Version 4
SHEET 1 936 680
WIRE -144 -32 -416 -32
WIRE 160 -32 -64 -32
WIRE 176 -32 160 -32
WIRE -416 -16 -416 -32
WIRE 256 32 256 -32
WIRE 256 32 208 32
WIRE 160 48 160 -32
WIRE 240 48 192 48
WIRE -176 64 -256 64
WIRE -256 96 -256 64
WIRE -176 112 -176 64
WIRE -144 112 -176 112
WIRE -32 112 -64 112
WIRE 80 112 -32 112
WIRE 528 112 320 112
WIRE 608 112 528 112
WIRE 192 128 192 48
WIRE 192 128 160 128
WIRE 208 128 208 32
WIRE 240 128 208 128
WIRE 240 176 160 176
WIRE 80 192 -16 192
WIRE 448 192 320 192
WIRE 448 208 448 192
WIRE -16 240 -16 192
WIRE 160 288 160 256
WIRE 64 304 16 304
WIRE 160 304 160 288
WIRE 160 304 144 304
WIRE 16 336 16 304
WIRE 240 336 240 256
WIRE 16 464 16 416
FLAG -16 240 0
FLAG 240 336 0
FLAG 448 208 0
FLAG 16 464 0
FLAG 528 112 rx
FLAG 160 288 in
FLAG -32 112 tx
FLAG -256 176 0
FLAG -416 -16 0
SYMBOL ind2 336 208 R180
WINDOW 0 -33 78 Left 2
WINDOW 3 -35 32 Left 2
SYMATTR InstName L6
SYMATTR Value 100
SYMATTR Type ind
SYMBOL ind2 224 160 R0
SYMATTR InstName L5
SYMATTR Value 100
SYMATTR Type ind
SYMBOL res 160 -16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 58 97 VBottom 2
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL voltage 16 320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 5 75000)
SYMBOL res 48 320 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL res -48 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 100mega
SYMBOL voltage -256 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 5 50000)
SYMBOL res -48 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL ind2 64 96 R0
WINDOW 0 -40 37 Left 2
WINDOW 3 -33 78 Left 2
SYMATTR InstName L1
SYMATTR Value 100
SYMATTR Type ind
SYMBOL ind2 176 144 R180
WINDOW 0 36 80 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName L2
SYMATTR Value 100
SYMATTR Type ind
SYMBOL ind2 224 32 R0
SYMATTR InstName L3
SYMATTR Value 100
SYMATTR Type ind
SYMBOL ind2 176 272 R180
WINDOW 0 36 80 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName L4
SYMATTR Value 100
SYMATTR Type ind
TEXT -320 -56 Left 2 !.tran 20e-3
TEXT -488 344 Left 2 ;K1 L1 L2 1
TEXT -488 376 Left 2 ;K2 L1 L4 1
TEXT -488 400 Left 2 ;K3 L6 L3 1
TEXT -488 424 Left 2 ;K4 L6 L5 1
TEXT -488 320 Left 2 !K1 L1 L2 L3 L4 L5 L6 1
TEXT 16 448 Left 2 ;Twisted Pair Cable 50 Ohm
TEXT 0 -120 Left 2 ;Impedance matching with twisted Pair \ncharacteristic Impedance
TEXT 480 144 Left 2 ;Receive Path
TEXT -216 216 Left 2 ;Transmit Path
TEXT 216 416 Left 2 ;75kHz Signal in twisted pair
TEXT -624 168 Left 2 ;50KHz Signal in Transmit Path
TEXT 184 280 Left 2 ;V1
TEXT 192 0 Left 2 ;V2
TEXT -16 152 Left 2 ;V3
TEXT 384 152 Left 2 ;V4