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NF 3660A HF Programable Low-pass Filter

NF 3660A HF Programmable Low-pass Filter 1MHz to 100MHz

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NF 3660A High Frequency Programable Low-pass Filter

The 3660A is a programmable cut-off frequency lowpass filter with very high frequency range, max.100MHz.

Since the roll-off of the low-pass filter is as steep as 48dB/oct, cut-off frequency can be set to required frequency with 2-digits resolution.

Variable cut-off frequency : 1MHz to 100MHz

Max flat/phase linear switch

Roll-off : 48dB/oct

Group delay ripple : 10ns or less

Available for Highpass filter 10Hz to 100kHz


Applications include:

Mobile communication 

  • For I-Q signal measurement in the base band area of W-CDMA, cdma 2000

Memory media 

  • For read and write signal measurement of MO, HD etc

Video media

  • For optimum filter designing HDTV, Digital VTR etc.


Cutoff frequency 1MHz to 100MHz
Filter mode LP-MF(maximum flat), LP-PL(phase linear),HPF-MF(option:3663), THRU
Pass band gain X 1, X 2, X 5 and X 10
Rolloff 48dB/oct
Input impedance 50Ω or 75Ω *1
Input equivalent noise 500µVrms or less at BW = 1GHz
Output impedance 50Ω or 75Ω *1
GPIB SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT0, C0
Power requirements AC100, 120, 220 or 240V ± 10% (max. 250V), switchable, approx. 60VA
Dimensions(mm) 432(W) X 132.5(H) X 400(D)
Weight approx. 11.5kg