Ametek / VTI Instruments / VXI Technology VT1503A 8-Channel Programmable Filter/Gain SCP Module

The Ametek VT1503A is an 8-channel programmable filter and gain Signal Conditioning Plug-on (SCP) module for VXI systems. It mounts directly onto VXI scanning measurement and control modules - such as the VT1413C, VT1415A, VT1419A, and VT1422A - to deliver analog signal conditioning for data acquisition and instrumentation applications. The module combines independent low-pass filtering and adjustable gain on each channel with built-in transducer diagnostics.

Technical Specifications

• Channels: 8 independent channels


• Programmable Low-Pass Filter: Cutoff frequencies at 2 Hz, 10 Hz, and 100 Hz; pass-through mode at 1.5 kHz (filter OFF)


• Programmable Amplifier Gain: Three selectable levels - 1, 8, and 64


• Input Protection: Over-voltage protection on each channel


• Open Transducer Detection (OTD): Injected-current method on all channels; controlled via Card Control Register bits


• Control Interface: SCPI commands and register-based programming


• Form Factor: Signal Conditioning Plug-on (SCP) daughterboard design


• Bus Interface: Standard VXIbus connector

Key Features

• Independent channel programming allows per-channel filter and gain configuration


• Pass-through filter mode supports higher-frequency signals up to 1.5 kHz


• Open circuit detection capability identifies transducer connection faults without manual intervention


• Over-voltage clamping protects downstream data acquisition electronics


• Dual control modes (SCPI and register-based) enable integration with diverse test system architectures

Typical Applications

• Multi-channel data acquisition with selective bandwidth filtering


• Sensor signal conditioning for transducer-based measurements


• Test systems requiring programmable signal scaling and filtering


• Automated fault detection in transducer installations

Compatibility & Integration The VT1503A mates with VXI C-size, single-slot measurement and scanning modules including the VT1413C, VT1415A, VT1419A, and VT1422A. It is also compatible with Agilent/HP E1313 and E1413B/E1413 Option 13 platforms. Up to eight SCP modules can be deployed on a single VXI card to expand channel density and measurement flexibility.