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LECTROSONICS IFB DCHT Portable Digital Stereo Transmitter

משדר IFB חדש מבית Lectrosonics המאפשר עבודה עם 2 ערוצי סאונד במקביל, בטווח תדרים נרחב מאוד (Block 21-23) ה-DCHT יודע לקבל Analog ,Mic, Line, Audio Digital ובנוסף ניתן לחבר 2 יציאות מהמיקסר במקביל ע"י כבל Y המגיע בערכה. ה-DCHT יודע לעבוד גם עם הדגמים הקודמים של ה-R1a ,IFB בשונה מהדגם הקודם ה-DCHT מגיע עם מסך וכפתורים לשליטה בתפריט אשר משדרגים משמעותית את נוחות התפעול ב-IFB.
  • UHF Band 470.1-607.95 BLK 21-23
  • Secure 256-Bit Encryption
  • 10, 25, or 50mW Selectable RF Power
  • Up to 51 dB of Gain in 1 dB Steps
  • DSP-Controlled Input Limiter
  • TA6M Jack for AES3 or Analog Mic/Line In
  • Powered via AA Batteries
  • Battery Life up to 5 Hours
  • Aluminum Housing with Belt Clip
מק"ט WIR-DCH
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The new DCHT unit is designed for use in film and TV production as both a wireless audio link from a bag or cart system to cameras, and as a portable IFB transmitter paired with the Duet digital wireless M2R receiver packs.
The DCHT accepts two channels of mic or line level analog signals or an AES digital signal from a mixer, and transmits to the receiver or receivers in a pure digital format. The digital architecture of the new DCHT is a third-generation design with specially developed, high-efficiency circuitry for extended operating time on two AA batteries.

Frequencies
The DCHT can tune across the available UHF TV band from 470.100 to 607.950 MHz in 100 kHz or 25 kHz steps, offering more than 6000 frequencies. The RF output can be set to 10, 25 or 50 mW, thus providing flexibility in terms of operating range for the intended application. The digital architecture allows for AES256-CTR encryption for applications where content security is a concern.

Sound Quality
Studio quality, stereo audio performance is assured by high-quality components in the preamp, a wide range of input gain adjustment, and DSP-controlled limiting. Input connections and settings are included for any lavaliere microphone, dynamic microphones, and line-level inputs. Input gain is adjustable over a 51 dB range in 1 dB steps to allow an exact match to the source signal level, maximizing the dynamic range and signal to noise ratio of the system. Accessory input adapter cables are available to handle the variety of sources likely to be used with the DCHT. The 80 dB+ stereo separation between the two audio channels allows two separate mono feeds to be transmitted on a single RF carrier, reducing the number of carriers by half when compared to an analog IFB system.

Built
The DCHT can be powered either with two AA batteries, or with external DC using the optional LTBATELIM accessory. A 2-way infrared port on top of the unit provides quick setup for associated receivers, while firmware updates are made via the USB port on the side panel of the housing. A programmable switch on the top panel can be configured as power on/off, as an audio mute, or bypassed altogether. The DCHT housing is constructed of solid machined aluminum with a special hardened coating for lasting ruggedness. Dimensions are 3.45 x 2.44 x .742 inches (88 x 62 x 19 mm) and the weight of the unit is 6.5 oz. (184 g) with batteries and supplied wire belt clip.

  • Tunes in coarse or fine steps across entire UHF frequency range from 470.1 to 607.95 MHz
  • 256-bit encryption (AES 256-CTR) for applications with high-level security
  • Selectable RF power at 10, 25, or 50mW
  • TA6M jack accepts two mic- or line-level analog signals, or a 2-channel AES3 digital feed via a variety of adapter cables (available separately)
  • Analog inputs can be linked for identical gain when used with a stereo source, or operate independently with individual settings
  • Input gain is adjustable over a 51 dB range in 1 dB steps to allow an exact match to the input signal level, maximizing the dynamic range and signal-to-noise ratio
  • Accommodates lavalier microphones, dynamic microphones, or line-level signals
  • Side-panel USB port for easy firmware updates
  • Compatible with Duet M2R receiver
  • Programmable switch can be configured as a mute switch, a power on/off switch, or be bypassed
  • Red/green LEDs provide audio level indications from -20 dB to the onset of limiting for each channel
  • Solid machined aluminum housing finished with a dark, ultra-hard, electroless nickel finish
  • Secure stainless spring-wire belt clip is easily removed and attached without tools (alternative spring-loaded belt clip available separately)
  • Machined aluminum battery door is hinged to the housing, and latches securely to prevent accidental opening even if the DCHT is dropped
  • Set up and adjustments are easily accessible through a backlit LCD, membrane switches, and an intuitive menu structure

 

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