MSSL200

2016/4/21 In order to understand the “Smart Midnight ClockDIM” function more clearly. Here provides the example to explain how to create the dimming plan in the “Smart Midnight ClockDIM” . For example, some customer has dimming plan as the following table shows: Time Output Percentage Turn on the driver—22:00 100% 22:00-02:00 75% 02:00-04:00 30% 04:00—until turn off the driver 100% Generally, the turn on time of driver is 20:00, turn off time of driver is 06:00. In order to activate the driver should be perform 3 times valid ON-OFF cycles. ① Let’s analyze customer’s requirement. Time Output Percentage Turn on the driver—22:00 100% 22:00-02:00 75% 02:00-04:00 30% 04:00—until turn off the driver 100% Turn on time is 20:00, Turn off time is 06:00 So according to customer’s requirement, the driver will keep 100% output for 2 hours (2hours=22:00-20:00, 20:00 is the turn on time, it’s real time) the driver will keep 75% output for 4hours (4hours=02:00-22:00 , it’s real time) the driver will keep 30% output for 2 hours (2hours=04:00-02:00 , it’s real time) the driver will keep 100% output for 2 hours (2hours=06:00-04:00 , it’s real time) 1 2016/4/21 ② Calculate the starting point of the dimming plan according to the virtual clock formula of “Smart Midnight ClockDIM” Virtual clock=00:00 – [T-on average/2] + Mid-point shift The Mid-point shift of Turkey equals “-10 minutes”, let’s ignore it in advance. Turn on time is 20:00, Turn off time is 06:00; So the operating time equals 10 hours. Virtual clock=00:00 – 10/2 hours=19:00 PM 19:00PM is the starting point of the dimming plan. ③ Calculate the ending point of the dimming plan according to operating time As previous said the starting point of the dimming plan is 19:00 PM, the operating time is 10hours, so the ending point of the dimming plan should 05:00 AM; 05:00 AM= 19:00 PM + 10 hours 2 2016/4/21 ④ Calculate the valid time area in the dimming plan As previous said the starting point of the dimming plan is 19:00 PM, the operating time is 10hours, the ending point of the dimming plan should 05:00 AM; So the valid time are in the dimming plan should be 19:00 PM~05:00 AM The most important point is that 19:00 is the starting point in the dimming plan, you can regard it as turn on driver. 05:00 is the ending point in the dimming plan, you can regard it as turn off driver. ⑤ Draw the dimming plan for “Turn on the driver—22:00, 100% output” As you said the turn on time is 20:00 generally. So it means the driver should keep 100% output for 2hours after turn on the driver. Because the starting point in the dimming plan is 19:00, so we should draw 100% output during 19:00-21:00. 21:00- 19:00= 2 hours For above figure, you can regard 19:00 (starting point) as that the driver is turned on. It will keep 100% output for 2hours, so the second point should be 21:00. 21:00-19:00=2 hours 3 2016/4/21 ⑥ Draw the dimming plan for “22:00-02:00, 75% output” The second point in the dimming plan is 21:00, the driver should output 75% for 4hours(4hours=02:00-22:00), so the third point in the dimming plan should be 01:00. For above figure, the driver will output 75% for 4hours, after it outputs 100% for 2hours. ⑥ Draw the dimming plan for “02:00-04:00, 30% output” The third point in the dimming plan is 01:00, the driver should output 30% for 2hours(4hours=04:00-02:00), so the fourth point in the dimming plan should be 03:00. For above figure, the driver will output 30% for 2hours, after it outputs 100% for 2hours, outputs 75% for 4hours 4 2016/4/21 ⑦ Draw the dimming plan for “04:00—until turn off the driver, 100%” The fourth point in the dimming plan is 03:00, and then the driver should output 100% for 2hours(2hours=06:0004:00, as you said the turn off time is 06:00 generally ), so the fifth point in the dimming plan should be 05:00. For above figure, the driver will output 100% for 2hours, after it outputs 100% for 2hours, outputs 75% for 4hours, outputs 30% for 2hours ⑧ The final dimming plan 5 2016/4/21 6