Manufacturer
Peter Biet Computerdesign, Germany
Date
1992
Amiga
any Amiga
Interface
joystick port, RGB port
    Genlock
  • external genlock with digital signal processor and RGB splitter for consumers and semi-professional use, connected to the RGB and joystick port of the Amiga
  • phase-locked chroma subcarrier
  • integrated RGB splitter to enhance video quality and video digitizer support
  • allows color correction via controls at the front panel - color, contrast and brightness
  • supported effects: fading, superimposing, inverse superimposing - controllable via controls at the front panel, effects can be run automatically
  • input connectors:
    • 1× RCA Composite Video In
    • 1× Mini DIN Y/C (S-VHS) Video In
    • 1× 9 pin RGB Amiga Video Input
    • 1× Joystick Input
  • connection to Amiga is done via shielded RGB cable with a metal box containing an oscillator board
  • output connectors:
    • 1× RCA Composite Video Out
    • 1× Mini DIN Y/C (S-VHS) Video Out
    • 1× 9 pin RGB Bypass to attach a monitor
    • 1× RCA Composite Digitizer Video Out (RGB splitter output)
  • outputs are buffered and can be used simultaneously
  • digitizer output allows connecting a slow scan video digitizer that digitizes in 3 passes (red, green and blue) - 3 LEDs display the current channel, the channel switching is done automatically by the software via joystick port
  • switch to disable interlace mode - the image is shown flicker-free with reduced resolution
  • 'Professional' version provides an additional RGB Bypass output for a monitor, a special synchronization circuit on the oscillator board for increased image stability, and two automatic wipe effects
  • measured composite video bandwidth is 2.5 MHz, measured Y/C bandwidth 4 MHz
  • for the 'Professional' version, the bandwidth is increased to 3.5 MHz (composite) resp. 4.5 MHz (Y/C)
  • limitations in video performance: black level does not reach 0.3V, blue and yellow levels are too high
  • metal enclosure
  • integrated 220V power supply
Peter Biet Computerdesign Brolock / Brolock Professional -  front side
front side
Peter Biet Computerdesign Brolock / Brolock Professional -  back side
back side

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