The Agilent 70900B is the master control module for the modular spectrum analyzers and surveillance receivers. It is also a component of the lightwave signal analyzers. The Agilent 70900B LO has two main functions in the Agilent 70000 spectrum analyzers: as the synthesized local oscillator (LO) and as the master control module for the system. As a spectrum analyzer local oscillator, it affects phase noise, stability, and frequency accuracy. The Agilent 70900B is the reason that the analyzer has excellent phase noise performance of -108 dBc/Hz at 10 kHz offset from the carrier. The synthesis technique has millihertz resolution for accurate frequency control. The fast tuning speed of the LO directly relates to the tuning speed of the analyzer. As the master control module, the Agilent 70900B determines system features, slave module control, command processing speed, and GPIB speed. The combination of hardware and processing power provides fast tuning for surveillance applications and automatic testing.

SPECIFICATIONS:

• 100 MHz IN:
  Frequency: 100 MHz
  Power required: 0 dBm ±3 dB
  Impedance: 50Ω (nominal)
• 300 MHz OUT:
  Frequency: 300 MHz
  Power: 0 dBm ±1 dBm
  Impedance: 50Ω (nominal)
• CALIBRATOR:
  Frequency Accuracy (specification): 300 MHz x frequency reference error
  Power (specification): -10 dBm ±0.3 dBm
  Impedance: 50Ω (nominal)
• EXTERNAL TRIGGER IN:
  Line Type: TTL Positive Edge 2 TTL loads
• HSWP IN/OUT:
  Line Type: TTL (open collector)
  Sweep condition: low = not ready to sweep
  Maximum Delay: 200 µs from HSWP high to sweep
  Maximum Current Draw: 16 mA
• LO OUT:
  Frequency: 3.0 GHz to 6.6 GHz
  Power: +7 to 15 dBm
  Impedance: 50Ω (nominal)
• SWEEP:
  Range: 0 to 10 V
  Accuracy: 2%
• TUNE + SPAN OUT:
  Range: 4.5 to 9.9 V
  Sensitivity (for LO signal): 1.5 V/GHz
• VIDEO IN:
  Range: 0 to 2 V

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