TubeOhm De-Generator User manual

De-Generator
Assembly and alignment of the individual
components
V 1.03
as of 12.01.2020
www.tubeohm.com
1

Now that all components are soldered, chec ed and hopefully cleaned, the last step
comes.
The next step is the assembly of the single components on the motherboard and the
adjustment of motherboard and filterboard. We now have the following components:
CPU Board Filterboard
Motherboard
Pannelboard
2

Now we will build the de-generator first of all together
That's what we need:
Abstandshalter/spacer
7x5mm spacer Female/male M3
7x30 mm spacer Male /male M3
6x9mm spacer Female /male M3
2x20 Pol cable CPU to Pannelboard 2x 20 Pol cable /80 mm
1x6 Pol cable Volume Motherboard to Pannelboard Volumen cable /80mm
1x2 Pol cable Motherboard to Pannel
Board
Mic cable
2x10 pol Connector for flat ribbon
cable
4 units CPU/Panelboard
2x3 pol Connector for flat ribbon
cable
2Units volume
Cable assembly:
We need 2x20 pin for the connection of the CPU board with the Pannel Board !
And a 2x6 pole cable for the volume potentiometer.
**** CPU cables and volume cables are supplied in PCB it and complete it.
3

Here a view how the spacers have to
be screwed together with the PCBs.
The 5mm spacers come down, then
the motherboard,
then the 30 mm spacer, then the
panel board. The panelboard is
screwed with 9mm spacers.
At the 5mm and the 9mm spacers the
case will be screwed later.
Here in the picture the positions of the spacers
Installing the ilterboard
First the filterboard is put on the filterboard position.
K11 , the connector for the power switch on the motherboard must of course be short-
circuited or already connected to the ON/OFF switch. Then you can connect the
motherboard to the 12 Volt power supply.
The plug contacts are plugged into the soc ets - then chec if the plugs are all in the right
position - and not next to them.
Then push the filterboard into the soc ets correctly!
4

Here again a picture where the individual tensions lie.
Rot / red = (plus) 8Volt >>> 7,5...8,5 is OK
Grün / green = (minus)-8Volt >>> -7,5...8,2 is OK
Now the voltages on the filter board can be chec ed.
If all voltages are correct, the de-generator is switched off again and the filter board is
pulled out of the slot. Then it can be equipped with the ICs.
5

Installing the CPU Board
Now the CPU board can be plugged into the CPU board position.
Pay attention also with the CPU board to the fact that all plugs are correct in the soc ets!
6

The 2x 20 pin connecting cables are connected to the CPU board.
1:) 2x 20 pin cable from CPU Board to Pannel Board
2:) Mic Cable
3:) Volume cable
And then the CPU board is put on the motherboard.
See picture - all cables have to be plugged in this way.
Connection of the volume cable. Plug and soc et are mar ed !
7

Attention, please note that there is no short circuit between the ribbon cable and the
switching regulator.
Pay attention to the polarity of the MIC cable.
Now that all boards are in their place, the CPU board and the panel board are connected
with the two 2x20 pin cables. Furthermore the volume cable is connected from the
motherboard to the panel board. Pay attention to the mar ing of the cable and the
connector.
8

Checklist
1:) the motherboard is tested as far as possible. All voltages are correct.
The ICs are correct in the sockets ??!! Check again !
2:) the filterboard is checked, all voltages are correct, the ICs are correct in the
sockets. The filterboard is correctly plugged on the motherboard.
Please check again !
3:) the CPU board is checked by us. It should be plugged correctly on the
motherboard. Please make sure that the plug contacts are not next to the
socket !
4:) both 2x 20 pin cables are connected to the CPU board and the panel board.
The volume cable is connected to the motherboard and the panel board ! How
to plug the plugs with the markings, you see in the layout of the Mobo and the
Pannelboard .
5:) The MIC cable is connected to the motherboard and the panel board.
Ground and plus are correct.
6:) The Power Switch K11 on the motherboard is short-circuited with a jumper or
a wire bridge. *** is just the on/off switch - otherwise nothing happens ....
7:) Now place the panelboard on the 30 mm spacers and fix it with two 9 mm
spacers.
8:) The SD-Ram card with the irmware > Degenerator-golden Card < is pushed
into the slot of the CPU board. All data are on the firmware . Without the SD
RAM card nothing happens.
Last check, no short circuit anywhere? Now the device can be connected to the 12 V
power supply.
The LCD display initialises for approx. 1 second and we then receive this start
screen.
9

After 1..2 seconds the start screen automatically switches to the Preset Browser.
the de-generator is alive.
Is the pulse rate down again ?? Suuuper then first tests all controllers, encoders and
scrolls through the menus with the page encoder.
Do all eys and encoders wor ?
Although the de-generator isn't adjusted yet, you can already connect MIDI and audio and
test if a sound is coming.
If you have soldered and connected everything correctly - then you should be able to use
the
De-Generator now be playable .
The Adjustment
The following procedure
1:) first the filter board is adjusted.
2:) then the motherboard.
The adjustment of the filterboard.
Required tools - a frequency meter - or our free filter calibration tool.
The SD-Ram card with the firmware must be inserted into the slot of the CPU board !
The filter installed in the de-generator is a -stereo filter !!.
This means that the right and left filter must be adjusted in V/OKT, and then again among
each other ! Sounds complicated, but it is not.
The de-generator is switched on. Both audio soc ets are connected to one -stereo input of
the amplifier.
There are three trim potentiometers on the filterboard.
R58=Lin 1 adjusts the linearity of filter 1 in V/OKT
10