BF-48DGX

Signal Processoring

Description

BF-48DGX –Differential amplifier / filter module for EPMS-07 systems

Features:

  • Differential DC (1 MΩ, 30 pF) or AC INPUT (corner frequency 0.1 Hz)
  • OUTPUT selectable between filtered or unfiltered
  • Ten-turn OFFSET control, four position OFFSET range switch (OFF, ±0.1V, ±1V or ±10V)
  • HIGHPASS FILTER (optional): DC, 0.1, 0.3, 0.5, 1, 3, 5, 10, 30, 50, 100, 300, 500, 800, 1k, 3k
  • LOWPASS FILTER: 20, 50, 100, 200, 300, 500, 700, 1k, 1.3k, 2k, 3k, 5k, 8k, 10k, 13k, 20k
  • NOTCH FILTER: (optional) 50 or 60 Hz
  • GAIN: x1, x2, x5, x10, x20, x50, x100, x200, x500, x1000
  • Monitor OUTPUTS for FILTERS and GAIN (1 V / step)
  • OVER LEDs (activating at 10% below maximum output)
  • Analog BALANCE monitor (±30 mV) for optimal OFFSET control

Ordering

Part no. Description
BF-48DGX-4L Filter module with gain, 4-pole low pass Bessel filter with 16 corner frequencies, width = 2
BF-48DGX-4HL Filter module with gain, 4-pole low pass Bessel filter with 16 corner frequencies, 1-pole high pass Bessel filter with 15 corner frequencies, width = 2
BF-48DGX-8L Filter module with gain, 8-pole low pass Bessel filter with 16 corner frequencies, width = 2
BF-48DGX-8HL Filter module with gain, 8-pole low pass Bessel filter with 16 corner frequencies, 1-pole high pass Bessel filter with 15 corner frequencies, width = 2

Technical Data

INPUT RANGE:
±12 V; protected up to ±40 V

INPUT IMPEDANCE:
1 MΩ related to ground (other values possible), 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 by toggle switch and ten-turn potentiometer

LOWPASS FILTER:
4-pole Bessel, attenuation: -24 dB/octave or
8-pole Bessel, attenuation: -48 dB/octave corner frequencies (Hz): 20, 50, 100, 200, 300, 500, 700, 1k, 1.3k, 2k, 3k, 5k, 8k, 10k, 13k, 20k

HIGHPASS FILTER (option):
single pole, attenuation: -6 dB/octave, corner frequencies (Hz): DC, 0.1, 0.3, 0.5, 1, 3, 5, 10, 30, 50, 100, 300, 500, 800, 1k, 3k

GAIN:
rotary switch: 1-2-5-10-20-50-100-200-500-1000

OVERLOAD LEDS:
starting to light up at ±10 V

FULL POWER BANDWIDTH:
20 kHz

OUTPUT IMPEDANCE:
250 Ω

OUTPUT VOLTAGE:
max. ±12 V, short-circuit protected

LOAD CAPACITANCE:
max. 10 nF

GAIN / FREQUENCY MONITOR:

1V / step

DIMENSIONS:

24 HP (121.5 mm) x 3U (128.5 mm), 7″ (175 mm) deep.

Downloads

Manual:
BF-48DGX Manual

Brochure:
BF-48DGX Brochure

References:
npi Filters Reference List