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SLAC Products
59
Table 3.
µ-Law: Positive Input Values
Notes:
1. 8159 normalized value units correspond to TMAX = 3.17 dBm0.
2. The character signal corresponding to positive input values between two successive decision values numbered n and n+1
(see column 4) is 255-n, expressed as a binary number.
3. The value at the decoder is y0 = x0 = 0 for n = 0, and
, for n = 1, 2,...127.
4. x128 is a virtual decision value.
5. Bit 1 is a 0 for negative input values.
12
3
4
5
6
7
8
Segment
# Intervals
x Interval
Size
Value at
Segment
End Points
Decision
Value
Number n
Decision
Value xn
(See Note 1)
Character
Signal pre
Inversion of
Even Bits
Quantized
Value (at
Decoder
Output) yn
Decoder
Output
Value No.
Bit No.
Number
1 2 3 4 5 6 7 8
8159
(128)
(8159)
8
7
6
5
1 0 0 0 0 0 0 0
8031
127
7903
127
4063
2015
113
112
97
96
See Note 2
1 0 0 0 1 1 1 1
4319
4063
4191
112
See Note 2
1 0 0 1 1 1 1 1
2143
2015
2079
96
991
81
80
See Note 2
1 0 1 0 1 1 1 1
1055
991
1023
80
479
65
64
See Note 2
1 0 1 1 1 1 1 1
511
479
495
64
4
223
49
48
See Note 2
1 1 0 0 1 1 1 1
239
223
231
48
3
95
33
32
See Note 2
1 1 0 1 1 1 1 1
103
95
99
32
2
17
16
See Note 2
1 1 1 0 1 1 1 1
35
31
00
16 x 256
16 x 128
16 x 64
16 x 32
16 x 16
16 x 8
16 x 4
33
16
31
1 x 1
1
2
1
See Note 2
1 1 1 1 1 1 1 0
3
1
15 x 2
21
1 1 1 1 1 1 1 1
00
yn
xn1
+
xn
+
2
-----------------------
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