Instruments > 9002

Model 9002

Dual Channels


Ordering Information

Download Data sheet PDF File

Download Operating Manual PDF File

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Additional Product Information
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U.S. Selling Price (Chassis)

4-Pole Filter
8-Pole Filter
900B - $1,100.00
900C -    $900.00
$540.00 ea.
$640.00 ea.
Orders for Export U.S. Selling Price + 20%
Minimum Order Value $150.00 F.O.B. Ottawa, IL
Lead-Time: 3-4 weeks A.R.O. Accept Visa, Mcard, Amex




Frequency Devices Model 9002 Dual Channel Filter/Amplifier Instrument represents a state-of-the-art combination of performance, utility, and economy. The instrument is fully self-contained, with a user configurable 110 or 220 VAC system power supply, a digital controller, display interface electronics, and mix and match filter cards tunable from 0.1 Hz to 102.4 kHz, (Optional 204.8 kHz). Each 9002 can be configured with two independent low-pass channels, high-pass channels or a high-pass/low-pass combination for band-pass operation. Filter transfer functions must be specified at time of order.

Designed with ease-of-use in mind, control programs share non-volatile random-access-memory (RAM) on the system controller card that allows for key pad or remote programming via the IEEE-488bus. The instrument is encased in a compact 3.5"H x 8.5"W x 17.0"D enclosure for bench-top use or can be mounted in a standard 19" half-rack slot.


  • 0.1 Hz to 102.4 kHz Tuning Range
  • Selectable single-ended or differential input
  • Gain/phase matched channels
  • Memory storage for up to 8 set-ups per channel
  • Programmable AC/DC coupling
  • Fine resolution pre/post filter gain
  • Front/rear BNC connectors for analog I/O


  • Anti-aliasing
  • Sound measurements
  • Noise testing
  • Audio communications
  • Medical research
  • Industrial process control
  • Seismic Analysis
  • Vibration Analysis




  8-pole Butterworth
  8-pole, 6-zero elliptic 1.77
  8-pole, Bessel
  8-pole, 6-zero constant delay
  8-pole, 6-zero elliptic (200 kHz)
  4-pole Bessel
  4-pole Butterworth
  8-pole, Bessel (200 kHz)
  8-pole, Butterworth (200 kHz)


  8-pole Butterworth
  8-pole, 6-zero elliptic 1.77
  8-pole, 6-zero elliptic (200 kHz)
  4-pole Butterworth
  8-pole, Butterworth (200 kHz)



(@ 25°C and rated power Input)

  • Programmable Freq. Range (fc):
    0.1 Hz - 102.4 kHz
    (Optional 204.8 kHz)
  • Interface: IEEE-488
  • Frequency Resolution: 3.5 digits
  • Pre- and Post-Filter Gain:
    1.00 to 13.75 in steps of 0.05
  • Offset Temp. Coeff.: 50 µV/°C
  • Phase Match:
    See filter specifications
  • Amplitude Accuracy:
    See filter specifications
  • Harmonic Distortion @ 1 kHz:
    -90 dB typ.
  • Wide Band Noise (5 Hz - 2 MHz): 200 µVrms typ.
  • Narrow Band Noise
    (5 Hz -100 kHz): 50 µV
    rms typ.
  • Signal l/O: BNC Front and Rear
  • Power Connector:
    110,120, 220, 240 VAC @ 50/60 Hz
  • Power: 30 watts
  • Memory: 8 set-ups/channel
  • Operating Temperature:
    0°C to 50°C
  • Dimensions:
    3.5"H x 8.5"W x 17.0"D,
    8.89cm H x 21.59cm W x 43.18cm D
  • Shipping Weight:
    15 Ibs., 6.8 kg

Input Characteristics

  • Input Impedance:
    • Differential: 2 Mohm Shunted by
      24 pF to Analog Ground
    • Single Ended 1 Mohm Shunted by
      47 pF to Analog Ground
  • Coupling: AC or DC,
    programmable from front panel
  • Maxium Input Signal: ±10V pk @ 0 dB
  • Input Voltage:
    Linear Differential: 20V pp (gain set @ 0 dB)
  • Max Safe Differential: Any Continuous Value
    between ± 100V
  • Max Safe Common Mode:
    Any Continuous Value between ± 100V
  • Common Mode Rejection Ratio with
    2kohm Source Unbalance and 0 dB Gain:
    60 dB typ.

Output Characteristics

  • Full Power Bandwidth: 200 kHz
  • Small Signal Bandwidth (1 V p-p): 400kHz @ -3 dB
  • Output Impedance: 50 ohms
  • Offset Voltage: ± 2 mV (Pre- and Post-gain 0 dB)
    DC coupled option only. Adjustable to zero via
    rear-panel adjustment.
  • Current: ± 50 mA into 50 ohms
  • Maximum Voltage (open circuit): ±10V pk.
  • Cross-talk between channels: -90 dB max.,
    0 to 100 kHz


  • 19" Rack Mount Assembly, holds 2 Instruments,
  • Additional Operation Manual


Ordering Information

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 statements, recommendations or suggestions herein in conjunction with our conditions of sale which apply to all goods supplied by us. We assume no responsibility for the use of these statements, recommendations or suggestions, nor do we intend them as a recommendation for any use which would infringe any patent or copyright.

Frequency Devices, Inc.
Your engineering partner for signal conditioning
  1784 Chessie Lane
Ottawa, IL 61350

Fax: (815) 434-8176


Phone: (815) 434-7800
or (800) 252-7074 (U.S. only)

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All Rights Reserved