比如说这样一个比例电路，目前还蛮正常的（不知道怎么接电源，，不接的话在直流输入的情况下Rf>R1会有问题）
然后把输入改为13V(peak)，就报错。。。
用的是13.0，忘记哪里下的汉化破解版
修复……
Multisim Convergence Assistant Log
Step 1: Verifying Error Scenario
...completed.
Step 2: Setting parameter Integration Method (METHOD) to Gear
Simulating...
...completed. Simulation error still occurs.
Step 3: Setting parameter Initial Conditions to Set To Zero
Simulating...
...completed. Simulation error still occurs.
Step 4: Setting parameter Maximum Timestep (TMAX) to 1.0000e-004
Simulating...
...completed. Simulation error still occurs.
Step 5: Setting parameter Maximum Timestep (TMAX) to 1.0000e-003
Simulating...
...completed. Simulation error still occurs.
Step 6: Setting parameter Relative error tolerance (RELTOL) to 1.0000e-002
Simulating...
...completed. Simulation error still occurs.
Step 7: Setting parameter Shunt resistance from analog nodes to ground (RSHUNT) to 1000000000
Simulating...
...completed. Simulation error still occurs.
Step 8: Setting parameter Shunt resistance from analog nodes to ground (RSHUNT) to 100000000
Simulating...
...completed. Simulation error fixed.
Step 9: Attempting rollback of Initial Conditions to Automatically Determine
Simulating...
...Rollback successful.
Step 10: Attempting rollback of Maximum Timestep (TMAX) to 1.0000e-005
Simulating...
...Rollback successful.
Step 11: Attempting rollback of Relative error tolerance (RELTOL) to 1.0000e-003
Simulating...
...Rollback successful.
Step 12: Attempting rollback of Shunt resistance from analog nodes to ground (RSHUNT) to 1.0000e+012
Simulating...
...Error recurred - rollback unsuccessful.
Step 13: Restoring value of Shunt resistance from analog nodes to ground (RSHUNT) to 100000000
Step 14: Attempting rollback of Integration Method (METHOD) to Trapezoidal
Simulating...
...Rollback successful.
Convergence Assistant completed successfully.
然后修复后（好像是调了什么参数）（这个图在用函数发生器作输入时，把负脚接地也会有这种图））））
不懂。。。
