LT Spice - How to simulate a repetitive signal

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atferrari

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Using LT Spice, how could I simulate a repetitive signal with 12 levels between +2V and -2V?

Intention to use it as the input for a passband filter.

Initially I tried a voltage cell with PWL output but found that it does not repeat! My fault.

Any help out there? I will appreciate that!
 

instead of using pwl, can u try adding the voltages of pulse generators, appropriately setting voltages and time and connecting them in series...but u ll mess up ur schematic sheet.
 

u r going to add up voltages is'nt it? so place in series... when u place in parallel currents will add up.... adding voltages sources in parallel needs u to specify source resistance...
i m not able to view to pic u have loaded...
 

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