How do I use the EDI Oracle loop tester?

This article discusses how to use the EDI Oracle loop tester.

The Oracle S1E tests and troubleshoots inductive traffic loops by measuring inductance (µH), operating frequency (kHz), and changes during vehicle detection.

Key capabilities:

  • Verify operation: Confirm baseline readings and vehicle detection.
  • Identify faults: Detect open and short circuits.
  • Troubleshoot wiring: Use changes in inductance to help identify potential wire damage or leakage.
  • Confirm repairs: Reset and retune the loop, then verify normal operation.

Best Practice

Record baseline inductance and frequency when installing a new loop to simplify future troubleshooting.

Recommended Procedure

  1. Connect the Oracle S1E - Confirm a stable, plausible inductance reading
  1. Record the baseline - Document inductance in µH and frequency in kHz
  1. Test vehicle detection - Confirm the reading changes and detection activates
  1. Check for faults - Look for open- or short-circuit indications
  1. Repair and retest - Verify normal detection and stable readings
  1. Reset if required - Use Menu → Reset and verify the loop retunes successfully
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