Gunga,
The driver diameter is 19 mm.
The LED current is dictated by two variables:
1. The maximum or 100% output current that the driver is calibrated to (see setting 16 of the setup). This value can be set in 100 mA increments. In the stock configuration this is set to about 1400 mA.
2. The actual brightness level (1 through 21). These brightness levels are setting the output current relative to the above maximum output current. If you look at the graph on page 8 of the manual you can see the current in % of the maximum output current that each of the 21 brightness levels will produce. The 21 brightness levels are scaled logarithmically, that means in visual intensity the step from one level to the next is about the same. For the current this means increasing step sizes the higher the output goes.
What this means for your question: Brightness level 1 is about 0.3% of the maximum output current. In case of the stock 1400 mA maximum output this is about 7 mA. This is however close to the absolute minimum output current that can be achieved with the driver, so the lowest brightness level will not be much lower even if the maximum output current was calibrated to only a few 100 mA.
This leads me to hjdca's question:
Generally the output is true current regulated, there is no PWM in the output with one EXCEPTION: For LED currents smaller than 20 mA the driver does resort to PWM. Otherwise the output would not be visually stable. This PWM uses a frequency of 400 Hz, which you should not see as long no quick movements happen. This was a necessary compromise due to the limits of the hardware, one that hopefully is not going to be a problem for most. Again, this only applies to the lowest output levels below 20 mA.
Thank you for the feedback, i will update the HiveLD web page soon with some of the questions that came up so far.
The driver diameter is 19 mm.
The LED current is dictated by two variables:
1. The maximum or 100% output current that the driver is calibrated to (see setting 16 of the setup). This value can be set in 100 mA increments. In the stock configuration this is set to about 1400 mA.
2. The actual brightness level (1 through 21). These brightness levels are setting the output current relative to the above maximum output current. If you look at the graph on page 8 of the manual you can see the current in % of the maximum output current that each of the 21 brightness levels will produce. The 21 brightness levels are scaled logarithmically, that means in visual intensity the step from one level to the next is about the same. For the current this means increasing step sizes the higher the output goes.
What this means for your question: Brightness level 1 is about 0.3% of the maximum output current. In case of the stock 1400 mA maximum output this is about 7 mA. This is however close to the absolute minimum output current that can be achieved with the driver, so the lowest brightness level will not be much lower even if the maximum output current was calibrated to only a few 100 mA.
This leads me to hjdca's question:
Generally the output is true current regulated, there is no PWM in the output with one EXCEPTION: For LED currents smaller than 20 mA the driver does resort to PWM. Otherwise the output would not be visually stable. This PWM uses a frequency of 400 Hz, which you should not see as long no quick movements happen. This was a necessary compromise due to the limits of the hardware, one that hopefully is not going to be a problem for most. Again, this only applies to the lowest output levels below 20 mA.
Thank you for the feedback, i will update the HiveLD web page soon with some of the questions that came up so far.