INTRODUCTION
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JVC, the originator of the world's most popular video
format--VHS, has designed and built a VHS Hi-Fi recorder
specifically for tape duplication!  The new BR-7000U was
conceived with the anticipation of a large consumer demand for
pre-recorded VHS Hi-Fi tapes during the next few years.  And it
was conceived with the idea that people duplicating the video
cassettes would be expecting the very highest quality video and
audio reproduction from a machine designed for such a purpose.
 
The JVC BR-7000U is a departure from the conventional VHS
recorder/player in a number of ways:
 
     * It is the only VHS machine ever offered with test points
       for drum pulse, video RF, HiFi audio RF, etc. on
       the front panel--where technicians can make quick
       measurements of the deck's performance.
 
     * It has a front panel serial number and hour meter
       (5000 hours).
 
     * A trap-door is provided in the cabinet for easy head
       cleaning.
 
     * It will record a cassette with the recording safety tab
       off and provide front panel indication that it is doing
       so.
 
     * A cover is provided to prevent accidental misoperation of
       front panel controls.
 
     * Video AGC on/off switch and manual video level control are
       provided.
 
     * Heavy-duty construction utilizing a die-cast chassis and a
       direct-drive reel servo system.
 
     * Incorporation of the VHS Hi-Fi system with rotary audio
       heads.
 
WHY A VIDEO RECORDER JUST FOR DUPLICATORS?

JVC engineers visited a number of major duplication facilities
throughout the world, and it became apparent that the needs of
duplicator were unlike those of any other user of video tape
products.  There was the temptation to design an "all purpose"
 
recorder/player that would incorporate some of the features the
duplicators needed--and many features that were not needed.  But
there were already such  machines on the market, and that's not
what the duplicators were asking for.
 
Instead, JVC engineers took the ideas and suggestions of the
engineers and technicians specializing in duplication, and came
up with a VCR that was designed INSIDE and OUT especially for
them. Complete with punch-outs on the rear panel for user
modifications, and front panel test points, the BR-7000U was
designed for one application: continuous duty tape duplication in
the VHS Hi-Fi format at the Standard Play tape speed.
 
DURABILITY

The BR-7000U is based on the most advanced electronic tape
transport system available today.  The transport, mounted on a
solid die-cast aluminum chassis, utilizes direct drive reel motors.  The
head drum and capstan motors are also direct
drive.
 
EASE OF MAINTENANCE

Despite its low maintenance design, JVC engineers wanted a
recorder that technicians could keep in peak operating condition
with utmost ease.  It is for this reason that several innovations
were incorporated:
 
     1.  Front panel test points.   Provided are the following:
 
          a) Ground
          b) Drum pulse
          c) Video RF (FM carrier)
          d) Hi-Fi audio RF (FM carrier)
          e) Normal audio RF-out
 
     2.   Plug-in circuit board construction.  Most circuit
          boards are designed for quick replacement and
          can be swung out or unplugged.  In addition, a
          replaceable fuse is located on the rear panel.
 
     3.   Front panel hour meter and serial number.
          Most people wouldn't want these items on the front
          of the machine, but the BR-7000U wasn't designed
          for most people.  Duplication houses want the ability
          to quickly identify a machine and its operating hours.
          The plug-in hour meter indicates up to 5000 hours of
          head drum operation, and can be reset by simply
          un-plugging and turning around.
 
     4.   Window for tape path cleaning.  On the top cover of
          this front load machine is a trap door.  Inside,
          there is access to the head drum and tape path
          components.
 
DUPLICATOR-FRIENDLY OPERATION

The following features were asked for by the professional
duplication houses:
 
     1. Wide opening for accepting the cassette with a guide
        for easy loading and unloading of the cassette.
 
     2. At-a-glance large recording indicator (possibly the
        largest LED recording indicator in the industry!)
 
     3. Recording capability of a cassette with the safety-tab
        off.  (Bulk duplication tape is shipped and recorded
        with the safety tab already broken off.  This eliminates
        the need for the duplicator to remove the tab).
        The BR-7000U goes one step further:  A front panel LED
        tells the duplicator whether the tab is in the cassette
        or not.
 
     4. Large video/tracking and audio meters.
 
     5. A cover for operational buttons is provided which
        prevents accidental misoperation.  Since all transport
        functions are normally remote controlled, there is no
        need for the person loading and unloading tapes to
        have access to these controls.
 
     6. Video AGC on/off switch.  Provided as a convenience,
        the video recording level can be adjusted manually
        or automatically, using the AGC.  The BR-7000U is
        equipped with a video level meter.
 
OUTSTANDING PERFORMANCE

The performance of the BR-7000U is second to none!  With no
compromise either electronically or mechanically, JVC engineers
built the very best VHS machine possible.
 
     * Direct drive motors are used for the head drum, capstan,
       supply reel and take-up reel, keeping tape movement smooth
       and consistent.
 
     * Improved video processing circuitry including:
 
          - a pulse response improvement circuit
 
          - s/n improvement circuit
 
          - improved filter response
 
          - improved head resonance characteristics
 
     * Dolby B  noise reduction circuits on the normal audio
       channels.
 
     * Utilization of the "VHS Hi-Fi" audio format, incorporating
       two rotary audio heads.  Audio dynamic range is more than
       85dB, with a frequency response of 20 to 20,000 Hz.