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"
• RED power LEDs for boards configured for potentionment inputs (#1-2)
• GREEN power LEDs for boards configured with bridge inputs (#3-8)

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. The color of DL1,DL2 indicates the input configeration of the board
• DK1 : The intensity of this dual RED/GREEN LED indicates the voltage of the

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