Keysight / Agilent / HP E1512A 8-Channel 25 Hz Fixed Filter SCP Module

The Keysight E1512A is an 8-channel signal conditioning module (SCP) that provides fixed low-pass filtering and input protection for data acquisition systems. Each channel incorporates a 2-pole low-pass filter with a 3 dB cutoff frequency of 25 Hz, effectively attenuating sensor noise across eight independent measurement channels. The module accepts full-scale voltage inputs ranging from 62 mV to 16 V and delivers corresponding filtered outputs. Built-in input over-voltage protection and open transducer detection on all channels enhance system reliability and fault diagnostics.

Technical Specifications

Channels: 8

Filter Type: Fixed low-pass, 2-pole

Cutoff Frequency: 25 Hz (3 dB)

Input Voltage Range: 62 mV to 16 V (full-scale)

Protection Features: Input over-voltage protection, open transducer detection

Shipping Weight: 1 lb

Key Features

Eight independent channels with identical filter characteristics eliminate cross-channel interference in multi-point measurements.

Fixed 25 Hz cutoff frequency targets low-bandwidth sensor signals while rejecting higher-frequency noise and electromagnetic interference.

Open transducer detection automatically identifies sensor connection failures or lead breaks, preventing invalid data collection.

Input over-voltage protection safeguards measurement circuitry against transient overshoot and sensor faults.

Typical Applications

Voltage measurements from instrumentation sensors

Temperature acquisition using thermocouples, thermistors, or resistance temperature detectors (RTDs)

Strain measurement systems Accuracy specifications for temperature measurements include instrument and firmware linearization errors based on ITS-90 transducer curves; add transducer accuracy for total measurement error. Standard terminal block isothermal references introduce ±0.6 °C uncertainty due to temperature gradients. Autoranging operation adds ±0.02% FS to accuracy specifications.

Compatibility & Integration The E1512A mounts in VXI card slots. The E1313 VXI card accommodates up to four modules; E1413, E1415, E1419, and E1422 cards accept up to eight modules each. Companion SCP modules extend measurement capability: the E1505A 8-Channel Current Source SCP enables thermistor and RTD measurements, E1506A/E1507A Strain Completion SCPs support strain applications, and E1503A/E1508A/E1509A modules provide enhanced thermocouple accuracy.