Multi-channel filter/amplifier system
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PF-1UA-FA Filter/Amplifier Systems


 

 

 

 

 

 

 

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Product Overview

Precision PF-1UA-FA
High Performance 8 or 16-Channel
Filter/Amplifier Systems

 

Ideal for conditioning low-level voltage inputs in front of high-resolution digital data acquisition systems; the PF-1UA-FA series is a multi-channel fully programmable filter/amplifier system in a compact rack mountable or bench top package.

Available with 8-channel and 16-channel configurations and offering a choice of either 4 or 8-pole flat or pulse low-pass filters with programmable gain up to 8,192.

The PF-1UA-16FA is a 16-channel filter/amplifier and the PF-1UA-8FA filter/amplifier is an 8-channel, both offering a choice of either 4 or 8-pole low-pass filters or 8-pole band-pass filters. Cutoff settings from 1 Hz to 204.6 kHz are supported. The low-pass filters may operate in either a “flat” mode for maximally flat pass-band amplitude response with sharp roll-off or in a “pulse” mode for low phase distortion and optimized transient response.

The “flat” mode provides pass-band characteristics nearly identical to a Butterworth filter while providing a much sharper roll-off. This mode is a good choice for applications such as spectral analysis. The “pulse” mode has time domain response similar to the Bessel filter yet provides superior amplitude response characteristics. The “pulse” mode is ideal for time domain applications including transient (shock) measurements and time domain waveform analysis.

Programmable pre- and post-filter amplifiers provide an overall gain of 8,192. Gain is distributed both before and after the filter to provide protection from large out-of-band energy or transients that could cause clipping before the filter, distorting the data. The post-filter gain has resolution of better than 0.05% to enable system scaling of the outputs to match the full-scale input of the external recording device. Overload detectors alert the user to over-voltage conditions. Precise, automated digital calibration of gain and DC offset are provided.

Other features of the PF-1UA-FA include a test input for injection of calibration signals into the channel input and a monitor output that allows for convenient monitoring of any channel output via a single BNC.

The system includes an Ethernet remote interface and is supplied with a Graphical User Interface (GUI) for local control.

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Salient Features

Number of Channels:

16 (PF-1U-16FA)
8 (PF-1U-8FA)
Input Connectors:

Individual isolated BNC’s at front panel
Output Connectors:

Individual BNC’s at rear panel
Inputs:

Balanced differential with programmable AC/DC coupling
Zero Suppress:

Programmable DC voltage is inserted at channel input
Pre-Filter Gain:

x1 to x512 in x2 steps with input overload detection
Post-Filter Gain:

x0.25 to x16 with 0.05% resolution

Filters:

Choice of 4- or 8-pole low-pass filters or 8-pole band-pass filters
Cutoff Frequency:

Pulse Mode Programmable from 1 Hz to 102.3 kHz

Flat Mode programmable from 2 Hz to 204.6 kHz

Wide-band 500 kHz, typical

Outputs:

DC coupled, single-ended
Test Support:

Test input and monitor output busses

Physical:

1U high, standard 19-inch RETMA width, 19-inch depth
Input Power:

12 to 24 VDC external AC-to-DC power supply provided with unit
Control:

Ethernet remote control. Local control via supplied GUI. Settings held in non-volatile memory

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Filter Characteristics

Option LP4FP:

4-pole, 4-zero low-pass filter. Programmable for maximally flat pass-band (LP4F) or linear phase with optimized pulse response (LP4P).
Option LP8FP:

8-pole, 8-zero low pass filter. Programmable for maximally flat pass-band (LP8F) or linear phase with optimized pulse response (LP8P).
Option HP4F/LP4FP:

8-pole, 8-zero band-pass filter. Flat HP4F 4-pole, 4-zero high-pass filter cascaded with a 4-pole, 4-zero low-pass filter. Low pass filter programmable for maximally flat pass-band (LP4F) or linear phase with optimized pulse response (LP4P).

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PF-1UA-FA Channel Block Diagram

Click to enlarge

 

PF-1U-16FA Filter/Amplifier Rear Panel.

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The complete PF-1UA-FA description and specifications brochure and filter specifications are available for downloading and printing in the Precision Filters' On-line Library.

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APPLICATIONS

  • Spectral analysis

  • Time domain wave analysis

  • Transient shock measurements

  • Anti-Aliasing Filters with Programmable Amplifiers

  • Automatic Test Equipment

  • Data Acquisition

  • Signal Conditioning

  • Production Test Equipment

  • Industrial Process Control

  • Reconstruction Filters

  • Programmable Band-Pass Filters

 

Reference

The following Specifications 
are available in 
Precision Filters'
On-line Library 
for downloading:

PF-1UA-FA
High Performance
8 or 16-Channel Filter/Amplifier
System Specification

LP4F & LP4P 4-Pole, 4-Zero Low-Pass Filter Specification

LP8F & LP8P 8-Pole, 8-Zero Low-Pass Filter Specification

 

 
     

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