The HP/Agilent 8648D-1E5 4GHz signal generator (9 kHz to 4 GHz) supports AM/FM/phase modulation with ±1 dB accuracy up to 2.5 GHz.
The device has 300 storage registers with the sequence and register numbers displayed. Up to 10 sequences are available with 30 registers each.
It features: optional 1E5 high-stability timebase (<±0.1 ppm/yr), 0.001 Hz resolution, output range from +10 to -136 dBm and weighs 8.5 kg.