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Visualization

Oscilloscope (8 Channel)

Use DigiSim Logic Lab's 8-channel Oscilloscope to inspect eight digital traces, buses, and control sequences with event-timed capture and configurable triggering.

Overview

The DigiSim Logic Lab 8-channel Oscilloscope is a passive digital timing instrument for comparing a bus or a group of control signals. It records D0–D7 against simulator time without driving the circuit.

Exact DigiSim.io Implementation

The capture service receives published simulator transitions rather than polling at a fixed sample rate. Each edge carries a nanosecond timestamp and one of four digital states: LOW, HIGH, unknown (X), or high impedance (Z). Each channel retains up to 8,192 edges in a ring buffer.

Timebase and Trigger Controls

  • The horizontal timebase follows a 1-2-5 sequence from 1 ns/div to 5 s/div.
  • ROLL, AUTO, NORMAL, and SINGLE provide continuous, automatically triggered, normally triggered, and one-shot acquisition modes.
  • Edge triggering accepts a selected channel and a rising, falling, or either edge, with adjustable trigger position and holdoff.
  • The optional pattern trigger compares D0–D7 with a mask of 0, 1, and don't-care values. All non-masked inputs must be connected and in definite states for a match.
  • Each trace can be shown or hidden independently; visibility does not alter the connected signal.

Interpretation and Limits

  • The instrument displays digital states and simulator timing. It does not measure analog voltage, probe loading, physical propagation delay, or protocol fields.
  • Pattern matching is a level condition evaluated after same-delta signal updates; it is not a serial protocol decoder.
  • A ring-buffer overflow means older retained edges were discarded. It does not indicate an electrical overload.

Learning Path

Prerequisites

Next Steps

Frequently Asked Questions

When do I need 8 channels?

The eight D0–D7 inputs are passive probes with independent visibility controls. The 8-channel model supports edge triggering and an optional 0/1/don't-care pattern trigger across the channels; it does not decode a bus protocol automatically.

Does the 8-channel scope use the same acquisition model?

Yes. It records LOW, HIGH, X, and Z transitions in simulator time and provides the same 1 ns/div to 5 s/div timebase range and ROLL, AUTO, NORMAL, and SINGLE modes as the 2-channel scope. It does not sample analog voltage.