Leprecon VX Dimmer - Manual (Page 9)

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5.2. Test Switch
The proper connection and operation of the dimmer circuits can be tested without a control
console by using the Test switch. Pushing in the Test switch will turn on the dimmer channel to
allow lamps and load patching to be verified. Push the "Test" switch again to return it to the out
position, and turn the channel off again.
The "Test" switch is a hard wired function at the output stage of the dimmer. For this reason, the
"Test" switches will continue to operate even if the control electronics are disabled. This fail-safe
feature can be very important if the control console or dimmer electronics are disabled.
5.3. Output LED
This green LED is connected to the output of the dimmer circuit. When lighted, it indicates that
voltage is present at the load. Any condition that turns on the load will light the LED; Test switch
on, control signal present, or dimmer malfunction. In conjunction with the other indicator, the
Output LED can be used to troubleshoot system problems quickly.
5.4. Error LED
Each channel of the VX dimmer includes an "Error" LED that when lighted indicates one of
several improper conditions. These conditions are easy to understand, the dimmer has no output
when it should, or the dimmer has output when it should not. The causes are listed below:
a) Breaker open - no power applied to the channel.
b) No Load - lamp disconnected or burned out.
c) Test - Channel is at 100% because the "Test" switch is on.
d) Shorted SCR - Bad power device.
Note: No-load indication is accurate only with the control signal below 90% and the "Test" switch
in the "Off" position.
6. Scene Storage
With microprocessor based control circuitry, the VX dimmer is capable of advanced functions,
such as scene storage. Using the front panel thumbwheel and push switches, up to ten scenes
sent to the dimmer can be saved in non-volatile memory for later playback. Any DMX or analog
controller can be used to set scenes in the VX dimmer.
6.1. Recording Scenes
Scenes are programmed into the VX dimmer by sending a scene to the dimmer, specifying the
scene number to be stored, and pressing the "Enter" switch. DMX addresses starting with 600 are
used to program scenes.
1) Set the levels of the dimmer channels with any analog or DMX controller.
2) Select the scene to store with the DMX switches. Set the first DMX digit to "6" to indicate scene
storage. Set the next two digit to a number between 1 and 10.
For example, setting an address of "605" would prepare the dimmer to store scene 5.