*STIMULUS FOR OPEN LOOP GAIN
.INCLUDE MAX4232.FAM
XTEST 1 2 3 4 5 6 7 8 MAX4232
RF 1 2 100K
RL 1 0 100K 
CBIAS 2 0 100K
VSIG 3 0 AC 1V
VSUP 8 4 2.7V
VS1 5 0 0
VS2 6 0 0
EG1 0 4 8 4 0.5
.AC DEC 100 0.001 1G
.PROBE
.END