Version 4
SHEET 1 880 680
WIRE 112 16 48 16
WIRE 256 16 192 16
WIRE 256 32 256 16
WIRE 48 96 48 16
WIRE 256 128 256 112
WIRE 256 160 256 128
WIRE 48 256 48 176
WIRE 256 256 256 240
WIRE 256 256 48 256
WIRE 48 288 48 256
FLAG 48 288 0
FLAG 48 16 1
FLAG 256 16 2
FLAG 256 128 3
SYMBOL res 240 144 R0
SYMATTR InstName R1
SYMATTR Value {5*RX}
SYMBOL voltage 48 80 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL res 240 16 R0
SYMATTR InstName R2
SYMATTR Value {3*RX+1k}
SYMBOL res 96 32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 10k
TEXT 40 -192 Left 2 !.op
TEXT 40 -72 Left 2 ;.step param RX list 1k 3k 10k
TEXT 40 -104 Left 2 !.step param RX 1k 10k 1k
TEXT 40 -144 Left 2 !.param RX=1k