Buchla 245t has two sections: Pulser and Stored Voltage Stages. Pulser Section:Pulse- output generates a pulse with a 10V initial stage that lasts for 100uSec (0.1ms) followed by a5V gate stage length determined by the Pulse Length control.Ref- outputs a ramp wave that descends from 10V to 0V at the rate of the pulser.Pulse Length- sets the length of the 5V stage of the pulse from 0 to 100% of the duty cycle.External CV control is added to the knob setting.Internal Time- controls the period of the pulser output from 10 seconds (full CW) to a fewmilliseconds (full CCW).External CV has an attenuverted control to either add (CW) or subtract(CCW) external voltage from the knob setting.External CV can increase the maximum andminimum period of the pulser to approximately 50 seconds to 1ms (1kHz) (*).Start- Pressing this button starts generating a pulse and reference ramp at those outputs. A pulseon the Start input also begins pulser generation.Stop- Pressing the button or sending a pulse to the input jack stops the pulser if already running.Additional presses or pulses to the Stop input will manually trigger a single pulse output from thepulser. Stored Voltage Stages:Advance In- accepts a pulse from the Pulser or external source(281t EOC for example) and each pulse advances to the next stagefrom 1 to 5.The switches in the Stage Select section can controlthe number of stages played back.Note, with all stage switches in down position playback will beon hold.Stage Gate Output- Each stage has a dedicated gate output thatproduces a high voltage (10V) when that stage is active. This gatecan be used to trigger events like envelopes.Out- the voltage output of the current active stage.Each of theoutputs has an independent voltage.Stored Voltages- 4 rows of 5 locations of stored analog voltagesset by a control knob.Analog(In)-CVinput(0-10V)thataddressesthestages.When the voltage is above the Off range the Analog input is activeand the Advance and Stage Select Inputs are disabled.Ranges are approximately(*): Off (0V - 0.75V), Stage 1 (0.75V - 2.5V)Stage 2 (2.5V to 4.25V) Stage 3 (4.25V to 6V) Stage 4 (6V to 7.75V)Stage 5 (7.75V to 10V)Stage Select Inputs- Pulses on these 5 inputs will immediately setthe active Stage to the corresponding input.Using these inputscan create a type of analog preset memory for 4 CV settings inyour modular system.Stage Switches- These 4 switches enable or disable the stagetransitions. Switch 1 controls Stage 1 to 2 transition, switch 2 Stage2 to 3 and so on. By disabling a stage transition the length of thesequence can be shortened or captured. Specifications: Advance In0 - 10VAnalog In0 - 10VStage Select In0 - 10VStored Voltage Out0 - 10VStage Gate Out0 - 10VSize: 30HP - Depth: 25mmPower: +12V 63mA / -12V 28mA
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