{"product_id":"doepfer-a-157-trigger-sequencer-special-order","title":"Doepfer A-157 Trigger Sequencer (Module Set 1\/2\/3) (Special Order)","description":"\u003ch4\u003eSpecial Order - Estimated 4 - 8 Week Turn Around - Reserve Yours Now\u003c\/h4\u003e\n\u003cdiv class=\"uk-panel uk-margin\"\u003e\n\u003cp\u003e\u003cspan\u003eA-157 is a trigger sequencer subsystem that generates eight trigger signals controlled by a 8x16 LED\/button matrix.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003eThe subsystem contains three modules:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eA-157-1: 8 x 16 LED\/button matrix and function adressing buttons\/LEDs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA-157-2: Trigger Output module\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA-157-3: Control Inputs module\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe LED\/button matrix module A-157-1 is the core of the subsystem. It is used to set or reset the trigger event on each of the 16 steps of each of the 8 rows. In addition the buttons and LEDs of the matrix are used for other functions too (like setting the first and last step of each row or adressing the preset memory). \u003cbr\u003eThe Trigger Output module A-157-2 outputs the 8 trigger signals and has an LED display for each trigger available.\u003cbr\u003eThe Control Inputs module A-157-3 has manual controls and trigger inputs available for the basic control functions start, stop, reset and clock. In addition four functions inputs are available which will be used in future firmware versions to assign these inputs to special functions (e.g. shifting a row left or right by means of an external gate\/trigger signal or a second set of start, stop, reset and clock for individual rows).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA-157-1\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn addition to the main 8x16 matrix this modules contains also the buttons and LEDs for these functions:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMute button for each row, these buttons are planned also as submenu buttons for future firmware version\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSelect button for each row, used to address one or more rows for subsequent functions (e.g. first step, last step, shift left, shift right ...)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFunction buttons\/LEDs, the functions are divided into two levels, the second level is invoked by the SHIFT button\/LED on the buttom right position\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eThe functions without SHIFT are printed black, the SHIFT-functions are printed in reverse\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOn the front plate there are already printed some texts for future\/additional features\/functions. Mainly in the SHIFT-plane.  As long as they are not explained in the manuals  they have no function at the moment and are only placeholders for the future. Future versions of the firmware can be updated by the user via USB.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eA-157-2\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is the trigger\/gate output module that has 8 sockets with assigned LEDs available. The width of the output signal depends upon the width of the incoming clock signal, i.e. the width of the output signals is the same as the width of the incoming clock signal.\u003cbr\u003eThe level of the output signal is software controlled (i.e. not fixed to a certain value) as each outputs is equipped with a separate DAC (digital-to-analog converter).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA-157-3\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis module is the master control unit for Start, Stop, Reset and Clock. In addition four function controls and inputs are available that will be used in future firmware versions to address certain functions also from external signals (e.g. shifting a row ). Each function has a manual operated button and a control input. The voltage at each input has to be +3V... +12V to trigger the function in question.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eImportant technical note for A-157-3: The pin header JP2 at the bottom edge of the pcb is unused so far. It is labelled \"(OPTION) START\/STOP\/RESET BREAKOUT\" and is planned for a Start\/Stop\/Reset\/Clock breakout module. That's why the A-157-3 module is delivered without a cable connected to JP2 !\u003cbr\u003eDo no connect JP2 to the A-100 bus ! This will damage the A-157 modules and warranty is void ! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe three modules are internally connected via ribbon cables and can be arranged also in another layout (e.g. A-157-2\/3 on the right side of the A-157-1 or in a row above or below). The modules are available only as a complete set.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePower consumption: 80-350mA at +12V and 20mA at -12V\u003c\/p\u003e\n\u003cp\u003eDepth: 45mm\u003c\/p\u003e\n\u003cp\u003e52 HP\u003c\/p\u003e\n\u003cp\u003eCondition: New\u003cbr\u003e\u003cbr\u003eInfo from Alex4\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":48396086378666,"sku":null,"price":587.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4699\/6394\/files\/image_d2fea048-4f56-48d3-99cf-e5e9d15e282e.png?v=1781123329","url":"https:\/\/www.missionsynths.com\/products\/doepfer-a-157-trigger-sequencer-special-order","provider":"Mission Synths","version":"1.0","type":"link"}