Electrical network analyzer 551

power qualityfor integration

Single-channel analyzer and timing signal derivation Trailing-edge constant-fraction timing provides walk <±3 ns for 100:1 dynamic range Integral, normal, and window modes Separate lower-level and upper-level discriminator outputs DC-coupled Adjustable delay 0.1 to 11 µs Provision for external baseline sweep The ORTEC Model 551 Timing Single-Channel Analyzer performs the dual functions of single-channel pulse-height analysis and timing signal derivation. The patented* trailing-edge constant-fraction timing technique provides unexcelled timing on either unipolar or bipolar signals and shows better results than are possible with conventional leading-edge discriminators. With SCAs that utilize leading-edge timing, the rise time of the input pulses causes degradation of time resolution because the pulses have varying amplitudes. Constant-fraction timing compensates for varying amplitudes and essentially eliminates this timing shift, giving consistently better timing results. For the internally set 50% fraction, the output occurs soon after the midpoint on the linear input trailing edge to facilitate gating and accumulation of data at very high input rates. This technique also minimizes timing shift and dead time when used with sodium iodide, silicon, and germanium detectors, thereby allowing better system time resolution and higher counting rates.