MH88437 Просмотр технического описания (PDF) - Mitel Networks
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MH88437 Datasheet PDF : 16 Pages
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MH88437-P
Advance Information
AC Electrical Characteristics † (continued)
Characteristics
Sym Min
10 Return Loss at 2-Wire
(Reference 600Ω)
RL
14
20
18
11 Longitudinal to Metallic Balance
Nc
46
46
Metallic to Longitudinal Balance
60
40
12 Idle Channel Noise
at 2-Wire
at VX
at 2-Wire
at VX
13 Transmit Gain (2-Wire to VX)
Off-Hook
-1
Typ‡
24
24
24
58
53
15
15
-65
-65
0
Max Units
Test Conditions
Test circuit(Figure 9)
dB 200-500Hz
dB 500-2500Hz
dB 2500-3400Hz
Test circuit (Figure 10)
dB 300-1000Hz
dB 1000-3400Hz
Test circuit (Figure 11)
dB 200-1000Hz
dB 1000-4000Hz
20 dBrnC Cmess filter
20 dBrnC
dBm 300-3400Hz filter
dBm
Test circuit (Figure 7)
+1 dB Input 0.5V @ 1kHz
On-Hook
0
dB
14 Frequency Response Gain
(relative to Gain @ 1kHz)
-0.5
0
0.5 dB
-0.5
0
0.5 dB
15 Intermodulation Distortion
IMD
75
dB
products at VX and 2W
16 Distortion at VX due to near end
echo
(300Hz - 3400Hz bandwidth)
75
dB
17 Common Mode Rejection at VX CMR
50
dB
18 Common Mode overload
CML
100V
Vpk-pk
† 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.
LC = 0V
300Hz
3400Hz
ILOOP = 25-60mA
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
ILOOP = 25-60mA
F1 = 1kHz at -6dBm
F2 = 800Hz at -6dBm
Total signal power =
-3dBm
Test circuit (Figure 10)
1-100Hz Note 4
Test circuit (Figure 10)
1-100Hz Note 4
Variations from Standard AC Electrical Characteristics
(MH88437AD-PI/MH88437AS-PI) (-40˚C to 0˚C)
Characteristics
Sym Min Typ Max
1 Receive Gain (VR to 2-Wire)
-1.1
2 Frequency Response Gain
-1.2
(Relative to Gain @ 1kHz)
3 Transhybrid Loss
THL
-12
-15
Units
dB
dB
dB
Test Conditions
Test circuit (Figure 8)
Input 0.5V at 1kHz
ILOOP = 16-60mA
300Hz to 3400Hz
300Hz to 1kHz
1kHz to 3400Hz
10
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