Nortel Meridian 1 Option 11C Compact Technical Reference Manual page 34

Variation of gain versus level
Chapter 2 — Transmission parameters
The variation of gain verses level (tracking error) measures how closely
changes in input levels causes corresponding changes in output levels.
The tracking error is measured in decibels and is defined as the deviation in
gain or loss through a range of input level relative to the gain or loss at the
reference frequency and level of 0 dBmO.
There are two methods of measuring the tracking error.
Method 1
When a noise signal as defined in CCITT recommendation 0.131 is applied
at the input of any interface, the gain versus level deviation at the output
meets the limits set out in Table 11.
Table 11
Variation of gain versus level method 1
Input Level
dBm0
-55 to -10
Alternatively, when a sine wave input in the frequency range 700 - 1100 Hz
is applied at the input of any interface, the gain vs level deviation at the output
meets the limits given in Table 12.
Reference frequency:
• 700 - 1100 Hz
• 1024 Hz
Table 12
Variation of gain versus level method 1
Input Level
dBm0
-10 to +3
Meridian 1 Option 11C Compact
Page 23 of 136
Gain Variation
dB
+/-0.5
Gain Variation
dB
+/-0.5
Technical Reference Guide