  We present a set-up for time-resolved X-ray diffraction based on a short
pulse, laser-driven plasma X-ray source. The employed modular design provides
high flexibility to adapt the set-up to the specific requirements (e.g. X-ray
optics, sample environment) of particular applications. The configuration
discussed here has been optimized towards high angular/momentum resolution and
uses K$_{\alpha}$-radiation (4.51 keV) from a Ti wire-target in combination
with a toroidally bent crystal for collection, monochromatization and focusing
of the emitted radiation. $2\times 10^5$ Ti-K$_{\alpha1}$ photons per pulse
with $10^{-4}$ relative bandwidth are delivered to the sample at 10 Hz
repetition rate. This allows for high dynamic range ($10^4$) measurements of
transient changes of the rocking curves of materials as for example induced by
laser-triggered strain waves.
