Extech Instruments CT40 Betriebsanweisung PDF herunterladen (Seite 4)

CT40- EU-EN V1.7 1/13

Operation

Transmitter and Receiver Cable Tester Operation

1. Press down the receiver’s ON/OFF switch. The upper blue display will indicate “00” and the OP

LED should light.

2. Press down the transmitter’s ON switch. The OP LED will flash.

3. Connect one of the transmitter’s alligator clips (CH1 to CH16) to each core (wire) of the cable

under test.

4. Connect the transmitter’s “COM” reference lead (black alligator) to a known common for all

cables, such as ground or cable sheath.

5. Connect the receiver’s “COM terminal” (black alligator) to the common.

6. Touch the receiver’s “input terminal” (red alligator) test lead to one core of the cable under test.

7. The number of the wire selected is indicated on the display of the receiver (1-16).

CAUTION: Do not apply over 50V (AC or DCV) to

test leads of transmitter or receiver. This

could result in permanent damage to the meter.

Continuity Beep Test

1. Press the ID TEST button down.

2. Connect the receiver’s red and black alligator clips to each end of a wire.

3. If there is continuity (resistance is less than the continuity threshold) there will be an audible

tone.

Voltage Check

1. Press the V check button down.

2. Connect both of the receiver’s alligator clips to each end of the cable under test.

3. If the display indicates “UU” then voltage is present on the cable. Locate and remove the

voltage source before proceeding with cable testing.

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Extech Instruments CT40 Betriebsanweisung Seite 4