This tester can be used instead of a line terminator to provide a simple means of checking for cable continuity.
Parts required :
1 Male 5 Pin XLR
2 270 ohm 1/2 watt resistor.
1 Bi-Color LED.
Wiring as follows :
2>-----------+------------+
| |
- -
| | | |
| | | |
| | | |
- -
| +
| |
| LED
| |
| |
| |
3>-----------+------------+
The Bi-Color led has 2 LED's (one Red and one Green) back to back in the same package. Build this into the back of a 5 pin XLR with the LED showing out of the back. To use insert into the socket that you want to test, Set all channels to 0% (Preheat also = 0) The led should glow one color. Run all chanels up to Full power (You may need to turn the dimmers off!) The LED should glow the other color. If the led fails to light in any one of the 2 above states then there is a short between one of the lines and pin 1.
Its limited but suprisingly useful!