![]() The Set-Function packet format consists of 9 bytes. The Set-Function command allows you to control the Display behavior at a remote site through the RS-232 port. The PC can control the Display for specific actions. If the message is received incorrectly it will send “-” (02Dh) followed by “CR” (00Dh).If the message is received correctly it will send “+” (02Bh) followed by “CR” (00Dh).Every time PC sends control command to Display, the Display shall respond as follows: PC sends to LFD command packet followed by “CR”. ![]() Slowly roll your eyes to the left, right, up, and down. This exercise reduces the risk of your eyes’ focusing ability to “lock up” after prolonged computer work.Įye exercises can help minimize eye strain. While taking breaks, users can further reduce eye strain and dryness by focusing on objects that are further away from them for 10-15 seconds, then gaze at something up close for 10-15 seconds. To reduce the risk of eye fatigue by constantly looking at the screen, look away from the screen at least every 20 minutes and gaze at a distant object (at least 20 feet away) for at least 20 seconds. ![]() Taking shorter, more frequent breaks are generally more beneficial than longer, less frequent breaks. Short breaks of at least 10 minutes are recommended after one (1) hour of continuous viewing. When viewing screens for extended periods, it is recommended to take periodic breaks from viewing.
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December 2022
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