XLR Pin 1 Cable Testing with NTI MR-PRO

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XLR Pin 1 Cable Testing with NTI MR-PRO

Feb 10, 2009 9:01 AM

Schaan, Liechtenstein - Feb 10, 2009 - NTI has added a Pin 1 Cable Tester functionality feature to the Minirator MR-Pro. This update detects the proper connection from the cable shield or 3rd conductor wire to the XLR connector pin 1. The Minirator impedance test function measures minor capacitive differences between the two wires and the shielding of an XLR audio cable, thus senses false pin 1 connections accurately.

The NTI MR-PRO detects the correct connection from the cable shield to pin 1 and analyzes a connected audio cable for all the individual impedances between pins 1, 2 and 3. A properly wired XLR cable is a nearly perfect balanced device. An audio cable with incorrect shield connections results in an unbalanced capacitive load at pin 2 and pin 3 in relation to pin 1, resulting in different impedance readings at pin 2 compared to pin 3. The Minirator measures this capacitive difference of the connected audio cable, indicating an incorrect shielding connection on the MR-Pro display.

Permanently installed audio cables can be traced with the cable test plug accessory.

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