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Frequency Devices ASC-50, Руководство по эксплуатации

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AVAILABLE IIR TRANSFER FUNCTIONS

25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839

e-mail: [email protected]  •  Web Address: http://www.freqdev.com

ASC-50

Operation

Manual

17

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

10 Pole 80dB Elliptic

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

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-20

-10

0

Amplitude (dB)

4,6,8,10 Pole Butterworth

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

4,6,8,10 Pole Chebychev

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

4 Pole 60dB Elliptic

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

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-30

-20

-10

0

Amplitude (dB)

6 Pole 60dB Elliptic

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

8 Pole 60dB Elliptic

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

10 Pole 60dB Elliptic

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

4 Pole 80dB Elliptic

Normalized Frequency (Hz)

0.1

1.0

10.0

2

3

4

5

6

7

8

2

3

4

5

6

7

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Amplitude (dB)

6 Pole 80dB Elliptic

Содержание ASC-50

Страница 1: ...ocust 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 ASC 50 Operation Manual ASC 50 OPERATION MANUAL September 2001 ...

Страница 2: ...rol explanation and Chart 1 7 7 Operational Considerations 8 8 ASC 50 Specifications 10 9 Power and fuzing instructions 11 10 Theory of operation 12 11 IIR transfer function curves 16 12 FIR transfer function curves 24 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 ASC 50 Operation Manual I ...

Страница 3: ...e gain and attenuation DC offset control Choice of single or differential inputs Special DSP bypass Analog and DSP clip indicators Filter performance display Filter Types Low pass LP High pass HP Band pass BP Band reject BR Filter Functions Butterworth Buttr Chebyshev Cheby Elliptic 60dB Ell60 Elliptic 80dB Ell80 FIR 40dB FIR40 FIR 60dB FIR60 FIR 80dB FIR80 Gain Control PRE Analog pre gain range 0...

Страница 4: ...e Pair Q 2 5 10 20 Chebychev 3 4 Pole Pair Q 2 5 10 20 Elliptic 60 dB 0 1dB Ripple 3 4 Pole Pair Q 2 5 10 20 Elliptic 80 dB 0 1dB Ripple 3 4 Pole Pair Q 2 5 10 20 DIGITAL FIR 40 dB BW1 BW2 BW3 BW4 FIR 60 dB BW1 BW2 BW3 BW4 FIR 80 dB BW1 BW2 BW3 BW4 LOCATION OF FRONT PANEL CONTROLS AND TERMINATIONS 25 Locust St Haverhill Massachusetts 01830 Tel 800 252 7074 978 374 0761 FAX 978 521 1839 e mail sale...

Страница 5: ...pressing Enter or while the warning ENT flashes the user can return the display to the current active filter mode by pressing RESET E Bypass Key The internal DSP filter can be bypassed by pressing the BYP key This will bypass the DSP filter but not the input anti alias AA and output reconstruction RC filters The BYP key toggles between the active and bypass modes denoted ACT and BYP on the display...

Страница 6: ...an be reviewed without making any changes ENTER implements the selected setup BYP provides a special DSP bypass operation its use is signaled on the display RESET allows the previous setup to be restored Flashing Cursor A Flashing Cursor indicates which field is awaiting update DISPLAY MODES Three display modes register the complete range of operational choices the fourth mode provides filter char...

Страница 7: ...st 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 ASC 50 Operation Manual 5 Field 4 Q Bandwidth A Q2 Q 2 Does not apply to FIR40 FIR60 FIR80 B Q5 Q 5 Does not apply to FIR40 FIR60 FIR80 C Q10 Q 10 Does not apply to FIR40 FIR60 FIR80 D Q20 Q 20 Does not apply to FIR40 FIR60 FIR80 E BW1 FIR BW 1 Does not apply...

Страница 8: ... passes frequencies over the range Fc BW 2 The band reject BR passes frequencies outside the range Fc BW 2 Stop band Bandwidth Stop BW Band pass BP and band reject BR digital FIR filters are labeled with a bandwidth Hz that expresses the difference between the two stop band frequencies The band pass BP filter rejects frequencies outside of the range Fc BW 2 The band reject BR rejects frequencies o...

Страница 9: ...47 06 Hz Fc 23 53 Hz 1 17 kHz 294 Hz LP HP Analog Digital 47 06 Hz Fc 23 53 Hz 2 35 kHz 588 Hz BP BR Analog Digital 94 12 Hz Fc 47 06 Hz 2 35 kHz 588 Hz LP HP Analog Digital 94 12 Hz Fc 47 06 Hz 4 71 kHz 1 17 kHz BP BR Analog Digital 188 25 Hz Fc 94 12 Hz 4 71 kHz 1 17 kHz LP HP Analog Digital 188 25 Hz Fc 94 12 Hz 9 41 kHz 2 35 kHz BP BR Analog Digital 376 50 Hz Fc 188 25 Hz 9 41 kHz 2 35 kHz LP ...

Страница 10: ... which appears as linear phase shift is generally large enough that the phase contributed by the AA and RC filters is not significant Figure 1 illustrates the effects of this additional phase on typical Butterworth low pass filters with corner frequencies of 10 and 80 of system bandwidth FIGURE 1 25 Locust St Haverhill Massachusetts 01830 Tel 800 252 7074 978 374 0761 FAX 978 521 1839 e mail sales...

Страница 11: ...g voltage range of 10Volts Operation beyond this range will result is the display of one or both CLIP indicators Maximum safe input range non operating is noted in the specification DC Offset Capability The DC offset capability allows the ASC 50 to accept input waveforms with DC levels that would otherwise cause the instrument to saturate especially at high gain levels The offset value displayed r...

Страница 12: ...afe Signal Level 60V Peak max Total Harmonic Distortion 70dBV typical 7 07Vrms 1kHz Bypass Condition 30kHz BW Noise 90dBV typical Input Grounded Bypass Condition 30kHz BW We hope the information given here will be helpful The information is based on data and our best knowledge and we consider the information to be true and accurate Please read all goods supplied by us We assume no responsibility f...

Страница 13: ... white plastic tab and position pc board and tab for 230V or 240V operating voltage White dot will show in window when correctly positioned 5 Replace black plastic cover that contains new fuse 6 Plug in to electrical outlet and verify performance 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 ASC 5...

Страница 14: ...fier Gain settings single differential input control and DC offset level functions are incorporated within the input amplifier 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 ASC 50 Operation Manual 12 In In A Gain Control DC Offset DIF SNG Control Analog Saturation Detection Freq Anti Alias Filter ...

Страница 15: ...cation The DSP determines the sample frequencies loads and stores the filter coefficients begins filter operation Digital to Analog Converter The digital to analog converter D A restores an analog waveform from the DSP output data word Reconstruction Filter Smoothes the D A waveform removing sampling noise by limiting bandwidth to one fourth the sampling frequency Keypads Keypads provide the user ...

Страница 16: ...freqdev com Web Address http www freqdev com ASC 50 Operation Manual 14 Buttr Cheby Ell60 FIR40 FIR60 LP HP BP BR Ell80 FIR80 4P 6P 8P 10P Frequency Lowpass and Highpass Filter Menu Options Low Pass High Pass Filter Type Number of Poles Left or right arrow Up or down arrow Attachment 1 Menu 1 of 2 ASC50 ...

Страница 17: ...ddress http www freqdev com ASC 50 Operation Manual 15 LP HP BP BR Buttr Cheby Ell60 FIR40 FIR60 Ell80 3PP 4PP Q2 Q5 Q10 Q20 BW1 BW2 BW3 BW4 FIR80 Frequency Bandpass and Bandreject Filter Attachment 1 Menu 2 of 2 Left or right arrow Up or down arrow Menu Options Filter Type Pole Pairs Filter Q Band Pass Band Reject ASC50 ...

Страница 18: ...60dB Elliptic Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 6 Pole 60dB Elliptic Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 8 Pole 60dB Elliptic Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 10 Pole 60dB Elli...

Страница 19: ...ole Chebychev Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4 Pole 60dB Elliptic Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 6 Pole 60dB Elliptic Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 8 Pole 60dB Ellip...

Страница 20: ...0 20 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4PP Butterworth Q2 5 10 20 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3PP Chebychev Q2 5 10 20 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4PP Chebychev Q2...

Страница 21: ...tic Q5 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4 PP 60dB Elliptic Q10 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4 PP 60dB Elliptic Q20 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3 PP 80dB Elliptic Q...

Страница 22: ...P 80dB Elliptic Q10 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4 PP 80dB Elliptic Q20 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3 PP Butterworth Q2 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3 PP Butterworth...

Страница 23: ... 4PP Butterworth Q20 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3 PP Chebychev Q2 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3 PP Chebychev Q5 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3 PP Chebychev Q10 Normal...

Страница 24: ...lliptic Q2 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3PP 60dB Elliptic Q5 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3PP 60dB Elliptic Q10 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3PP 60dB Elliptic Q20 Normal...

Страница 25: ... Elliptic Q5 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3PP 80dB Elliptic Q10 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 3PP 80dB Elliptic Q20 Normalized Frequency Hz 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 4PP 80dB Elliptic Q2 Norm...

Страница 26: ...litude dB 40dB 511 Tap Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 63 Tap Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 127 Tap Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 511 Tap Normalized F...

Страница 27: ...litude dB 40dB 511 Tap Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 63 Tap Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 127 Tap Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 511 Tap Normalized F...

Страница 28: ... 40dB 511 Tap Q2 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 63 Tap Q5 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 127 Tap Q5 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 511 Tap Q5 Normalize...

Страница 29: ... 40dB 511 Tap Q2 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 63 Tap Q5 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 127 Tap Q5 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 511 Tap Q5 Normalize...

Страница 30: ... 60dB 511 Tap Q10 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 63 Tap Q20 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 127 Tap Q20 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 511 Tap Q20 Norma...

Страница 31: ...0dB 511 Tap Q5 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 80dB 63 Tap Q10 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 80dB 127 Tap Q10 Normalized Frequency Hz 0 1 1 0 10 0 2 3 4 5 6 7 8 2 3 4 5 6 7 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 80dB 511 Tap Q10 Normaliz...

Страница 32: ...0 0 Amplitude dB 40dB 511 Tap Q2 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 63 Tap Q5 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 127 Tap Q5 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 40dB 511 Tap Q5 Normalized Frequency Hz 0 ...

Страница 33: ... 10 0 Amplitude dB 40dB 511 Tap Q20 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 63 Tap Q2 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 127 Tap Q2 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 511 Tap Q2 Normalized Frequency Hz...

Страница 34: ...10 0 Amplitude dB 60dB 511 Tap Q10 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 63 Tap Q20 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 127 Tap Q20 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 60dB 511 Tap Q20 Normalized Frequency ...

Страница 35: ... 0 Amplitude dB 80dB 511 Tap Q5 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 80dB 63 Tap Q10 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 80dB 127 Tap Q10 Normalized Frequency Hz 0 4 0 6 0 8 1 0 1 2 1 4 1 6 100 90 80 70 60 50 40 30 20 10 0 Amplitude dB 80dB 511 Tap Q10 Normalized Frequency Hz ...

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