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Keysight Technologies (Agilent HP) 3330B () Main Features and Specifications

Product Specs

  • Status Discontinued
  • Alternative No replacement.

The fully programmable HP 3330B frequency synthesizer has a frequency stability of ±1 x 10-8 per day, -50 dB signal-to-phase noise, with a constant resolution of 0.1 Hz up to 13 MHz. Amplitude can be controlled to a resolution of 0.01 dB over a 100 dB range.

Solid state displays show frequency and amplitude. Nine digits of frequency and four digits of amplitude are displayed on the 330B.

Spectral purity is a unique feature of the 330B. Spurious is >70 dB below the carrier and harmonics are >60 dB to 40 dB below the carrier, depending upon the frequency setting. As a sweeper, the 330B uses digital sweeping for linearity. Either single or continuous sweeps can be set. Parameters such as center frequency, frequency step, time per step, and the number of steps, go into the memory, then are executed by pressing a single button. The ROM operates the sweep as set up until in instructed to stop. Many of the sweep parameters can be changed while the instrument is sweeping. The instrument sweeps amplitude in steps as small as 0.01 dB. The amplitude can be stepped at the end of each frequency sweep cycle to produce a family of curves.

  • Frequency range: 0.1 Hz to 13 MHz
  • Frequency resolution: 0.1 Hz
  • Signal to phase noise (integrated): 50 dB
  • Harmonic distortion: Less than
    • At 5 Hz to 100 kHz: -60 dB
    • At 100 kHz to 1 MHz: -50 dB
    • At 1 MHz to 13 MHz: -40 dB
  • Spurious: All nonharmonically related spurious signals will be more than 70 dB below selected output level or ≤110 dBm, whichever is greater
  • Internal frequency reference: 5 MHz crystal oscillator
  • External frequency reference: Can be phase-locked with a 200 mV to 2 Vrms signal that is any subharmonic of 20 MHz from 1 MHz through to 10 MHz
  • Front or rear panel output is standard
  • Auxiliary outputs
    • 20 - 33 MHz tracking output: >100 mVrms, 50 Ω
    • 1 MHz reference output: >220 mVrms, 50 Ω (0 dBm, 50 Ω)
    • Synthesized search or tune: A minimum 0.1 Hz frequency step can be entered, which can be added to or subtracted from the synthesized output signal
    • Digital sweeping of frequency: Enter and set the center frequency, a frequency step, number of steps, time per step, and sweep direction
    • Sweep width: Product of step size and number of steps
    • Step size: Continuously adjustable in 0.1 Hz increments
    • Step accuracy: ±1 x 10-8 per day
    • Number of steps: 10, 100, or 1000
    • Time per step: 1 ms, 3 ms, 10 ms, 30 ms, 100 ms, 300 ms, 1000 ms, and 3000 ms
    • Direction of sweep: Up, both, down
    • Single sweep: Momentary pushbutton
    • Continous sweep: Momentary pushbutton
    • Sweep output: Stepped dc voltage proportional to sweep position, 0 to +10 V
  • Digital outputs
    • Step count: 0 to 1000 count on 12 BCD (1-2-4-8) lines
    • Sweep status: Line to indicate when instrument is sweeping
    • Step ready: Indicates instrument has spent the selected time per step and is ready to go to the next step
    • Sweep modification (continuous): The step size, center frequency, sweep direction, and time per step can be changed without stopping the sweep
    • Frequency step: To widen or narrow the sweep width, the frequency step size can be expanded or contracted by factors of 2 or 10
    • Sweep modification (single): The time per step and direction sweep may be changed without stopping the sweep
  • Amplitude (Maximum 2.1 Vrms into open circuit, maximum 1.05 Vrms into 50 Ω)
    • Range: +13.44 dBm to -86.55 dBm into 50 Ω
    • Resolution: 0.01 dB
    • Output impedance: 50 Ω (75 Ω, Option 001)
    • Amplitude modulation: Requires external modulation source; rear panel BNC; ALC switch must be in slow position
    • Modulating signal: 100 Hz to 10 kHz
    • Modulation depth: 0.95 Vrms modulating signal for 95% modulation depth
    • Digital sweeping of amplitude: Enter and set the center amplitude, an amplitude step, number of steps, time per step, and sweep direction
    • Sweep width: Product of step size and number of steps
    • Step size: 0.01 dB to 99.99 dB in 0.01 dB increments
    • Number of steps: 10, 100, or 1000
    • Time per step: 30 ms, 100 ms, 300 ms, 1000 ms, and 3000 ms
    • Direction of sweep: Up, both, down
    • Single sweep: Momentary pushbutton
    • Continous sweep: Momentary pushbutton
  • Digital remote control: Full programming of frequency, amplitude, and sweeping. Each key, slideswitch position, and control has a seven-bit parallel ASCII code assigned to it. Up to 15 units can be connected in parallel on the ASCII bus. Up to 63 different addresses are available.
    • Input control lines: 7 program data lines, 1 multiple response enable, 1 data strobe line, 1 remote enable line, 1 step inhibit line
    • Output control lines: 1 ready for data, 1 data accepted, 14 sweep parameter lines
  • Options
    • Option 001: 75 Ω - 1 Vrms, amplitude range +11.25 dBm to -88.74 dBm
    • Option 002: High stability crystal oven
    • Option 003: Deletion of crystal oven. 20 MHz ambient temperature crystal oscillator
    • Option 004: Isolated digital input
    • Option 005: 5 Vrms - 50 Ω output, ½ W output, amplitude range +26.99 dBm to -73 dBm