POT4

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Power Supply

• +12V, GND, -12V required.
• Supply current < 50mA
• Maximum supply voltage is +-15V

Identication

• POT4 is a green PCB with white silk screen.
• Dimenstions 1.75" x 0.85"
• Two mounting holes (diameter = 0.125"), top side clearance > 0.25"
• The color of DL1,DL2 indicates the input configeration of the board

Led Indicators

• (DL1, DL2) : A pair of single LEDs indicate the present of power. These LEDs are aligned with the power input to the boards.
  • RED : configured for potentionment inputs (#1-2)
  • GREEN : configured with bridge inputs (#3-8)
• DK1 : The intensity of this dual RED/GREEN LED indicates the voltage of the "postion signal".

Jumpers

• JF1 : 3 way jumper used to select souce that drives that "Position" output. The signal source may be one of the following:
  • Insturmentation amplifier output
  • 2nd order low pass filter output
  • 4th order low pass filter output

• JC1 : selects the "Shield" header signal source and is specified at assembly time. Signal sources include "GND", "COM", or "REF-".

assembly variations

POT4 can be built for either potentiometer input or bridge input. There are also several optional circuit modules.

• boards #1, #2 : fully built with lowpass filters, differentiation is configured for potentiometer input
• boards #3, #4 : minimally built for strain gauge bridge input
• boards #5 - #8: built for strain gauge bridge input and are minimally built with 2nd order LP filter

Schematics

• Media:Pot4-for-strain-gauge-boards-5to8.pdf

FAQ

• Q: How to adjust the gain?
• Q: What is pinout of the headers?
• Q: What are the characteristics of the voltage reference?

POT4 Bill of Materials

POT4 Datasheets