Low-pass Bessel Filters (LPF-100B / LPF-202A)

Low-pass Bessel Filters (LPF-100B / LPF-202A)

These DC amplifier and signal conditioners are used to filter noise and boost signals to levels compatible with computers, chart recorders and tape recorders.

  • Single Channel LPF-100B
  • Dual Channel LPF-202A
  • Useful with Epithelial and Oocyte Clamps

Item# Description U.S. List Price Quantity
64-0048 LPF-100B Low Pass Filter/DC Amplifier, Single Channel
64-0049 LPF-202A Low Pass Filter/DC Amplifier, Dual Channel Rack Mount
460-7013 (BNC-6) BNC to BNC cable, 6 feet (Pomona)
460-7032 (BNC-2) BNC to BNC cable, 2 feet (Pomona)
64-0455 (PV-830) Power Line Conditioner
1000 VA, 120 VAC 60HZ
64-0456 (PV-830CE) Power Line Conditioner 1000 VA, 220 VAC 50/60HZ
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4-Pole low pass Bessel filters with DC Amplifier Gains from 1 to 100. The LPF 100B and LPF-202A Filter / DC Amplifier signal conditioners are used to filter noise and boost signals to levels compatible with computers, chart recorders and tape recorders. Built with analog circuitry, these instruments exhibit very low noise and excellent stability.

The 4-pole low-pass Bessel filter frequencies are selected in six steps from 100 Hz to 5 kHz, and gains are selectable from 1 -100 in seven steps, in a 1, 2, 5 sequence. The full 10 kHz bandwidth is also available. DC signals at the input can be nulled with the Input Offset control. If the gain is set too high for the signal being processed, an overload indicator will light.

Single and Dual Channel Models

The LPF-100B is a single channel bench top instrument and the LPF-202A is a dual-channel model packaged in a low profile rack mountable cabinet (hardware supplied). Both models have input shorting switches that are handy for quickly establishing a zero level at the input. The LPF-202A also has a digital meter for reading DC or average voltage levels. Both models are line powered and covered by a 2-year warranty.

Specifications
Input Impedance 1 MΩ
Input Offset ± 200 mV @ input
Gains x1, x2, x5, x10, x20, x50, and x100
Noise (referred to input) 12 µV RMS DC-5 kHz, 20 µV RMS wideband
Max. Output ± 10 V
Bandwidth 10 kHz @ x100 gain
Filter 4-Pole Bessel low pass
-3 dB Frequencies 0.1, 0.2, 0.5, 1, 2 & 5 kHz
Digital Meter (LPF-202A) Low Range: ± 1.999 V
High Range: ± 19.999V
Overload Indicator Lights when output exceeds ±10 V
Power Requirements 100-130 VAC or 220-240 VAC, 50/60 Hz, 3 VA
Physical Size, (H x W x D) LPF-100B:6.3 x 14 x 23 cm, shipping weight 2.3 kg
LPF-202A:4.4 x 43.2 x 20 cm, shipping weight 4.6 kg
Warranty Two years, parts and labor
DOCUMENT DESCRIPTION
Warner Bilayer Workstation brochure (rev 060601).pdfWarner Bilayer Workstation Brochure