Differential Amplifier
The FTA true differential amplifier offers up to 6 channels for active and reference probes. The low-level signals are conditioned and filtered using Ectron model 428-O precision differential amplifiers to provide a maximum gain of 2,500x. Unique features include manual or auto-zero of the input signal and a 4 Hz filter bandwidth. The amplifier offers isolated true differential input, excellent temperature stability and immunity to EMI/RFI noise.
The FTA Reversing DC Potential Difference System is designed to provide the precise current and amplifier stability necessary for the reversing DC potential difference method of monitoring crack length. Custom manufactured at LTI, the system is intended to be used in conjunction with the FTA ADwin-Gold and FTA control testing software, which synchronizes current reversing and voltage measurement.
LTI manufactures high-quality PD cables to be used with our DCPD systems, available in standard 6’, 10’, and custom lengths. The cables are fully shielded and connect from the test specimen to the high-precision differential amplifier.