Products:
Model 440
High Performance Four-Channel Amplifier and Signal Conditioner
Description:
The Brownlee Precision Model 440 incorporates four channels of sophisticated amplifier and filter circuitry in a friendly, easy to use instrument. Each channel consists of a high gain/low noise amplifier, an 8-pole Bessel lowpass filter, a highpass filter, a line notch filter, and an output offset control. A control knob sets the amplifier parameters and the values are displayed on a bright LED alphanumeric readout.
channel detail
Key Features:
- Clear front panel controls for all settings
- Gains from 0.1 to 10,000 in fine, calibrated steps
- Single-ended or differential inputs
- 8-pole Bessel lowpass filter with range 20 Hz to 50 kHz
- Highpass filter with frequency range .01 Hz to 500 Hz
- Output offset control to shift output up to +/- 10 Volts
- Auto-Zero feature to reset the output to the baseline level
- Notch filter to suppress line noise
- Digital voltmeter on channels 1 and 2
- Memories to hold multiple setups
- Low noise circuitry
- Self-trimming feature to remove internal offsets
- Powerful output circuit which can directly drive transducers
- Wide bandwidth: greater than 200 kHz on all gains
