Looking at the rear of the case, showing the 26-way IDE cable which connects to your PC's parallel port. You will probably have to make this cable yourself.
If you have ever needed to design, service or troubleshoot digital equipment, you'll know just how valuable a logic probe can be.
Well, this one goes one step further: connect it to your PC's
parallel port running Win98 and you can not only view logic states, you can
record them, save them for more analysis or comparison, print them and more.
You can also locate and store high or low-going pulses via
software latching and even disable unwanted logic highs or lows (via software).
Unlike most conventional DSOs (Digital Storage Oscilloscopes) and similar
devices, this device records true bit values - 0s and 1s - not waveforms or
voltages.
You can switch between TTL and CMOS circuitry. In TTL circuits,
which always operate from a 5V supply, any voltage less than 0.8V is considered
to be a logic "low" and any voltage greater than 2.0V is considered to be a
logic "high". Intermediate voltages are not valid.
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Features:
- Full optical isolation from
parallel port
- Fully TTL & CMOS
compatible
- Probe over-voltage
protection
- VCC reverse-polarity
protection
- Low cost and very easy to
build
- 32-bit Windows 98
based
- View and record logic
levels
- Save and open recorded
data
- Print out recorded
data
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