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RTS TWI222 Technical Manual

Tw intercom system interface units
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TECHNICAL MANUAL
TM3600 1 OIN 9300-360040
I
MODEL TW1222 1 ~ ~ 1 2 2 4 1
Including
TW1222-T
TW1222-CM
TWI-SK7O-DCU
TW Intercom System
Interface Units
RTS SYSTEMS
A Telex
Communications Product

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Summary of Contents for RTS TWI222

  • Page 1 TECHNICAL MANUAL TM3600 1 OIN 9300-360040 MODEL TW1222 1 ~ ~ 1 2 2 4 1 Including TW1222-T TW1222-CM TWI-SK7O-DCU TW Intercom System Interface Units RTS SYSTEMS A Telex Communications Product...
  • Page 2 Edited by: Sheryl D. Thompson Address all communication regarding Director of Engineering RTS Systems 1100 West Chestnut Street Burbank, 91506 USA RTS Systems Burbank, TECHNICAL MANUAL Model TWI224 /TWI222 Interface Units UNPACKING herein were Immediately upon Systems. shipping container design, discrepancies...
  • Page 3 RTS Systems Burbank, TECHNICAL MANUAL Model TWI224 TWI222 Interface TABLE OF CONTENTS .-... "."--"-.."." ........................
  • Page 4 Model TwI22a SECTION 5: MAINTENANCE Ref. No Title ..Impedance Chaghg SECTION 6. LISTS OF REPLACEABLE PARTS Ref. No Title ..Introduction How To Obtain Parts Shipping Lists Assembly Back Panel m b l y Front Panel Assembly Printed Cuaut Assembly TWUZZ Assembly, Model...

  • Page 5: Second Edition, July

    NEITHER RTS SYSTEMS NOR TEE DEALER WHO SELIS RTS SYSTEMS' PRODUCTS LIABLE INCIDENTAL CONSEQUENTIAL DAMAGES OF ANY RTS Systems Burbank TECHNICAL MANUAL TWI222 Interface Units RETURN SHIPPING INSTRUCTIONS a California ProcedureForRehuns: repair is neeeasary, contact the dealer where this unit was purchased...

  • Page 6: Introduction

    The TWI222 interfaces are for interfacing an RTS system to other two wire intercom systems. The TWU22 is supplied in three different wnIigurations, the T W I 2 2 2 , the TWI222-CM, and the TWI222-T. The TWU22 is designed to interface RTS systems to interwm systems with a line impedance of 200 ohms nominal, with a range of 100 to 400 ohms.
  • Page 7 This must present 2 - 1 . talk terminate 4-wire output TWI-224 FOR W1224-RM(E) Connector And Cable Wiring For The Systems Burbank, TECHNICALMANUAL Model TWI222 Interface Units TWI22A INTERCOMS line minimum. Connect 4-wire system pins system pins 3 and of the...
  • Page 8 TWI-222. Conned the external intercom line to pins 3 and 2. This input is capacitor coupled and FOR TW1222-RM(E) Connector RTS Systems Burbank, TECHNICAL MANUAL Interface Units lWE24 TWI222 TWI-222. Connect the RTS line to the RTS of the front-panel XLR-4 wnnector. line voltage-s withstand high as 25 volts <...
  • Page 9 < TW1222-T-RM(E) Connector And Cable RTS Systems Burbank, CA 915061 FSCM: 60572 TMbCQ/ Second Edition, July 1989 TECHNICAL MANUAL TWI224 TWI222 Interface Units t e b h o l d switch oE Conned the minimum, switch This input capacitor coupled and can withstand voltages at the same time.
  • Page 10 TECHNICAL MANUAL Model lWI224 TWI222 Interface Units TELEPKNJE TWI-222- T-RM REAR PANZL Figure 2-4 Connector And Cable W For The TWI-m-T-RM FSCM: 60572 T h 9 6 0 0 / Second Edition, July RTS Systems Burbank, 91506/ 1989 Page...
  • Page 11 TWI-222-CM. XLR-4 conneetor. figure Systems Burbank, TECHNICAL MANUAL / TWI222 Model TWI224 Interface Units system through one of its user station's Turn gain and balance controls to minimum. T h i s is usually suitable for a small number of stations (less...

  • Page 12: Introduction ..................................................... "

    Set the BALANCE FROM RTS control to approximately 50%. Inaease the GAIN FROM RTS control to maximum. RTS Systems Burbad, TECHNICAL MANUAL TWI222 Interface Units Speak or hum into the carbon microphone headset This section and adjust a null is obtained.
  • Page 13 Model TWIZ24 Speak or hum into the carbon microphone headset FROM and adjust the BALANCE RTS control until a null i s obtained. GAIN FROM Decrease the RTS control to minimum. U s e an RTS user station to listen on the RTS Turn the microphone off and volume to maximum.
  • Page 14 TECHNICAL MANUAL TWI224 TWI222 Interface Units works. Section 4 2 desuibes the circuit as used in both the W e and used in the TWI222-T and TWI222-T-RM. T W I 2 2 4 . The "ZW" intercom 5mAfiOLT CURRENT SOURCE...
  • Page 15 4. 4 This section describes the circuit operation of the TWIZL4. The power supply of the power from channel power (LP) units wall-plug transformer with an output of 14 volts dc. TWI222 It is provides acts as a fuse catastrophic 91506...
  • Page 16 TECHNICAL MANUAL Model TW1224 XLR-3-31 CURRENT CHANNEL SELECT REGULATOR RACK MOUNT (-RM) XLR-4-32 (MALE). Burbank, CA Systems 91506 Interface Units TWU22 LEVEL TO RTS 20db SOURCE VERSIONS, CONNECTOR Figure TWU22 Block Diagram 60572 TM3600 FSCM. Secnnd Edition, July 1989 Page 4-3 CONNECTOR...
  • Page 17 (upper right) to Ulb, the output of a bilateral current source. From the wiper o f RTS) it passes t h r o d it joins RZSA TWI222. keep the circuit stable. Uld has a gain of 10 (20 dB). This feeds Ula which is the output of and C29 are large.
  • Page 18 Model SECTION 5: MAINTENANCE CHANGING IMPEDANCE, Burbank, CA 91M6 Systems TECHNICAL MANUAL TWU22 Interface Units TWllZQ NOTE DR-501 following application note) (see TMXXXX / FSCM: 60572 Page Seumd Edition, July 1 9 8 9...
  • Page 19 Application Note TWI-222 INTERFACE SUBJECT TWI-224 INTERFACE & CHANGING IMPEDANCE APPLICATION: GENERAL INFORMATION SPECIFIC DATA 2/5/80 DATE DR-101 APP NOTE PAGE The impedance o f t h e TWI-224 may be changed t o b e t t e r match y o u r system.
  • Page 20 1 1 0 0 N e s t Application TWI-224 SUBJECT CHANGING APPLICATION GENERAL INFORMATION SPECIFIC DATA 2/5/80 DATE DR-101 NOTE PAGE WIRE: OHMS WIRE: OHMS OUTPUT Burbank, Systems C h e s r n u l S t r e e l B u r b a n k Note INTERFACE...

  • Page 21: How To Obtain Parts

    S i i Alco Knob, Dual Blk 1/4" A h , Systems Burbank, TECENICAL MANUAL Model lWIZZ4 TWI222 Interface Units RTS PART NUMBER RTS PART NUMBER (W10-2195-00) RTS PART NUMBER Phil NKL PL ST 2 6 M 9 U 7 l51ORlU32R...

  • Page 22: Front Panel Assembly

    Model ' I W12U BACK PANEL ASSEMBLY DESCRIPTION Washer, 378ID, 6WD, Switchaaft Nut, 4-40 Nut, Hex, 318" 4-40 Screw 318" lOOde Cap, Mono .luf/50v Spacing, Mic. Conn. Carbon Switchaaft Cone male Neutrilr NC3MP Corn 3 Pin Female Hirase 24AWG, blue vinyl, Wue, AWG,...
  • Page 23 Model PRlN'IED CIRCUIT ASSEMBLY DESCRIPTION Res. 2OK ohm 1/4w 5% Res. ohm 1/4w 5% Res. 22 ohm 1/4w 5% Rcs.CF36ohm1/2w5% 33 ohm 1/8w 5% 470 ohm 1 1 4 ~ 5% 4.7K ohm 1/4w 5% Cap, .Oluf/lhr C.D. 1510R1032R Cap, szOpf/lKv Ccr Radial Cap, Mono .luf/50v .
  • Page 24 Model TW1224 FINAL ASSEMBLY (9010-2lS4-00) TWlZ22 DESCRIPTION Washer, Teflon Seastrom 5612-37-40 S a w 8-32 x 112" loode Flat HD Phil P o t , DL lOK/lOK "CP" 26M907 Shield Bead Fairrite 2 6 m 1 Knob, D u a l Blk 114"...

  • Page 25: Circuit Description

    Model SECTION DIAGRAMS Document N!mkz SDl255 Schematic D ASl38l m b l y Diagram, P.C.B. MU79 Assembly D i a m , P.C.B. EN#l38 Fqheering Note, TWI-SKMDCU Interface m u 6 7 Wiring Diagram, TWISK70-DCU Interface EN#DR-500 TWISK70-DCU, 4-Wm Interface W/SAP 1024, sheet ...
  • Page 26 Systems Burbank, FSCM: 60572 TM3i%l/ Second Edition, July 1989 91W)6 Page...
  • Page 27 VERSlONS;Ql, -RD; F C R FUTURE NOTES: I.MSUED LINES INDICATE Assembly D i i , RTS Systems Burbank, CA 91506 TWI222 Interface Units CASE) (70-92 (TO-IB E l 0 5 CIRCLE) USE. DOTTOM P . C . B . TWI2.24 Interface...
  • Page 28 APPLY A DROP OF CLEAR SILICON TO LAMP BASES TO HOLD THEM I N PLACE. NOTES : Assembly Diagram, P . C . B , RTS Systems Burbank, CA 91506 FSCM: TwI222 Interfaffi Units : 28V, .04A 34MSCP,SK IIR.,/NCANDESCENT MOUSER ELECTRONICS Hold Circuit Layout 1WI224 60572...
  • Page 29 1 1 0 0 W e s t Engineering Note SUBJECT: DATE: 07-14-78 CUSTOMER: ALL USERS ENGINEERING NOTE PAGE: of 2 SET-UP ISO/NORMAL switch to NORMAL. 2) BALANCE control to center of range. Both GAIN controls to extreme counterclockwise position. 4) Plug in a carbon mic or Plantronics type headset into the headset jack.
  • Page 30 TECHNICAL MANUAL Model Interface Units TWI224 TWI222 HITACH1 REAR V I E W AUX CARD CHROMA KEY/RGB ("INCOM' CARD) OUTPUT CARBON 4 WIRE INPUT EST. T E S T JACK PLUG R T S INTERFACE THIS INTO SOCKET Wiring Diagram, TWISK70-DCU Interface...
  • Page 31 1 1 0 0 West Engineering TWI-SK' I O-DCU SUBJECT w i r e 01/29/80 DATE CUSTOMER DR-500 ENGINEERING NOTE PAGE F o r o p e r a t i o n c o n v e r t e d shown below.
  • Page 32 vt'es, 1 l J L l Engineering WI-SK7O-DCU SUBJECT w i r e 01/29/80 DATE. CUSTOMER: DR-500 ENGINEERING NOTE PAGE: F o r optimum p e r f o r m a n c e s h o u l d changed A l s o t e r m i n a t e...
  • Page 33 TECHNICAL MANUAL Model TWU24 TWI222 Interface Units Schematic Diagram, IWISK70-DCU Systems Burbank, 91506 FSCM: 60572 TM3600 Second Edition, July 1989 Page...
  • Page 34 TECHNICAL MANUAL Model TWI224 TWI222 Interface Units O n J U M P E R S OPTION NOTES: Diagram, IWI-SK70-DCU Layout Chart Assembly Systems Burbank, 91M6 FSCM: 60572 TM3600 Edition, Second July 1989 Page 7-10...
  • Page 35 l o o Wesr Application SK70 SUBJECT INSTALLATION INTERFACE TWI-SK7O-DCU APPLICATION GENERAL INFORMATION SPECIFIC DATA 4/15/80 DATE CN02 NOTE PAGE SK70 f o r u s e t h e T W I 51901-51950). camera t h e when t h e t h e PL/Intercom l i n e s...
  • Page 36 1 1 0 0 - s f Application SUBJECT TWI SK70 CARD INTERFACE TWI-SK~O-DCU APPLICATION. GENERAL INFORMATION SPECIFIC DATA OATE. 4 ( 1 5 / 8 0 cN02 PAGE. Wire follows: lcir& from marked from marked from marked from marked from marked Adjust...
  • Page 37 lvesr l l G L ' Engineering Note SUBJECT. WI-SK70-DCU SQUELCH 4/15/80 DATE: CUSTOMER: CN03 ENGINEERING NOTE PAGE: T h i s s q u e l c h c i r c u i t s o l v e s t h e f o l l o w i n g f i e l d operation p r o b l e m of t h e S K 70 d i s c o n n e c t e d and moved, c a r r i e r i s l o s t a t t h e n o i s e...
  • Page 38 Engineering SUBJECT TWI-SK7O-DCU 4/15/80 DATE: CUSTOMER: CNO3 ENGINEERING NOTE PAGE: DCU audio noise with a high statistical probability of high frequency components will trigger this circuit. will normally pass the signal until the control voltage directs the switch to open the signal path and shunt the input of the op-amp going to the PL/Intercom lines to ground.
  • Page 40 TECHNICAL MANUAL TWU22 Interface Model TWI224 Units S q u e l c h For IWI-Sg70-DCU Layout Assembly D i m , P . m . Modification RTS Systems Burbank, 91506 FSCM: 60572 TM3600 Second Edition, July 1989 Page 7-16...

This manual is also suitable for:

Twi224Tw1222-tTw1222-cmTwi-sk7o-dcu