I am trying to build the differential transmission line simulation following the https://www.youtube.com/watch?v=BNeHFc71n6Q
If I only build single TLINE, no problem, and the vout seems good.
and the message came out are also good:
Note: Compatibility modes selected: ps lt a
Circuit: KiCad schematic
******
** ngspice-40 : Circuit level simulation program
** The U. C. Berkeley CAD Group
** Copyright 1985-1994, Regents of the University of California.
** Copyright 2001-2023, The ngspice team.
** Please get your ngspice manual from https://ngspice.sourceforge.io/docs.html
** Please file your bug-reports at http://ngspice.sourceforge.net/bugrep.html
** Creation Date: Mon Jun 12 16:33:44 UTC 2023
******
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000
Initial Transient Solution
--------------------------
Node Voltage
---- -------
probe_int_probe_int_net-_v1-pad1__ot1_1_ot1_1 0
probe_int_probe_int_net-_v2-pad2__ot1_2_ot1_2 0
probe_int_probe_int_/vout_ot1_3_ot1_3 0
probe_int_probe_int_0_ot1_4_ot1_4 0
net-_v1-pad1_ 0
probe_int_net-_v1-pad1__ot1_1 0
ot1probe_int_vref 0
ot1:power 0
probe_int_0_ot1_4 0
probe_int_/vout_ot1_3 0
probe_int_net-_v2-pad2__ot1_2 0
net-_v2-pad2_ 0
/vout 0
probe_int_/vout_r1_1 0
probe_int_probe_int_0_r1_r1_2 0
probe_int_0_r1 0
r1probe_int_vref 0
r1:power 0
probe_int_net-_v1-pad1__v1_1 0
probe_int_0_v1_2 0
probe_int_0_v2_1 0
probe_int_net-_v2-pad2__v2_2 0
v1probe_int_vref 0
v2probe_int_vref 0
v2:power 0
v1:power 0
bprobe_int_v1power#branch 0
v1:probe_int_n1#branch 0
v1:probe_int_n2#branch 0
bprobe_int_v2power#branch 0
v2:probe_int_n1#branch 0
v2:probe_int_n2#branch 0
bprobe_int_v2vref#branch 0
bprobe_int_v1vref#branch 0
bprobe_int_r1power#branch 0
r1:probe_int_n1#branch 0
r1:probe_int_n2#branch 0
bprobe_int_r1vref#branch 0
bprobe_int_ot1power#branch 0
ot1:probe_int_n1#branch 0
ot1:probe_int_n2#branch 0
ot1:probe_int_n3#branch 0
ot1:probe_int_n4#branch 0
bprobe_int_ot1vref#branch 0
v2#branch 0
v1#branch 0
r1#branch 0
ot1:n4#branch 0
ot1:n3#branch 0
ot1:n2#branch 0
ot1:n1#branch 0
Reference value : 0.00000e+00
No. of Data Rows : 290
But after add the 2nd TLINE, if I run the simulator, the whole kicad crash.
And if I start the kicad from terminal, it shows:
Segmentation fault (core dumped)
