MH88632 데이터 시트보기 (PDF) - Mitel Networks
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MH88632 Datasheet PDF : 18 Pages
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MH88632
Preliminary Information
Loop Electrical Characteristics (Continued)
Characteristics
Sym Min Typ* Max Units Test Conditions
9 RL Threshold
Tip-Ring Voltage Detect
Tip-Ring Current Detect
10 TG and RG Detect Threshold
-30
-40 Vdc LRC = 0v
-1.0
-40 Vdc LRC = 0V
-12
-14 Vdc
† DC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
* Typical figures are at 25°C with nominal +5V supplies and are for design aid only.
AC Electrical Characteristics†
Characteristics
1 2-wire Input Impedance x
2 Return Loss at 2-Wire
(Zin = Ref. = 600Ω)
3 Return Loss at 2-Wire
(Zin = Ref. = 900Ω)
4 Return Loss at 2-Wire y
(Zin = Ref. = External)
5 Longitudinal to Metallic Balance
y z{
6 Metallic to Longitudinal Balance
7 Transhybrid Loss
(Zin = Ref. = Net = 600Ω)
8 Transhybrid Loss
(Zin = Ref. = Net = 900Ω)
9 Transhybrid Loss
(Zin = Ref. = Net = External)
10 Transhybrid Loss
(Zin = Ref. = Net = 600Ω)
11 Input Impedance At RX
12 Output Impedance at TX
13 Transmit Gain, (TX/2-Wire):
Default Gain (0dB) y z
Programmable Range
Frequency response gain y z
(relative to gain at 1kHz)
14 Receive Gain, (2-Wire/RX):
Default Gain (0dB) y z
Programmable Range
Frequency response gain y z
(relative to gain at 1kHz)
Sym
Zin
RL
RL
RL
THL
THL
THL
THL
Min Typ* Max
600
900
Ext.
20
20
20
20
20
20
20
20
20
58
58
55
53
51
60
40
18
21
18
21
18
21
18
21
Units
Ω
Ω
Ω
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
kΩ
Ω
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Test Conditions
200-500 Hz
500-1000 Hz
1000-3400 Hz
200-500 Hz
500-1000 Hz
1000-3400 Hz
200-500 Hz
500-1000 Hz
1000-3400 Hz
200 Hz
1000 Hz
2000 Hz
3000 Hz
4000 Hz
200-1000 Hz
1000 -4000 Hz
200-3400 Hz
500-2500 Hz
200-3400 Hz
500 -2500 Hz
200-3400 Hz
500-2500 Hz
200-3400 Hz
500-2500 Hz
Input 0.5V
1kHz
1kHz
200 Hz
300 Hz
3000 Hz
3400 Hz
Input 0.5V
1kHz
1kHz
200 Hz
300 Hz
3000 Hz
3400 Hz
2-242
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