The 3360 Series
Family
Model 3361 -
Single Channel with selectable HP/LP Butterworth/Bessel
Model 3362 -
Dual Channel with selectable HP/LP/BP Butterworth/Bessel
Model 3364 -
Four Channel with selectable HP/LP/BP Butterworth/Bessel
Features
Attenuation: 24dB/Octave
Filter Mode: Selectable
Low-Pass and High-Pass
Response: Selectable
Butterworth and Bessel
Input: Differential and
Single-Ended
Input Gain: 0dB to 50dB
in 10dB steps
Output Gain: 0dB to 20dB
in 0.1dB steps
Battery Option
Options 002:
Lowers low end cutoff
to 0.005Hz. BK-330: Line/battery operation, Model 3362 only. Rack Mount Kit: Part No.
RK-314, permits installation
of the Model 3360 Series
into a standard 19" rack spacing. Extended 1 Year Warranty:
Part No. EW3361, EW3362
or EW3364
DESCRIPTION The
Krohn-Hite Model 3360 Filter Series are one, two or four channel filters providing
ease of operation and the reliability Krohn-Hite has been known for since 1949;
along with a price that will fit any budget.
The 3360 Series provides
a tunable frequency range from 0.1Hz to 200kHz, and with the 002 option, the
range is extended to 0.005Hz. The frequency response characteristic is selectable
to either maximally flat (Butterworth) for clean filtering in the frequency
domain, or linear phase (Bessel) to provide superior pulse for complex filtering.
Each channel of the
3360 Series is a selectable low-pass or high-pass, 4-pole filter providing an
input gain to 50dB, and an output gain to 20dB selectable in 0.1dB steps. The
3360 Series will accept input signals to ±10V peak at 0dB gain and has selectable
ac or dc coupling. Memory is available for storing a set-up of the instrument
which can be recalled with a simple command.
BAND-PASS/BAND/REJECT
OPERATION With the
Model 3362 and 3364 models, the user can simply connect two channels in series to achieve
band-pass operation or connect the two in summed parallel for band-reject
operation.
APPLICATIONS Applications
of the Model 3360 are anti-aliasing, ultra-sound measurements, random noise
testing, sound recording, suppressing interference in audio communications and
related fields of medical, geological, geophysical, oceanographic, military
and many more.
SPECIFICATIONS
The following specifications
apply to each channel.
FUNCTIONS Low-pass
filter, high-pass filter. 2 and 4 channel models provide one and two channel
(s) respectively of band-pass or band-reject via external connections.
NUMBER OF CHANNELS
Model
Channels
3361
1
3362
2
3364
4
FILTER CHARACTERISTICS
Type:
4-pole, Butterworth/Bessel. Attenuation: 24dB/octave. Tunable Frequency Range fc: 0.1Hz to 200kHz;
(option 002, 0.005Hz). Frequency Resolution: 0.001Hz, 0.1Hz to 0.999Hz; 3 Digits, 1Hz to
200kHz, (option 002, 0.001Hz from 0.005Hz to 0.1Hz). Cutoff Frequency Accuracy: ±3%. Relative Gain at fc: –3dB, Butterworth; –7.58dB,
Bessel. High-Pass Bandwidth (0dB Gain): >2MHz. Stopband Attenuation: >80dB. Wideband Noise (2MHz bandwidth detector): 0dB gain, <400µVrms.
Max. gain, <25µVrms RTI. Harmonic Distortion (1V input, 0dB gain): –60dB (0.1%) to 10kHz;
–50dB (0.3%) to 100kHz. DC Stability: Typically ±1mV/°C. Input: Differential or single-ended.
Pre-Filter Gain: 0dB, 10dB, 20dB, 30dB, 40dB, 50dB, ±0.2dB.
Impedance: 1 megohm in parallel with 25pf.
Maximum Input: ±10V peak at 0dB gain, reduced in proportion to gain
setting.
CMRR: >60dB to 10kHz; >50dB to 100kHz.
Coupling: ac (0.16Hz) or dc.
Sensitivity: 3mV peak with 70dB total gain for 10V peak output.
Maximum DC Component: ±100V in ac coupled mode.
Output: Post-Filter Gain: 0dB to 20dB in 0.1dB steps, ±0.2dB.
Maximum Voltage (open circuit): ±10V peak.
Maximum Current: ±80mA peak.
Impedance: 50 ohms.
DC Offset: Adjustable to zero volts.
GENERAL Crosstalk
Between Channels ( input source £50 ohms): –80dB for fsig £200kHz,
–70dB for fsig >200kHz. Memory: 9 stored set-ups. Self-Test Diagnostics: MPU checks unit upon power-up. Display indicates
failure mode. Displays: 7 segment, green, LED; 0.3" high. Operating Temperature: 0°C to 50°C. Isolation to Chassis: ±200Vdc. Input/Output Connectors: BNC. Power Requirements: 90-132/180-264 volts ac, 50Hz-400Hz, 10 watts (3361),
15 watts (3362), 30 watts (3364).
Dimensions and Weights: 3.5“ (9cm) high, 14" (36cm) wide, 12.5” (32.13cm)
deep; 12 lbs (5.4kg) net, 14 lbs (6.3kg) shipping. Accessories: 3-terminal line cord; operating manual.
OPTIONS
002:
extends low
end cutoff to 0.005Hz. BK-330: Line/battery operation, Model 3362 only. Rack Mount Kit: Part No. RK-314, permits installation of the Model 3360
Series into a standard 19" rack spacing. Extended 1 Year Warranty: Part No. EW3361, EW3362 or EW3364.
