SLAC Products

45

Table 2.

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.

, for n = 1, 2,...127.

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

(See Note 1)

Character

Signal pre

Inversion of

Even Bits

Quantized

Value (at

Decoder

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

y

n

x

n1

+

x

n

+

2

------------------------

=