Doepfer MTC64 Relay Board User Manual
Page 7
Check list
If the MTC relay board does not work at the first go please check these points:
• Does the MTC64 main board alone work correctly ? Check especially the correct
Midi channel, note/program change range, mode and polarity. Please refer to the
user's manual of the MTC64 main board for details and do the basic tests with a
LED described on page 13.
• Is the MTC64 main board equipped with 74HC4094 (instead of CD4094) ? This
could happen only if an old MTC64 main board is used. For orders of MTC relay
boards together with MTC64 main boards this cannot happen.
• If the outputs of the MTC relay board behave the other way round the polarity of
the MTC64 outputs has to be changed (Jumper 5 / JP7 on main board).
• Are all ribbon cable connections between main board and relay board carried out
in the right way and is the polarity of the 10 pin ribbon cable correct ?
• Are the relay terminals (X1...X16) connected in the right way ?
- DIY Synth do-it-yourself analog synthesizer (24 pages)
- MKE Universal Midi Keyboard Electronics Kit (17 pages)
- CTM64 Contact to Midi Interface (main board) (20 pages)
- CTM64 Relay Board (8 pages)
- MTC64 Midi to Gate Interface (main board) (16 pages)
- MTC64 Output Board (transistor driver board) (4 pages)
- MTC64 Power Board (8 pages)
- Pocket Electronic (32 pages)
- Dial Electronic (12 pages)
- Wheel Electronic (16 pages)
- USB64 Universal Midi and USB Controller Electronics Kit (20 pages)
- MBP25 Midi Bass Pedal Electronics Kit (16 pages)
- MTV16 Midi-to-Voltage Interface with 16 Analog Voltage Outputs (8 pages)
- A-100 (8 pages)
- A-100AD5 +5V low cost adapter (46 pages)
- A-100(~ 40 MB) (744 pages)
- A-100CGK CV/Gate keyboard (12 pages)
- A-101-1 Vactrol Steiner Filter (6 pages)
- A-101-2 Vactrol Lowpass Gate (6 pages)
- A-101-3 Vactrol Modular Phase Filter (10 pages)
- A-101-9 Universal Vactrol Module (14 pages)
- A-102 Diode Low Pass (6 pages)
- A-104 four-fold Trautonium Formant Filter (6 pages)
- A-105 24dB SSM Low Pass (8 pages)
- A-106-1 Xtreme Lowpass/Highpass Filter (12 pages)
- A-107 Multitype Morphing Filter (18 pages)
- A-108 6/12/24/48 Formant Filter (10 pages)
- A-109 Voltage Controlled Audio Signal Processor (10 pages)
- A-110 Standard VCO (12 pages)
- A-111-1 High End VCO (14 pages)
- A-111-5 Synthesizer Voice (22 pages)
- A-112 Sampler/Wavetable Oscillator (24 pages)
- A-113 Subharmonic Oscillator (14 pages)
- A-114 Dual Ringmodulator (6 pages)
- A-115 Audio Divider (6 pages)
- A-116 VC Waveform Processor (6 pages)
- A-117 Digital Noise / 808 Source (8 pages)
- A-118 Noise/Random (6 pages)
- A-119 External Input/Envelope Follower (8 pages)
- A-120 24dB Low Pass 1 (8 pages)
- A-121 12dB Multimode VCF (10 pages)
- A-123 24dB High Pass (no longer available) (8 pages)
- A-124 Wasp Filter (8 pages)
- A-125 VC Phaser (8 pages)