Triplett CTX590 User Manual download pdf

CONT: Test wire pair for continuity

WIRE LOCATOR ALL WIRE TYPES

MODEL CTX590

Network Test and Certification

CONTINUITY MODE

(set power switch to CONTINUITY)

Detect telephone and modem connections using the Red/Green LED

Phone pairs have a “tip” (0V) and a “ring” (-48VDC). Phones and modems typically

use the center pair of the connector (pins 4,5 in an 8 position (RJ45) jack or pins

3, 4 in a 6 position jack). 1) Connect the tone generator to the wall outlet using the

RJ11 or RJ45 plug. 2) If the LED lights, a connection could exist. A negative polarity

is normal for pins 4 and 5 (polarity is a concern with some digital systems).

Use this mode to detect whether

a pair of wires has continuity.

This test does not require the

use of the probe.

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1. Pick the pair of wires you wish to test for continuity.

2. Place the switch in the CONTINUITY position.

3.Attach the tone to the wires using either the RJ11, RJ45 or the alligator clips

4.If the Red/Green LED lights, continuity exists on the pair.

Note: You can verify whether you are in CONTINUITY mode by touching the

alligator clips together. Remember, if continuity exists across two conductors

purposely, it is called "bridging". If it is not by design, it is called a "short" circuit.

How to test for continuity using the CTX590

Network Test and Certification

RED/GREEN

LED

Switch position

LED color Tone Off Continuity

Red Positive voltage Positive voltage Yes

Green Negative voltage Negative voltage NA

Alternating AC voltage AC voltage NA

The Red/Green LED indicates voltage, polarity and continuity

Voltage, polarity and continuity tests: The Red/Green LED is active in all three

switch positions. See the following chart for the LED's meaning:

RED/GREEN LED CHART

In the TONE mode, the tone itself causes the red/green LED to indicate AC voltage (the

tone itself is an AC signal). So, for voltage/polarity tests, use the OFF position.

How to determine polarity: Positive voltage on the red clip in relation to black clip is

positiv

e polarity; as is pin 3 in relation to 4 (RJ11); and pin 4 in relation to 5 (RJ45).

When checking telephone polarity, a green LED is correct telephone polarity and

a red LED is reversed polarity.

1 2

Summary of Contents

Page 1 - RED/GREEN LED CHART

CONT: Test wire pair for continuityWIRE LOCATOR ALL WIRE TYPESTMMODEL CTX590Network Test and CertificationNetwork Test and CertificationCONTINUITY

Page 2

1.Place the Power Switch in the TONE position.2.Pick the pair of wires you wish to trace.3.Apply the tone to the wires using either the RJ11, RJ45 or

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Triplett CTX590 User Manual

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