For the PCM coding scheme shown in Figure 8, determine the quantized voltage, quantization error (Qe), and PCM code for the analog sample voltage of +1.07 V.
To determine the quantized level, simply divide the sample voltage by resolution and then round the answer off to the nearest quantization level:
1V+1.07V = 1.07 = 1
The quantization error is the difference between the original sample voltage and the quantized level, or
Qe = 1.07 − 1 = 0.07
From Table 2, the PCM code for +1 is 101.