DPA-2

Signal Processoring

DPA-2FL

DPA-2FL – µV Amplifier / Filter with Offset Compensation and Gain

Features: 

  • HIGH PASS FILTER: 0.1, 1, 100, 300, 600; single pole
  • LOW PASS FILTER: 50, 100, 1k, 3k, 5k, 8k; single pole
  • GAIN: 10, 100, 1k, 2.5k, 5k, 10k; AC or DC
  • OFFSET Control, Two Ranges: x0.1V, x1V
  • Differential input, 100 kΩ input impedance
  • Additional notch-filter (50Hz/60Hz) available
  • Extra low noise

DPA-2FS/2FX

DPA-2FX / DPA-2FS – Amplifier / Filter with Offset Compensation and Gain

Features:

  • DPA-2FX: HIGH PASS FILTER: 3, 30, 100, 300, 400, 500, 600, 800, 1k, 3k, 10k Hz; single pole
  • DPA-2FX: LOW PASS FILTER: 30, 100, 300, 500, 700, 900, 1.3k, 1.5k, 1.7k, 3k, 10k, 20k Hz; single pole
  • DPA-2FS: HIGH PASS FILTER: 0.3, 5, 100, 300, 400, 500, 600, 800, 1k, 3k, 10k Hz; single pole
  • DPA-2FS: LOW PASS FILTER: 30, 100, 300, 500, 700, 1k, 1.3k, 1.5k, 3k, 5k, 10k, 20k Hz; single pole
  • DPA-2FS & -2FX: GAIN: x1, x2, x5, x10, x20, x50, x100; AC or DC, 3 ranges: x1, x10, x100
  • DPA-2FS & -2FX: OFFSET Control: 10-turn potentiometer, 3 ranges: x0.1V, x1V, x10V
  • DPA-2FS & -2FX: OVER LEDs (activating at 10% below max. output)
  • DPA-2FS & -2FX: Differential input, 10 MΩ input impedance

Ordering

Part no. Description
DPA-2FS Low- and high pass, one pole Bessel filter module with gain, width = 1
DPA-2FX Low- and high pass, one pole Bessel filter module with gain, width = 1
DPA-2FL Low-noise, low- and high pass, one pole Bessel filter module, width = 1

DPA-2FX/2FS Tech. data

INPUT RANGE:
±12 V; protected up to ±15 V

INPUT IMPEDANCE:

10 MΩ related to ground

INPUT CAPACITANCE:

30 pF

AC COUPLING AT INPUT:
corner frequency of 0.1 Hz (if AC/0/DC-switch at BNC connector is switched to AC)

OFFSET COMPENSATION:
±0.1 V, ±1 V or ±10 V, set by toggle switch and ten-turn potentiometer

HIGHPASS FILTER: DPA 2FX

single pole, attenuation: -6 dB/octave, corner frequencies (Hz): 3, 30, 100, 300, 400, 500, 600, 800, 1k, 3k, 10k

LOWPASS FILTER: DPA 2FX
single pole, attenuation: -6 dB/octave, corner frequencies (Hz): 30, 100, 300, 500, 700, 900, 1.3k, 1.5k, 1.7k, 3k, 10k, 20k

HIGHPASS FILTER: DPA 2FS
single pole, attenuation: -6 dB/octave, corner frequencies (Hz): OFF, 0.3, 5, 100, 300, 400, 500, 600, 800, 1k, 3k, 10k

LOWPASS FILTER: DPA 2FS
single pole, attenuation: -6 dB/octave, corner frequencies (Hz): 30, 100, 300, 500, 700, 1k, 1.3k, 1.5k, 3k, 5k, 10k, 20k

GAIN:
rotary-switch: 1-2-5-10-20-50-100

GAIN RANGE:
selectable with toggle switch x1, x10, x100

GAIN and GAIN RANGE are multiplied giving a maximum amplification of 10000

OVERLOAD LEDS:
starting to light up at ±10 V

OUTPUT:
impedance 50 Ω, max ±12 V, short circuit protected

DIMENSIONS:

front panel 12 HP (60.6 mm) x 3U (128,5 mm), 7″ (175 mm) deep.

DPA-2FL Tech. data

INPUT RANGE:
±12 V; protected up to ±15 V

INPUT IMPEDANCE:
100 kΩ related to ground

INPUT CAPACITANCE:

30 pF

OFFSET COMPENSATION:

±0.1 V or ±1 V, set by toggle switch and potentiometer

HIGHPASS FILTER:
single pole, attenuation: -6 dB/octave, corner frequencies (Hz): DC, 0.1, 1, 100, 300, 600

LOWPASS FILTER:
single pole, attenuation: -6 dB/octave, corner frequencies (Hz): 50, 100, 1.k, 3k, 5k, 8k

NOTCH FILTER:

50 Hz or 60 Hz

GAIN:
rotary-switch: 10-100-1k-2.5k-5k-10k

OUTPUT:
impedance 50 Ω, max ±12 V, short circuit protected

DIMENSIONS:
front panel 12 HP (60.6 mm) x 3U (128,5 mm), 7″ (175 mm) deep.

Downloads

Manual:
DPA-2FX Manual
DPA-2FL Manual
DPA-2FS Manual

Brochure:
DPA-2F Brochure

References:
npi Filters Reference List