Model 950

Tunable Filter Instruments

1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

3

Model

950L8B

950L8L

Model

950H8B

Product Specifications

Low-Pass

Low-Pass

High-Pass

Transfer Function

8-Pole, Butterworth

8-Pole, Bessel

Transfer Function

8-Pole, Butterworth

10 Hz to 50.0 kHz

10 Hz to 50.0 kHz

10 Hz to 50.0 kHz

Theoretical Transfer

Appendix A

Appendix A

Theoretical Transfer

Appendix A

Characteristics

Page 9

Page 4

Characteristics

Page 29

Passband Ripple

0.0 dB

0.0 dB

Passband Ripple

0.0 dB

(theoretical)

(theoretical)

DC Voltage Gain

0 ± 0.1 dB typ.

0 ± 0.1 dB typ.

Voltage Gain

0 ± 0.2 dB to 100 kHz

(non-inverting)

0 ± 0.2 dB max.

0 ± 0.2 dB max.

(non-inverting)

0 ± 0.5 dB to 120 kHz

Power Bandwidth

120 kHz

Stopband

Stopband

Attenuation Rate

48 dB/Octave

48 dB/Octave

Attenuation Rate

48 dB/Octave

Cutoff Frequency

± 2% max.

± 2% max.

Cutoff Frequency

± 2% max.

Accuracy

± 0.05% typ.

± 0.05% typ.

Accuracy

± 0.05% typ.

± 2% max

.± 2% max.

± 2% max.

Stability

± 0.01%/°C typ.

± 0.01%/°C typ.

Stability

± 0.01%/°C typ.

± 0.02%/°C max.

± 0.02%/°C max.

± 0.02%/°C max.

Amplitude

-3 dB

-3 dB

Amplitude

-3 dB

Phase

-360°

-182°

Phase

-360°

Filter Attenuation

0.12 dB

1.91 dB

Filter Attenuation

80.0 dB

3.01 dB

3.01 dB

60.0 dB

60.0 dB

60.0 dB

3.01 dB

80.0 dB

80.0 dB

0.00 dB

Total Harmonic

Total Harmonic

Distortion @ 1 kHz

<-90 dB typ.

<-90 dB typ.

Distortion @ 1 kHz

<-88 dB typ.

Narrow Band Noise

50

mVrms typ.

50

mVrms typ.

Narrow Band Noise

100

mVrms typ.

(5 Hz - 100 kHz)

(5 Hz - 100 kHz)