US sales of super-excellent HP HP8657B signal generator = HP8656B stable performance, high quality and low price of programmable synthesized signal generator covering the frequency range of 0.1 ~ 990MHz. Precise output control used equipment: HP8657A / HP8656B / HP8657B signal source HP8656B with absolute level accuracy of ± 0.1dB and 0.1dB resolution, the power level in the range of + 13 ~ -127dBm calibrated. The output level can be adjusted to compensate for the loss of the generator outside. RF leakage through good shielding, the value <0.1μV, 25W reverse power protection to prevent accidental damage. Multiple modulation HP8657A / HP8656B / HP8657B signal source HP8656B AM and FM modulation can be performed simultaneously. The instrument provides 400Hz 1kHz and internal sources, and also can accept an external source modulation. AM is AC-coupled, and can be either AC-coupled FM can also be DC-coupled. DC-coupled exceptionally stable (within 1 hour drift <10Hz) and precision (precision center frequency of ± 500Hz). Other notes: HP8656B HP8656B synthesized signal generator is stable performance, high quality and low price of programmable synthesized signal generator covering the frequency range of 0.1 ~ 990MHz.