Keysight / Agilent / HP E1503A 8-Channel Programmable Filter/Gain SCP Module

The Keysight/Agilent/HP E1503A is an 8-channel programmable filter/gain signal conditioning plug-on (SCP) module for VXI mainframe systems. Each channel delivers independent low-pass filtering and gain adjustment, enabling precise signal conditioning across low-level voltage, temperature, resistance, and strain measurement applications. The module combines programmable 2-pole filters with three gain settings to optimize signal acquisition for diverse sensor types and dynamic ranges.

Technical Specifications

Channels: 8 independent channels

Filter Type: Programmable 2-pole low-pass with cutoff frequencies of 2 Hz, 10 Hz, 100 Hz, plus pass-through mode (1.5 kHz effective bandwidth)

Gain Settings: ×1, ×8, ×64

Input Voltage Ranges: ±0.25 V, ±2 V, ±16 V

Output Range: 3.9 mV to 16 V full-scale

Maximum Operating Input: ±42 V peak

Gain Temperature Coefficient: 15 ppm/°C

Offset Temperature Coefficients: 0.16–0.39 µV/°C (dependent on temperature range and filter setting)

Typical Offsets (×8 Gain, filter ON): 2 Hz filter 13 µV, 10 Hz filter 9.5 µV, 100 Hz filter 6.8 µV, filter off 6.3 µV

Key Features

Per-channel input over-voltage protection and open transducer detection

Flexible gain and filter configuration for each channel independently

Low offset drift supports precision low-level signal measurement

SCP module form factor integrates into standard VXI mainframes

Typical Applications

Low-level voltage measurements

Thermocouple, thermistor, and RTD temperature acquisition

Resistance measurements

Strain measurements (with E1506A or E1507A Strain Completion SCPs)

Compatibility & Integration Compatible with Agilent/HP VXI mainframe modules including the E1413C 64-Channel Scanning A/D Converter, E1415A Algorithmic Closed Loop Controller, E1419A Multifunction Measurement and Control Module, E1422A Remote Channel Multi-function DAC Module, and HP E1313A/E1413A/B. Pairs with companion modules such as the E1505A 8-Channel Current Source SCP for expanded measurement capability.