krohnhite 38Data 电路图.pdf

DESCRIPTION The Krohn-Hite Model 38 Butterworth/Bessel, plug-in filter card isoneofafamilyoffiltercardsusedinKrohn-HiteProgrammable FilterSystemMainframes.Itiscarefullydesigned with theuser in mind,providingeaseofoperation,reliabilityandprice competitiveness. The 38 provides a tunable frequency range from 0.03Hz to 1MHz in the low-pass mode and 0.03Hz to 300kHz in the high-pass mode. Both modes are extended down to 0.003Hz with the 002 option. The frequency response characteristic is either maximally flat (Butterworth) for clean filtering in the frequency domain, or linear phase (Bessel) to provide superior pulse or complex filtering?is?operator?selectable. The 38 is an 8-pole, wide range, low-pass/high-pass filter or an amplifier providing gains to 70dB in 0.1dB steps. The 38 will accept input signals of 10V peak at 0dB gain and has selectable ac or dc coupling. Overload detectors are standard and assist the user?in?detecting?input?signals?or?incorrect?gain?settings. APPLICATIONS Applications of the Model 38 are ultra-sound measurements, random noise testing, sound recording, suppressing interference inaudiocommunicationsandrelatedfieldsofmedical, geological,geophysical,oceanographic,militaryandmanymore. MAINFRAMES The 38 is a plug-in card for two mainframes; Models 3905B/3905C and 3916B. The 3905B/C is a 3 high chassis, allowing up to 5 filter/amplifiercards. The 3916B allows up to 16 cards. Krohn-Hite?Corporation,?15?Jonathan?Drive,?Unit?4,?Brockton,?MA?02301Page?1?of?3 Tel:?508-580-1660;?Fax:?508-583-8989;?www.krohn-;?email:?saleskrohn-38Data.vp “Quality”?in?Test?and?Measurement?Since?1949 DC?Source/Calibrators,?Tunable?Electronic?Filters, Wideband?Power?Amplifiers Precision?Phasemeters,?Distortion?Analyzers Function?Generators,?RC?Oscillators Model?38 0.03Hz?to?1MHz,?High-Pass/Low-Pass Butterworth/Bessel?Plug-In?Filter?Card Cutoff?Tunable?Range:?0.03Hz?to?1MHz Attenuation:?48dB/Octave Filter?Modes:?Low-Pass?and?High-Pass Response:?Butterworth?and?Bessel Input?Gain?(pre-filter):?50dB?in?10dB?Steps Output?Gain?(post-filter):?20dB?in?0.1dB?Steps Input?Type:?Differential?and?Single-Ended Gain?Only?Mode:?70dB?Pre-Amplifier Low-Pass?Amplitude?Response High-Pass?Amplitude?Response RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS FUNCTION: Low-pass filter, high-pass filter; voltage gain amplifier. FILTER?MODE Type: 8-pole,?Butterworth,?Bessel. Attenuation?Slope: 48dB/octave. Tunable?Frequency?Range?fc: Low-Pass: 0.03Hz?to?1MHz High-Pass: 0.03Hz?to?300kHz Option?002: Tuning?range?from?0.03Hz?to?0.003Hz. Frequency Resolution: 3 digits, 0.1Hz to max fc; 2 digits, 0.03Hzto0.099Hz;(option002,1digit,0.003Hz to0.009Hz; 2?digits,?0.01Hz?to?0.099Hz). Cutoff Frequency Accuracy: 1%, 0.5Hz to 50kHz; 2%, 50.1kHz to max fc; 5%, 0.03Hz to 0.5Hz (option 002, 5%, 0.003Hz?to?0.5Hz). Relative?Gain?at?fc: 3dB,?Butterworth;?12.6dB,?Bessel. High-Pass?Bandwidth?(0dB?gain): 4MHz. Stopband?Attenuation: 100dB. Maximum Input: 10V peak at 0dB gain reduced in proportion to gain setting; 7 peak for LP, fc 500kHz, fsig 500kHz. Pre-Filter Gain: 0dB, 10dB, 20dB, 30dB, 40dB, 50dB, 0.2dB. Post-Filter?Gain: 0dB?to?20dB?in?0.1dB?steps,?0.2dB. Wideband Noise (2MHz bandwidth detector): 0dB gain, <300Vrms for fc ?5kHz, 50kHz.?Max.?gain,?7MHz?min.?gain;?700kHz?max.?gain. Response: 0.1dB?typical,?0.5dB?max. Gain: 0dB?to?70dB?in?0.1dB?steps,?0.2dB. Input: Differential?or?single-ended?+(in?phase),?(inverted). CMRR: 60dB?to?10kHz;?50dB?to?100kHz. Sensitivity: 3mV?peak?with?70dB?total?gain?for?10V peak?output. Maximum?Input: 10V?peak?at?0dB?gain?reduced?in proportion?to?gain?setting. Impedance: 1?megohm?in?parallel?with?100pf. Coupling: ac?(0.16Hz)?or?dc. Maximum?DC?Component: 100V?in?ac?coupled mode. Output: Maximum?Voltage?(open?circuit): 10V?peak. Maximum?Current: 80mA?peak. Impedance: 50?ohms. DC?Offset: Adjustable?to?zero?volts. Harmonic?Distortion?(1V?output): 80dB?(0.01%)?to 10kHz;?60dB?(0.1%)?to?100kHz. Wideband?Noise?(RTI,?2MHz?BW?detector): 200Vrms?min.?gain;?25Vrms?max.?gain. DC?Stability?(RTI): Typically?10mV/C. GENERAL Crosstalk Between Channels: 85dB below full scale with input?source?100kHz, 5 for fsig 500kHz, 5 times fsig/500kHz for fsig to 2MHz. Only cards purchased at the same?time. Gain?Match?Between?Channels: 0.2dB?max.?to?100kHz. Switch: For selection of Input, +(in phase), Differential or (inverted). Input/Output?Connectors: BNC. Power: 15?watts. Weights: 1.75?lbs?(.79kg). Accessories: Operating?manual. OPTIONS 002: extends?low?end?cutoff?to?0.003Hz. Extended?1?Year?Warranty: Part?No.?EW38. Specifications?apply?at?25C,?5C. Specifications?subject?to?change?without?notice. 0.03Hz to1MHz Butterworth/Bessel Plug-InFilterCardModel38 Krohn-Hite?Corporation,?15?Jonathan?Drive,?Unit?4,?Brockton,?MA?02301Page?2?of?3 Tel:?508-580-1660;?Fax:?508-583-8989;?www.krohn-;?email:?saleskrohn-38Data.vp RadioFans.CN 收音机爱 好者资料库 0.03Hz to1MHz Butterworth/Bessel Plug-InFilterCardModel38 Krohn-Hite?Corporation,?15?Jonathan?Drive,?Unit?4,?Brockton,?MA?02301Page?3?of?3 Tel:?508-580-1660;?Fax:?508-583-8989;?www.krohn-;?email:?saleskrohn-38AData.vp Group?Delay Transient?Response Phase?Response RadioFans.CN 收音机爱 好者资料库 f/fc (Hz) Amp (dB) Phase (Deg) Delay (1) (sec) 0.10-160.00691.000.819 0.20-112.00661.000.828 0.30-83.70631.000.843 0.40-63.70600.000.867 0.50-48.20568.000.903 0.60-35.50535.000.956 0.70-24.80499.001.040 0.80-15.60459.001.190 0.85-11.60437.001.290 0.90-8.060413.001.400 0.95-5.150386.001.480 1.00-3.010360.001.460 1.20-0.229275.000.873 1.40-0.020226.000.540 1.60-0.002194.000.380 1.800.000170.000.287 2.000.000152.000.226 2.500.000120.000.139 3.000.00099.200.094 4.000.00074.000.052 5.000.00059.000.033 6.000.00049.000.023 7.000.00042.100.017 8.000.00036.800.013 9.000.00032.700.010 10.000.00029.400.008 Theoretical Transfer Characteristics Note (1) Normailzed Group Delay: is normailzed to a frequency of 1.0Hz. The actual delay is the normalized delay divided by the actual corner frequency (fc). 8-Pole High-Pass Butterworth f/fc (Hz) Amp (dB) Phase (Deg) Delay (1) (sec) 0.000.0000.000.506 0.10-0.029-18.200.506 0.20-0.117-36.400.506 0.30-0.264-54.700.506 0.40-0.470-72.900.506 0.50-0.737-91.100.506 0.60-1.06-1090.506 0.70-1.45-1280.506 0.80-1.91-1460.506 0.85-2.16-1550.506 0.90-2.42-1640.506 0.95-2.71-1730.506 1.00-3.01-1820.506 1.10-3.67-2000.506 1.20-4.40-2190.506 1.30-5.20-2370.506 1.40-6.10-2550.505 1.50-7.08-2730.504 1.60-8.16-2910.502 1.70-9.36-3090.498 1.80-10.7-3270.492 1.90-12.1-3450.482 2.00-13.7-3620.468 2.25-18.1-4020.417 2.50-23.1-4360.352 2.75-28.3-4650.291 3.00-33.4-4890.241 3.25-38.3-5090.201 3.50-43.1-5260.170 4.00-51.8-5520.126 5.00-66.8-5870.077 6.00-79.2-6100.052 7.00-89.8-6260.038 8.00-99.0-6380.029 9.00-107.0-6470.023 10.00-114.0-6550.018 Theoretical Transfer Characteristics Note (1) Normailzed Group Delay: is normailzed to a frequency of 1.0Hz. The actual delay is the normalized delay divided by the actual corner frequency (fc). DOC# KHFDAT01 8-Pole Low-Pass Bessel