Version 4.1
SHEET 1 968 824
WIRE -2064 -544 -2272 -544
WIRE -2272 -480 -2272 -544
WIRE -2240 -480 -2272 -480
WIRE -2160 -464 -2176 -464
WIRE -2064 -464 -2064 -544
WIRE -2064 -464 -2080 -464
WIRE -2400 -448 -2512 -448
WIRE -2240 -448 -2400 -448
WIRE -2512 -432 -2512 -448
WIRE -2512 -336 -2512 -352
WIRE -2064 -288 -2064 -464
WIRE -2064 -288 -2272 -288
WIRE -2064 -240 -2064 -288
WIRE -1968 -240 -2064 -240
WIRE -1920 -240 -1968 -240
WIRE -2272 -224 -2272 -288
WIRE -2240 -224 -2272 -224
WIRE -2144 -208 -2176 -208
WIRE -2064 -208 -2064 -240
WIRE -2064 -208 -2080 -208
WIRE -2384 -192 -2512 -192
WIRE -2240 -192 -2384 -192
WIRE -2512 -176 -2512 -192
WIRE -2512 -80 -2512 -96
WIRE -2064 -16 -2064 -208
WIRE -2064 -16 -2272 -16
WIRE -2272 48 -2272 -16
WIRE -2240 48 -2272 48
WIRE -2144 64 -2176 64
WIRE -2064 64 -2064 -16
WIRE -2064 64 -2080 64
WIRE -2384 80 -2512 80
WIRE -2240 80 -2384 80
WIRE -2512 96 -2512 80
WIRE -2512 192 -2512 176
FLAG -2512 -336 0
FLAG -2512 -80 0
FLAG -2400 -448 err
FLAG -2384 -192 err_clp
FLAG -2512 192 0
FLAG -2384 80 err_cln
FLAG -1968 -240 err_xo
SYMBOL voltage -2512 -448 R0
WINDOW 0 -125 49 Left 2
WINDOW 3 -107 93 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V_ERR
SYMATTR Value 1.0V
SYMBOL voltage -2512 -192 R0
WINDOW 0 -194 40 Left 2
WINDOW 3 -314 93 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V_ERR_CLP
SYMATTR Value PWL(0us 2V  100us 0V)
SYMBOL res -2064 -480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL diode -2080 -224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL voltage -2512 80 R0
WINDOW 0 -183 40 Left 2
WINDOW 3 -321 90 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V_ERR_CLN
SYMATTR Value PWL(0us -2V  100us 0V)
SYMBOL diode -2144 80 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N914
SYMBOL OpAmps\\opamp -2208 -528 R0
WINDOW 0 1 106 Left 2
WINDOW 3 -22 135 Left 2
SYMATTR InstName U8
SYMATTR Value opamp1
SYMATTR SpiceLine ""
SYMATTR SpiceLine2 ""
SYMBOL OpAmps\\opamp -2208 -272 R0
WINDOW 0 4 104 Left 2
WINDOW 3 -31 129 Left 2
SYMATTR InstName U9
SYMATTR Value opamp1
SYMATTR SpiceLine Aol=1e6
SYMATTR SpiceLine2 ""
SYMBOL OpAmps\\opamp -2208 0 R0
WINDOW 0 -10 109 Left 2
WINDOW 3 -30 135 Left 2
SYMATTR InstName U10
SYMATTR Value opamp1
SYMATTR SpiceLine ""
SYMATTR SpiceLine2 ""
TEXT -3416 -560 Left 2 ;SMU FVFI Basic w Clamp
TEXT -3408 -520 Left 2 !.tran 100us
TEXT -3408 200 Left 2 ;bot
TEXT -3432 -256 Left 2 !*  pin order      in- in+ out\n.SUBCKT OPAMP1      1  2  4\n*\nGGAIN   0 3  2 1  1\nRP1  3 0 1e6\nEBUF  4 0  3 0  1.0\n*\n* V Limit\nVP 10 0 +15V\nVN 11 0 -15V\nD1 3 10 1N914\nD2 11 3 1N914\n.ENDS
TEXT -2720 -232 Left 2 ;Error - Clamp POS
TEXT -2720 -488 Left 2 ;Error - Force
TEXT -2720 40 Left 2 ;Error - Clamp NEG
TEXT -2232 -592 Left 2 ;Crossover
RECTANGLE Normal -2032 160 -2288 -560 1