MH88422(1995) Ver la hoja de datos (PDF) - Mitel Networks
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MH88422 Datasheet PDF : 12 Pages
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MH88422
Preliminary Information
AC Electrical Characteristics† - MH88422-1
Characteristics
Sym Min
1 2-Wire input Impedance
(200Ω + 820Ω //115nF)
2 Return Loss at 2-Wire
(200Ω + 820Ω //115nF)
Zin
RL 20
20
20
3 Longitudinal to Metallic Balance
40
55
53
4 Idle Channel Noise
Nc
at 2-Wire
At VX
5 Transmit Gain (2-Wire to VX)
6 Frequency Response Gain
(relative to gain @ 1kHz)
Typ‡
900
Max
22
24
26
65
60
60
-72 -58
-72
-0.4
-0.6
-0.6
Units
Ω
Test Conditions
@ 1kHz
dB 300-500Hz
dB 500-2500Hz
dB 2500-3400Hz
dB 50-300Hz
dB 300-1000Hz
dB 1000-4000Hz
dBmp
dBmp
dB
dB
dB
Input 0.5V @ 1kHz
Off -Hook
300Hz
3400Hz
† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only.
AC Electrical Characteristics† - MH88422-2
Characteristics
Sym Min Typ‡ Max
1 2-Wire Input Impedance
(600Ω)
ZIn
600
2 Return Loss at 2-Wire
(Reference 600Ω)
ERL 20 20
SFRL 14 18
3 Longitudinal to Metallic Balance
Metallic to Longitudinal Balance
58 60
53 55
60
40
4 Idle Channel Noise
Nc
at 2-Wire
at VX
13 20
13
5 Transmit Gain (2-Wire to Vx)
-0.4
6 Frequency Response Gain
-0.6
(relative to gain @ 1kHz)
-0.6
† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only.
Units
Ω
Test Conditions
@ 1kHz
dB 500-2500Hz
200-3200Hz
dB 200-1000Hz
dB 1k-3kHz
dB 200-1000Hz
dB 1k-4kHz
dBrnC
dBrnC
dB
dB
dB
Input 0.5V @ 1kHz
Off- Hook
200Hz
3400Hz
2-26
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