A signal gain that is defined by setting the gainselector switch on a preamplifier (such as the MNCAG) to P (for programmable). In this mode, the gain is controlled by the program running in the computer.; 一種信號增益,是由前置放大器(如MNCAG)上增益選擇開關(guān)設(shè)定成P(可編程)后 確定的。在這種方式下,增益由計算機中運行的程序加以控制。