User manual
6 CABLE TESTER CT100 User Manual
1. Introduction
Congratulations! With the CT100, you have purchased an indispensable tool that
enables you to easily check the most common cables used by musicians and sound
engineers. Faulty cables are a common cause of failure in live and studio situations.
This microprocessor-controlled device was designed to ensure fast, reliable problem
location. Various test modes and the included belt clip add to its exibility.
2. Cable Tester Mode
◊ Move the ON switch to the CABLE TESTER position.
Insert one end of your cable into any OUT jack of the CT100. Connect the other end of the
cable to any IN jack. The LEDs will indicate which input pins are connected to each output
pin. Additionally, the GROUNDED SHIELD LED indicates whether a XLR OUT jack’s shield is
connected to the pin 1/sleeve signal.
2.1 How to test intermittent connections
The following method allows you to detect intermittent connections caused by wire
breaks or faulty solder points. While in CABLE TESTER MODE, press RESET to store the
current cable-wiring display and to clear the INTERMITTENT LEDs. Move the cable
vigorously in all directions and watch the LEDs. Any change in wiring or break in the
signal ow will cause the LED of the corresponding input pin to light up. TheLED will
stay lit until RESET is pressed again, assuring detection of even the shortest breaks in the
signal ow. It is a good idea to repeat the test after resetting the LEDs to double-check
the initial results.
3. Installed Cable Tester Mode
This mode enables you to test cables in xed installations or situations that don’t allow
you to connect both ends of the cable to the CT100.
◊ Hold down the RESET button while moving the ON switch to the CABLE TESTER
position. The ON LED will blink to indicate that the CT100 is in INSTALLED CABLE
TESTER MODE.