: Features a specialized clamp for non-intrusive engine speed (RPM) readings directly from spark plug wires. Measurement Ranges : RPM : 0 to 12,000 for 4, 6, and 8-cylinder engines. Voltage : Up to 600V (AC/DC) with 0.8% DC accuracy. Dwell Angle : 0 to 180 degrees.
Works with most OBD2 vehicles (1996 and newer) and select older OBD1 models.
A 12-pin (ALDL) connector, usually located under the dashboard on the driver's side.
After analyzing thousands of forum posts from Equus 3022 owners, these questions always circle back to the manual: Equus-3022-Manual.pdf
Measures the degrees of distributor rotation during which the points remain closed. Essential for maintaining ignition timing on classic vehicles.
A proper manual provides:
or the digital readout on the 3022, which will start flashing the codes. : Features a specialized clamp for non-intrusive engine
The PDF contains a dedicated troubleshooting appendix (typically pages 46-50). Here are common issues solved only by reading the manual:
Proper care ensures the longevity and precision of your diagnostic tool.
Do you need help finding a to download the file? Are you testing a standard battery, or an AGM/Gel battery ? Dwell Angle : 0 to 180 degrees
Secure the heavy-duty alligator clip to the negative (–) battery terminal or a clean chassis ground.
This is the most common source of user confusion. The manual details the “Link” light sequence: