PLS Command Word Definitions It really is only 8-bits centered in the 16-bit field. PLS Command Word Bits 1,2,3,4 Fill - Not Used Bits 5,6 Mode 00 = L 01 = E1 10 = E2 11 = M Bit 7 Amplifier Gain 0 = 2 1 = 20 Bit 8 Integrator Gain 0 = 0.15 1 = 1.15 Bit 9 Modulator Voltage Monitor 0 = ON 1 = OFF Bit 10 Current Calibration 0 = ON 1 = OFF Bit 11 IDC Measurement 0 = DC RETURN 1 = PLASMA Bit 12 Modulator 0 = OFF 1 = ON Bits 13,14,15,16 FILL - Not Used