DOEPFER CV/Gate-Keyboard A-100CGK User’s Guide www.doepfer.
OPERATING AND SAFETY INSTRUCTIONS Please follow the given instructions for use of the instrument because this will guarantee correct instrument operation. Due to the fact that these instructions touch on Product Liability, it is absolutely imperative that they be read carefully. Any claim for defect will be rejected if one or more of the items was observed. Disregard of the instructions can endanger warranty.
Introduction The A-100CGK is a monophonic keyboard with CV and Gate outputs. The main application is the control of an A-100 system but even other modular systems or synthesizers can be controlled provided that they use the 1V/octave standard. In addition the A-100CGK has a Midi output. The A-100CGK is a available as a ready built device with black metal case and a four octave keyboard or as an OEM module.
• • • • • • • available menus/buttons with LEDs o Mode: selects the key for CV1 when more than one key is operated ar the same time lowest key priority highest key priority last key priority o Transpose, 2 different transpose modes can be selected in the configuration menu 0/+1 octave or 0...+12 semitones o Retrigger: this parameter controls the Gate behaviour while legato play (i.e.
Connections n o p q r s t ❽ A-100CGK Rear view n 9V DC (power supply) A-100CGK does not have a built-in power supply. Instead it uses a plug-in type external power supply (AC adapter). One reason for this feature is electrical safety. Keeping danger voltages (mains) out of the A-100CGK increases the electrical safety. Another reason for the external power supply is the fact that line voltages and plug types vary considerably from country to country.
q A-100 Connector This 9 pin sub-D connector can be used to establish the connection between the A100CGK and an A-100 system with one cable only by means of the planned A100CGK adapter module. The connector carries the signals Gate, CV1, CV2, CV3 and midi out. In addition the A-100CGK is powered by the power supply of the A-100 system if the adapter board is used. The power supply connector n is then no longer used. r Gate This 3,5 mm jack socket is the gate output of the A-100CGK.
t CV2 This 3,5 mm jack socket is the control voltage output of the A-100CGK that is controlled by the velocity of the key pressed on the keyboard. The voltage range is 0...+5V. There are no fixed rules how to connect this socket to CV inputs of A-100 modules. For example it can be connected to the CV input of a VCA (voltage controlled amplifier, e.g. A-130, A-131, A-132-x) to control the loudness of a patch by the keyboard velocity.
Operation A-100CGK is switched on by plugging the AC adapter into a wall outlet and connecting it to the appropriate power supply socket n. There is no separate ON/OFF switch. After power on the six LEDs will light up for a short time and the display shows the software version (e.g. 100 for version 1.00). Otherwise the AC adapter used is not suitable, has the wrong polarity or does not work. Controls Display: 3 digit LED display Six buttons with corresponding LEDs: • four to select a menu (MODE, TRANSP.
These menus are available: MODE This menu is used to select the assign mode, i.e. the rule which key is used to generate the control voltage CV1 if two or more keys are operated at the same time. Older monophonic synthesizers had normally one fixed assign mode. In the A100CGK one can select between these three assign modes: Display HIP Function Hight Note Polarity LOP Lowt Note Polarity LSt Last Note Polarity Explanation The highest currently pressed key is used to generate CV1.
Configuration Mode: Adjustment of basic parameters Remark: If you have ordered the A-100CGK with metal case and 4 octaves keyboard, and want to use it in combination with the A-100 system it is not necessary to call up the configuration mode as the factory settings are chosen exactly for this application – unless you want to change the transpose type. Additional basic parameters are adjusted in a special configuration mode and include parameters that are normally fixed, i.e.
If the jumper is removed the gate output has S-Trig or switching trigger function, i.e. the gate terminal is connected to GND (instead of a voltage output). This function have most of the Moog devices. But from our experience they work also with +5V gate voltage and inverted gate polarity so that it is not necessary to change the jumper setting (without obligation). If the device connected to the gate output uses voltage gate but does not trigger probably the level of the gate voltage is not sufficient.
Doepfer Musikelektronik www.doepfer.com © 2008 by Doepfer Musikelektronik GmbH Geigerstr. 13 82166 Graefelfing Germany Phone: #49 89 89809510 Fax: #49 89 89809511 Web Site: www.doepfer.de Email: sales@doepfer.
