Telex BTR-200 Series manual Table of Contents

Page 2

 

 

 

Table of Contents

 

 

 

 

 

 

Page

 

Chapter 1

 

 

 

 

 

General Description

 

 

1-1

 

Specifications BTR-200

 

 

1-1

 

Controls and Connections

 

 

1-2

 

Front Panel

 

 

 

1-2

 

Rear Panel

 

 

 

1-5

 

Chapter 2 - Identification of Circuit Board Revision and Version

 

 

Audio Boards

 

2-1

 

Receive Board

 

 

 

2-2

 

Transmit Board

 

 

 

2-3

 

Chapter 3 - Transmit, Receive & Audio Circuit Boards

 

 

 

BTR-200 Instrument Disassembly

 

 

3-1

 

Transmit Board

 

 

 

3-2

 

Circuit Descdption

 

 

3-2

 

Alignment Procedure

 

:

3-2

 

Voltage Tables - Transmit Board (878521)

 

3-3

 

PCB Transmit Assembly (878521-*)(palts List)

;

3-7

 

Receive Board

 

 

 

3-9

()

Circuit Descdption (PCB 70714000)

 

3-9

Circuit Descdption (PCB 750309))

 

3-9

 

Alignment Procedure

 

 

3-10

 

Receive Board (70714000)

 

 

3-10

 

Equipment Required

 

 

3-10

 

Receive Board (750309)

 

 

3-11

 

Equipment Required

 

 

3-11

 

Voltage Tables - Receive Board (70714000)

 

3-14

 

Voltage Tables - Receive Board

(750309)

 

3-15

 

PCB Receive Assembly 878522* (Parts List)

 

3-21

 

PCB Receive Assembly 878662* (Parts List)

 

3-24

 

Audio Board

 

,

::

3-27

 

Audio Board Circuit Description

 

 

3-27

 

Receive Expanders

 

 

3-27

 

Microphone Amplifier

 

 

3-27

 

Auxiliary Input Amplifier

 

 

3-27

 

Intercom Driver

 

 

3-27

 

Intercom Input.

 

 

3-28

 

Headset and Speaker Amplifiers

 

3-28

 

Transmit'Mixer and Filter

 

 

3-28

 

Auxiliary Output·

 

 

3-28

 

Remote Transmit Circuit

 

 

3-28

 

Power Supply

 

 

3-28

 

Alignment Procedure

 

 

3-29

 

Equipment Required

 

 

3-29

-i-

Image 2
Contents EnW ~iDD ~~~Table of Contents · Transmit, Receive & Audio Circuit Boards DescriptionChapter Controls and Connections Front Panel-BTR200 27160-8-00I-AMIC on PUSIH-lO-TALKI Rear Panel BTR-200 27160-B-002-ASpeaker / Local Monitor 8 n MIN Rear Panel Refer to Figure Location of Rev Level for Versions 1 Location of Rev Level for Versions 3 thruReceive Board Transmit Board Places Mechanical PartsExploded View· BTR-200 TRANSMIT, Receive & Audio CIRCUIT,BOARDS Transmit Board Q50l Q502 Q503 Device 1====-r===r===r====jPI=N=N=U=rM=B=EFR==~===r==~==l1U501 Transmit Board Component Layout Foil Side +~04~@C501 Transmit Board Component Layout Component SideQ503~502 Schematic Diagram Transmit Board Version 100P~PCB Transmit Assembly Receive Board Receive Board Receive Board Page Page Q302 Q303 Q304 Q311 Q301Q309, Q311 U304 U306 U309876 U302 Voltage Tables· Receive Board Voltage Tables Receiv~ BoardU303 U305 U307 U310 550 234 123Lp~lr @R33~@R334@ a FL30~368@~ ~ ~050Schematic Diagram Receive Board Version 1 PCB Assembly ~~VC303L4~ I6i?7Receive Board Componen~Layout Foil Side Receive Board Component Layout Component Side VersionCJl~VOB Frequency Dependent Components TablePCB Receive Assembly PCB Receive Assembly PCB Receive Assembly 878522M VC301-VC308 GAASFET, NE PCB Receive Assembly Auxiliary Input Amplifier Receive ExpandersMicrophone Amplifier Intercom DriverHeadset and Speaker Amplifiers Power SupplyIntercom Input Transmit Mixer and Filter29/3-30 Blank Block Diagram Versions 1 ToI Ov· +0 0+~OEg+0 Rl~63 jRl02 \.AJAudio Board Component Layout Foil Side Versions 1 UrI ~R17JHEAO~.~22C113Jo Schematic Diagram Audio Board VersionR1,~ ~C-\1ilBlI.0U~r.VY..,R137LI~-.=Joqa ~.C·@5It Details of Board Differences Between Versions 1DCD R182 C142 ~0113 ~S~!~~lll CJC~5 +~87Audio Board Component Layout Foil Side Versions 3, 4,~B~~9 ~I~ ~4~ ~4SC2~~~R230-------L.jN,-.L!~2.-.L-.-H R21~1Daoa ~Ms~ CI6~~~EM32 ~ R224 E I fJJ~F~IR~~~~199r~ C117H!f-V1\M,pI~£.jl,ltI1Ir-1N+--J ~1~1~2 +lQJl~iPCB Audio Assembly, 878520 Versions 1 thru PCB Audio Assembly 878520 Versions 1 thru Rln·2 Rln36Tioi Display Board Component Layout Foil Side Display Board Component Layout Component ViewTELEX@

BTR-200 Series specifications

The Telex BTR-200 Series is a well-regarded solution in the realm of wireless intercom systems, widely utilized in broadcast, film, and live event production settings. Renowned for its reliability, user-friendly interface, and robust performance, the BTR-200 Series has become a staple for professionals seeking efficient communication solutions.

One of the standout features of the BTR-200 Series is its frequency agility. The system operates in the UHF band, allowing users to switch frequencies to avoid interference from other wireless devices. This adaptability is crucial in environments where multiple wireless systems operate simultaneously. Users can easily reprogram frequencies to ensure clear and uninterrupted communication among team members.

Another key characteristic of the BTR-200 Series is its impressive range. The systems can provide coverage up to 1,000 feet in line-of-sight applications, making it suitable for large venues. This extensive range ensures that communication remains intact even in expansive settings, such as concert halls or outdoor arenas. Additionally, the enhanced RF performance ensures minimal dropouts, contributing to seamless communication.

The BTR-200 Series also distinguishes itself with its digital circuitry, which enhances audio clarity and reduces noise. This reliance on advanced technology results in crisp communication that is essential for coordinating complex productions. The system also features a low-latency design, which is particularly valuable in live performance settings where timing is crucial.

In terms of user interface, the BTR-200 Series is engineered with simplicity in mind. The beltpack units and base station feature intuitive controls that enable quick adjustments, making them easy to operate even under the pressures of a production environment. Each beltpack supports individual volume control, allowing users to customize their audio experience according to their preference.

Moreover, the BTR-200 Series is built for durability and long-lasting operation. The robust construction of its components ensures reliability, even in challenging environments. Rechargeable batteries offer extended operating time while reducing the need for constant replacements.

In summary, the Telex BTR-200 Series stands out for its frequency agility, extensive range, digital audio clarity, user-friendly interface, and durable build quality. These features combined make it an ideal choice for professionals in the broadcasting and live event production industries, promoting seamless and efficient communication essential for successful operations. The BTR-200 Series remains a trusted solution, proving its worth time and again in various high-pressure scenarios.