Systems, methods, and devices are provided for maintaining a target white point on a light emitting diode based backlight. The method also includes the steps of determining whether the signal quality is acceptable and adjusting one of the first transmission power or the first transmission speed based on whether the signal quality is acceptable. Also, provided is an electrophotographic photoreceptor that not only exhibits high sensitivity but also has little fluctuation in sensitivity for a humidity change in a use environment. The monitoring station can communicatively couple with the monitoring apparatus, over a communications channel, via the communications interface and can transmit the message to the monitoring apparatus to activate the T wave filter based at least in part upon a predetermined criteria. Two phase coding gradients and an additional magnetic field gradient are activated for spatial coding, and the MR data are read out while the additional magnetic field gradient is activated.