When it comes to electronics there really isn't much for it to do, it just is. If any time is required it maybe more about setting up and finding the right setting that best fits or required and then leave it be. In most cases when it comes to monitors, there is hardly any required time, all you need to do is turn it on. If in perhaps a week or more goes by then it seems to dim or flat out changes, then a resetting or checking the setting should be done and once done walk away. if the problem persists then it suggests a fault or true incompatibility is present which can happen and must be dealt with or resolved. For all intents and purposes you shouldn't have to do anything other than explained above.