Used AGILENT 8656B Buy / Purchase at the right Price.
Custom-Cal has a used AGILENT 8656B 990 MHz Synthesized Signal Generator in stock and ready for purchase at a fair price. All units sold by Custom-Cal are provided with an applicable NIST traceable calibration/performance verification and a 90 day warranty (unless otherwise noted). With this added service, you can be confident that you are buying a fully functional unit that meets OEM specifications.

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AGILENT 8656B 990 MHz Synthesized Signal Generator


General description of the used AGILENT 8656B for sale.
The HP 8656B is a programmable synthesized signal generator, covering a frequency range of 0.1 to 990 MHz, with a resolution of 10 Hz. It also provides a frequency underrange to 10 kHz with uncalibrated output. The frequency switching speed is <150 ms to be within 100 Hz of final frequency. The phase offset is adjustable in 1 degree increments as well. The 8656B has high stability, with a timebase aging rate of +/-2 ppm/year. The Agilent 8656B has low spurious signals. With an output level of <= +7 dBm, harmonics are < -30 dBc. Non-harmonics (greater than 5 kHz from carrier in CW mode) are < -60 dBc. Residual FM is also minimal, with <7 Hz rms maximum and <2 Hz minimum across ther entire frequency range, in a post detection noise bandwidth of 0.3 to 3 kHz. Residual FM in a 0.05 to 15 kHz noise bandwidth is a maximum of <15 Hz rms and minimum of <4 Hz rms across the entire frequency range. Residual AM in a 0.05 to 15 kHz post detection noise bandwidth is 0.025%. SSB phase noise in CW mode with a 20 kHz offset is a maximum of <-126 dBc/Hz and minimum of <-114 dBc/Hz. The output level range into a 50 ohm load is -127 dBm to 13 dBm, or 17 dBm with uncalibrated output. THe output level resolution is 0.1 dB, and the absolute level accuracy is <+/-1.0 dB in a range of 123.5 to 990 MHz. LEvel flatness is +/-1.0 dB at an output level setting of 0.0 dBm across the entire frequency range. The generator output is protected from up to 50 watts (from a 50 ohm source) to 990 MHz, with a maximum dc voltage level of 25V. Amplitude modulation depth has a range of 0 to 99% up to +7 dBm and 0 to 30% up to +10 dBm, with a resolution of 1%. AM rate can be either 400 Hz and 1 kHz for internal, or 20 Hz to 40 KHz for external. Internal AM distortion rates range from <1.5% from 0 to 30%, <3% at 31 to 70% and <4% at 71 to 90% AM. The AM display accuracy, for depths <90% internal and levels <+7 dBm, is <+/-2% + 4% of reading. THe incidental phase modulation at 30% AM depth and internal rates is <0.3 radians. Frequency modulation peak deviation is a maximum of 99 kHz in AC and DC mode, and a minimum of 50 kHz in AC and DC mode. The internal source FM rate for 400 Hz and 1 kHz is +/-3%. The external source FM rate ranges from dc to 50 kHz when dc coupled, and 20 Hz to 50 kHz when ac coupled. The center frequency accuracy in dc FM mode is <+/-500 Hz, while the stability is <10 Hz/hour. The FM distortion for internal rates is <0.5%. The FM indicator accuracy is +/-5% of reading at internal rates. Incidental AM for a centeer frequency of >=500 kHz with a peak deviation of <20 kHz for internal rates is <0.1%. The Agilent 8656B comes with an HP-IB interface with a wide function range: SH0, AH1, T0, L2, SR0, RL1, pp0, DC1, DT0, C0 and E1. It is also available with 6 options: 001 (high-stability timebase), 002 (RF connectors on rear panel only), 907 (front handle kit), 908 (rack flange kit), 909 (rack flange and front handle kit), 910 (additional operating and service manual.

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