AC/DC Current Probe 100MHz, 0.1V/A, 30A (rms). R&S ID # 1409.7766K02. Unit sold with a valid calibration certificate and with 12 months warranty. The RT-ZC20 is a Current Probe with a 100 MHz bandwidth. Current probes measure the current that flows through a wire. The R&S current probes are suitable for AC and DC current measurements. Current probe AC/DC Bandwidth: 100 MHz Max. current (RMS / peak): 30 A / +/-50 A Rise time: 3.5 ns Sensitivity error : +/- 1% up to 30 A (RMS) Max. circuit voltage: 300 V (CAT I) Extras: external power supply necessary, e.g. R&S RT-ZA13