Tektronix current probes Amplifier TCPA 300, user manual.
Amplifiers & AC/DC Current Probes User Manual
This manual contains user information and specifications for the probes.
Second PDF file is
TCPA300/400 & TCP300/400 Series
Amplifiers & AC/DC Current Probes Instruction Manual
This document contains information that supports basic instrument operation as well as how to service to the module level.