USBPHP-S1 software controlled 4-pole Butterworth or Bessel high pass filter with variable gain instrumentation amplifier.

USBPHP-S1 software controlled 4-pole Butterworth or Bessel high pass filter with variable gain instrumentation amplifier is CE compliant.

  • Differential or single-ended input
  • ±10Vmax Signal Input and Output with input protection up to ±40V
  • Software-programmable instrumentation amplifier gains of 1 to 1000
  • Compatible with any 12, 16, or 24-bit A/D converter devices
  • All versions of Windows compatible menu setup software and SDK included
  • Software select any high pass Fc from 10 Hz to 1275Hz (N) or 1100Hz to 41.5kHz (E)
  • High pass filter available as a 4-Pole Butterworth or 4-Pole Bessel
  • Filter rejection band attenuation up to -90dB
  • USB 2.0 compatible communication for setup and control
  • Non-volatile configuration retains all settings through power cycles
  • Does not need to be attached to a PC to operate
  • DC power source allows for convenient 9 to 12V battery operation
  • Includes universal AC/DC power adapter. Use anywhere
  • factory calibrated for unity gain and very low DC offset filter output
  • Use multiple USBPHP-S1 units for multi-channel applications

Adaptable to most Data Acquisition Applications

The USBPHP-S1 stand alone USB controllable module is a single channel high-pass filter and high-quality instrumentation amplifier for front-end signal conditioning. It is compatible with all popular A/D converter devices. The USBPHP-S1 is powered by 9 to 12VDC so it can be directly connected to a regulated DC voltage source. For use with unregulated DC power use the optional USBPxx-S1/DCR DC voltage regulator for battery or solar DC power sources from 9 to 30VDC. Alternatively, the included 115-220VAC adapter can be utilized to accomodate wall power anywhere in the world. When programmed from the USB port, the USBPHP-S1 will remember all of the programmed properties between power cycles. Program once and operate as a stand-alone signal conditioner without having to reprogram for every use. This is perfect for turn-key applications. It's easy to connect the USBPHP-S1 into the data collection system. Input and output signals can be routed through BNC connection or by using the detachable screw terminal connectors.


Multi-channel Convenience

USBPHP-S1 software controlled 4-pole Butterworth or Bessel high pass filter with variable gain instrumentation amplifier in a multi channel USBDR-8 mounting platform.

For multi-channel convenience populate the USBDR-8 USB and power distribution rack with USBPHP-S1 modules. The USBDR-8 can hold up to 8 modules and can be daisy chained to create very large channel counts with one host computer. Click here to find out more about the USBDR-8.


Connection to the Data Acquisition System

All I/O connections from the USBPHP-S1 are made via two BNC connectors or from the supplied removable screw terminal connectors.


How to Order

The USBPHP-S1 comes complete with everything you need to connect, power, program and quickly integrate the USBPHP-S1 into the data collection system. Please fill out the Request Prices form and we will eMail our price list and complete information about the items that are included and the best way to submit a purchase request. Below is a table of part numbers and configuration options. Each filter characteristic is available as a factory installed option.

Support Software

Alligator Technologies has developed SystemViewUSBPxx, a Windows based dialog interface to the USBPHP-S1 unit. Just plug any number of USBPHP-S1 units into the USB of the host computer and each unit will be individually recognized. The operating parameters can be changed for each unit or for all attached units with just a couple clicks of the mouse. Set the corner frequency at any value, select the amplifier gain, or even give the USBPHP-S1 a unique name.


Software for control of USBPHP-S1 software controlled 4-pole Butterworth or Bessel high pass filter with variable gain instrumentation amplifier.  With GUI, SDK and API.

Menu-Driven Software

The USBPHP-S1 is supplied with SystemViewUSBPxx for Windows for control of the gain, clock source and, corner frequencies.  Pictured is the software control dialog for controlling one or all USBPHP-S1 units connected to the host computer.  The control of the USBPHP-S1 is straight forward and intuitive.  To obtain the gain use the pull down lists.  To set the corner frequency, type any corner frequency within the bandwidth limits of the filter into the edit field.  Simply click the Program button to send the parameters through the USB to the USBPHP-S1.  In systems where more than one USBPHP-S1 is connected each unit will be represented by an individual channel dialog window cascade from the upper left of the screen. The contents of the dialog will reflect the current configuration of each unit.

SDK for Custom Software Applications

The SystemViewUSBPxx is built on top of a COM(ActiveX) object that can be dropped into any custom application. The COM can be interfaced with LabView, MatLab, C++, VisualBASIC, C# or any other high level language to directly control USBPxx product line devices. We provide example application software written in C++ that describes this interface in great detail. The SDK is included with the purchase of any USBPxx product.

Filter Selection
High Pass 4-pole Butterworth Narrow Range 10Hz to 1275Hz USBPHP-S1/L(x)H(BN)
High Pass 4-pole Butterworth Extended Range 1100Hz to 41.5kHz USBPHP-S1/L(x)H(BE)
High Pass 4-pole Bessel Narrow Range 10Hz to 1275Hz USBPHP-S1/L(x)H(LN)
High Pass 4-pole Bessel Extended Range 1100Hz to 41.5kHz USBPHP-S1/L(x)H(LE)
Configuration Option Suffix Codes
Modified DC offset bias (X = range code) -50X
Modified input impedance (X = impedance value code) -70X
Connectors Kits
Screw terminal adapter kit(one 2-lead STA and two 3-lead STA) USBPHP-S1/STA
two BNC to SMA Male adapters USBPHP-S1/SMAM
two BNC to SMA Female adapters USBPHP-S1/SMAF
Power Adapters
Universal AC to 9V DC 500mA P9V500MA
Power Adapter Plug North America PAP-NA
Power Adapter Plug Europe PAP-EU
Power Adapter Plug Australia PAP-AU
Power Adapter Plug United Kingdom PAP-UK
9 to 30VDC-DC power regulator USBPxx-S1/DCR
Fred Gator King of the Swamp

Alligator Technologies 2183 Fairview Road Suite 220 Costa Mesa CA 92627 USA
Telephone 949.515.1400 Fax 949.515.4724 eMail

Copyright © 2019 Alligator Technologies, All Rights Reserved