MH88630 Просмотр технического описания (PDF) - Mitel Networks
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MH88630 Datasheet PDF : 10 Pages
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Preliminary Information
MH88630
AC Electrical Characteristics†
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1 Ringing Voltage
2 Ringing Frequency
3 Operating Loop Current
VR
40
90
130
Vrms
20
Hz Ringing Type A, RS-464
IL
18
70 mA
4 Off-Hook DC Resistance
RT
5 Operating Loop Resistance
RL
6 On-Hook Leakage Current
7 Ring Ground Sink Current
IRG
8 Tip and Ring AC Impedance
9 Longitudinal Balance
metallic to longitudinal
longitudinal to metallic
10 Return Loss
Trunk to Line
11 Transhybrid Loss (single
THL
frequency) into 600Ω
12 Transhybrid Loss (single
THL
frequency) into AT&T
Compromise
13 Frequency response (Output
relative to 1kHz,
VTR/VR and VX/VTR)
14 Idle Channel Noise
15 Power Supply rejection ratio
PSRR
60
40
58
53
20
26
30
16
16
18
-0.15
-0.10
-0.10
-0.15
3
600
18.5
34
30
18
21
8
40
300
Ω @18mA
2300 Ω @18mA
µA RINGND = 5.0Vdc
100 mA -48VDC with 200Ω in
series on Ring lead
Ω with 10kΩ + 1.0µF
inparallel with Tip and
Ring
dB 200-1000Hz
dB 1000-4000Hz
dB 200-1020Hz
dB 1020-3020Hz
dB 200-500Hz
dB 500-1000Hz
dB 1000-3400Hz
dB 200Hz
dB 1000Hz
dB 3000Hz
dB 200-1000Hz
dB 1000-4000Hz
0.05
0.05
0.05
0.05
13
dB 200Hz
dB 300Hz
dB 3000Hz
dB 3400Hz
See Note 1
dBrncO C-Message
dB
16 Analog signal overload level
(adjustable gain)
6 dBm 1kHz, 0dBm=0.775Vrms
into 600Ω.
† AC Electrical Characteristics are over recommended operating conditions unless otherwise stated.
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
Note 1: Input 0dBm at VTR, or input 0.775Vrms at VR. TR-600Ω termination
2-221
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