Normally a competent alarm engineer would measure the circuits,
low Ohms between each pair of cables, high Ohms between cables which ain't paired.
With the system running on battery power only, measure the voltage at each device to ensure it high enough.
Full set the system & check the device operates as intended,
If all fine I would swap the circuits with another zone & place the viper circuit on soak test.
You can do all this yourself or just find a competent alarm co. to look after your system.....