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HC5520 Datasheet(PDF) 13 Page - Harris Corporation

Part # HC5520
Description  CO/PABX Polarity Reversal Subscriber Line Interface Circuit
PDF  20 Pages
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Manufacturer  HARRIS [Harris Corporation]
Direct Link  http://www.harris.com
Logo HARRIS - Harris Corporation

HC5520 Datasheet(HTML) 13 Page - Harris Corporation

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13
FIGURE 12. 2W RETURN LOSS TEST CIRCUIT - NORMAL AND REVERSE MODES
DEFINITION : 2W Return Loss = 20 log[(ZS + ZL) / Abs(ZS - ZL)]. Where ZS is the source impedance and ZL is the load impedance.
PARAMETER
INPUT AT VAC
MEASUREMENT
SPECIFICATIONS FOR 600
Ω
2W Return Loss
0dBm0 at Freq
VTR at Freq
20log[VAC/Abs(2xVTR - VAC)]
600
Ω
RX
TX
TX4W
RPT
RPR
RRGS
RTPS
100k
Ω
50
Ω
100k
Ω
50
Ω
TIP
TIPSEN
RING
RINGSEN
HC5520
TIP
RING
RX
100k
Ω
CVRX
0.47
µF
CVTX
0.47
µF
VRX
VTX
100k
Ω
R4W
VAC
ZS
VTR
ZL
VTHB
FIGURE 13. 4W TO 4W INSERTION LOSS AND TRANSHYBRID BALANCE - NORMAL AND REVERSE MODES
PARAMETER
INPUT AT VRX
MEASUREMENT
SPECIFICATIONS FOR 600
Ω
4W to 4W Insertion Loss
0dBm0 at Freq
VTX at Freq
20log[VRX/VTX]
Transhybrid Balance
0dBm0 at Freq
VTHB at Freq
20log[VRX/VTHB] + 20dB
600
Ω
RX
TX
TX4W
RPT
RPR
RRGS
RTPS
100k
Ω
50
Ω
100k
Ω
50
Ω
TIP
TIPSEN
RING
RINGSEN
HC5520
TIP
RING
RX
100k
Ω
CVRX
0.47
µF
CVTX
0.47
µF
VRX
VTX
100k
Ω
R4W
-
+
100k
Ω
100k
Ω
1M
Ω
FIGURE 14. RECEIVE OVER LOAD LEVEL AT 4W AND 2W TEST CIRCUIT - NORMAL AND REVERSE MODES
INPUT AT VRX
AT 1kHz
SLIC OUTPUT
IMPEDANCE
SLIC
VOLTAGE GAIN
MEASUREMENT
SPECIFICATION
AT 600
Ω
VRX = 2.50VPEAK
600
Ω
0dB
VTR at 2nd to 5th Harmonics
20log(VTR/VRX)
600
Ω
RX
TX
TX4W
RPT
RPR
RRGS
RTPS
100k
Ω
50
Ω
100k
Ω
50
Ω
TIP
TIPSEN
RING
RINGSEN
HC5520
TIP
RING
RX
100k
Ω
CVRX
0.47
µF
CVTX
0.47
µF
VRX
VTX
100k
Ω
R4W
VTR
HC5520



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