PLEASE NOTE: This module requires connection to the Video Sync Generator by means of a Video Sync Distribution Chain Cable which must be purchased separately.

Video Divisions includes four Preset Modes and four Count Modes.

EXT MODE

In EXT mode, the eight outputs represent eight divisions of an input signal put into the Clock input. The current count is reset via a pulse at the Reset input. When in SQ+ count mode, the outputs count one after the other in a ring, so that only 1 output is high at any time. This function is similar to a gate sequencer. In DV+ count mode, the outputs represent binary divisions /2, /4, /8, /16, /32, /64, /128, /256. While in EXT mode, the SQ- and DV- modes are identical to SQ+ and DV+, except that the input clock is blanked so that clock pulses outside the viewable area of the screen are ignored. This is useful for correcting glitches in horizontal patterns.

FRM MODE

In FRM mode, the eight outputs represent divisions of the system’s frame rate clock. The count is reset via a pulse at the Reset input. When in SQ+/SQ- count modes, the outputs count one after the other in a ring, so that only 1 output is high at any time. This function is similar to a gate sequencer. In DV+/DV- count mode, the outputs represent binary divisions /2, /4, /8, /16, /32, /64, /128, /256.

X MODE

In X mode, the eight outputs produce vertical bars. The Clock and Reset inputs control a secondary counter which offsets the primary counter, to achieve modulation. When in SQ+/SQ- count modes, the outputs count one after the other in a ring, so that only 1 output is high at any time. This function is similar to a gate sequencer. In DV+/DV- count mode, the outputs represent binary divisions /2, /4, /8, /16, /32, /64, /128, /256. In SQ+/DV+ modes, the secondary counter shifts the vertical bars to the right. In SQ-/DV- modes, the secondary counter shifts the vertical bars to the left.

Y MODE

Y mode is identical to X mode, except horizontal instead of vertical bars are produced by the outputs.

PLEASE NOTE: This module requires connection to the Video Sync Generator by means of a Video Sync Distribution Chain Cable which must be purchased separately.

The quantizer takes whatever signal is input to the classify input and splits it into eight amplitude bands distributed evenly between upper and lower threshold points. The upper and lower threshold voltages also have control voltage inputs and attenuverting controls for modulation. The output of the quantizer is a number between 0 and 7.

The sequential clock also has eight steps from 0 to 7 and functions separately from the quantizer. When a clock pulse is received, the sequential clock counts upward by one. When a reset pulse is received, the clock resets to a value of 0.

The values of the quantizer and sequencer are summed together and wrapped around, the value of this sum determines which of the eight video switches is currently active. For example, if both the quantizer and sequencer have a current value of 0, then the selected switch is also 0 (0+0=0), which is the first switch. If the value of the quantizer is 2, and the value of the sequencer is 7, then the sum wraps around and the currently selected switch is the second switch (7+2=9, 9-8=1.)

If this sounds complicated, a starter patch will make things more clear. Patch a video signal into the classify input. Monitor the SUM output. Play with the bias controls on each switch channel, and the upper/lower threshold values. Then press the Clock button and see how the amplitude bands rotate their values cyclically.

Please be aware that this module does not include time base correction, frame synchronization, or composite color decoding features. If those features are required, you will need the Color Time Base Corrector module.

PLEASE NOTE: This module requires connection to the Video Sync Generator by means of a Video Sync Distribution Chain Cable which must be purchased separately.

External Video Input Example Diagrams