

1

(located on the adjustment

1

and

600

10

kilohertz. the

dB + 1

dB below

2'

(the

ALL

TW

terminating

100

is

selected, and

R501

26

on

1.

The

millivolts

1.

Turn

on

400

Continue

TALK

hertz.

Change

for

card,

see

Page 5-3

Model

TECHNICAL MANUAL

84M

Matrix Intercom Station / Model DC848 Data Concentrator

1

R506 fully clockwise. Connect scope probe to

line pin 7 of U202 and depress the conference line LISTEN button. The level should

2

0.25 volts peak-to-peak,. Rotate the level

2.5 control for this channel clockwise checking for smooth action and any dead spots. Check the frequency response. Change the input frequency to 100 hertz. The level should be volts peak-to-peak at pin 7 of UUn. Change the frequency to 10 kilohertz. The level should remain the same. Repeat procedure for conference line 2.

5.5.9

PGM

Input

On the rear panel auxiliary connector apply a

-10 dBu signal to pins 2 and PROGRAM level control on the adjustment card

fully clockwise. Check for 2.75 peak, at pin

clockwise and counter-clockwise checking for smooth action and dead spots. Check for frequency response. Change the input frequency to 100 hertz. The level should be 2.5 volts peak-to-peak at pin Change the frequency to 10 kilohertz. The level should be 1.75 volts.

55.10

Apply a -10 dBu signal to the last resistor (pins 25,50)

of the 25-pin terminating plug. Rotate the

LISTEN level R508 fully clockwise. The level should

be

2 volts peak-to-peak, + 0.25 volts, at pin 7. Rotate the adjustment clockwise and counter-clockwise checking for smooth action and dead spots. Check frequency response. Change the input frequency to

100 hertz. The level should be 1.50 volts peak-to- peak, +0.25 volts, at pin 7 of U202. Change the frequency to 10 kilohertz. The level should be

1.25 volts peak-to-peak,

55.11

Connect jumpers into the programming section so that the unit has a station assign address of station

(i.e. install jumpers AB, CD and EF on channel See Section 2.3.) Connect a -10 dBu signal across resistor MATRIX LISTEN level control The level should be approximately 2.75 volts peak-to-

peak, control clockwise and counter-clockwise, checking for smooth action and dead spots. Check for frequency response. Change the input frequency to 100 hertz.

7

of U2.02. Fully rotate the adjustment

ALL

TALK Bus

Matrix Listen

1

of the 25-pin terminating plug. Rotate the

+

0.25 volts, at pin 7 of UUn. Rotate the level

clockwise and counter-

2

0.25 volts, at pin 7 of U202.

be

approximately

3.

Rotate the

+

0.25 volts peak-to-

7

of U202.

R509

fully clockwise.

1

150

AU

1.

The level should be 2.5 volts peak-to-peak,

+025 volts, at pin 7 of UUn. Change the frequency

to 10 kilohertz The level should be 1.75 volts peak-to-peak,

+

0.25 volts. Leave the signal on the matrix input,

400

returning to control fully clockwise.

55.12

Connect a 16 ohm load to the dynamic microphone headset connector between pins 3 and panel. Connect the probe across the load and rotate the front panel level control operation and dead spots. The level should be approximately Clipping should occur between one and two o'clock on the front panel volume control with the -10 dBu input signal on the matrix input.

55.13

Check the loudspeaker amplifier. Attach a probe to the white lead of the loudspeaker. Turn the loudspeaker on and increase the level to clipping. Clipping should occur between twelve and one o'clock on the front panel volume control with the -10 dBu input signal. Signal should be approximately 10 volts peak-to-peak at clip level.

55.14

Adjust the volume control for 1 volt peak-to-peak

output to the front panel speaker. Turn the Mic switch "on". The DIM is now activated. By rotating the DIM adjustment R504 the level should vary between 0.6 volts peak-to-peak and 50 millivolts peak- to-peak. Set the

55.15

Connect a headset to the front panel dynamic headset connector. Select simultaneously. Speak into the microphone. Adjust

balance

sure the loudspeaker is off. Turn up the sidetone pot

R503.

Adjust to desired level. Select

into the panel microphone. Sound quality should be clear and clean. Disconnect the headset. Connect a carbon microphone into the carbon microphone jack. Speak into the microphone. Sound quality should be clear and clean.

Headphone Amplifier

Loudspeaker Amplifier

Loudspeaker

Listening Test and Balance Adjust

1

Sound quality should be clear and clean.

hertz, and leave the LISTEN LEVEL

4

checking for smooth

8

volts peak-to-peak at clipping.

Dim

dim

level to 0.3 volts peak-to-peak.

TW

1

TALK and LISTEN

R501 for a null. Repeat for

PANEL

TW

dynamic microphone

on the front

2. Make

Mic. Speak

Page 5-4

TECHNICAL MANUAL

Model

848A

Matrix Intercom Station / Model DC848 Data Concentrator

End of test. Replace top cover and carefully replace screws. Return the unit to service.

5.6

DC848

TEST

PROCEDURE

EQUIPMENT NEEDED

1.

100 megahertz oscilloscope with an XI0 scope

probe

2. Multimeter Variable voltage

3.

transforher, is. Variac or

equivalent

4. A 25-pin (RS232) cable

5. Two or more tested Model

6.

As required, 9-pin (RS422) cable

Computer termmal, DEC VT100-type, with

7.

848A

units

keyboard

Documents Required:

Schematic Diagram,

SD5555 Wirimg Diagram, WD5556 Technical Manual TM5545

Performance Check

5.63

Hook up the computer terminal to the DC848 at 5103 or 5104 ("computer terminal") using the RS232 cable. Use a null modem or null modem type cable to plug directly into the computer.

848A

Connect the Model

units to the DC848 at 5102

("Serial Data") using the RS422 cable. Turn on the power to the DC848. No fault LED's on

the DC848 PC board should be on. These LED's are used to indicate communication path errors. If any LED's are on, double check the cabhg between the

848-4

Model

units and the DC848. Look for shorts,

open paths or two input cables going to the same

848A

unit. The

848A

units should be strung together in series. Any unused addresses should have their data cables connected together to complete the path.

Hit the "return" key on the computer terminal keyboard to get the

DC848 Main Menu to appear on

the screen. Verify the "control program version" at

is

the top of the screen version installed in the

the smae

DM

PCA.

as

the software

Verify that the Model

BC848

version software installed and

under test has the latest

is

properly labeled.

Attach the modular power supply to a variable power

transformer. Slowly increase the AC

while monitoring the line current. If there is excessive current draw, stop and troubleshoot.

5.6.2

Power

Supply

When the DC848

is

fully powered to 120 volts AC, the front panel LED should be brightly lit. Verify each of the following DC power supply points:

U4 output = +5 volts DC

2

=

t

U19, U19,

10 volts DC

6

=

-10 volts DC

Turn off the power to the Model DC848.

With a scope probe, check U5 (microprocessor) at

Bin

40

for a square wave at 1.5 megahertz that has a

(high

duty cycle of 50%

This

signal

is

the DC848 control line of the RS422

is

driver, which

848A

panels.

the

and low the same).

BC848

polling sequence of inline

,.,

Reconnect the RS422 ("Serial Data") to the DC848. With a scope probe, check U2, Pin 2 for a pulse that

848A

responds to the

848A

panel button).

panel commands (touching an

Page 5-5

TECHNICAL MANUAL

Model

5.6.5

Programming the DC848

Read over Chapter 2 of this Technical Manual for programming procedures. Verify that each menu

works according to the software version installed in

BC848.

your

5.6.6

Unit Configuration for Shipment

DC848 units are shipped from the factory in the following configurations:

Sinde

DC848.

with no svstem

848A

Matrix Intercom Station / Model DC348 Data Concentrator

Forced crosspoints none Inhibited crosspoints none

Latch disable none Hands Free Answer none Auto speaker Auto mic disabled Tally flash time

DC848

Forced crosspoints Inhibited crosspoint..any undesignated station Latch disable Hands Free Answer Auto speaker

Auto mic

Tally flash time

DC848

Programmed as indicated on system specification sheet

.............................

Svstem (standard setup)

.............................. disabled

Svstem (s~ecial setu~)

.......................

....................

............................

........................

.........................

...................

........................

.............................

disabled

40

seconds

none

.........................

..........................

....................

disabled

40

seconds

none

Page

5-6

Model

TECHNICAL

848A

Matrix Intercom Station / Model DC848 Data Concentrator

MANUAL

RTS SYSTEMS INC.

848A

SYSTEM TERMINAL CONTROL PROGRAM VERSION

848A

MAIN MENU

1.

DISPLAY FORCED CROSSPOINT LIST

2.

DISPLAY INHIBIT LIST

3.

DISPLAY PANEL SWITCH ACTION MENU

4.

DISPLAY AUTO RECIPROCAL LIST

5.

DISPLAY AUTO FUNCTION MENU

ENTER

848A

SYSTEM TERMINAL CONTROL PROGRAM VERSION

848A

7.

8.

9.

SELECTION:

MAlN MENU

TALLY FLASH TIME SYSTEM STATUS SYSTEM CONFIGURATION

2.1

5.0

ENTER SELECTION:

Sohre Versions

Figure

5-1

Page

5-7

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station / Model DC848 Data Concentrator

RTS SYSTEMS INC. PANEL NUMBER 01

02

13 14 15 16 17

TI L1 T2

1. TOGGLE FORCED TALK PATH

2. TOGGLE INHIBIT TALK PATH

3. DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAIN MENU

RTS SYSTEMS INC. PANEL NUMBER 01

02

13 14 15 16 17 18 19

03

-

03

-

848A

FORCE/INHIBIT A TALK PATH

04

05

-

Switch

05

06

18

#4

06

- - - -

FO

L2

848A

FBRCE/INHIBIT A TALK PATH

04

FO IH

07

-

Forced Crosspoint is

08

19

20

Figure 5-2

07

08

20

09

10 11 12

21

22

09

10 11 12

- -

21

22

ON

23

24

-

23 24

TI L1 T2

1. TOGGLE FORCED TALK PATH

2. TOGGLE INHIBIT TALK PATH

3. DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5. RETURN TO MAIN MENU ENTER SELECTION:

L2

Switch #5

Figure 5-3

-

Crosspoint Inhibit is

Page

5-8

ON

TECHNICAL

Model

FITS

SYSTEMS INC.

PANEL NUMBER

$2

02

13 14 15

TI

L1

1.

TURN ON MOMENTARY ACTION (LATCH DISABLE)

2.

TURN OFF MOMENTARY ACTION

3.

DISPLAY ANOTHER PANEL

4.

DISPLAY NEXT PANEL

5.

RETURN TO MAlN MENU

TURN ON MOMENTARY ONLY FOR SWITCH NUMBER:

03

T2

848A

01

Matrix Intercom Station

PANEL SWITCH ACTION MENU (LATCH DISABLE)

04

05

06

LD

07

-

16

17 18 19

L2

MANUAL

/

Model

De&QS Data Concentrator

08

20

21

10 11 12

22

23

24

Switch

RTS SYSTEMS INC. PANEL NUMBER

13 14 15 16 17 18 19

1.

SET HANDSFREE ANSWER FUNCTION

2.

CANCEL HANDSFREE ANSWER FUNCTION

3.

DISPLAY ANOTHER PANEL

4.

DISPLAY

5.

RETURN TO MAlN MENU

01

PANEL

HANDSFREE ANSWER LIST (AUTO RECIPROCAL)

Switch

#6

-

7

-

Hands-Free Answer is

Figure

Latch

Figure

5-4

Disable

20

5-5

21

is

ON

22

ON

23 24

Page

5-9

Model

TECHNICAL

848A

Matrix Intercom Station / Model DC848 Data Concentrator

MANUAL

RTS SYSTEMS INC.

PANEL NUMBER 01

01 02030405060708091011 12

**

- -

13 14 15

-

Ti

L1 T2

1.

ASSIGN SWITCH TO A GROUP

2. REMOVE SWITCH FROM GROUP ASSIGNMENT

3.

DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5.

RETURN TO MAIN MENU

ASSIGN SWITCH TO GROUP, ENTER GROUP NUMBER (1-4): 1

ENTER SWITCH NUMBER (01-24):

848A

PANEL GROUP ASSIGNMENT LIST

16

G2-

L2

G2G2-

17 18 19

20

21

-

- -

22 23 GI GI

-

24

-

Figure 5-6

22

and

23

Panel #1- Switches

Switches 7,8

&

15 are Group

are in Group 1

2

RTS SYSTEMS INC.

PANEL NUMBER 04

AUTO TALLY FLASH TIME

1.

LENGTHEN TALLY FLASH TIME (MAX

2.

SHORTEN TALLY FLASH TIME (MIN 10 SECONDS)

3.

DISPLAY ANOTHER PANEL

4. DISPLAY NEXT PANEL

5. RETURN TO

[ L ]

Tally Flash Time Longer

[ S ]

Tally Flash Time Shorter (Min. 10

848A

PANEL TALLY SETUP

......................

MAIN MENU

(Max.

Panel

10 SECONDS

60

SECONDS)

60

Sec.)

#4

-

Tally Flash Time set at

Figure 5-7

Page

5-10

10

seconds

TECHNICAL MANUAL

Model

OK = Panel is communicating with system

-

=

Panel is not communicat~n with system

XX = Communication oollision

01

02

OK

-

13

14

OK OK OK OK OK

848A

Matrix Intercom Station / Model DC848 Data Concentrator

72

or more panels at same address)

03

04

05

OK OK OK OK OK OK OK

15

16

06

17 18 19

-

07

08

W

20

OK OK OK

21

10 11

)(X

XX

22

23

-

12

OK

24

RTS SYSTEMS

**

,- ,,

--

,,

-- --

--

P#

09:

01

-,

--

,,

--

,, ,-

--

,,

-,

Panels 2,18,22 ,23 & 24 are off-line,

and there is a problem with Panels 11 and 12

being addressed to the same location

INC.

848A DYNAMIC MATRIX STATUS DISPLAY

,,

-

**

,- ,, ,,

--

,,

02

,,

mo

-,

-, -, ,,

--

-, ,- ,,

--

,, ,,

--

,,

-, ,-

,-

--

**

.,

--

**

--

-,

.-

--

.,

--

03

04

-- --

,-

--

-, ,-

--

-- -_

,,

.,

--

-_

--

-,

.,

-..

--

,,

.-

--

-,

,,

--

,-

--

**

--

**

--

-,

--

05

06

--

-- -- --

--

,-

--

,-

--

-- --

,,

,-

--

,-

--

-,

--

-,

--

,,

,- ,, ,-

--

,,

--

,,

om

,- ,,

--

**

,,

--

em

,,

--

-, ,, ,,

--

P-

,,

--

-0

,,

--

,,

--

**

--

08

--

0-

--

,, ,,

--

,,

--

,,

--

Figure

0-

,-

--

o-

--

,,

--

-, ,,

o-

,,

,-

-s

,-

0-

**

--

,,

**

-..

10

,,

,-

,,

,-

,,

0-

--

-,

-, ,, ,,

,,

me

-,

--

..-

--

,,

-- --

--

-,

,, ,-

5-8

--

.=,

--

-,

-, ,-

--

P,

,-

-,

,- -, -,

--

,- -,

**

-..

--

**

--

,,

--

-,

,-

-, ,,

--

-,

,,

--

,,

-,

--

-,

-a

me

,-

-, -,

..,

,,

-- --

--

Po

..-

--

,-

--

-..

,-

,,

P-

--

-o

--

14

--

,,

**

,,

--

**

--

-.

--

,,

..-

--

..-

,-

,,

0-

--

,-

--

,,

,-

--

.A-

--

-,

..-

-.-

-,

--

,,

--

,,

,- ,, ,-

**

,- ,- ,,

--

,-

.-

--

,, ,,

--

PP

--

..-

--

..-

--

,,

--

,-

,,

-P

-, -,

**

-D

**

*-

--

,-

--

-- --

,,

,-

--

,-

,- ,-

--

-,

--

em

--

,-

--

-- --

o-

-- --

18

--

0-

--

,,

--

,,

--

,, -, ,-

,-

--

,,

--

**

--

**

,-

--

-0

,-

--

,- ,-

-- --

--

,-

--

-- --

--

-,

--

-,

-0

-"

-- --

,-

--

..-

--

**

,-

..-

**

,-

--

-,

-- --

,,

,, ,-

--

,-

--

,-

--

..-

--

.,-

--

-- --

-"

om

,-

,- ,,

--

.,

--

-, ,-

--

..-

,-

,- -,

--

.-

**

--

**

,-

--

-..

--

-a

--

**

Figure 5-9

Panel 9 is in communication with Panels 1 through

Panel 11

with

Panels 8,10 and 14

Page 5-11

6,

and 18

TECHNICAL MANUAL

Model

5.7

UNIT TROUBLESHOOTING

PROBLEM:

"buzz" when the touched.

SOLUTION:

and the gooseneck has been broken. Check the unit with an ohmmeter DC voltage between chassis and circuit ground.

PROBLEM. SOLUTION:

(2) Switch board has been disconnected from the mother board. Check cables inside of the unit.

PROBLEM:

SOLUTION:

the "line input" or the splitter assembly. (2) The cables

on the mother board to the come loose from their connectors on the mother

board.

PROBLEM: SOLUTION:

After your

readjust the sidetone. (2) Check for double or no

termination. Verify that termination plugs are in

place.

PROBLEM:

levels and/or no listen from the line.

SOLUTION:

(2) Cable problem from the

(3)

cable.

A

(4) listen level pots have not been adjusted. master volume pot has not been adjusted.

5.8

SYSTEM TROUBLESHOOTING

The Model of up to 24 different point-to-point stations, and two RTS Systems

can be entire stations off-line, humming or squealing, or level changes. These problems are traceable to one of two areas: the cable connections or the individual units. When you have isolated a problem to an individual unit, stop and refer to the test procedure listed in Section 5.5.5.

The unit's talk and/or listen circuits

The connection between chassis ground

No lights.

(1) No power being applied to the unit.

No output to the line.

(1) The 50-pin cable is not secured to

Too much feedback.

(1)

8481%

has been connected to the system,

Channel output on the line is at different

(1)

Cable problem inside of the 848A.

Channels have not been properly balanced.

bilateral circuit has malfunctioned. The

848A

is designed to function in a system

TW

conference lines. System problems

8488

Matrix Intercom Station / Model DC848 Data Concentrator

848A

as

chassis or gooseneck is

in step 5.5.2. Also check for a

848A

back panel have

Incorrect balancing of sidetone.

848A

to the line-50-pin

{z

The

If products other than RTS Systems products are connected to the Model interface problems.

5.8.1

Station Off-Line

The problem is either in the unit or in the connecting line. Make sure the power connector to the unit is firmly in place and the power supply is plugged into a live outlet. Check the 50-pin ribbon connector line. Disconnect and then reconnect the connector from both the back of the

connectors appear to be sound, exchange the 50-pin ribbon connector line with another line from a different station. If this doesn't solve the problem, go inside of the individual unit and test.

5.8.2

Level Changes

Level changes are a result of improper termination and/or too many units on the bus. Check to see that you have not exceeded the recommended number of stations per bus. And check to see that you have not double terminated the system.

Squealing is caused when the system is not terminated. If there are less than 17 stations in the point-to-point system, one termination is required. The termination plug must be of the proper size. From

1

to 8 stations require a 680 ohm termination

plug. From termination plug.

Each

TW

a

TW

line

the back of the

system provides its own termination.

The following are the screwdriver-adjustable trimmer potentiometers:

TW

1

BAL

TW

2

BAL

Mic Microphone gain adjustment These adjustments are explained in Section 5.

9

to 16 stations require a 1500 ohm

system line also needs to be terminated. If

is

not used, insert the terminating plug into

84814.

Conference Line 1 balance Conference Line 2 balance

848A

And

If a

system, there may be

and the splitter. If the

Squealing

TW

line is used the

TW

Page 5-12

Model

rnCHNICAI.4

848A

Matrix Intercom Station / Model

5.83

Mic l/Mic

MANUAL

DW

2

Adjustment

Data Concentrator

Electronic Mic SWITCH

1

controls the microphone

output to the point-to-point electronics. Electronic

2

Mic SWITCH

TW

the

electronics. These switches have been factory

set to require a signal from the front panel Mic

controls the microphone output to

ON switch to operate. If a user wants to have the microphone continuously on to either of these destinations, then the factory-installed jumpers have to be moved. Move

1

SWITCH

permanently on. Move

W2

to

W3

to turn Mic

W1

to

W4

to

will

turn

Mic SWITCH 2 permanently on.

(REAR

PM

AUX

COAIIV)

Figure

Mic

5-10

1/Mic

Adjustment

Page

5-13

2

Model

TECHNICAL

848A

Matrix Intercom Station / Model

MANUAL

DC848

Data Concentrator

Figure

Test

Setup

Page

5-11

5-14

Model

TECHNICAL

848A

Matrix Intercom Station/Model

MANUAL

DCW

Data Concentrator

SECTION

6.1 INTRODUCTION

Parts List is divided into sub part lists, listed below in 6.1.1 Division of Parts Lists. Immediately following the description of a part is the manufacturer and the manufacturer's part number.

6.1.1

Model

Model DC848:

6:

LISTS OF REPLACEABLE PARTS

This

section contains parts lists, and instructions for ordering replacement parts. The

DMSION OF PARTS LIST INTO SUB-PARTS LISTS

848A

Final Assembly Front Panel Assembly Back Panel Assembly Sub-chassis Assembly

Adjustment Board Side

Printed Circuit Assembly, Mother Board Printed Circuit Assembly, Switch Board Printed Circuit Assembly, CPU Board Printed Circuit Assembly, Adjustment Board

Printed Circuit Assembly, Listen Select Matrix Board Cable Assemblies Power Supply Assembly

Rail

Assembly

6.16 Final Assembly

6.17 Back Panel Assembly

6.18

6.19 Power Supply Assembly

63 HOW TO OBTAIN PARTS

Printed Circuit Board Assembly, UMC-100

Parts may be obtained directly from Customer Service, RTS Systems, Inc.:

RTS

SYSTEMS, Inc.

W.

1100 Burbank, CA 91506 (818) 566-6700

Chestnut Street

Page 6-1

Model

63. SHIPPING LIST

63.1.

Model

848A Shipping List

TECHNICAL

84849

Matrix Intercom Station/Model

MANUAL

DC848

Data Concentrator

Model

632

Model

848.4

QTJ

1 1 1 17 1 1

1

Model

DC848

a

1 1

1

1 1

ordering number:

DESCRIPTION Model

Instruction Manual Power Supply Assembly Terminal connectors, pin crimp

Plastic bag Model

DC848 Shipping List

ordering number:

848A

15-pin connector

848A

DESCRIPTION Model

Instruction Manual Power Supply Assembly Plastic bag Model

DC848

9010-5545-00

with

Shipping Carton

9010-5556-00

Shipping Carton

RTS PART NUMBER

locking ramp

RTS PART NUMBER

Page

6-2

6.4

FINAL

Model

ASSEMBLY

TECHNIC&

$48A

Matrix Intercom Station/Model

(9010-5545-00)

MAMJAL

DC848

Data Concentrator

REF#

65

FRONT

gm

PANEL

DESCRIPTION Front Panel Assembly,

Adjustment Board Side Rail Assembly,

Back Panel Assembly, Printed Circuit Board Assembly, Mother Board, Side rail,

Screw, 6-32 x Lockwasher, #6 internal tooth, zinc Screw, 8-32 x 3/8", pan head phillips Washer, lock #8

Nut, hex, kep 6-32 Printed Circuit Card Assembly, L.S.M., Cover, top

Cover, bottom Sub-chassis Assembly, Printed Circuit Board Assembly, Adjustment Board

Printed Circuit Assembly, Switch Board,

Printed Circuit Assembly, CPU Board,

Power Supply Assembly

ASSEMBLY,

DESCRIPTION

Front panel

Microphone, gooseneck,

Connector, carbon Mic, Switchcraft PIN MN114B

Connector, 5-pin female, Cannon PIN AXR-5-31

Connector, Cpin female, Molex PIN 09-50-3041

Connector, 3-pin female Molex

Spacer, hex 6-32 x 9/16", Amatom P/N 8216-A-0632 Screw,

Connector, pin crimp terminal Molex PIN

Nut, kep, Wire, 24 awg, bus, Belden PIN Wire, Wire, Wire, 24 awg,

Wire, 24 awg, 6" long, orange

Wire,

Wire, 24 awg, 6" long, brown, vinyl 19 strands

Connector, pin crimp, female, Molex PIN 08-50-0106

Sleeving, shrink,

Sleeving, Teflon #20 awg, Alpha tft, .10

848

right

4"

phillips, pan head, yellow

848

9020-5543-00

u)",

Shiba PIN LR-420

09-50-3031

4-40

x 318" phillips, flat head, brt. wht. zinc

4-40

8022,

24

awg,

6"

long, green

24

awg, 6" long, red

6"

long, black

24

awg, 6" long, yellow, vinyl

9"

black

type

cadmium

08-50-0108

.5 ft.

B

ft.

RTS PART NUMBER

Page 6-3

6.6

BACK

Model

PANEL

ASSEMBLY, '9020-5542-00

TECHNICAL

848A

Matrix Intercom Station/Model DC848 Data Concentrator

(Drawing

MANUAL

AS5542)

RTS PART NUMBER

Back panel

Connector, carbon Mic, Switchcraft PIN MN114B Cable mounting cradle, Panduit PIN TMlS4

Jack, Cconductor, Calrad PIN 30-454

Connector, 3-pin female, Hirose PIN HA16PR-3S Connector, 3-pin female Molex PIN 09-50-3031 Connector, 4-pin female Molex PIN 09-50-3041 Connector, pin crimp terminal Molex PIN 08-50-0108 Connector, pin female crimp Molex PIN 08-50-0106 Lug, solder #6, Smith PIN 14166

4-40

Screw, Jack socket assembly (2 per pkg), 3M PIN 3341-1L Screw, 4-40 x 318" phillips, flat head, brt. wht zinc Nut, kep, 4-40 Wire, 24 awg, Wire, Wire, Wire, 24 awe, Wire, 18 awg, green, Teflon stranded, 1.25 Wire, 20 awg, red 19 strand Teflon .5 Wire, 20 awg, violet, vinyl, 19 strand$ ft

Label Shrink Tubing, 5/16", OD Clear, 4 in. Cable Assembly (see 6.15)

6.7

SUB-CHASSIS ASSEMBLY, 9020-5600-00

Spacer, hex 6-32 x 7/16", Smith

Spacer, 6-32 x 14" M/F hex, Amatom PIN 9475A0632 Spacer, 4-40 x 1" hex, thread, Smith PIN 2334 Washer, #6 flat, cadmium plated

Lockwasher, #6 internal tooth, zinc-plated Screw, 4-40 x 3/8"ssocket cap head

Screw, 4-40 x Screw, 6-32 x

Pot, 10K ohm audio, Bourns PIN 81AlA-B24-S15 Connector, pin crimp terminal, Molex PIN 08-50-0108 Connector, pin crimp, female, Molex P/N 08-50-0106 Connector, Connector, housing, 2 pin, Molex PIN 09-50-3021 Wire, Wire, Wire, 24 awg, Wire, Wire, 20 awg, PVC 19 strands, white Speaker, Oaktron PIN FE-3XSFA

Knob, gray 4" shaft, Selco PIN S210-250 Cap, gray with dot, Selco PIN (5212 Speaker

x 318" phillips, pan head

5"

long, red

24

awg,

5"

long, violet

24

awg,

5"

long, 19 strand vinyl, black

5"

long, blue

8",

4

",

3

pin female, Molex PIN 09-50-3031

24

awg,

6"

long, red

24

aw&

6"

long, black

6"

long, orange

20

awg, vinyl, 19 strands, black

grill

ft.

9293

pan head, yellow cadmium phillips, pan head, yellow cadmium

9080-5542-00 2013-0003-00

1005-0046-00 2013-0005-00 2018-0036-00 2006-0018-00 2006-0013-00 2006-0014-00 2006-0016-00

1003-0003-00

1008-4035-00

1005-0045-00

1008-4001-00

1007-0001-00 2511-0008-00 2511-0124-00 2511-0007-00 2511-0005-00 2511-0304-00 2511-0329-00 2511-0358-00 9170-5561-00 1301-0012-00 9020-5587-00

RTS Systems, Inc. Burbank, CA 91506

/

FSCM: 60572 TM5545 / Third Edition, August 1988

Page 6-4

6.8

ADJUST ME^

Model

848A

BOARD SIDE

TECHNICAL

Matrix Intercom Station/Model DC848 Data Concentrator

RAIL

ASSEMBLY,

MANUAL

9020-5365-00

DESCRIPTION

1 1 1

2 Nut, hex, kep 6-32 6

6 Lockwasher, #6 internal tooth, zinc-plated

1 1

2 2

6.9

PRINTED

REF# DESCRIPTION PC1

Cl00 6101 C102 C103-C104 C105

C106 C107 C108 C109 CllO Clll C112 C113

1

Side rail, left

PCA Adjustment Board Front panel

Screw, 6-32 Support, adjustment card

Latch and keeper, Southco PIN A4-10-501-U) Screw, 4-40

.

Nut, kep, 4-40

CIRCUIT ASSEMBLY, MOTHER

Printed circuit board Spacer, 6-32

Pem fastener, 4-40, PEM PIN Lockwasher, #6 internal tooth, zinc plated Washer, compression 4-40, Motorola PIN B52200F006 Screw, 4-40

Screw, 6-32 Capacitor, electro radial 100uF/10 volts Capacitor, ceramic mono radial .033/50 volts Capacitor, tantalum radial luF/35 volts Capacitor, electro radial 10uF/16 volts Capacitor, electro radial 47uF/16 volts Capacitor, electro radial 10uF/16 volts Capacitor, ceramic mono radial .luF/50 volts Capacitor, ceramic mono radial .OluF/50 volts Capacitor, ceramic mono radial .luF/50 volts Capacitor, ceramic disc radial 33 pF/50 volts Capacitor, ceramic mono radial .luF/50 volts Capacitor, ceramic mono radial Capacitor, electro radial 10uF/16 volts Capacitor, ceramic mono radial .22 uF/50 volts Capacitor, tantalum radial luF/35 volts Capacitor, ceramic mono radial Capacitor, ceramic disc radial 33 pF/50 volts Capacitor, ceramic mono radial luF/50 volts Capacitor, ceramic mono radial .22 uF/50 volts Capacitor, ceramic disc radial 10pF/50 volts

x

3.i

x

318" cadmium, phillips, pan head

x

5/16", Amatom PIN 9534B-B-0632

x

5/16", pan head, phillips yellow cadmium

x

3.i,

"

phillips, pan head, yellow cadmium

BOARD,

9030-4706-00

KF2-440

pan head, phillips

clear

.22

uF/50 volts

.22

uF/50 volts

cadmium

RTS PART NUMBER

9040-4706-00 100r-0115-00

1005-0114-00 1006-0006-00 1006-0041-00 1008-4024-00

1008-6061-00

1513-R107-4C

1511-R333-21

1515-R105-3G

1513-R106-4E 1513-R476-4E 1513-R106-4E

1511-R104-21 1511-R103-21 1511-R104-21 1510-R330-21 1511-R104-21 1511-R224-21

1513-RIM-4E

1511-R224-21

1515-R105-3G

1511-R224-21 1510-R330-21 1513-R105-41 1511-R224-21 1510-R100-21

Page 6-5

TECHNICAL MANUAL

Model

MOTHER BOARD ASSEMBLY, (Continued):

848A

Matrix Intercom Station/Model

DC848

Data Concentrator

REF#

a26

(5227 (5228 C229 not used

C230

C301-CMtI Capacitor, electro radial 10uF/16 volts

QTJ

DESCRIPTION Capacitor, ceramic disc radial 220pF/50 volts

Capacitor, ceramic mono radial -22 uF/50 volts Capacitor, ceramic mono radial .luF/50 volts Capacitor, ceramic mono radial .22 uF/50 volts Capacitor, electro radial luF/50 volts Capacitor, ceramic disc radial 470pF/50 volts Capacitor, electro radial luF/50 volts Capacitor, ceramic mono radial .OluF/50 volts Capacitor, electro radial 100uF/10 volts Capacitor, electro radial 10uF/16 volts Capacitor, ceramic mono radial .22 uF/50 volts Capacitor, ceramic mono radial .luF/50 volts Capacitor, electro radial 47uF/16 volts not used Capacitor, ceramic mono radial .22uF/50 volts Capacitor, electro radial 1000uF/16 volts Capacitor, electro radial luF/50 volts Capacitor, ceramic mono radial .OluF/50 volts Capacitor, electro radial luF/50 volts

Capacitor, ceramic disc radial 33 pF/50 volts

Capacitor, ceramic mono radial .22uF/50 volts Capacitor, ceramic disc radial 33pF/50 volts Capacitor, ceramic mono radial .luF/SO volts Capacitor, electro radial 10uF/16 volts Capacitor, ceramic disc radial 10pF/50 volts Capacitor, electro radial 47uF/16 volts Capacitor, electro radial 10uF/50 volts Capacitor, ceramic mono radial .22uF/50 volts

Capacitor, ceramic disc radial 33pF/50 volts

Capacitor, ceramic mono radial .luF/50 volts Capacitor, electro radial 10uF/16 volts Capacitor, ceramic disc radial 10pF/50 volts Capacitor, electro radial 47uF/16 volts Capacitor, electro radial 10uF/50 volts Capacitor, ceramic disc radial .OluF/l kilovolt Capacitor, electro radial 2UX)uF/25 volts Capacitor, electro radial 15,000uF/25 volts Capacitor, electro radial 2200uF/25 volts Capacitor, ceramic mono radial .22uF/50 volts Capacitor, electro radial 100uF/10 volts Capacitor, electro radial 470uF/10 volts Capacitor, ceramic disc radial

.luF/l

RTS PART NUMBER

kilovolt

Page 6-6

Model

TECHNICAL

848A

Matrix Intercom Station/Model DC848 Data Concentrator

MANUAL

MOTHER

REF#

Dl00 Diode IN6263, signal

Dl01 Diode IN914B, signal

Dl02 Diode IN6263, signal

D301-D380 Diode, IN4004,l ampere

D332-D333 Diode,

D701-D704 Diode, MR502

D705

BOARD ASSEMBLY,

_QTY

DESCRIPTION

MR502,

-

not

Diode, IN4004

Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, metal Resistor, carbon Resistor, carbon Resistor, metal

Resistor, carbon Resistor, carbon Resistor, carbon

used

Resistor, carbon

Resistor, carbon Resistor, carbon Resistor, carbon

Resistor, carbon

(Continued):

Motorola

film

f

film

4

film

f

film

4

film

f

film

f

film

f

film

f

film

f

film

f

film

f

film

f

film

f

film

4

film

f

film

4

film

4

film

\

film

f

fh

f

film

f

film

f

film

f

film

f

film

4

film

4

film

f

film

f

film

f

watt f 5% 10M ohm

watt f 5% watt f 5% 10 ohm watt f 5% l00K ohm

watt f 5% l00K ohm watt 2 5% 100 ohm watt f 5% 10K ohm watt f 5% watt f 5% 15K ohm watt f 5%

400

volts

watt f 5% watt 2 5% watt f 5% 470 ohm watt + 5% 68K ohm watt f 5% watt f 5% 22K ohm watt f 5% l00K ohm

watt f 5% l00K ohm watt f 5% 62K watt f 5% watt f 5% 470K ohm watt f 5% watt f 5% l00K ohm watt f 5% 1OK ohm

watt f 1% U).OK ohm

watt f 5% 22K ohm watt f 5%

watt f 1% U).OK ohm

watt

f

5%

l20

ohm

'0

ohm

220

ohm

'0

ohm

22

ohm

220

ohm

220

ohm

l3OK ohm

680

ohm

lK

ohm

RTS PART NUMBER

Page

6-19

Model

TECHMCAL

848A

Matrix Intercom StationIModel

DC848

Data Concentrator

MOTHER BOARD ASSEMBLY, REF#

RU)O

RU)1

R202-R203 not used RU)4 R205-R206 Resistor, carbon

R207-R209 Resistor, carbon R210-R211 R212-R213

R214-R215

R216

R217

R218

R219-R2U)

R221

R222-R223

-

R224

R225-R226

R227

R228

R229

R230

R231

R232

R233

R234-R235

R236

R237

R238-R239 Resistor, carbon

R240 Resistor, carbon

R241 Resistor, carbon

R242

R243

QTY

-

not used

-

DESCRIPTION

Resistor, carbon Resistor, carbon

Resistor, carbon

Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon

Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon

Resistor, carbon Resistor, carbon

(Continued):

film f

film

film f film f

film

film f

film

film f

film

film f

film

film f film f film f film f film f filmsf film film film f film film f film f frlm f film f

film f

f

f f

f

4

watt watt

watt watt watt watt watt watt watt

watt watt watt watt

watt watt watt watt watt watt watt watt watt watt watt watt watt watt watt watt

f f

f

5% 5% 5% 5%

5% 5% 5% 5% 5% 5% 5% 5% 5% 5%

5%

5% 5% 5% 5% 5%

5% 5%

5% 5% 5% 5% 5%

5%

22K ohm

100K ohm

100K ohm 3K ohm 22K ohm 33K l00K ohm 3K ohm 100K ohm

22 ohm 100 ohm l00K ohm 22K ohm

22K ohm

2.2K ohm

2.7 ohm 39 ohm 390 ohm

100 ohm

2.7 ohm

0.5 ohm 22K ohm

7.5K ohm 22K

ohm

1OOK ohm 470K ohm 220 ohm 22K ohm lOOK ohm

RTS PART

NUMBER

R301-R331 R332 Resistor, carbon R333 Resistor, carbon R341-R394 Resistor, metal

R601-R606 R607 Resistor, carbon R608 Resistor, metal

Resistor, carbon

film f film f

fh f

film f

film

film f

watt

5%

22K ohm

watt

5%

100K ohm

watt

5%

10K ohm

watt k 1% 3.01K ohm

f

watt

f

5%

100K ohm

watt

k

5%

22 ohm

watt f 1% 60.4K ohm

Page

6-8

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station/Model

BC8$8

Data Concentrator

MOTHER BOARD ASSEMBLY,

Resistor, metal film # watt f 1% %.OK ohm Resistor, metal film Resistor, metal film Resistor, carbon film Resistor, carbon film Resistor, carbon film Resistor, carbon film Resistor, metal film Resistor, metal film Resistor, metal film Resistor, metal film Resistor, carbon film Resistor, carbon film Resistor, carbon film

Resistor, carbon film Resistor, carbon film

-

Resistor, carbon film i watt f 5% Resistor, carbon film # watt +5% 39 ohm Resistor, carbon Resistor, carbon film Resistor, carbon film Resistor, carbon film

(Continued):

%

watt f1% 60.4K ohm

#

watt 21% m.OK ohm

%

watt f 5% 100 ohm

%

watt f5% 100K ohm

%

watt +5%

4

watt f 5% 22 ohm

#

watt +1% 60.4K ohm

?(

watt &l% m.OK ohm

4

watt f 1% 60.4K ohm

#

watt &I% m.OK ohm

%

watt +5% 100 ohm

#

watt f 5% l00K ohm

%

watt f5%

%

watt f 5% 0.1 ohm

#

watt 95% 2.2K ohm

fdm

#

watt f5% 470 ohm

f.i

watt f5% 22K ohm

i

watt f 5% 1K ohm

4

watt 35%

22K

240

RTS PART NUMBER

ohm

QlOl Transistor, J305/E305, Siliconix Q102 Transistor, 2N5210, NPN Q301 Transistor, 2N5210

LC. NE5532-N, Signetics LC. CD4053 BE, RCA, analog switch I.C. NE5532 LC. LM317LZ, voltage regulator I.C. NE5532 LC. CD4053 BE LC. PIE5532 LC. LM380N-8, National I.C. LM383T, National

Page 6-9

Model

mcmcAL

848A

Matrix Intercom Station/Model DC848 Data Concentrator

lwANuAL

MOTHER BOARD ASSEMBLY,

REF#

-

Q201 Q202 Transistor, J305 Q203

U601-U603 1.C. CD4053 BE U604-U605 I.C. NE5532

U701 U702 I.C. LM317 LZ

W1 Zero ohm jumper W2 Zero ohm jumper W3-W4 not used W5 not used

TlOl Transformer, Bourns PIN LM9003 TI02 Transformer, Bourns PIN LM9003 T201 m2 Transformer, Mouser PIN 42TM018 T203 Transformer, Bourns PIN LM9003

OTY

-

22

DESCRIPTION

Transistor, 2N5210

I.C. Voltage regulator LM317T

I.C. Socket 8 pin I.C. Socket 16 pin Burndy

Transformer, Bourns PIN LM9003

(Continued):

Burndy

RTS PART NUMBER

F701

W701 JlOl 5102 J103 Connector, 4 pin Molex PIN 09-74-1041 5104 Connector, J105 20-pin header Berg PIN 65610-420 5106 not used

5107 5108

1

a/r

Fuse, 2 ampere slow-blow, Fuse carrier, Schurter PIN Fuse holder, PCA mount, Schurter PIN FAU 031.3573 Thermal compound, Thermalloy PIN

Jumper .4" bare, Cambion PIN 3600017040300 Connector, 3 pin Molex PIN 09-74-1031 Connector, 4 pin Molex P/N 09-74-1041

15

pin right angle Molex PIN 09-75-1158

10-pin header Berg PIN 65610-410 10-pin header Berg PIN 65610-410

l20

volt, Bussman PIN MDG2

FEK

031.1666

249

Page 6-10

TECHNICAL MANUAL

Model

MOTHER BOARD ASSEMBLY, (Continued):

848A

Matrix Intercom Station/Model DC848 Data Concentrator

REF#

=

JU)1 5202 5203

5301-5308 5309 5310 5311 5312 5313

5601 5701

XU101-XU205 I.C. socket &pin

6.10

PRINTED

-

..

-

EY

1

41 Coupling piec

DESCRIPTION Connector, 3-pin Molex PIN 09-74-1031

Connector, 2-pin Molex PIN 09-74-1021 Connector, 3-pin Molex PIN 09-74-1031

10-pin header Berg PIN 65610-410 1Cpin header Berg PIN 65610-414

Connector, 3-pin Molex PIN 09-74-1031

14-pin header Berg PIN 65610-414 14-pin header Berg PIN 65610-414 14-pin header Berg PIN 65610-414

Connector, 3-pin printed circuit mount metal Connector, 3-pin Molex

CIRCUIT ASSEMBLY, SWITCH BOARD 9030-3000-09

DESCRIPTI( Printed Circu

,N

t

:,

Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400

Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400 Diode, IN400

1 1

1

. .

1

-

p

r

I

1

I I

I

i

PIN 09-74-1031

Board

EAO

PIN 99-910

ampere, 400 volts

1

ampere, 400 volts ampere, ampere, ampere, 400 volls ampere, 400 volts ampere, 400 volts

1

ampere,

1

ampere,

1

ampere,

1

ampere,

1

ampere, ampere, 400 volts

1

ampere, 400 volts

1

ampere,

1

ampere,

1

ampere, 400 volts

1

ampere, 400 volts

1

ampere,

1

ampere, 400 volts

1

ampere, 400 volts

1

ampere, 400 volts

1

ampere, 400 volts

1

ampere,

1

ampere, 400 volts

1

ampere, 400 volts

1

ampere, 400 volts

1

ampere, 400 volts

400

400 400 400 400

400

RTS PART NUMBER

9040-3000-09

volts volts

volts volts volts volts volts

volts volts

volts

Page 6-11

TECHNICAL

Model

PRINTED CIRCUIT ASSEMBLY, SWITCH BOD, cont'd

848A

Matrix Intercom Station/Model DC848 Data Concentrator

MANUAL

REF#

S901-S932

6.11

PRINTED CIRCUIT ASSEMBLY, REF# PC1

OTY

32 41

_QTY

1

1 1

DESCRIPTION Diode, IN4004

Diode, IN4004 Diode, IN4004 Diode, IN4004 Diode, Motorola MR502 Lamp, 18 volt, JKL PIN 8099SBP Header, 10-pin, Berg P/N 65611-410 Connector, 3-pin wafer, Molex P/N 09-65-1031

Switch, momentary lighted pushbutton EAO PIN 99-456 Switch lens holder gray EAO PIN 99-920.8 Coupliig piece, EAO PIN 99-910

DESCRIPTION Printed Circuit Board Capacitor, ceramic disc radial, 10pF\50 volts

Capacitor, ceramic mono radial, .luF/50 volts Capacitor, tantalum radial, 1.0uF/16 volts Capacitor, ceramic mono radial, .luF/50 volts Capacitor, tantalum radial, 1.0uF/16 volts Capacitor, ceramic mono radial, .luF/50 volts Capacitor, tantalum radial, 1.0uF/35 volts

Capacitor, ceramic mono radial, .luF/50 volts

1

ampere,

1

ampere,

1

ampere,

1

ampere,

CPU

400

volts

400

volts

400

volts

400

volts

BOARD, 9030-5381130

RTS PART NUMBER

J905-J908

Q1

1

1 1

1

1 1 1 1

Diode, signal, IN4148 Diode, 1 ampere,

Header, I0 pin, Berg PIN 65610-410 Socket strip, 10 position, Samtec PIN SEP-10758-02

Header, 10 pin, Berg P/N 65610-410 Transistor, ZN5210 NPN Resistor, carbon

Resistor, carbon film Resistor, carbon film Resistor, carbon film 4 watt, f5%, 2.2M ohm Resistor, carbon fdm Resistor, carbon fdm 4 watt, +5%, 2M ohm Resistor, carbon Resistor, carbon film 4 watt, f5%, l00K ohm Resistor, carbon fdm 4 watt, +5%, Resistor, carbon film 4 watt, +5%, 750K ohm

400

volts, IN4004

film

fi

watt, f 5%, 10K ohm

fi

watt, +5%, 10 ohm

fi

watt, f5%, 10K ohm

fi

watt, +5%,

film

#

watt, f 5%, 2.2K ohm

Page 6-12

4.7K

240

ohm

Model

TECHNICAI,

848A

Matrix Intercom Station/Model DC848 Data Concentrator

MANUAL

PRINTED CIRCUIT ASSEMBLY, CPU BOARD,

REF#

-

1

1 1

1

1 1 1 1 1 1

DESCRIPTION RTS PART NUMBER Resistor,

Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resistor, carbon Resiistor, carbon

Switch, dip, 5 position, Amer Research PIN K405-S Integrated circuit, 74HCO4, National

Integrated circuit, 63A03RP, Hitachi Integrated circuit, 4047 Integrated circuit, 74HC573 Integrated circuit, 74HC139 Integrated circuit, 27C256 Integrated circuit, voltage regulator, National LM317 Integrated circuit, HM6264LP-15 Integrated circuit, MC14021 Integrated circuit, UCN5821A Integrated circuit, 75176

carbon

film f watt, f 5%, 10K ohm film f watt, f 5%, l00K ohm film 4 watt, f5%, 10K ohm film f watt, f5%, l00K ohm film 4 watt, +5%, 10K ohm

film f watt, f 5%, l00K ohm

film 4 watt, 95%, 10K ohm film f watt, f5%, l00K ohm

fh

4

watt, f 5%, 10K ohm film 4 watt, f5%, film 4 watt, f 5%,

cont'd

10

22K

ohm

I1

1

I

i

I

L-

J

W1

Y1

XU1 XU2 2 xu3 XU4 XU5 XU6 XU7 not used XU8 xu9-xu21 XU~~-XU~~

6.12

PRINTED

REF# PC1

J501

C501-C502 2 Capacitor, ceramic mono radial .luF/5Ovolts

1

1 1 1

1

gTY

1 1

Jumper, .2 Crystal, 4.9152 megahertz, Fox PIN 049 3301-0005-00 Integrated circuit socket, 14 pin, Burndy DIL PIN DIL14P-108

Integrated circuit socket, 40 pin, Burndy DIL PIN DILAOP-108 Integrated circuit socket, 14 pin, Burndy DIL PIN DIL14P-108 Integrated circuit socket, 20 Integrated circuit socket, 16 pin, Burndy DIL PIN DIL16P-108 Integrated circuit socket, 28 pin, Rob/Robion nugent PIN 1CT-286-S-X2001-0037-00

Integrated circuit socket, "smart", Dallas Semi PIN DS1213 Integrated circuit socket, 16 pin, Burndy DIL PIN DIL16P-108 Integrated circuit socket, 8 pin, Burndy DIL P/N DILSP-108 Heat Sink,

CIRCUIT ASSEMBLY, ADJUSTMENT BOARD,

DESCRIPTION Printed circuit board

Header 20-pin right angle 3M PIN 3428-1202

in.,

AP

AHAM,

products PIN 922345-02 2515-0004-02

pin,

Burndy DIL PIN DIL20P-108

362

PIN 7-362-BA

Page

6-13

2001-0002-00 2001-0017-00 2001-0002-00 2001-0036-00 2001-0003-00

2001-0035-00

2001-0003-00

2001-0001-00 4502-0003-00

9030-4810-00

RTS PART NUMBER

Model

TECHNICAL

848A

Matrix Intercom Station/Model

MANUAL

DC848

Data Concentrator

PRINTED

REF#

CIRCUIT ASSEMBLY, ADJUSTMENT BOARD,

mY

DESCRIPTION RTS PART NUMBER

cont'd

R501-R502 2 Pot 10K ohms linear Piher P/N PTClOLvplOK R503-R504 R505 R506-R510

5501

6.13

PRINTED

REF# PC1

.

2 1

5

1

(see

LTY

1

Pot

20K

Pot 10K ohms linear Piher PIN PTClOLvplOK Pot 20K ohms audio Piher PIN PTlOyu20Klog

Header 20-position, right-angle 3M PIN

CIRCUIT ASSEMBLY, LISTEN SELECT MATRIX BOARD, 9030-4320-00

Drawing

DESCRIPTION RTS PART NUMBER

Printed circuit board 9040-4320-00

4 Standoff, 4-40 x

ohms audio Piher PIN PT1OyvU)Klog

AS4320)

"

Amatom PIN 9533B-B-0440 1001-0112-00

3428-1202

2 Standoff, 4-40 x 3/16" Amatom PIN 9532B-B-0440 1001-0113-00 5401 5402-5403

R401-R449

1

2

48

5501-5524 24 Header, 6-pin single row,

50 pin connector, Male Amphenol

TRW

Cinch PIN 57-10500-27 2008-0010-00

Header, %-pin, Berg PIN 65610-426 2007-0035-00 Resistor, metal

film

watt, + 1% 3.01K ohm 1403-3011-2D

AP

Products PIN 929647-01-06 2007-0097-00

2007-0095-00

6.15

CABLE ASSEMBLIES

REF#

6.15A

EY

1

6

2

1

2

1

6.15C

1

2

1

6.15D

1

2 Connector, 14-pin female with S.R., Berg PIN 66900-014

1

DESCRIPTION RTS PART NUMBER Cable assembly, 3 conductor, as per drawing AS5368

Connector, pin crimp female, Molex PIN 08-50-0106

Connector, 3-pin female, Molex P/N 09-50-3031 Wire, 18 awg, black Teflon Wire, 18 awg, red Teflon stranded

Cable assembly,

Connector,

20

conductor

20

position with S.R., Berg PIN 66900-020

as

per drawing AS5370

Ribbon cable, 20 conductor, Spectra PIN 8431352801020 Cable assembly,

26

conductor as per drawing AS5371-1

9020-5371-01 Conductor, 14-pin female w/Strain Relief, Berg P/N 66900-014 2007-0037-00 Connector, %-pin female, 3M PIN 3399-6026 Cable, %-pin flat, Spectra PIN 8431352801026

Cable Assembly, 26 conductor,

as

per drawing AS5371-2

2008-0033-00

2501-0011-00

9020-5371-02

2007-0037-00 Connector, 26-pin female, 3M 3399-6026 Cable, %-pin flat, Spectra PIN 8431352801026

2008-0033-00

2501-0011-00

Page 6-14

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station/Model DC848 Data Concentrator

CABLE

REF# DESCRIPTION

6.m

6.D

6.sG

6.a5H

6.151

6.155

ASSEMBLIES,

1

1 1 1

1

2

1 1

2

1

2

1 1

2

1 1

2

1

Cable assembly, serial connector Connector, 10-pin, 3M PIN 34736010 Connector, 9-pin D female, Amphenol PIN 84117DEFRA9S Connector,.9-pin Cable, 10 conductor, Spectra PIN 8431352801010

Cable Assembly, 5305 to 5905 Connector, 10-pin, 3M PIN 3473-6010 Cable, 10 conductor, Spectra P/N 8431352801010

Cable Assembly, 5306 to 5906

Connector, 10-pin, 3M PIN 3473-6010 Cable, 10 conductor, Spectra P/N 8431352801010

Cable Assembly, 5307 to 5907

Connector, 10-pin, 3M PIN 3473-6010 Cable, 10 conductor, Spectra P/N 8431352801010

Cable Assembly, 5308 to 5908 Connector, 10-pin, 3M PIN 34736010 Cable, I0 conductor, Spectra P/N 8431352801010

Cable Assembly, 9107 to 5607 Connector, 10-pin, 3M PIN 3473-6010 Cable, I0 conductor, Spectra PIN 8431352801010

(Continued):

as

per drawing AS5587

"D"

Male Amphenol PIN 84117DEFRA9P

RTS PART NUMBER

i

L

'

i

6.1%

6.15

POWER SUPPLY ASSEMBLY,

REF#

1

2

1

2

1

QTJ

1 1

Cable Assembly, 5108 to 5608 Connector, 10-pin, 3M PIN 3473-6010 Cable, 10 conductor, Spectra PIN 8431352801010

DESCRIPTION RTS PART NUMBER Jack, 4-conductor female, Calrad PIN 30-453 U)13-0016-00

Power Supply, 12 volts AC,

9020-4979-00

3.3

9020-5599-00

2007-0038-00

2501-0012-00

amps, Condor PIN WP664012CG 2202-0019-00

Page

6-15

MODEL DC848

Model

mcmcAL

848A

Matrix Intercom Station/Model DCS48 Data Concentrator

lwAwAL

MODEL DCMS

6.16

BACK

6.17

REF#

PANEL

QTJ

FINAL

DESCRIPTION Power supply assembly

Front panel Side panel Bottom cover Top cover

Screw, 8-32 Screw, 8-32 x

Screw, 6-32 x Screw,

Printed circuit assembly, UMC-100 Back panel assembly

ASSEMBLY, MODEL DCS48,

DESCRIPTION Nut, kep,

Jack socket assembly

Strain relief, Dennison

Tie wrap

Solder lug, Fuse holder Fuse carrier

Fuse, Connector, Cpin, male, Calrad Connector, 25-pin D, solder cup, Calrad PIN 30-552A Connector, 9-pin male D, solder cup, Calrad PIN 30-550A Connector, 9-pin female D, solder cup, Calrad PIN 30-560A Connector, 3-pin, Molex Crimp pin, Molex Connector, 3-pin, Panduit Connector, Spin, Panduit P/N CE100FQ4-5 Bead, ferrite, Mouser PIN 542-FB43-287 Bead, ferrite, Mouser P/N 542-FB73-287 Shrink tubii 118" Wire, 24 AWG, black Wire, Wire, Wire, 24 AWG, orange Wire, Wire, Wire, Wire,

ASSEMBLY,

xz

3/8",

1000 flat head, phillips, black

3/8",

pan head phillips, gold

4,

pan head phillips, gold

4-40

x

4

4-40

#4

4

ampere, slow-blow

24

AWG, brown

24

AWG, red

24

AWG, yellow

24)

AWG, black, Teflon

U)

AWG, red, Teflon

20

AWG, green, Teflon

9010-5556-00

9020-5553-00

PIN CE100F24-3

RTS PART NUMBER

1 1 1

Cover, 3 pin, Panduit P/N EC100F-3 Cover, 5 pin, Panduit PIN EC100F-5 Shrink tubing, 5/16" diameter, clear

Page 6-16

Model

TECHNICAL

848A

Matfix Intercom StationIModel

MANUAL

DC848

Data Concentrator

PRINTED

6.18 REF# DESCRIPTION

Cl-c2

C3

C4-C5 C6-C7

C8-C23

C24-c27 C28-c29

Dl-D2 D3 D4 D9D8

CIRCUIT

1 1 1

1

1 1

1

1 1

1

1 1

1 1 1

1 1

BOARD

Printed circuit board Resistor, carbon film, 4 watt Resistor, carbon film, % watt 95%, 1Oohm Resistor, carbon film, 4 watt &5%, 1OKohm Resistor, carbon film, 4 watt Resistor, carbon film, watt Resistor, carbon film, 4 watt Resistor, carbon film, 4 watt Resistor, carbon film, 4 watt +5%, lOKohm Resistor, carbon film watt 45%, 4.7Kohm

Resistor, carbon film,

Capacitor, mono, radial, .luF/50 volts Capacitor, electrolytic radial, lWuF/16 volts Capacitor, ceramic Capacitor, tantalum, 1.0uF116 volts Capacitor, mono, radial, .luF/50 volts Capacitor, tantalum, 22uF116 volts Capacitor, mono, radial, .luF/50 volts

Diode, 1N4004, rectifier, 1 ampere, Diode, 1N414B Diode, lN4004, rectifier, 1 ampere, Light Emitting Diode (LED), red, super brite Stanley PIN ESBR3431

ASSEMBLY,

UMC-100

2

5

45 25%, 45%, 45

);I

-i

watt +5%, lOKohm

disc,

radial, 10pF150 volts

%

,

lOKohm

%,

l00Kohm

2.2Mohm 7500hm

%,

l00Kohm

400

9030-5555-00

RTS PART NUMBER

volts volts

J1 52

J3 2 Header, 3 pin, Panduit PIN HLSS100-3 J4-J7' 58 2 Header,

Q1

1

Header, 10 pin, Panduit PIN HLSS100-10

Header, 5 pm, Panduit PIN HLSSlOO-5

Header, 10 pin, Panduit PIN HLSS100-10

3

pin, Panduit PIN HLSS100-3

Transistor, 2N5210, NPN

Page 6-17

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station/Model DCXW Data Concentrator

PRINTED CIRCUIT BOARD ASSEMBLY, UMC-100,

DESCRIPTION itegrated circuit, 75176

Integrated circuit, 74HCO4, hex inverter htegrated circuit, LM317CI', vsltage regulator Integrated circuit, 63A03R Integrated circuit, 74HCOO,quad 2-input NAND gate :ntegrated circuit, 4047 Integrated circuit, 74HC573 Integrated circuit, 74HC139

integrated

circuit, 27C256 Integrated circuit, HM6264 Integrated circuit, 74HCl39

integrated

circuit, 74HC574 :ntegrated circuit, 634950 :ntegrated circuit, 74HC574 :ntegrated circuit, MC14526 Integrated circuit, 74HC574 Integrated circuit,

MAX232

Integrated circuit, 74HC574 Zrystal, 4.9152 megahertz [ntegrated circuit socket,

[ntegrated circuit socket,

8

pin, DIL8P-108

8

pin, DIW-108 [ntegrated circuit socket, 14 pin, DIL14P-108 [ntegrated circuit socket,

40

pin, ICT-406-S-X htegrated circuit socket, 14 pin, DIL14P-108 htegrated circuit socket, 14 pin, DIL14P-108 htegrated circuit socket, 16 pin, DIL16P-108 Integrated circuit socket,

28

pin, ICT-286-S-X :ntegrated circuit socket, Smart PIN DS12l3 :ntegrated circuit socket, 16 pin, DIL16P-108 Integrated circuit socket, :ntegrated circuit socket, :ntegrated circuit socket, Integrated circuit socket,

20

pin, DILlMP

24

pin, ICT-246-S-X

20

pin, DIUP

20

pin, DILUlP :ntegrated circuit socket, 16 pin, DIL16P-108 :ntegrated circuit socket, 20 pin, DIL20P :ntegrated circuit socket, 16 pin, DIL16P-108 :ntegrated circuit socket, 20 pin, DIL20P

(Continued):

RTS PART NUMBER

1603-0107-00 1603-0056-00

1603-0125-0T

1603-0126-00 1603-0055-00 1603-4047-00 1603-0110-00 1603-0111-00 1603-0112-00 1603-0123-00 1603-0111-00 1603-0121-00 1603-0122-00 1603-0121-00 1603-0124-00 1603-0121-00 1603-0119-00

1603-0121-00 3301-0005-00 2001-0001-00

2001-0001-00 2001-0002-00 2001-0017-00 2001-0002-00 2001-0002-00

2001-0003-00 2001-0037-00 2001-0035-00 2001-0003-00 2001-0036-00 2001-0016-00 2001-0036-00

2001-0036-00 2001-0003-00 2001-0036-00 2001-0003-00 2001-0036-00

DC848 POWER SUPPLY ASSEMBLY,

6.19

REF#

QTJ

1 1

DESCRIPTION Jack, 4 conductor female, Calrad PIN 30-453 2013-0016-00

Power Supply, 12 volts ac, 3.3 amperes, Condor

9020-4979-00

Page 6-18

P/N

WPW12CG

RTS PART NUMBER

2202-0019-00

TECHNICAL MANUAL

SECTION

RTS Svstems Document

Number

7:

Model 848A

DRAWINGS

rn

Final Assembly. Model 848A Final Assembly. Front Panel. 848A Final Assembly. Rear Panel. 848A Final Assembly. Sub.Chassis. 848A 7-5 Assembly Diagram. Mother Board. page 1 of 2 Assembly Diagram. Mother Board. page 2 of 2 Assembly Diagram. Switch Board 7.7 Assembly Diagram. CPU Board Assembly Diagram. Adjustment Board

Assembly Diagram. Listen Select Schematic Diagram. 848 Mother Board. pg

Schematic Diagram. 848 Mother Board, pg . 2 of 7 Schematic Diagram. 848 Mother Board, pg 3 of 7 Schematic Diagram. 848 Mother Board, pg 4 of 7 Schematic Diagram. 848 Mother Board, pg . 5 of 7 Schematic Diagram. 848 Mother Board, pg 6 of 7 Schematic Diagram. 848 Mother Board, pg 7 of 7 Schematic Diagram. 848A Mother Board. pg Schematic Diagram. 848A Mother Board. pg 2 of 7 Schematic Diagram. 848A Mother Board. pg 3 of 7 Schematic Diagram. 848A Mother Board. pg . 4 of 7 Schematic Diagram. 848A Mother Board. pg 5 of 7 Schematic Diagram. 848A Mother Board. pg 6 of 7 Schematic Diagram. 848A Mother Board. pg . 7 of 7 Schematic Diagram. Switch Board 7.25 Schematic Diagram. CPU Board. pg Schematic Diagram. CPU Board. pg 2 of 4 Schematic Diagram. Schematic Diagram. Schematic Diagram. Adjustment Board

Schematic Diagram. Listen Select

Matrix

Intercom Station / Model DC848 Data Concentrator

Model

848A

............................

.........................

..........................

.........................

....................

...................

..........................

...........................

.......................

Matrix

...................

Board

.

.................

1

of 7

.................

.

.................

.

..........

.................

.

. .

................

1

of 7

................

.

................

.........................

.

1

of 4

....................

.....................

CPU

Board. pg . 3 of 4

CPU

Board. pg 4 of 4

.

. .....................

.......................

Matrix

..................

Board -7-31

......

.'

7-2

-7-3 7-4

7.6

7-6a

7.8

-7-9

7.10 7-11

7-12 7-13

7-14 7-15 7-16

7-17

.7 .18

-7-19

-7-20 .7 .21

-7-22

-7-23 .7 .24

.7 .26 .7 .27

7.28

7.29

7.30

Wiring Diagram. Model 848A Wiring Diagram. Model 848 for CPU

Final Assembly. DC848 Rear Panel Diagram. DC848 Assembly Diagram. PCB. DC848

Schematic Diagram. DC848. pg Schematic Diagram. DC848. pg Schematic Diagram. DC848. pg . 3 of 3 (early version)

WiringDiagram. DC848 Wiring Diagram. RS422 cable. DC848. pg 1 of 2 Wiring Diagram. RS422 cable. DC848. pg . 2 of 2

...........................

........................

Model

DCS4S

..............................

............................

......................

.

1

of 3

...................

.

2 of 3

...................

..............................

.

Page 7-1

..................

7.36. 7.36a .7.37. 7.37a .7.38. 7.38a

...............

7-32

7.33

-7-34

7.35

7-39 7-40

7-41 7-42

REF

TECHNICAL MANUAL

Model 848A Matrix Intercom Station/

Model DC848 Data Concentrator

PLCS

8.

INSTALL TOP( ITEM 18) USlNG ITEM 8(4

7.

ADJUST AND TIGHTEN FRONT PANEL OF ADJUSTMENT

6.

INSTALL ALL C&LE ASSEMBLIES AND PLUG IN ALL CONNECTORS.

5.

INSTALL ITEM 4 USlNG ITEMS lOLl l(4 PLCS),& ITEM 8(2 PLCS).

4. INSTALL BOTTOM(ITEMI~)TO ITEM

@PLACE

2.

ASSEMBLE ITEM I TO ITEM 2 USlNG ITEMS

I. ASSEMBLE ITEMS

ASSEMBLY

SING

WIRING DIAGRAM WD5545,FOR REF.

ITEM

5

INTO

SLOT

3&6

INSTRUCTIONS

OF

ITEM

TO ITEM 2 USlNG ITEM 10(4

PLCS).

5

USlNG ITEM

3.

SEE

:

8(8

ABOVE

8,9 L 12.

PLCS).

VIEW.

Final Assembly, Model

BD,

ITEM

PLCS).

AS5545

3.

848A

Page

7-2

12

/"

4

TECHNICAL MANUAL

Model 848A Matrix Intercom Station/

Model DC848 Data Concentrator

PLCS

Ad;E

ACRIMP

3.

ATWIST

31"IG

AL5587

TO

MAKE CABLE

TERMINALS USING MOLEX HTR-2445-A HAND TOOL

ALL DIMENSIONS ARE IN INCHES.

WIRES

AFTER

AS~Y.

I.

SEE WIRING DIAGRAM WD5545 FOR

N.OTES

:

45SY

REF.

(ITEM

25)

DETAIL-A- SCALE

TYP OF

10

I/

1

PLCS

AS5542

Final Assembly, Model

7-4

Page

848A

Rear l'anel

TECHNICAL

MANUAL

Model

848A

Matrix Intercom Station/

DC848

Data Concentrator

MOTHERBOARD

SS4706

REVC

AS4706

Assembly Diagram, Model 848A Mother Board

Page

1

of

2

Page

7-6

DETAIL-A-

SCALE

=NONE

TECHNICAL MANUAL

Model 848A Matrix Intercom Station/

Model

DC848

Data Concentrator

SEE

DETAIL-A-

J90J-J908

AS3000-09

Assembly Diagram, Model

Page

7-7

848A

Switch

Board

Model

TECHNICAL

848A

Matrix Intercom Station / Model

MANUAL

DC848

Data Concentrator

Assembly

~5381'

Diagram,

Page

Model

7-8

848A

CPU

Board

I'm-

;-

?

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station / Model

DC848

Data Concentrator

2

HOLE..

OFF.

FOR PART

PARTS

FOR

S50/

ARE

TO

BE

J€€

MAS/CED

SEPARATE

(12

/iOLE5>

NO.

LIST

9030-4810-00.

4

DESCRIPTION

AS4810

Assembly Diagram, Model 848A Adjustment Board

Page

7-9

Model

TECHNICAL MANUAL

848A

Matrix Intercom Station/Model

DC848

Data Concentrator

Lrs

J402,

,NS7ALL€D

SECURE

BEFORE

SCKaER

B

ITAAIDW-

2.

SWAGE

I.

NOTES

IN

FOR

PART

PARTS LIST 9030-4320-00.

:

Y,mI-oII,-oo

2

PLACES

J403

hf

340,

TO

MW

~HREADED

NO.

6

0€5CR/PT/OIV

MARKED

4

R40/

/%A?,

STANDOFFS

OPEhHTION-

BE

/mrAuED

STANW~J

nn

TW

OF

w/rH

S€d

"B'

R448

BLUUZ~

c

Y

MARKED

JEPAHATE

ARE

4

-40

5a1.

51

48:

LRTS Y /m,-0112-00

4

PLACES MARKED

x

//4

SMEM

'A"

Assembly Diagram, Model

AS4320

848A

Listen Select Matrix Board

Page

7-10

TBt

TB-

-

+b

-

TALK

SWITCHING

TBt

TB-

Ill

+L

Model

TECHNICAL

848A

Matrix Intercom Station/

DC848

MANUAL

Data Concentrator

\

LB

HI

(LISTEN

(SHEET

LBLO

BUS)

5)

SD4706

Schematic Diagram, Model 848 Motherboard

Page

1

of

7

TB+

TB-

+I.

Ill

TALK

SWITCHING

Tat

TB-

+h

TECHNICAL

MANUAL

Model 848A Matrix Intercom Station/

Model DC848 Data Concentrator

ATBH

(ALL

HTBL

TALK

(JHEET

BUS)

5)

SD4706

Schematic Diagram, Model

Page

848

Motherboard

2

of

7

Page

7-12

TALK

SW/

T%H/NG

TECHNICAL

MANUAL

Model 848A Matrix Intercom Station/

Model DC848 Data Concentrator

(SWITCH

TW2

(LAMP

WITCH

ALL

(LAMP

27)

TALK

27)

29)

7ALK

29)

J308-3

J304-3

J308-4

J304-4

J308-L

1~4b04

-

D32L

N

IN4004

a

D327

IN4004

1\1

VI

IN4004

YNI

03 74

IN4004

0375

rU

0377

L,

R

326

R327

R

328

...

Z2K

-

>

LI

(LI~TEAI

TZ

(TALK

ALL

(ALL TALK)(~H

SW,CHI)

SW

CN

2)

5)

(5~13)

(-5~

I)

SD4706

Schematic Diagram, Model 848 Motherboard

Page

3

of

7

Page

7-13

'FACE

TECHNICAL MANUAL

Model

848A

Matrix Intercom Station/

Model DC848 Data Concentrator

LAST

USED

:

R139,

CIIP,T/02,U/04

6.7.8

Schematic Diagram, Model 848 Motherboard

SD4706

of

Page 4

Page

7

7-14

RTS 848A, DC848 Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual