Example 1 – dbx CT-3 Advanced Cable Tester User Manual

Page 7

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5

CT3

Example 1

A. Connect an XLR cable to the Send side of the CT3.
B. Switch ON the Sender (E). If any of the YELLOW LEDs light, it indicates a short in the cable. Now, connect the other end of

the cable to the Receiver side. You should see the first 3 YELLOW LEDs on the Sender and the first 3 GREEN LEDs on
the Receiver lighting in sequence and the other 5 LEDs not being lit at all.

C. Switch the Receiver (G) to Cable Test. If a battery is installed you will now hear a BEEP sound when PIN 1 is detected. (As

long as the cable is not faulty). Please note, the cable MUST have at least PIN 1 connected for the CT3 to operate properly.
You will immediately know that PIN 1 is faulty if no sound or lights are working on the CT3 during cable testing.

In this way, you are now able to split the CT3 in half (Sender and Receiver) and still see if a cable is working properly by
only looking at one side of the tester (the Receiver side).
The order in which PINs are shown in the receiver side (the GREEN LEDs) is the order in which the PINs (or wires) are
being tested and connected.)

If for example the XLR cable is wired 1, 3, 2 instead of 1, 2, 3 you would first hear the BEEP when PIN 1 is connected and
then you would see PIN 3 and then PIN 2. You would then know that the cable is not wired properly.

If for example the XLR cable is faulty with PIN 2 not connected. You would hear the BEEP for PIN 1 (and see the GREEN
PIN 1 LED lit) you would then not see LED 2 light up and then LED 3 would light up.

Warning: Do not connect cables with PHANTOM POWER already present or any kind of power passing through them�
The unit could be damaged and will not be covered by Warranty�

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