«625»
«Audio Producer»
«CET»|
Auxiliary routing units of “Profitt” Company The “Profitt” Company is the designer and manufacturer of the professional studio TV and audio broadcasting equipment and produces wide line of the auxiliary devices allowing easily to adapt the base equipment of the company (videoaudioprocessors, transcoders, coders, decoders, synchronizers, noise reducers, video & audio mixers, chroma key units, synchro-generators, devices for audio input and output in/out SDI, generators of logotypes and prompts, electronic switchboards, systems of transfer up to 18 signals SDI/ASI over single optical fibre, etc.) in any studio, both on interfaces, and on reception, transfer, distribution and backup of analog and digital video and audio signals and to provide trouble-free work, for example, at signal or power supply failure. As well as equipment of the company at whole, auxiliary devices can be made in autonomous and modular version. Modular system “CRAB”“CRAB” is a modular routing and distribution system of video and audio signals. Modules of single width (20 mm) are placed in separate cells of the cabinet (slots). The 1U cabinet contains four slots, 2U cabinet — eight slots, 3U — 16 slots. All slots are provided with united power supply line and a remote control network. System “CRAB” includes various series of the devices also intended for implementation of auxiliary tasks. One of such series is PVD-1061. Its structure includes distribution amplifiers of video signals 1×5, 1×11 with closed inputs, suppression of inphase hindrance, lightning guard and an opportunity of addition with submodules of restoration of constant component (D), cable corrector (C) and relay bypass (T) in the case of power failure. One of two proof-readers for the correction can be used: C1 or C6. C1 provides correction of distortions of cable of type PK75-4-37 in length up to 400 m. C6 is six-band equalizer providing correction of distortions in cable in length up to 2000 m depending on cable type.
For corrector C1 on the front panel of the module the controls of adjustment of amplifying Gain and correction of frequency and phase distortions EQ are brought “under groove”. For corrector C6 the adjustments are provided:
Besides the PVD-1061 series includes distribution amplifiers of pulse signals (SP) with amplitude up to 5 V in levels TTL and modules of backup of video (switchboards 2×1), intended for backup of especially important paths of video signal. Routing from main (Main) to backup (Stby) channel and back in automatic or manual mode is possible. In automatic mode at loss of a signal of basic channel there is a transition to the back-up channel, and return to the basic channel at signal occurrence is carried out. Modules are provided with closed inputs with suppression of n inphase hindrance and lightning guard, relay bypass at power supply failure can be completed with the cable corrector (C1) in the basic channel for correction of frequency, phase and peak distortions of the signal which the long cable has been passed, and additional submodules of fixing of blanking level of TV-signal (D). On the front panel of modules the following units are located:
In modules with the cable corrector on the front panel the adjustment controls (under groove) of amplifying Gain and corrections of frequency and phase distortions EQ are located additionally. In modules the remote control GPI of operating modes (Main/Auto/Stby) and the socket REM are provided. Modules can give out or accept, depending on position of the internal switch Master/Slave, steering command of routing on the backup channel. For this purpose on the back panel the socket CTRL is provided. The series includes also the module of relay switchboard of video signal 2×1 with distribution amplifier 1×3 or 1×9 with manual control over GPI or from the module of backup of video, as well as modules of the relay switchboard of impulses 2×1 with the distribution amplifier 1×3 or 1×9 with manual control over GPI or from module of backup of video.
PAD-1062 series of audio devices (with electronic symmetric input) and PAD-1063 series (with a transformer input) include:
Amplifiers are provided with symmetric inputs and outputs. Delivery of both symmetric, and asymmetrical input signals is possible. Asymmetrical and symmetric audio signals also can be removed from outputs. Various combinations of input and output signals are provided. Modules of amplifiers have lightning guard and in the case of power supply failure can be completed with additional submodule of relay bypass (T). On the front panel of the module are located the indicator of output signal level in dB (“-12”, “-6”, “-3”, “-1”, “0”, “+1”, “+4”, “+6”), the switch of graduated amplifying Level (-6, 0 and +6 dB) and regulator of smooth amplifying Fine (0…6 dB).
Modular system ProflexProflex is a multipurpose system of digital modules. It provides location of modules of single width (20 mm) in separate cells of the cabinet (slots). The 1U cabinet contains four slots, 2U — eight slots, 3U — 15 slots. For all slots in the cabinet the uniform power supply bus, uniform digital bus 4:2:2 and uniform network of remote control are built-in.
Besides other devices the Proflex includes of distribution amplifiers SDI of PDVA-3007 series and distribution amplifiers DVB-ASI/SDI of PASA-3052 series. The modules provide cable correction (EQ) and restoration of clock frequency that is necessary for transfer of digital serial video signal over long coaxial cable. Modules PDVA-3007 support both composite D2 (143 and 177 Mbit/s), and component D1 (270 and 360 Mbit/s) serial videostreams. Modules PASA-3052 is operated with signals D1, D2 and DVB-ASI. Distribution amplifiers find out and induce loss of an input SDI-signal. Base modules can be provided with the additional output PAL/NTSC needed for signal output to the monitor screen.
Modules of PCOV-3026 series are intended for backup of video signal of SDI (D1) format. They well approach for redundancy of especially important signal paths. Routing on the backup channel both in automatic, and in manual mode is possible. Routing occurs owing to the passive high-frequency relay that provides transmission of signal even at switched off power unit. Analog PAL output provides the monitor control of output signal of the basic group. The modules find out EDH-sendings and on the two-place digital indicator show the mistake quantity (during one minute, one hour) both in basic and backup channel. Indication of signal loss, mistakes of synchronization and presence even of one channel of the enclosed audio is provided. The delay of routing on the backup channel can be programmed by the user. The programmed delay of routing can reach 8 seconds. Criteria of transition to the backup channel are the following:
Module PCOV-3026—1 (of double width) has additionally two secondary passive keys for routing after the basic two more additional signals (for example, analog video signal and audio AES/EBU). With small cable lengths it can be the SDI signals also. Remote control of modules is carried out from the general network and own GPI.
Series PDDA-3106 are distribution amplifiers of audio signals AES/EBU 1×5, 1×7, 1×9. According with option the inputs and outputs are symmetric (B) with socket DB-25 (110 Ohm) or asymmetrical (coaxial) with socket BNC (75 Ohm). Modules are carried out reclocking of input signal and can work with digitization frequencies 32/44.1/48/96 kHz. Checking of data of channel conditions is carried out at the time of operation. There is also a two-channel analog symmetric control output with socket TRS (jack) (A). Modules PCOA-3105 is intended for backup of digital audio channels AES/EBU. Routing on the backup channel is possible both in automatic, and in manual mode. Routing is carried out by means of the passive relay that provides signal transmission even at the switched power unit off. The analog monitor output provides the control of presence of audio signal inside output digital stream.
On the two-digit digital indicator the mistake quantity (during one minute, one hour) both in basic and in backup channel is presented by the modules. Indication of occurrence of the basic errors on corresponding light-emitting diodes is provided. The delay of routing on the backup channel can be user programmed. The programmed delay of routing is up to 8 seconds. Remote control by modules is carried out from general network and own GPI.
The block of relay bypass PRB-097 (the switchboard 2×1) is intended for emergency bypass of analog and digital units. It is provided by three channels of relay routing and provides the routing of analog composite (PAL, SECAM) and component (YUV, RGB, Y/C) video signals, digital video (SDI and DVB-ASI) and audio AES/EBU (asymmetrical) signals. PRB-097 can be used as bypass block, and as relay switchboard 2×1. The unit is provided by input of remote control GPI. Passive auxiliary units
Manual routing panels are intended for operative nonvolatile change of video and audio signal paths. They can be installed in the base design rack “Crate” or on the special desktop console of “Crate” base of Quick Lock type. The board adapter from sockets DUB-25pin to the terminals is intended for convenience of connection of audio cable lines through terminals to the DB-25 socket. It is used with all following professional audio units of the company: distribution amplifiers; switchboards; modular systems “CRAB” and Proflex.
Cables-adapters with DUB-25pin on XLR (4 sockets) are applied to the panels of manual routing. The length of such cable is 0.5/1.0/1.5 m. The material is provided by “Profitt” Company |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Magazine:
For advertising please contact: reclama at 625-net.ru.
All the questions and offers please mail to: magazine at 625-net.ru.
Editorial board: magazine at 625-net.ru, ph./fax: +7 691 7724, 695 9588.
Electronic Mass Media registration certificate El # 77-2794.
© 2003—2009 Publishers 625. All rights reserved.