23.Adjust T31O, T311, T312, T313, and T314 for maximum DC voltage at pin 5 of U304.

24.Set the signal generator output to 1 mV and adjust T315 for maximum audio at pin 7 of U305.

25.Adjust VR304 for 140 mV of audio at pin 7 of U305.

26.Set the signal generator output to 1 ~V and adjust VR303 to just extinguish the number 2 LED on the front panel.

27.Set the signal generator to the channel 3 fre- quency.

28.Adjust T316, TIl?, T318, T319, and T320 for _ maximum DC voltage at pin 5 of U306.

29.Set the signal generator output to 1 mV and adjust T321 for maximum audio at pin 7 of U307.

30.Adjust VR306 for 140 mV of audio at pin 7 of U307.

31.Set the signal generator output to 1 ~V and adjust VR305 to just extinguish the number 3 LED on the front panel.

32.Set the signal generator to the channel 4 fre- quency.

33.Adjust T322, T323, T324, T325 and T326 for maximum DC voltage at pin 5 of U309.

34.Set the signal generator output to 1 mV and adjust T327 for maximum audio at pin 7 of U31O.

35.Adjust VR308 for 140 mV of audio at pin 7 of U31O.

36.Set the signal generator output to 1 ~V and adjust VR307 to just extinguish the number 4 LED on the front panel.

Receive Board - 750309

 

Equipment Required:

 

lA Version 1:

Place the RF voltmeter probe tip

 

D Signal Generator

 

inside the top of L309 and adjust VC307 for a

 

 

peak indication.

 

 

D Sensitive RF Voltmeter

 

 

 

 

D Audio Distortion Meter

1B Version 2:

Place the RF voltmeter probe tip

 

D Spectrum Analyzer or VHF

inside the top of L313 and adjust VC307 and

 

 

Monitor

 

VC308 for a peak indication.

 

 

D AF Voltmeter-

 

 

 

 

 

D SINAD Meter

 

2. Connect the signal generator to a shott piece of

 

 

 

 

 

wire and set it to the oscillator frequency as

 

 

 

 

 

shown in the chart below:

 

 

 

 

 

 

3. Using either a spectrum analyzer or a VHF

 

 

 

 

 

monitor, adjust L307 for a zero beat.

 

 

 

 

 

 

 

 

Y30I

 

Oscillator

 

CHI

CH2

CH3

CH4

Marking

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

171 R905

 

182.605

 

171.905

171.045

170.245

169.505

 

 

 

 

 

 

 

 

207 R800

 

218.5

 

207.800

207.425

206.800

206.000

 

 

 

 

 

 

 

 

213 R800

 

224.5

 

213.800

213.425

212.800

212.000

 

 

 

 

 

 

 

 

3-11

Page 22
Image 22
Telex BTR-200 Series manual Receive Board

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.