25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
Certified
Model ASC-50
Over 200 LP, HP, BP, BR
Analog & DSP Filters Options
Description
Frequency Devices’ ASC-50, is a laboratory bench-top
programmable instrument that combines familiar
analog signal input and output with the power and
flexibility of DSP. The ASC-50 provides the user with
finger-tip control of filter type, (low-pass, high-pass,
band-pass, and band-reject), operating frequency,
pole/bandwidth configuration, pre and post gain
settings, and analog/DSP filter functions - including
many not available through conventional analog
techniques. All are accessible at the touch of a button.
With a frequency range from 0.1Hz to 30kHz
combined with amplitude response of Butterworth,
Chebychev, elliptic and finite-impulse-response (FIR)
filter functions, the ASC-50 offers wide tuning flexibility
without the need for pre-defined programming.
An analog instrumentation interface provides input
gain; DC offset control and variable output gain along
with selectable single-ended and differential inputs to
accommodate a variety of driving signals. Additionally,
input DC-offset control is provided with expanded
resolution. With the exception of filter and frequency
changes all parameters of the ASC-50 can be altered
on the fly without halting signal flow. Real-time bypass
and gain-control facilitate test comparisons with and
without the filter activated.
A four button touch-pad coupled with a liquid-crystal
display (LCD) affords the user complete control of
various signal conditioning functions. Through the
LCD, the operator is prompted by a selection of
several filter types, functions, frequency and gain
settings. Less than optimum selections are indicated,
providing guidance without regimentation. Saturation
(over-range) conditions are indicated on both the input
and output permitting ease of system setup and use.
Features
Wide variety of filter types, functions and
frequencies
Precise, stable filter performance
Adjustable gain and attenuation
DC offset control
Choice of single or differential inputs
Special DSP bypass
Analog and DSP clip indicators
Filter performance display
AVAILABLE OPERATING MODES
Mode 1
Field 1 Filter type
Field 2 Filter function
Field 3 Number of poles or pole-pairs
Field 4 Q/Bandwidth
Field 5 Active/Bypass
Field 6 Corner frequency
Mode 2
Field 1 Pre-gain control
Field 2 Post/gain control
Mode 3
Field 1 Single/Differential control
Field 2 Input DC offset control
Mode 4
Field 1 Shape factor/Transition band
Field 2 Stop-band bandwidth