Keysight formerly Agilent T&M 8553B

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The HP 8553B is a spectrum analyzer RF section, which can be used with the 141T (140 Series) spectrum analyzer display section, the 8552A/B spectrum analyzer IF sections, and the 8443A tracking generator/counter.

The analyzer is a highly sensitive superheterodyne receiver with spectrum scanning capabilities up to 110 MHz. Output video from the receiver circuits is applied to the CRT in the display section. A signal or group of signals can be analyzed in the frequency domain. Input signals are plotted on the CRT as a function of amplitude versus frequency. The amplitiude of the CRT is calibrated in absolute units of power (dBm) or voltage (µV/mV), so absolute and relative measurements of both amplitude and frequency can be made.

Controls of the instruments are arranged for easy operation. For wide spectrum analysis, the operator can use a preset scan of 0 to 100 MHz. For more detailed study, the spectrum width can be progressively narrowed to .2 kHz, or the scanning capabilities can be eliminated altogether to use the 8553B as a fixed frequency receiver. A bandwidth of 300 kHz is automatically selected for preset scan operation. For variable scan and fixed frequency operation, narrower bandwidths can be selected by the operator.

• Frequency range: 1 kHz to 110 MHz
• Resolution bandwidth: IF bandwidths of 10 Hz to 300 kHz
• Absolute amplitude calibration range
  • Log: -130 to ±10 dBm
  • Linear: 0.1 µV/div to 100 mV/div
• Dynamic range
  • Average noise level: <-100 dBm with 10 kHz IF bandwidth
  • Spurious: Below a -40 dBm signal at the input mixer—All image and out-of-band mixing responses, harmonic and intermodulation distortion more than 70 dB down, 2 MHz to 110 MHz; more than 60 dB down, 1 kHz to 2 MHz. Third order intermodulation products more than 70 dB down, 1 kHz to 110 MHz
  • Residual responses (no signal present at input): With input attenuation at 0 dB - <-110 dBm (200 kHz to 110 MHz), <-95 dBm (20 kHz to 200 kHz)
• Calibrator output
  • Amplitude: -30 dBm
  • Frequency: 30 MHz
• Input impedance: 50 Ω nominal
• Maximum input level: Peak or average power ±13 dBm (1.4 Vac peak), ±50 Vdc
• Auxiliary outputs
  • Vertical output: ~0 to -0.8 V for 8 div deflection on CRT display, ~100 Ω output impedance
  • Scan output: ~-5 to ±5 V for 10 div CRT deflection, 5 kΩ output impedance
  • Pen lift output: 0 to 14 V (0 V, pen down)