Method 2; Total Distortion Including Quantization Distortion - Meridian Nortel 1 Option 11C Technical Reference Manual

Page 170 of 544

Method 2

Total distortion including quantization distortion

553-3011-100 Standard 14.00
Transmission parameters
Reference frequency:
• 700 - 1100 Hz
• 820 Hz A-Law
• 1024 Hz µ-Law
Table 48
Variation of gain versus level method 1
Input Level
dBm0
-10 to +3
With a sine wave in the frequency range of 700-1100 Hz applied to the input
port of any interface, the variation of the gain versus level at the output port
meets the limits given in Table 49.
Reference frequency:
• 700-1100 Hz
• 820 Hz A-Law
• 1024 Hz µ-Law
Table 49
Variation of gain versus level method 2
Input Level dBm0
-37 to -50
0 to 37
The quantization distortion is the difference between the original analog
signal and the analog signal (signal plus noise) resulting from the decoding
process. There are two methods of measuring the quantization distortion:
January 2002
Gain Variation
dB
+/-0.5
Gain Variation dB
+/-1
+/-0.5