Tektronix AM503S The AM 503S Current Probe System is

The AM 503S Current Probe System is the most versatile current measurement system available. Since the probes incorporate both a transformer and a Hall Effect device, broadband AC/DC current can be measured simultaneously. Depending on the probe used, current from DC to 100 MHz and up to 700 A can be measured by clipping the split-core probes around the conductor. The AM 503S is truly a system, consisting of an AM503B Current Probe Amplifier, a TM 502A two-wide Power Module, and an A6302 Current Probe, BNC-BNC cable, 50 Ohms termination, and a plug-in tool box. Options enable you to add or substitute an A6312 Current Probe, A6303 Current Probe or delete the A6302 Current Probe.