Design to simulate pickup at different RPM to test TCI, ACCDI, DCCDI, Tachometers, Power valves and ignition coils.
And to extract the advance curve from a Digital TCI or CDI.
- Range 1000 to 24,000RPM in 24 steps.
- Simulate a VR (Variable Reluctance AKA Pickup coil) with both polarities: Positive than Negative or the opposite.
- Pickup “Position” relative to TDC is adjustable from 0 to 60 degrees BTDC.
- Simulate a rotor spoke length that define the delay between first and second pulse.
The “length” is adjustable from 0 to 45 degrees.
The simulated pickup signal is 30Vpp (+15v and -15v) or can be reduced to 20Vpp (+10v -10v) with jumper N°2.
If the CDI/TCI pickup input is highly capacitive, use jumper N°1 (L for Load) to connect a pull down resistor on the circuit.
3 + 4: 1st N then P
5 + 6: 1st P then N
4 + 5: 1st N then N
6 : P
4 : N
MEASURE ADVANCE TIMING.
The most advanced feature!
- With the help of a Capacitive Probe hooked to the sparkplug wire, this tester can measure the time that goes by between transmitted pickup and received spark and display the advance timing of the TCI/CDI under test.
To test ACCDI you will need an external High Voltage power supply (not provided).
- During extraction, Advance timing is exported in CSV format on live via Serial USB at 115200-N-8-1
- Detect RPM limiter
- Can test Digital CDI/TCI (Electronic ignitions with processor inside.)
Cannot test simple analog CDI like GY6 (They only use resistors and capacitors and the advance timing comes mainly from the voltage of the VR, not from inside those CDI.)
- Better accuracy is reached when WIDth is set to “0“.
Tester comes along with a simple but useful ONE WAY scope.
- Display the pickup signal generated.
- Display the sparkplug signal captured by the capacitive probe.
- Can be used as a simple scope (BW: 1KHz.)
- AC Input from 2Vac until 100Vac. AC only (no DC)
- Scope display time per division
- Automatic Frequency measurement.
- RPM display.
- Display can be frozen with HOLD button in order to analyze, take photo, etc….
- A simple timebase is available to adjust Horizontal position from 0.8ms to 80ms/div
(Zoom IN & OUT buttons)
- Automatic Trigger to stabilize trace.
- Persistence function to show random events or voltage/frequency changes.
- Values display can be turned off.
- Test pin puts out a 100Hz test square signal to test probe and scope.
- Measure the Voltage of a signal.
- View the scope on a PC.
With the help of “Serial oscilloscope” software, connect the scope to a PC and enjoy a big display and more functionalities:
(USB at 115200Kb, BandWidth:200Hz)
Warning when applying high voltage:
The PCB ground will be connected to the voltage!
The board MUST be isolated (Use a plastic box)
DON’T touch the input selectors when applying voltage!
ALWAYS disconnect input BEFORE moving jumpers.
AC-CDIs need a charging coil that provide 100 to 300Volts.
No HV source is provided with this Analyser.
You can use the main power toward a isolation transformer (See Wiring).
But keep in mind the main frequency will limit the RPM reachable by the ACCDI.
(50Hz = 3000rpm max, 60Hz = 3600rpm max)
|Parts list||Check voltage.||components placement.||Connections for testing an ACCDI|
- How a pickup works?
Testing a Analog CDI (Not able to extract the advance timing as no proc inside.):
Scope the Analog CDI v2.4:
Why the tester shows: advance = -350°?
Minus sign mean that spark appear ATDC (After TDC) So it’s no more advance but it’s retard.
Extracting advance curve from a Digital CDI:
- Version 4.0:
- Initial release as an upgrade of CDI tester V3.
- 1000 to 10,000rpm
- Pickup position : 10 to 60deg BTDC
- Version 4.1:
- Upgrade : works from 1000 to 24,000rpm
- Pickup position : 0 to 60deg BTDC
- Export Advance timing in CSV
- Version 4.2:
- Divide power drain by 2. No more heatsink needed.
- Change in CSV export.
- Display advance in positive format.
- Version 4.3:
- Smaller pulses width at high rpm.
- Increased accuracy.
- Version 4.0: