434 Chapter 9 Table 9.3: The RCM3400 performed admirably over all the ranges measured. Gain of 1 0­20 V Range Gain of 2 0­19 V Range 4.88 mV 36 mV 0.409 2.4 mV 1.617 7.9 mV Gain of 4 0­5 V Range 2.44 mV 34 mV 0.403 1.0 mV 1.329 3.2 mV Gain of 5 0­4 V Range 1.95 mV 32 mV 0.675 1.3 mV 2.227 4.3 mV Volts per code Measured offset Measured RMS noise in codes Measured RMS noise in volts Measured pk-pk noise in codes Measured pk-pk noise in volts 9.77 mV 39 mV 0.172 1.7 mV 0.568 5.5 mV The conclusion we can draw from our experiments is that the effective resolution of the RCM3400 is a full 11 bits for gains of 1, 2, 4, and 5. If the peak-to-peak noise on a channel is greater than 1 bit, we can compute the noise free