A "Do It Youself" PC Digital Scope.
Characteristics.
- Single channel.
- 8 bits resolution.
- 20KS/sec sample rate.
- 1Mohm input resistance.
- Suitable for x10 scope probe.
- Continue and Low frequency signals only.
- 2Khz bandwidth (sample_rate / 10)
- Voltage Ranges DC: 0 to +5 V or 0 to +50 V
- Voltage Ranges AC: ±2,5 V or ±25 V
- Overload protection: ±30 V or ±300 V
- Accuracy ±1%
- Require no external power supply
- Use the power from the PC parallel printer port
- BNC input
- Easily portable
- Very low cost
- Compatible with the great software from http://www.picotech.com
- QBASIC and MS-DOS software
- Linux driver
-
Snapshots
Download.
| PC oscilloscope |
V4.0 |
| Schema | schema.pdf |
| Partlist | partlist.txt |
| Printed Circuit Board | board.pdf |
| Eagle4.15 files | eagle_files.zip |
Settings
This oscilloscope based on TLC548
(8bits), is fully compatible with PicoScope softwares
(Picoscope, Picolog and
Enviromon)
and ADC12 driver
(adc1032.dll).
Registered users of PicoScope oscilloscopes can use their PicoScope software with just a single setting:
| File/Setup.../Converter/ choice ADC
Type= ADC10 That's all! |
|
| Settings/Custom Ranges/Add a Custom
Ranges (for AC) optional |
|
| Select the AC setting if needed. |  |
Pictures.
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Links.
TLC548 and LM336Z2.5 are available by www.gotronic.fr
Interface LTC1298 with Standard Parallel Port
DSO
USB 40 kHz
DSO USB 200 kHz
Versionning.
- Version 1.0:
- Initial release based on ADC0831, 8bits, 15KS/sec, 200Kohm input impedance.
- Partially compatible with PicoScope softwares.
- Version 1.9:
- Correction of the schematic and PCB (error on AC and x5 position)
- Version 2.0:
- Modification of the PCB
- Version 3.0:
- Vref=2.5volt based on LM336
- Adding D1 to protect the computer.
- Input impedance of 1Mohm in AC position.
- Modification of the PCB.
- Version 4.0:
- Based on TLC548, 8bits, 20KS/sec
- Fully compatible with PicoScope softwares.
- Input impedance of 1Mohm, suitable for x10 scope probe.
- Attenuation x10
- Version 4.1:
- R7 is now 100ohm (instead of 1K) to fit some laptop