JVC BR-S811U

NOW THERE'S AN S-VHS EDITING RECORDER TRULY DESIGNED TO MEET THE NEEDS OF PROFESSIONALS - RIGHT DOWN TO THE LAST DUB Improved color, improved resolution, and S-VHS quality make JVC's BR-S811U the ideal professional editing recorder.

Quality. As the inventor of S-VHS, that's our paramount concern. And as a professional you can't afford to compromise quality. Whether you're dealing with an original recording or a fifth- generation dub. That's why you need an editing recorder capable of delivering consistent top-quality pictures, generation after generation - from the first recording to the last dub. And that's exactly what you'll get with JVC's BR-S811U Professional S-VHS Editing Recorder. Professional quality performance from start to finish.

That quality starts with the very first recording you make. Advanced S-VHS technology and sophisticated Y/C separation circuitry work together to provide a picture with more than 400 lines of horizontal resolution and clear, realistic colors. And that quality continues as you edit or dub. Color edges stay sharp and spreading is reduced by a new chroma enhancer. Newly- developed crosstalk cancellation circuitry eliminates color blur. And - with the optional SA-T411U Time Base Corrector/Noise Reducer - an advanced noise reduction system prevents any significant deterioration of the S/N ratio in multi-generation dubbing. It all adds up to a picture that looks as good on the last copy you make as it did on the first.

There's a lot more too. Like improved luminance signal frequency response. A tape-stabilizing head drum. Powerful Hi-Fi stereo sound. Systems flexibility with TBC connectors, separate Y/C and composite connectors, 45-pin parallel remote connectors, and more. A full range of professional editing functions (BR-S811U). Self-diagnostics. Automatic head cleaning. And years of reliable performance guaranteed by heavy-duty direct- drive mechanisms and rugged diecast aluminum chassis.

The BR-S811U from JVC. The first S-VHS editing recorder that's totally professional, from the first take to the last dub. Choosing it may be the most valuable decision you ever make. And the most economical.

PICTURE IMPROVEMENT TECHNOLOGY

CHROMA ENHANCEMENT

To ensure a sharper chroma edge with no color spreading even after repeated dubs, our new 11-series models incorporate a newly- developed chroma enhancer circuit which restores the chroma bandwidth lost during recording and playback. This chroma enhancing technology was developed by Faroudja Laboratories and modified for S-VHS applications. By extracting the edge of the C signal, modulating it with the differential edge of the Y signal, and then adding the resulting signal to the C signal, this circuit improves the transient time of the C signal without degrading the signal-to-noise ratio. The overall result is an improvement roughly equivalent to what would be obtained if the chroma bandwidth were expanded by a factor of three.

IMPROVED CROSSTALK CANCELLATION CIRCUITRY

While effective in a horizontal direction, conventional color crosstalk cancellation circuitry does little to eliminate the problems of vertical color blurring. The new improved crosstalk cancellation circuitry incorporated in the BR-S811U has been specially designed to prevent this problem. By comparing the current scanning line's chroma signal with the line above and the line below, then adding together the two lines that show the stronger correlation, this circuit is able to prevent vertical color blur, ensuring improved vertical resolution of the chroma signal in multi-generational dubbing.

IMPROVED LUMINANCE SIGNAL FREQUENCY RESPONSE

By improving the frequency response of the luminance signal so that it is flat up to 3 MHz, smear is reduced and response to changing pulse-like signals improved. As a result, image detail in the critical areas most apparent to the human eye is significantly enhanced and high S-VHS resolution is maintained in multi- generational dubs.

IMPROVED PICTURE STABILITY WITH TS HEAD DRUM

Picture stability is closely related to tape stability. And the most important factor in tape stability is the head drum. When the tape enters or exits a conventional head drum, there is a tendency for the tape to bump against the drum, introducing jitter to the reproduced picture. This phenomenon - referred to as "head knocking" - is eliminated by JVC's precision-machined TS (Tape Stabilizing) head drum. Featuring unique precision-cut "shoulders" to ensure smooth, bump-free contact at the tape entry and exit points, the TS head drum prevents "head-knocking" and keeps the tape running smoothly at all times. Together with a new impedance roller added to the take-up side of the tape path, this contributes to a stable, rock-steady picture with no jitter.

PERFORMANCE

S-VHS RECORDING AND PLAYBACK TECHNOLOGY

With a carrier frequency that extends up to 7 MHz and horizontal resolution exceeding 400 lines, S-VHS has proved itself a format truly capable of meeting professional needs. Pictures are sharp and clear, colors vibrant and alive. Advanced video processing circuits including a sophisticated 3-line Logical Comb Filter ensure superb basic performance and the best possible overall picture quality.

PROFESSIONAL-QUALITY EDITING FUNCTIONS

As an editing recorder designed to meet the highest professional standards, the BR-S811U is fully equipped to make sure you get the results you want. To prevent picture distortion at edit points, two rotary erase heads and a blanking switcher are provided. And to minimize edit flagging, it features both a framing servo and a highly stable horizontal phase lock.

SEPARATE Y/C INPUT/OUTPUT CONNECTORS

The BR-S811U features composite video signal inputs and outputs, as well as separate input and output connectors for direct transmission of the separate luminance (Y) and chroma (C) signals. In conjunction with the new chroma enhancer and crosstalk cancellation circuitry, this ensures strong, realistic colors with reduced color noise and blurring. Color signal deterioration in dubbing can be further suppressed by using the available Y/C 629 mode. As a result, broadcast-quality performance is maintained through as many as five generations of dubs.

A Y/C filtering technique licensed from Faroudja Laboratories Inc. is incorporated in the BR-S811U

HI-FI VHS STEREO SOUND

Using two rotary FM-audio heads to record the Hi-Fi audio signals on a separate layer of tape beneath the video track, the BR-S811U provides superb stereo sound with a dynamic range of more than 90 dB, extended frequency response of 20 Hz to 20 kHz, and undetectable wow and flutter. Separate input terminals are provided for both Hi-Fi and normal audio, making it possible to record different soundtracks on these tracks. The normal audio track is also stereo and features Dolby* noise reduction for improved sound quality. The BR-S811U features split-insert editing capabilities, allowing new signals to be independently inserted on either of the normal audio tracks. A switch is provided to turn off Hi-Fi recording, if desired.

PROFESSIONAL-STANDARD XLR BALANCED AUDIO CONNECTORS

The BR-S811U features a complete set of professional-standard XLR balanced audio connectors to ensure the highest levels of sound quality both in reception and transmission. To provide the flexibility demanded of a professional editing suite, both input and output are independent for all four channels. Input and output levels can be selected from +4 dB, 0 dB, and -6 dB.

MANUAL AUDIO/VIDEO LEVEL METERS AND CONTROLS

Featuring large, independent VU audio level meters for channels 1 and 2, together with four audio recording level controls, the BR- S811U permits easy monitoring of either the Hi-Fi or normal audio tracks, as well as separate adjustments of recording levels for Hi- Fi and normal audio tracks on channels 1 and 2. A three-position switch allows monitoring of the sound from each channel individually or from both together. For added convenience, a switchable audio limiting circuit is provided. Levels can still be controlled manually even when the limiter circuit is switched on. And, with the VIDEO AGC switch off, video signal recording levels can be controlled with reference to the video level meter which doubles as tracking meter during playback.

SMPTE TIME CODE RECORDING AND PLAYBACK

Time code capability is an essential feature of any truly professional VCR. Both units feature TIME CODE IN/OUT connectors on their rear panels. LTC (longitudinal time codes) can be recorded on the normal audio-2 track and, when the new optional SA- F911U Interface Unit with built-in time code generator/reader is used, not only is it possible to read or record time codes, it's also possible to connect an advanced 9-pin serial remote editing controller to the system.

OPERABILITY

VARIABLE-SPEED DIAL SEARCH AND JOG CONTROL

To meet your requirements for speed and precision, the BR-S811U is equipped with a large, dual concentric JOG/SHUTTLE control. Convenient and easy-to-operate, this dial permits fast, pinpoint location of edit points. Turning the outer SHUTTLE ring allows you to vary tape speed from still to 10 times normal in forward or reverse. With the inner JOG dial, the tape moves at the same speed and in the same direction as the dial is turned.

LARGE, ILLUMINATED FUNCTION BUTTONS

Color-coded for easy identification, these large, self-illuminated pushbuttons control all tape transport and editing functions.

EASY-TO-SEE LED INDICATORS

Concentrated, easy-to-see front panel LED indicators show servo lock status, CTL pulse, H-phase, time code (LTC), Dolby NR, and Hi- Fi audio.

HALF-LOADING MECHANISM

To ensure that the control head can pick up the tape's CTL pulses in any mode, the BR-S811U is equipped with a half-loading mechanism. This permits CTL pulse reading even in the FF and REW modes.

DIGITAL TIME COUNTER

Elapsed tape time is accurately measured by CTL pulse-reading and shown in hours, minutes, and seconds on the large fluorescent display. Thanks to the half-loading mechanism, even readings obtained in the FF or REW modes can be relied on.

AUTOMATIC REPEAT AND COUNTER SEARCH

To repeat a tape, set the AUTO MODE switch to FULL REPEAT before starting playback. The tape will rewind automatically as soon as it ends and repeat playback from the beginning. The same AUTO MODE switch also controls counter search.

RELIABILITY

HEAVY-DUTY MECHANISM

With independent direct-drive motors for the head drum, capstan, and reels, you can count on long-term operational reliability with minimal downtime. In addition, all critical components are mounted in a rugged diecast aluminum chassis for improved stability and protection against external shock.

SELF-DIAGNOSTIC WARNING SYSTEM

Trouble-free operation and quality recordings are ensured by a sophisticated array of microprocessor-controlled sensors and detectors. Warning codes (01 - 73) are displayed on the front panel digital display whenever a problem is detected in the drum and capstan servo system, the tape path, or the loading system. Each code corresponds to a specific problem. An AUTO OFF LED indicator is also provided.

FRONT PANEL TEST POINTS

Thanks to conveniently located front panel test points for the video head and Hi-Fi audio head output signal, test gear for performance analysis can be easily connected without having to open the unit's cover or remove it from a rack mount.

AUTOMATIC HEAD CLEANING

Clogging and head abrasion are prevented by an auto cleaning mechanism which automatically cleans the video and Hi-Fi audio heads whenever a tape is loaded or unloaded.

HOUR METER

To facilitate scheduling of inspections and preventive maintenance, an external hour meter on the rear panel shows accumulated running time up to 1000 hours.

SYSTEMS FLEXIBILITY

45-PIN REMOTE CONNECTOR

The final link in this sophisticated editing suite is the 45-pin parallel remote connector featured on each unit. This lets you connect them to a JVC editing controller such as the RM-86U or RM- G810U to form a complete editing suite. It also permits either unit to be combined with non-S-VHS source players or recorders equipped with a 45-pin connector. An advanced 9-pin serial editing controller can be connected to the system via the SA-F900U Interface Unit or SA-F911U Time Code Generator/Interface Unit. Time code-based editing is possible with the SA-F911U.

EXTERNAL SYNC INPUT AND RF OUTPUT FOR DOC

A BNC connector is provided on the rear panel for transmission of RF signals to an external dropout compensator. For external sync operation, either a composite sync or a composite video signal may be used. A TBC can also be connected to the SYNC In terminal. When combined with the SA-T411U Time Base Corrector/Noise Reducer specially designed for use with the 11-series editing system, the system not only eliminates timebase errors, but ensures higher- quality dubs with greatly-improved video and color S/N ratios.

OTHER FEATURES

- Framing servo on/off switch - Headphone jack with adjustable output level - Two VIDEO LINE OUT connectors and one separate Y/C MONITOR connector - 19-inch EIA rack mounting possible