Models 900CT & 900BT
8 Pole
Single Channel –
Certified
High Pass Filters
Model
900H8B
900H8E
Filter Specifications
8-Pole, 6 zero
Elliptic
900H8EY
8-Pole
Butterworth
8-Pole, 6 zero
Elliptic
Transfer Function
Range fc, fr
0.1 Hz to 49.9 kHz
0.1 Hz to 49.9 kHz
0.1 Hz to 49.9 kHz
Theoretical Transfer Appendix A
Appendix A
Page 37
Appendix A
Page 38
Characteristics
Tuning Resolution
Passband Ripple
Page 29
1 part in 499
1 part in 499
1 part in 499
within each decade within each decade within each decade
0.0 dB
-0.05 dB
±0.035 dB
Pass Band Voltage
Gain
0 ± 0.2 dB to.100kHz
0 ± 0.5 dB to 120kHz. 0 ± 0.5 dB to 120kHz. 0 ± 0.5 dB to 120kHz.
0 ± 0.2 dB to.100kHz
0 ± 0.2 dB to.100kHz
(non-inverting)
Powert Bandwidth
120 kHz
120 kHz
120 kHz
Stopband
Attenuation
48 dB/Octave
-80 dB typ.
-100 dB typ.
Cutoff Frequency
Accuracy
fc
±2% max.
fc
±2% max.
fc
±2% max.
±0.5% typ.
±2% max.
±0.5% typ.
±2% max.
±0.5% typ.
±2% max.
±0.01%/°C typ.
±0.02%/°C max.
-3 dB
±0.01%/°C typ.
±0.02%/°C max.
-0.035 dB
±0.01%/°C typ.
±0.02%/°C max.
-0.5 dB
Stability
Amplitude
Phase
-360°
-323°
-419°
Filter Attenuation
80.0 dB 0.31 fc
60.0 dB 0.42 fc
3.01 dB 1.00 fc
0.00 dB 2.00 fc
80.0 dB 0.56 fr
60.0 dB 0.60 fr
3.01 dB 0.88 fr
0.03 dB 1.00 fr
0.00 dB 2.00 fr
100.0 dB 0.50 fr
(theoretical)
80.0 dB
3.01 dB
0.03 dB
0.00 dB
0.55 fr
0.94 fr
1.00 fr
2.00 fr
Total Harmonic
Distortion @ 1 kHz
<-88 dB typ.
<-88 dB typ.
<-88 dB typ.
Wide Band Noise
400µVrms typ.
100µVrms typ.
400µVrms typ.
100µVrms typ.
500µVrms typ.
150µVrms typ.
(5 Hz – 2 MHz)
Narrow Band Noise
(5 Hz – 100 kHz)
8
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e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com