SAMPLE AND HOLD / V.C. CLOCK / NOISE GENERATOR
MODULE 9009

FEATURES:

  • EXTERNAL SIGNAL AND TRIGGER / GATE INPUTS
  • HIGH SPEED OPERATION OF S/H FOR AUDIO PROCESSING
  • INTEGRATED VOLTAGE CONTROLLED CLOCK
  • V.C. CLOCK RANGE SWITCH ENABLES AUDIO FREQUENCY OPERATION
  • SYNC INPUT ON V.C. CLOCK ENABLES AUDIO SYNC MODE
  • V.C. CLOCK HAS THREE OUTPUTS: RAMP, SQUARE AND PULSE
  • INTEGRATED DISCRETE SEMICONDUCTOR NOISE SOURCE
  • SLOW RANDOM GENERATOR

CONSTRUCTION:

  • HIGH QUALITY ELECTRONIC COMPONENTS, HAND ASSEMBLED AND TESTED
  • MILITARY GRADE HARDWARE, POTENTIOMETERS, JACKS, KNOBS
  • HI RESOLUTION, CLEARLY LAID OUT, BLACK ANODIZED FRONT PANEL
  • SUB-MODULAR DESIGN PROVIDES EASY SERVICE, UPGRADES
  • STABLE S/H MEMORY CIRCUIT - DRIFT FREE
  • GENUINE ANALOG NOISE SOURCE

THE C.M.S. 9009 SAMPLE & HOLD MODULE IS A FUNCTIONAL CIRCUIT PACKAGE DESIGNED FOR USE IN THE C.M.S. 9000 MODULAR SYSTEM. THE MODULE CONTAINS A SAMPLE AND HOLD CIRCUIT, A NOISE GENERATOR AND A VOLTAGE CONTROLLED CLOCK. THE 9009 IS USUALLY USED TO GENERATE RANDOM OR PERIODIC STAIRCASE WAVEFORMS FOR COMPLEX MODULATION OF VCO'S, VCF'S, ETC.

A SAMPLE AND HOLD CIRCUIT HAS A SIGNAL INPUT, A SIGNAL OUTPUT AND A SAMPLE COMMAND INPUT. WHEN A PULSE IS APPLIED TO THE SAMPLE COMMAND INPUT, THE OUTPUT SIGNAL VOLTAGE ASSUMES THE SAME VALUE AS THE INPUT SIGNAL VOLTAGE. AFTER THE SAMPLE COMMAND PULSE, THE OUTPUT SIGNAL VOLTAGE WILL HOLD AT THE SAME LEVEL UNTIL ANOTHER PULSE IS APPLIED.

THE 9009 SAMPLE & HOLD CIRCUIT HAS 2 SIGNAL INPUTS. SIGNAL INPUT A IS THE EXTERNAL PORT AND HAS A JACK AND ATTENUATOR. SIGNAL INPUT B IS PREWIRED TO THE WHITE NOISE SOURCE AND ALSO HAS ITS OWN ATTENUATOR. THERE ARE 3 SAMPLE COMMAND INPUTS: INPUT A IS THE EXTERNAL PORT AND HAS A JACK AND PULSE/GATE INPUT SWITCH. INPUT B IS PREWIRED TO THE VOLTAGE CONTROLLED CLOCK PULSE AND HAS ITS OWN ENABLE SWITCH. INPUT C IS THE MANUAL TRIGGER PUSH-BUTTON. THERE ARE 2 SIGNAL OUTPUTS PROVIDED. PROCESSING VOLTAGE RANGE IS BIDIRECTIONAL AT +/-10V (20V PP). THE 9009 SAMPLE & HOLD CIRCUIT IS BUILT FOR HIGH SPEED OPERATION. THE SAMPLE COMMAND PULSE CAN BE CLOCKED AT AUDIO FREQUENCY FOR COMPLEX EFFECTS. ALSO THE SAMPLE & HOLD CIRCUIT IS CAPABLE OF PROCESSING AUDIO FOR GRANULAR DIGITAL EFFECTS.

THE VOLTAGE CONTROLLED CLOCK IS AN EXPONENTIALLY CONTROLLED VOLTAGE CONTROLLED OSCILLATOR WITH RAMP, PULSE AND SQUARE WAVE OUTPUTS. IT HAS A MAIN FREQUENCY VERNIER AND A RANGE SWITCH PERMITTING AUDIO FREQUENCY OPERATION AS WELL AS LFO MODE. IT HAS 1 CONTROL INPUT WITH ASSOCIATED JACK AND ATTENUATOR. ALSO, THERE IS AN EXTERNAL SYNC THAT FUNCTIONS AS A RESTART FOR THE CLOCK. THE SYNC FUNCTIONS IN THE AUDIO FREQUENCY RANGE PERMITTING THE 9009 VOLTAGE CONTROLLED CLOCK TO BE USED AS AN ADDITIONAL SYNC WAVEFORM GENERATOR WHEN SYNCHRONIZED TO AN EXTERNAL C.M.S. VCO PULSE WAVE.

THE NOISE GENERATOR HAS THREE INDIVIDUAL OUTPUTS: WHITE, PINK, AND SLOW RANDOM.

ELECTRICAL SPECIFICATIONS:

INPUTS:

  • SAMPLE & HOLD SIGNAL IN = +/- 10V
  • SAMPLE COMMAND INPUT = 0 TO 15V, 8 V THRESHOLD
  • CLOCK CV INPUT = APPROXIMATELY 1V PER OCTAVE
  • CLOCK SYNC INPUT = 0 TO 10V, 8V THRESHOLD

OUTPUTS:

  • SAMPLE & HOLD SIGNAL = +/- 10V ( 20V PP )
  • ALL CLOCK OUTPUTS = 0 TO +10V
  • ALL NOISE OUTPUTS = +/- 5V ( 10V PP )

e-mail: filter@discretesynthesizers.com

Phone: 912-727-2195
©2004 Phil Cirocco