Manual / Guide · 1967
ASR description (573-101-100TC: punches, four TD designs, K/K-T/T modes), installation (573-101-200TC), operating instructions, cross-reference, wiring
( (" ( BULLETIN 312B NAVSHIPS 0967-173-6010 VOLUME 1 (of 3 Volumes) TECHNICAL MANUAL28 AUTOMATIC SEND-RECEIVE (ASR) TELETYPEWRITER SETS ( ( TELETYPE® CORPORATION ( 5555 TOUHY AVENUE, SKOKIE, ILLINOIS ( SEE INDIVIDUAL SECTIONS FOR COPYRIGHT NOTICES. PRINTED IN u.s.A. (.... CI.J• .., .., J J 312B NAVSHIPS 0967-173-6010 Original, July, 1967 (' VOLUME 1 TABLE OF CONTENTS ( Title Section Issue General Cross Reference Information 573-101-000TC 1 Description Installation of Component Units Operating Test Disassembly and Reassembly 573-101-100TC 573-101-200TC 573-101-500TC 573-101-702TC 1 1 1 1 28 Teletypewriter Cabinet for ASR Sets Description 573-134-101TC 1 28 Electrical Service Unit Description and Principles of Operation 573-133-100TC 1 28 PerforatorTransmitter Base Description and Principles of Operation 573-117 -100TC 1 28 Typing Unit Description and Principles of Operation 573-115-100TC 1 28 Typing and Nontyping Perforator Description and Principles of Operation 573-139-100TC 1 28 Transmitter Distributor Base Description 573-128-100TC 1 28 Transmitter Distributor Unit (LXD) Description and Principles of Operation 573-127-101TC 1 28 Typing Reperforator Description and Principles of Operation 573-118-100TC 1 Description 573-121-101 TC 1 Description and Principles of Operation 570-220-100TC 3 Component Wiring Diagrams 573-101-400TC 1 28 Automatic Send-Receive (ASR) Teletypewriter Sets for U. S. Navy ( { ( 28 Automatic Send-Receive (ASR) Teletypewriter Set 28 Auxiliary Typing Reperforator Base Motor Units ( ~ Contents 28 Automatic Send-Receive (ASR) Teletypewriter Sets for U. S. Navy TELETYPE CORPORATION Skokie, Illinois, U.S. A. ( SECTION 573-101-000TC Issue 1, May, 1967 28 AUTOMATIC SEND-RECEIVE (ASR) TELETYPEWRITER SETS FOR U. S. NAVY GENERAL CROSS REFERENCE INFORMATION ( 1. GENERAL 1. 01 This section provides a listing of Automatic Send-Receive Teletypewriter Sets being used by the U. S. Navy. 1.02 The component units included in the various sets are cross referenced with respect to Navy codes and Teletype codes in chart that follows. ( 2. ATTACHMENT: ASR COMPONENT CROSS REFERENCE CHART ( ( ( ( Printed in U. S. A. Page 1 1 Page and Attachment ~ ~~~ Cl p::<Q rnZU < rJ:J ASR COMPONENT CROSS REFERENCE CHART SUBJECT NAVY DESIGNATION OF DESIGNATION MANUFACTURER WIRING DIAGRAM NUMBER ISSUE :X: :X: :X: < :X: :X: :X: :X: :X: :X: Lntn <:.0 <:.0 co :X:<<COUCl .-I :X: cococococococo :X:<< p:) u Cl ~~~c.:> ::z:: ~ ~ ~ ...::l 1:-t:X:<<tP=lCOU .-I .-I .-I .-I Ln :..'') Ln Ln Ln Ln Ln <:.0 <:.0<:.0 <:.0 <:.0 <:.0 <:.0 <:.0 C.O<:.O c.o c.o c.o c.o c.o c.o l I l I I I I I I I I uu u u u u u uu u u u u g g ~g c.:>00000t:l 0t:l t:lt:l uuuguuu u 0 0 0 0 0 0 t:l 0 t:lO t:l 0 0 0 I l uuuouuu uu uu g R·OOOPPPPOPPP~~~~ oooooo_~ ..................................................................... '-.. ................. ~~~~~~~ zZ. s~ zz z I I I t:lt:lt:l I I I I I I I I I l l I I I I I I l l 000 ·z-z-z-z-z-z-z <zzzzzzzzzzzzzzzz << < < < < < <<t < < <t < < < < < < < < < < ~~ zzzzzzz go s <<<<<-<< << -<< < xxxxxxx xxxxxxxxxxxxxxxx XX XX XX XXX CY-2529/UG LAAC 200 20 3264WD-A XX XX X CY-3082/UG LAAC 237 20 3264WD-A XX XX X xxxx XX xxxxxx SB-959/UG 3292WD-A, 3294WD-S 19,24 xxxx LESU 13 XX X XX XXX XXX XXX xxxx LESU 12 SB-1061/UG 3344WD-A,3343~-S K, p XX ELECTRICAL SERVICE UNIT SB-1302/UG LESU 73 4385WD-A, 4386WD-S B, C xxxx SB-2611/UG LESU 96 5930WD-A, 5931WD-S OR, A XXX xxxxxxxxxx XXX SB-2680/UG LESU 111 7015WD-A 7016~-S 5 3 xxxxxx xxxx 17 MX-2643/UG LAK 4 ARN 3302WD-A XX xxxx 17 MX-2858/UG LAK 4 ARE 3302WD-A XX XX K2 LAK 31 ARN 4927WD-A TT-371/UG X KEYBOARD BASE K2 TT-377/UG LAK 31 ARE 4927WD-A xxxx XXX XX XXX 4 TT-433/UG LAK 42 ARN 6456WD-A XXX 4 LAK 42 ARE 6456WD-A TT-440/UG X 6456WD-A 4 TT-475/UG LAK 46 ARN X XX 44 MX-1115B/UG LP14RN/AY 3214WD-A XX XX XX 3214WD-A 44 MX-1422A/UG LP14RE/AY X XX XX 3214WD-A 44 MX-2984/UG LP14RN/AGH XX 44 3214WD-A TT-325/UG LP14RN/AHF XX X 44 3214WD-A TT-372/UG LP108RN/AY X TYPING UNIT D TT-374/UG LP108RN/AGH 3813WD-A X 44 TT-378/UG LP108RE/ACX 3214WD-A XX 44 3214WD-A TT-400/UG LP14RE/ACX X X 3813WD-A TT-436/UG LP14RN/AJE D xxxx XX XXX 44 3214WD-A TT-437/UG LP14RN/AJG XXX 44 TT-441/UG LP14RE/AJG 3214WD-A xxxxxxxxxxxxxxxx 21 TT-266(UG 3628WD-A LPR9/AWA xxxxxxx 21 TT-267/UG 3628WD-A LPR9/ARE XX XX 3628WD-A 3567WD-S 21,13 TT-373/UG LPR51/BWA XX 21 TYPING REPERFORATOR 3628WD-A TT-375/UG LPR52/BWA X TT-379/UG 3628WD-A 3567WD-S 21, 13 LPR51/BRH X 21 3628WD-A TT-380/UG LPR52/BRH xxxx XX XXX MT-2234/UG LRB 6 3590WD-A,3591WD-S 4, 9 XX X LRB 42 3591WD-S 9 MT-2272/UG XX xxxx xxxxxx 9 REPERFORATOR BASE 3591WD-S MT-2625/UG LRB 36 X X 3591WD-S 9 MT-3369/UG LRB 51 XX xxxx xxxxxx G xxxx 3300WD-A TT-251/UG LXD 3 TRANSMITTER XX XX xl 4264WD-A 9 TT-311/UG LXD 11 DISTRIBUTOR XXX xxxxxxxxxx XXX 3300WD-A G TT-439/UG LXD 27 TRANSMITTER xxxxxxx xxxxxxxxxxxxxxxx XX XX XXX XX MT-2099/UG LCXBl -XX XX X 4265WD-A DISTRIBUTOR BASE c MT-2452/UG LCXB13 XX X XX X X XX X X 42 X X xxxxx 2900WD-A PD-17A/U LMU 3 X X 42 X X X 2900WD-A PD-18/U LMU 4 X 42 LMU 41 2900WD-A PD-18A/U XX X X X XX X XX X X 42 X XXX XX X 2900WD-A X LMU 12 X X PD-67 /U X X X X X X 42 X X 2900WD-A MOTOR UNIT X LMU 14 X PD-77/U X X 42 2900WD-A X LMU 39 PD-77A/U X X 42 2900WD-A PD-108/U LMU 38 X X 42 2900WD-A PD-111/U LMU 50 6 XX 5830WD-A&S PAPER WINDER LPW 300 RL235/UG X XX XXX XX xxxxxxxxxxxxxxxx PERFORATOR LTPElAWA TT-252/UG XX XX XX XXX TRANSMITTER LTPE1ARE TT-265/UG FF AAAGBBE HH HH H AAAADDBBBBBEBBBB E-161859, 161860, 161861, ACACBBB A-161859, 161860, 161861 G-160677, 161859, 161861 159660, 159700, 305577, GEAR SETS B-161859, 161861, 163300 H-163454, 163457, 163499, 305579 C-164583, 164584, 164585 163502, 163504, 163505; 173776, 173795, 173992 D-163300, 164~3, 164~~Q_ _ __ _ _F_-160675, 1606~, 160677 ___ CABINETS ! J TELETYPE CORPORATION Skokie, lllinois, U.s. A. SECTION 573-101-100TC Issue 1, May, 1967 28 AUTOMATIC SEND-RECEIVE (ASR) TELETYPEWRITER SET DESCRIPTION CONTENTS CONTENTS PAGE PAGE 1. GENERAL . . . . . . . • • • . • . . . • • • • 1 TYPING UNIT RIBBON. . • . • • . . . • 11 2. CONFIGURATION•.•.••••.••.•• 4 TYPING lJN"IT PAPER (FRICTION FEED). • . . . . • • . . . . . 11 3. COMPONE NTS ••••••••••.••••• 4 TAPE SPECIFICATIONS . • . • . . . . . 11 TYPIN"G lJN"IT •••.••••••• ••••• 4 PRINTED CHARACTERS (TAPE}... 11 ~1[13())\Itl), • • • • • • • . . . • . • • • • • 4 TAPE PUNCH UNITS .•••••••.•• 4 TRANSMITTER DISTRIBUTORS ••.. 5 ELECTRICAL SERVICE UNIT ••••• 5 MOTOR UNITS ••••••.•••.••.. 5 CABIN'ET . . . • . . . . • . . . • . . • . . . 5 4. VARIABLE FEATURES • . . • . . . . . . 6 5. OPERATION ••.••.•• ••..•••.• 6 GENERAL OPERATION . . . . . . • . . 6 SELECTIVE CALLING . . . . . . . . . . 9 TECHNICAL DATA . . • . . . . . . . . . 9 SIGNAL REQUIREMENTS ....•••. 9 POWER REQUIREMENTS (TYPICAL) . • . . . . . . . . • . • . . . . . 9 OPERATING SPEEDS . • . . . . . . . . . 9 APPROXIMATE DIMENSIONS (INCHES} . . . . . . . . . . ...••..•• 9 APPROXIMATE WEIGHT (POUNDS) .•.•.•••.•.•••. • ••• 9 PRINTED CHARACTERS (TYPING UNIT) ••.•••.•••••••. 10 Messages are received electrically via the transmission fa cility and are pr inted on page-size copy paper or continuous business forms . With page-printed monitoring, the ASR Set can electric:ally transmit messages which are originated by either perforated tape or keyboard operation. Messages may be perforated and printed on tape for separate transmission with or without simultaneous transmission and page-printed monitoring. PLATENS . • . . . . . • . • • • . . • • . . • 10 1.04 SPROCKET FEED PLATENS . . . . . • 10 1. GENERAL 1.01 This section describes the general configuration and capabilities of the 28 Automatic Send-Receive (ASR} Teletypewriter Set. It includes a brief description of the ASR Set components, which are covered in detail in separate sections, the important variable features, a general description of operation, and the appropriate technical data. Because of the many variations possible, the ASR Set described in the text and illustrations is typical. 1.02 6. The 28 ASR Set is an electromechanical apparatus capable of operating as a selfcontained message originating and receiving center. It is used to exchange printed and tape perforated messages between two or ;nore stations connected by appropriate transmission facilities (telegraph lines, telephone networks, and radio channels} (Figures 1 and 2). • 1.03 Certain ASR Sets are equipped to receive messages in printed and perforated tape form and, at the same time, prepare tape off-line. © 1967 by Teletype Corporation All rights reserved. Printed in U. S. A. Page 1 SECTION 573-101-100TC ACCESSORY CONTROL PANEL TAPE PUNCH UNIT SELECTOR SWITCH CABINET Figure 1 - Typical 28 Automatic Send-Receive (ASR) Teletypewriter Set Page 2 ISS 1, SECTION 573-101-100TC AUXILIARY TYPING REPERFORATOR SET TYPING PERFORATOR ELECTRICAL SERVICE UNIT TRANSMITTER DISTRIBUTOR ELECTRICAL SERVICE UNIT FOR AUXILIARY TYPING REPERFORATOR SET Figure 2 - Typical 28 Automatic Send-Receive (ASR) Teletypewriter Set (Interior View) Page 3 SECTION 573-101-1 00TC 1.05 Transmission between stations is accomplished electrically using the Baudot teletypewriter signaling code. The ASR Set operates a t speeds up to 100 words per minute. 2.04 Variations in typing units include fri ction feed and sprocket feed units. Motor units are either ac synchronous or de governed. 1.06 Reference should be made to the appropriate sections which describe in detail the various ASR Set components. 2.05 A number of special and optional features are available with the ASR Set. However, these do not affect the basic arrangement of components. 1.07 2.06 References to left or right and front or rear views are made from a position in front of the ASR Set. 2. CONFIGURATION 2.01 The ASR Set is made up of a group of components using a basic arrangement. These components, described in Part 3, are: (a) Keyboard (b) Typing Unit (c) Perforator (tape punch) (d) Transmitter-Distributor (e) Electrical Service Unit (f ) Motor Unit (g) Cabinet 2.02 To meet varying installation and operational requirements , the selection of the particular kind of component is often varied, but without changing the basic arrangement. The transmitter distributo r, for example , may be any one of the following units: (a) Fixed Head Single Contact (b) Pivoted Head Multicontact (c) Fixed Head Multicontact (d) Pivoted Head and Fixed Head Multicontact 2.03 The perforator (or reperforator) used may be any one of the following four available units: An addition to the basic component ar- rangement of the ASR Set is the inclusion of an Auxiliary Typing Reperforat or Set. Space is provided in the cabinet for this completely independent receiving unit. Refer to Part 3 for a description of this set. 3. COMPONENTS The ASR Set is made up of seven basic components which, because of operational requirements, may vary in features from one installation to another (Part 2). These components are briefly described in the following paragraphs. A complete de scription including principles of operation appears in the appropriate sections. 3.01 TYPING UNIT The typing unit contains the mechanisms necessary for translating electrical input signals into printed, alphanumeric characters or functional control operations. The unit may be equipped to accommodate either friction or sprocket feed paper, in single or multicopy form, either rolled or fan folded. It includes a stunt box that provides nonprinting functions such as case shifting, carriage return and line feed and, in addition, switching facilities for remote controls, station selection, and other a pplications. 3.02 KEYBOARD 3.03 The keyboard contains the mechanisms for generating and transmitting a teletypewrite r signal. It also provides mounting facilities for the typing unit, one of four tape punch units, a motor unit, and the necessary driving gears and cross-shafts. Typing and perforating functions originate from the operation of keytops. (a) Nontyping Perforator TAPE PUNCH UNffS (b) Typing Pe rforator 3.04 (c) Nontyping Reperforator (d) Typing Repe rforator Page 4 One of four different tape punch units is available with the ASR Set. These receiving- only units contain the mechanisms that translate electrical or mechanical inputs into ISS 1, SECTION 573-101-100TC (' perforations in the tape or both perforations and printed characters. The tape prepared by the units may be either fully perforated or partially perforated (chadless). ( 3.05 Two of the units are perforators and are operated and actuated mechanically by the keyboard. The nontyping perforator prepares only perforations in the tape. The typing perforator, in addition to perforating the tape, types messages on the tape. 3.06 { The remaining two units available are reperforators, which are equipped with a selector mechanism to receive inputs electrically. The nontyping reperforator prepares only perforations in the tape. The typing reperforator produces perforations and types on the tape. They may also be actuated mechanically. 3.07 The ASR Set may be equipped with an Auxiliary Typing Reperforator Set. This completely independent set contains the following components: (a) Typing reperforator unit. ( (b) Base (with gears, terminal boards, controls; on some sets controls are on a panel mounted on the front of the cabinet). (c) Electrical service unit (installed in the lower right side of the cabinet). (d) Motor unit (a variable speed gear shift mechanism is available with some units. This allows selection of 60, 75, or 100 word per minute speeds). TRANSlVIITTER-DISTRIBUTORS { ( ,, 3.08 A transmitter distributor contains the necessary mechanisms to advance the tape, read its perforations, and to convert these into teletypewriter signals. The transmitter distributor is installed on a separate base, but receives motive power from the keyboardmounted motor unit. The unit is controlled by a three-position start-stop switch which is accessible to the operator. The ASR Set uses one of four available transmitter distributors: (a) Fixed Head Single Contact: Contains a stationary tape reading head and a singlecontact distributor. Output is sequential. (b) Pivoted Head Multicontact: Tape reading head and signal distributor may be actuated independent of each other by local or remote control. Unit ~s always used in conjunction with a punching unit because the pivoted reader can move along the tape, read and transmit the last character PWlChed. This unit is used frequently with continuous tape loops. Output from the transmitter distributor is in sequential or parallel form. (c) Fixed Head Multicontact: Tape reading head and signal distributor may be actuated independent of each other by local or remote control. Output from transmitter distributor is in sequential or parallel form. Signal distributor also accepts external parallel inputs and converts them to serial form. (d) Pivoted and Fixed Head Multicontact: This consists of two tape reading heads (one stationary, the other pivoted) and a single-contact signal distributor. The pivoted head is mounted in line with and accepts tape directly from the ASR Set punch unit. The stationary tape head is accessible externally for manual insertion of tape from any source. This arrangement permits the combining of inputs, such as standard and variable data. Output from the signal distributor is in sequential form. ELECTRICAL SERVICE UNIT The electrical service unit serves as the area of concentration for the wiring of the ASR Set, and provides mounting facilities for various electrical assemblies and components. It may include such optional assemblies as a line (polar) relay, line shunt relay, and line test key, The set's main power switch, convenience outlet and fuse, terminal blocks, and interconnecting cables may also be included. 3.09 MOTOR UNITS 3.10 The motor units that provide mechanical motion for the ASR Set are of two basic types: ac synchronous and ac/dc series governed. The ac synchronous motor is used when the power source is regulated; the ac/ de series governed motor operates from either regulated or unregulated power. The latter is required where only unregulated power is available. The units operate at the same speed and are rated heavy-duty to accommodate the set's load requirements. CABINET 3.11 The components of the ASR Set are enclosed in a floor mounted cabinet which includes space for an Auxiliary Typing ReperfoPage 5 SECTION 573-101-100TC rator Set and other optional equipment, and for accessories such as paper and tape handling equipment. 5. OPERATION ') GENERAL OPERATION The components are interconnected electrically or mechanically to provide a wide range of possibilities for sending, receiving or storing teletypewriter messages. Electrical connections between the components are routed through the electrical service unit. Transmitted signals are initiated through the keyboard or the transmitter distributor (Figure 3 ). 5.01 4. VARIABLE FEATURES A wide variety of optional features are available with the ASR Set. These features, which provide special, nonprinting operations or control facilities, or serve as an aid in operation, are in most cases readily installed in the field. Some of the features are described briefly below. 4.01 (a) Horizontal Tabulator: Permits rapid movement of the typing unit typebox to predetermined positions on the copy paper. (b) Vertical Tabulator: Advances a form to any predetermined position within the form. (c) Form Feed-Out: Advances a form to the first printing line on the succeeding form from any point on the previous form. (d) Automatic Carriage Return-Line Feed: These functions occur simultaneously should the sending station fail to initiate them, when the typebox reaches the right margin. (e) Contact Mechanisms: A number of electrical contact mechanisms are available to provide control of external equipment or for other special applications. These include code reading, timing, auxiliary, and lettersfigures contact mechanisms. (f) Tape Feed-Out Mechanism: This mechanism may be installed on the tape punch units. It operates automatically or manually to feed out a length of blank or letters perforated tape for convenience in tape handling. Tape feeding may be either interfering or noninterfering. (g) Back Space Mechanism: This mechanism, operated manually or with powerdrive, retracts tape back through the punch block to allow erroneously perforated data to be obliterated by replacement with the letters code combination. (h) Accessories: A number of accessories are available to facilitate paper, tape, and form handling, including low-supply indica,.tor alarms, special trays and shelves, chad chutes, and paper winders. Page6 ') 5.02 Received signals are recorded by the typing unit which also monitors local, off-line transmissions. The tape punch (typing or nontyping perforator or reperforator unit) prepares tape on which received or locally prepared messages may be stored for future transmission by the transmitter distributor. ) 5.03 The keyboard, tape punch unit, typing unit, and transmitter distributor receive their motive power from a single motor unit. A three-position mode selector switch, mounted on the front panel of the cabinet, permits the operator to place the ASR Set into one of three operating conditions: 5.04 ) (a) Keyboard (K): P 1 a c in g the selector switch in the K (keyboard position) conditions the ASR Set so that messages may be transmitted from the keyboard. All messages transmitted are recorded on the typing unit. {b) Keyboard-Tape (K-T): Placing the selector switch in the K-T (keyboardtape position) enables· the ASR Set to transmit from its keyboard and, at the same time, record all transmission in both punched tape and page-printed form. ) (c) Tape (T): Placing the selector switch in the T (tape position) conditions the ASR Set so that operation of the keyboard produces punched tape only. No external transmissions occur. However, the typing unit is operable and will record all received messages. 5.05 The transmitter distributor is controlled by a start-stop switch which is accessible for operation by the operator. Transmissions are automatically stopped by tight-tape or tapeout devices, which are incorporated in the transmitter distributor, should these tape conditions occur. -~ ;~:~ .)' "· ISS 1, SECTION 573-101-100TC I K --------, ,----------1 I SENDING UNITS I'-- l~ ,-:!·'1: I I \L I I I I I ... I I I I I l I I TAPE PUNCH KEYBOARD I ' Me,ssages are transmitted from the keyboard and recorded on the typing unit. Received messages are recorded on the typing unit. .I I I 'jJ' MODE SELECTOR SWITCH I I I I .. - RECEIVING UNITS KEYBOAIID } " " " ''' ELECTRICAL SERVICE UNIT ..~ ... 1 M~~R t---~ ~G K·T • Messages are transmitted from the keyboard and recorded on both the typing unit and tape punch unit (perforator or reperforator ). Perforator (illustrated) is actuated mechanically; reperforator is actuated electrically and may be used, as can the typing unit, to record received messages. Reperforator may also be actuated mechanically. I I ELECTRICAL SERVICE UNIT ••••• KEYBOARD ' •••••• • •••••• • • • .. ',',i M= ~---"1 ~G I ~ I TAPE PUNCH I I I I T I No external transmissions occur. Messages typed on the keyboard are recorded by the tape punch w1it. Received messages are recorded on the typing unit, and/or reperforator. I I I L ________ _ ---------' TRANSMITTER DISTRIBUTOR OPERATION ~ Provides motive power for sending and receiving units. ELECTRICAL SERVICE UNIT Central interconnection point for ASR Set electrical circuits. The transmitter distributor, controlled ';J"'- by a start-stop switch, may be operated ~ MOTOR UNIT KEYBOAIID ',, ••••••I I I I I L I I M~R l ' _____ .. . .1 ~G I ELECTRICAL SERVICE .__ UNIT I TYPING UNIT I in place of the keyboard in all operating modes. Transmitted messages are recorded by the typing unit and reperforator-type tape punch unit. TRANSMITTER DISTRIBUTOR • ••••• til- -- ,, _, ELECTRICAL SERVICE UNIT t...__ __::.::..___ _-1 •• • •• ~ '',,,,~ M~R f---~ ~G I Transfer of Intelligence Electrical ·············~ Mechanical Transfer of Motive Power -. _________ _..., ~ Figure 3 - Typical 28 ASR Set Components and Operating Modes Page 7/8 ISS 1, SECTION 573-101-100TC ( ( 5.06 Control of the optional Auxiliary Typing Reperforator Set is provided either by controls located on the accessory control panel on the front of the cabinet, or by controls located on the typing reperforator base and accessible through a cabinet access lid. The Auxiliary Typing Reperforator Set is connected to a separate signal line circuit and may therefore receive and record messages simultaneously with but independent of other ASR Set operations. a function, until it receives instructions in the form of selective calling code sequences. 6. TECHNICAL DATA SIGNAL REQUIREMENTS Code: Baudot (five level start-stop); sequential. Input: SELECTIVE CALLING (1) Neutral - S e 1 e c to r magnets directly connected to signal line, or through line relay. ASR Sets may be equipped to operate in a selective calling system. Selective calling operation is a method of message transmission control in which traffic is selectively directed only to those sets actually concerned with the information being transmitted. Each set in the circuit, which may be standard line or radio, is assigned an identification code. The code may be made up of any character or sequence of characters. Recognition of this code, and other selective calling codes, is made by the stunt box in the typing unit of each set. The typing unit, upon recognition of the proper code, will be placed in the select-nonprint condition. When this occurs, direct printing is suppressed while the selector mechanism and the stunt box remain active. In this way, the typing unit monitors signal line conditions but does not respond, either to print or to perform 5.07 ( ( (2) Polar - Line relay or selector magnet driver required. Line Current: 20, 30, or 60 milliamperes. POWER REQUffiEMENTS (TYPICAL) Sets with Synchronous Motor Units - 115 v ac .:t.10%, 60 ±. 75% cycles, single phase. Sets with Governed Motor Units (1) 115 v ac .:!::.10%, phase. 50-60 cycles, single (2) 115 v de with external resistance. OPERATING SPEEDS ( Characters Per-Minute or Per-Second Operations Unit Code 600 460 428 404 400 390 368 10.0 7.7 7.1 6.7 6.7 6.5 6.1 7.42 7.42 7.00 7.42 7.50 7.00 7.42 Bauds (Bits-per-second) 74.2 56.9 50.00 45.5 Frequency (Cycles/Second) 37.1 28.4 22.8 One Character 100 130 140 25.00 149 150 154 163 Unit Pulse 13.5 17.6 20.0 20.0 20.0 22.0 22.0 Stop Pulse 19.1 24.9 20.0 28.5 30.0 22.0 31.2 Length in Milliseconds APPROXIMATE DIMENSIONS (INCHES) ( ( ! I APPROXIMATE WEIGHT (POUNDS) Height Width Depth Total Weight 260 39 36 18-1/2 (less keyboard which extends 4-1/2 inches) Shipping Domestic E?f:port 530 600 (See Figure 4 for dimensional details.) I Page9 SECTION 573-101-100TC ~, PRINTED CHARACTERS (TYPING UNIT) Type Pallet Arrangements- Standard, Upper Case Arrangements Include: (1) Communications (punctuation symbols) »i) (2) Fractions (3) Weather symbols Individual pallets for upper and lower case charaCters are available separately for field installation. Type Styles and Spacing (Typical) Style Murray Gothic Gothic Long Gothic Large Gothic --------------- - Character Height Caps Fraction .103" .103" .103" .120" .180" Horizontal Characters Per Inch Sirigle - SPACE - Double .162" none .162" .170" .180" ---- 10 10 12 1() 10 -- 5 5 6 5 5 '')__, Vertical Lines Per Inch Single - FEED - Double 3 3 3 3 3 6 6 6 6 - --- PLATENS Physical Characteristics Friction Feed Sprocket Feed Construction Rubber covered cylinder; fixed to platen shaft. Rubber covered cylinder, free on platen shaft. Length 8-3/ 4" Selected for desired form width. Paper Width Any width up to iJ-i/2" Minimum: 3-5/8" Maximum: 9" Characters per line (10 per inch) Margin is adjustable from 1 to 85 characters Margin is adjustable from 1 to maximum number indicated in chart. ) I __j :> SPROCKET FEED PLATENS Form Width in Inches Maximum Characters* Per Line Form Width in Inches MaXimum Characters* Per Line 9 8-1/2 8 7-1/2 7 6-1/2 6-3/8 6-1/4 6 77 72 67 62 57 52 51 50 47 5-3/4 5-1/2 5 4-1/2 4-5/16 4-1/4 4 3-5/8 44 42 37 32 30 29 27 23 J ":;.-; _J_ ••.. --- *Based on ten characters per inch with allowance of three characters for platen endplay. Page 10 I *' ISS 1, SECTION 573-101-100TC ( ( TYPING UNIT RIBBON TAPE SPECIFICATIONS style • • • • • • • • • • • • • • Black record ribbon Length. . . . . . . . . . . . . . . . . . . . . . . 33 feet Width . . . . . . . • . . . . . . . . . . . . . . 1/2 inch Thickness. • • • • • • • • • • • • • • • • 0.0055 inch Type • • • • • • • • • • • Standard communications Width ••••••••••••••••••••• 11/16 inch Code perforations. Chadless or fully perforated Characters or feed holes per inch. • • • • • • 10 PRINTED CHARACTERS (TAPE) TYPING UNIT PAPER (FRICTION FEED) ( Height •••••••••.... Chadless, 0.120 inch; fully perforated, 0.100 inch Width •••.•..•••.•.. Chadless, 0.075 inch; fully perforated, 0.046 inch Location of Printing . . . . . Along upper edge of chadless perforated tape; between feed holes on fully perforated tape Type • • • • • • • • . • Standard yellow paper roll Outside diameter .••••••••.••• 4-1/2 inch Width. . • • . . . • • • . • . . • • . • • . . 8.45 inch Length . . . . . . . . . . . . . . . . . . . . . 325 feet Core diameter • • . . . • • . • . . . • . . . • 1 inch Core thickness. • • • . . . • • • • . • . . 0.125 inch I 17 IN. l I ,===:::::::;[ 0 ...-I----.~ rt__, / I ~ ~8~ IN. J r - ( l_ -=== ,I /~-, I~= [0 = ... 0)1 1/ 4 IN. = 39 IN. 25 IN. ( L_. ~---- 36 [ IN.---------.1 46 IN. (WITH COPYHOLDER) ' ~. ,5 IN. 18-1/2 IN •. -.I Figure 4 - ASR Set Dimensions ( (, Page 11 SECTION 573-101-100TC 115 V AC 80 CYCLES ') ,, OUTLET I.H AIIP TillE DELAY MAINT LDIT FUSE SWITCH e OFF ON ~) THERMAL CUTOUT SWITCH PERFORATOR BACK SPACE SWITCH PERFORATQR BACK SPACE MAGNET MODE SELECTOR SWITCH CLUTCH MAGNETS START-STOP SWITCH TRANSMITTER DJSTRIBVTOR ) LINE SHUNT RELAY CONTACTS f- M'l:!OONG-SPACiN~ I I 0.1 1 MF t ~ ...,.....--41----+' -+--.• G i:PAtmGj I • • • ; I I "f' I I 1 I I I I : I I I LINE BREAK SWITCH I L-----------J TRANSMlTTER-DISTRIBUTOR I I I I IL. • ___________ J KEYBOARD SIGNAL GENERATOR CONTACTS SIGNAL GENERATOR CONTACTS 18001\ J r-·-- \f 1 LINE I TEST I KEY + ~ TEST -+ L------------------- J SIGNAL LINE Figure 5 - Typical 28 Automatic Send-Receive (ASR) Teletypewriter Set, Schematic Diagram Page 12 12 Pages ,,) '~ TELETYPE CORPORATION Skokie, Illinois, U.S. A. ( SECTION 573-101-200TC Issue 1, April, 1967 28 AUTOMATIC SEND-RECEIVE (ASR) TELETYPEWRITER SET INSTALLATION OF COMPONENT UNITS ( CONTENTS PAGE GENERAL .•..•.••••...•..• 1 14. LIGHTING FACILITIES. . . . . . . . . 18 2. INSTALLATION . . . . . . . . . . . . . . 3 15. OPERATING TESTS. . . . . . . . . . . 19 3. CABINET ASSEMBLY . . . . . . . . . • 3 A. B. Installation . . . . . . . . . . . . . . Electrical Routing Access Holes (Connections) . . . . . . . • Separately Ordered Accessories • • . • . . • . . . . . . 3 4. ELECTRICAL SERVICE UNIT . • . . 4 5. KEYBOARD PERFORATORTRANSMITTER, MOTOR UNIT, AND TYPING UNIT. . . . . . . . . . . • 5 Initial Assembly before Installation in Cabinet. . . . . . . Adjustments before Installation. Installation of Units in Cabinet . 5 5 6 TRANSMITTER DISTRIBUTOR UNIT (LCXD) AND BASE (LCXB) . . 6 TRANSMITTER DISTRIBUTOR UNIT (LAXD) AND BASE (LCXB) . . 8 TRANSMITTER DISTRIBUTOR UNIT (LBXD) AND BASE (LCXB) . . 9 TRANSMITTER DISTRIBUTOR UNIT (LXD) AND BASE (LCXB) • • • 11 TRANSMITTER DISTRIBUTOR UNIT COMBINATION (LXD PLUS READER LX), AND BASE (LCXB). . 12 11. TAPE WINDER (TW) • . • • . . . . . • 14 12. AUXILIARY TYPING REPERFORATOR UNIT (LPR), BASE (LRB) AND MOTOR UNIT (LMU) . . . . . . . 14 MISCELLANEOUS INSTRUCTIONS . 18 C. A. ( B. C. 6. 7. 8. 9. 10. ( 13. (' CONTENTS 1. ( ( PAGE 3 1. GENERAL 1. 01 This section is issued to describe the installation of component units and the method of assembling a 28 Automatic Send- 4 Figure 1 - Typical Automatic SendReceive (ASR) Set © 1958 by Teletype Corporation All rights reserved Printed in U. S. A. Page 1 S.li.:CTION 573-101-200TC Receive Set (28 ASR). It also provides therequirements and adjusting procedures needed for proper operation of the set. 1. 05 Essentially, a complete 28 ASR Set consists of the following basic Model 28 units, some of which may be provided with various accessories for different service requirements: 1. 02 This section includes additional installation and adjustment information for the 28 ASR transmitter distributors. '~ , (1) Automatic Send-Receive Cabinet-LAAC 1. 03 Instructions for installing an auxiliary typing reperforator in a 28 ASR cabinet are given in the section entitled" Auxiliary Typing Reperforator for 28 Automatic Send-Receive Set - Installation. " Note: This section contains instructions for removing and installing the housing for the TD unit (transmitter distributor unit) when the housing is furnished as part of the cabinet. When the housing for the TD unit is ordered separately, as a modification kit, refer to Teletype Specification 5885S (furnished with each kit) for installation information. 1. 04 In this section all references to the location of parts are made from the operator's position in front of the set. ~'') ~---------------------------------, ( AUXILIARY TYPING I REPERFORATOR (LPR) I AND BASE I (LRB) TRANSMITTER DISTRIBUTOR BASE (LCXB) 1 \ I , I I I MOTOR UNIT \~ : (LMU) _\ II I I I ELECTRICAL SERVICE UNIT (LESU) I1 II II MOTOR UNIT : (LMU) : 1 I i'.."" PERF ORATOR (LPE g~ LTPE) L. - -- - - - - - J I I I I '), ' I I REPERFORATOR ,(LPR OR LRPE) I I I ' I TYPING UNIT (LP) : I I I I \ ' . "' \ - I I ,) TRANSMITTER DISTRIBUTOR UNIT (LAXD, LBXD, LCXD, LXD OR LX) AUXILIARY TRANSMITTER (PART OF LCXD) OR TRANSMITTER DISTRIBUTOR LXD (WHEN ASSOC WITH LX) KEYBOARD PERFORATOR TRANSMITTER (INCLUDES ,LAK KEYBOARD AND PERFORATOR OR REPERFORA TOR) (Top View) Figure 2- Location of Units in Automatic Send-Receive Cabinet Page2 / ,J ISS 1, SECTION 573-101-200TC (2) ( Electrical Service Unit - LESU (1) Cabinet (2) Electrical service unit (3) Keyboard Perforator-Transmitter LAK/LPE, LTPE, LRPE or LPR ( (4) Typing Unit - LP (3) Perforator-transmitter base, motor unit, gears for both the typing unit and the punch mechanism (5) Motor Unit - LMU (4) Typing unit (6) Transmitter Distributor Unit- LAXD, LBXD, LCXD, LXD or LXD and LX (7) ( Base for Transmitter Distributor Unit LCXB (8) Two (or three) sets of gears (depending on the apparatus to be installed in the cabinet) must be ordered as separate items for desired speed of operation. For part numbers referred to, see the appropriate section covering parts ordering information. (5) Transmitter distributor unit and base (6) Auxiliary typing reperforator and base An illustration of a typical 28 ASR Set is shown in Figure 1. The general arrangement of the components of the 28 ASR Set is shown in diagram form in Figure 2. Note: If the set is being assembled from new components, observe the following precautions: Unpack all components with care. 2. INSTALLATION Observe all caution labels and instructions. 2.01 Whenassemblinga 28 ASR Set, the components should be installed in the following sequence: ( -E}-Vo 0~~\ 0 0 0 0 0 0 o~ ~~ ~~ ~===;i ( '{I I I 3. CABINET ASSEMBLY A. Installation 3. 01 ~ M Adjust the four feet of the cabinet using a 3/4-inch open-end wrench, until the cabinet is level. If desired, a maximum of oneinch increase in cabinet height may be obtained by this adjustment. This adjustment may be modified at the time of station installation, if necessary. See Figure 3. I ID (a) If it is desirable to secure the cabinet directly to a mounting surface, remove and discard the four feet. ~ (b) In selecting the mounting bolts to be used, make certain that they are of such length as to engage all the threads in the holes from which the feet have been removed. l <I 1--'iV FRONT OF CABINET 34-3/8" I a 1/2- 13 THD (4 Places) ( (Bottom View) l All bags and loose parts should be kept with their associated components until used to assemble the set. Figure 3 - Securing Automatic Send-Receive Cabinet to Mounting Surface 3. 02 B. Electrical Connections: Electrical Routing Access Holes (Connections) (a) Remove the cover plate from the right rear corner of the floor in the lower compartment of the cabinet. Remove the two punchouts from the cover plate and reinstall the cover plate in the floor of the cabinet. Install clamp bushings in the two punched-out Page3 SECTION 573-101-200TC holes and feed the line and power cords through them and then up through the hole in the right rear corner of the shelf of the apparatus compartment. If additional cable thickness is required, wind the clamping point of the cord with electrical or friction tape. (7) Check each accessory package for installation specification. *Denotes a suffix which indicates the color of paint finish. 4. (b) Make power and telegraph circuit connections to the cabinet, and attach the various units comprising the printer set, in accordance with the appropriate wiring diagrams furnished with the cabinet. Note: At the time of station installation, the screw located on the right rear of the cabinet above the C40 terminal should be connected to the common station ground. 3. 03 Insert the shaft of the power switch under the right base angle of the cradle so that the control handle protrudes through the hole provided in the right front of the cabinet. The shaft rests on'the spring mounted under the right end of the rear base rail. The arm bracket is to the rear of, but just touching, the rear base rail of the cradle. The shaft handle should point to the right. Note: In order to prevent transmission of vibrations to the cabinet and thereby to aid in reduction of the operating noise level, be sure that all components of the set are mounted in such a way that they do not come in direct contact with the cabinet shell. C. Separately Ordered Accessories 3. 04 ELECTRICAL SERVICE UNIT Insert the LINE-TEST key shaft under the left side of the cradle in the cabinet so that the control handle protrudes through the hole provided in the center front of the cabinet. The shaft rests on the spring mounted on the left end of the rear base rail. The arm bracket is to the rear of, but just touching, the rear base rail of the cradle. The shaft handle should point to the left. Place the electrical service unit in the rear right corner of the cabinet behind the cradle with the legs extending upward and the nameplate facing the front. Install the two mounting studs through the holes in the electrical service unit container and into the threaded holes in the cabinet shelf. 4. 03 Connect the cabinet terminal block cables in accordance with the wiring diagram for the particular cabinet and electrical service unit being used. Route each of the cables which are to connect to the typing unit, the perforatortransmitter base, and the transmitter distributor, to the approximate location where it will later be connected to its respective component. Fasten the power switch fork to the bracket arm of the power switch with the screws, lockwashers, and washers provided. Place this fork end over the power switch on the electrical service unit and locate the end of the power switch shaft in the hole near the right end of the container. The right-angle shaft should point to the right. Make certain that the groove in the end of the shaft engages the hole in the electrical service unit container. (4) Relay Rack- Specification 5915S (5) Mounting of Electrical Service Unit on Relay Rack - Specification 5928S (6) Subbase to permit Stand-Up Operation of ASR Set - Specification 5846S Page 4 ) 4. 04 (1) Offset Copyholder- Specification 5736S Specifica- ') 4. 02 Make the necessary strap connections at the cabinet terminal block as shown in the wiring diagram for the electrical service unit. (3) Apparatus Mounting Rack tion 5730S ,:, '''.' 4. 01 Installation instructions for the separately ordered accessories are included with each accessory; for example: (2) Directory Holder (Furnished with LAACand 209*, LAAC210*, LAAC235*, LAAC236* Cabinets) - Specification 5729S ,, 4. 05 4. 06 Repeat 4. 06 for the LINE- TEST key on the left side of the electrical service unit, with the exception that the control shaft should point to the left. ") ,,. iJ 4. 07 ;,~ ISS 1, SECTION 573-101-200TC 5. 03 Install the gears for 60, 75, or 100 wpm operation of the 28 ASR Set using the following procedure (see Figure 4): COUPLING TP173645 (Install as shown with external hub toward motor) ( PINION GEAR (See Note) ( CLEARANCE SOME TO 0. 020 INCHES (a) Remove the screw and lockwasher from the left end of the motor shaft. Place the motor pinion on the motor shaft with the gear end toward the motor. Secure the gear with the screw and lockwasher just removed. MOTOR \./r-? \, I \ I I I I ( I \ I I I I I , I (b) Remove'the two screws and lockwashers from the hub on t