Preliminary Information
AC Electrical Characteristics* - Transmit (A/D path)
Characteristics
1
2
3
Absolute Gain
Default (codec odB)
Transmit Gain
Loss Distortion with frequency
(relative to level at 1020Hz with
codec at 0dB)
0.0
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.25
-0.25
-0.5
-1.5
3.14
3.14
Sym
Min
-0.5
Typ
†
0
0
-
-
1.0
0.75
0.35
0.55
1.5
0.25
0.25
0.5
1.5
Max
0.5
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm0
MH89626C
Test Comments
Input -6dB
1020 Hz
0-200 Hz
200-300 Hz
300-400 Hz
400-600 Hz
600-2400 Hz
2400-3000 Hz
3000-3400 Hz
Input 1020 Hz
0 to +3dBm
-40 to 0dBm
-50 to -40dBm
-55 to -50dBm
THD < 5%
Input 1020Hz
THD < 5%
Input 1020Hz
Input at 2-Wire
0 to -10dB
-20dBm
-30dBm
-40dBm
-50dBm
Input at 2-wire
-25dBm, 4.6 -72kHz
0dbm, 1020Hz
0dBm, 300 -3400 Hz
0.39
0.22
4
Gain variation with Input Level
(relative to gain at 1020Hz with
-6dBm input)
5
6
Signal Input Overload Level at
2-Wire
Signal Output Overload Level at Do
7
Signal to Total Distortion Ratio at Do
35
33.8
28.8
19.5
14.5
dB
dB
dB
dB
dB
-50
-40
-25
-41
-70
-64
dBm0
dBm0
dBm0
dB
dBm0p
8
Out-of-Band Discrimination at Do:
Signals in 4.6 -72 kHz band
Signals in 300-3400 Hz band
other than 1020 Hz
Signals in 4.6 -72 kHz band
Harmonic Distortion
(2nd or 3rd Harmonic) at DSTo
Idle Channel Noise at Do
9
10
† Typical figures are at 25°C with nominal +5V supplies and are for design aid only.
* AC Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
2-291
MITEL [ MITEL NETWORKS CORPORATION ]
