Tektronix AM503B, AC/DC Current Probe Amplifier w/ Power Module And ProbeCondition:* Used, Powers On. Unable To Test. Sold As-Is. Additional Notes:* Contains: One (1x) AM503B Probe Amplifier, One (1x) TM502A Power Module, One (1x) A6303 Current ProbeAM503B Probe Amplifier* The AM503B AC/DC Current Probe Amplifier is the heart of the AM503S System* The AM503B amplifies and sums the voltage outputs from the transformer and Hall Effect device and outputs it to the measurement instrument* It also provides the Hall Effect Device bias voltage and a reverse “bucking” current which resists saturation of the A6312/A6302/A6303 Current Probe core* Plugs into TM 500/5000 Power Modules: With A6302 Probe: DC to 50MHz; 20 Amp Continuous/50 Amp Peak, Max. Conductor Diameter: 0.15Inch With A6303 Probe: DC to 15MHz; 100 Amp Continuous/500 Amp Peak; Max. Conductor Diameter: 0.83 Inch With A6304XL Probe: DC to 2MHz; 500 Amp Continuous/700 Amp Peak; Max. Conductor Diameter: 0.83 Inch With A6312 Probe: DC to 100MHz; 20 Amp Continuous/50 Amp Peak; Max. Conductor Diameter: 0.15 InchTM502A Power Module* The TM502A power module accepts up to 2 single width TM500 series modules* Compartments: 2* Compatibility: TM500 Series Plug-Ins* 100, 110, 120, 200, 240 Volt AC; 48-400 Hz OperationA6303 Current Probe* The A6303 current probe is useful in making SCR, power supply, industrial control, and motor start-up current measurements* AC/DC Current measurements* Input current: 100 Amp continuous, 500 Amp Peak* Bandwidth:DC to 15 MHz* Clips on conductors up to 0.83 inch diameter* Cable length: 2 mTektronixAM503B/TM502A/A6303