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The dependence of delay and jitter of a 200-kV laser-triggered multistage multichannel switch on the experimental parameters is reported. The experimental results are explained by a 0-D model in which the delay of the laser-triggered gap is calculated by a ldquo2-2rdquo model and the delay of the self-fired gaps is calculated by Martin's formula. The delay and the jitter decrease with the increase of energy of laser pulse, voltage, and pressure or the decrease of the percentage SF6 in SF6-N2 in mixtures. The delay of 200-kV switch is less than 28 ns, and the jitter is less than 1 ns.