410 SPECTRUM GENERATOR/DOUBLER Versatile broadband operation Models 10511A, 10515A HP 10511A Spectrum Generator HP 10515A Frequency Doubler The Hewlett-Packard l05llA Spectrum Generator is a The Hewlett-Packard Model 1051 5A Frequency Doubler passive device that generates a train of 1 nanosecond wide is an ideal accessory for use in extending the usable frequency pulses when driven by a sinusoidal signal source. The range of signal generators, frequency synthesizers or other l05llA was specifically designed as an accessory to the HP signal sources. Operating on input frequencies of 0.5 MHz to 500 MHz it provides a doubled output in the range of 1 5100A Frequency Synthesizer. However, it is useful with MHz to 1 GHz. This 50 ohm device uses a full-wave recti- any 50R source that can provide the proper input signal. fier circuit which is extremely flat over its entire frequency With a sine wave input, in the frequency range of 10 MHz to 75 MHz, a spectrum of harmonics is generated. range. The frequency response is very flat (< f 1 dB over This spectrum contains all harmonics of the input frequency entire range typically), and undesired harmonics are very to the 1 GHz region. To extract a desired harmonic, a 50R well suppressed. bandpass filter can be cascaded with the 10511A to give The output of this unit does not have an internal dc re- turn so that it will provide a very broadband ac to dc con- a sinusoidal output. The HP 230A Power Amplifier (tuned) version only if not dc terminated. This mode of operation may be used for higher level outputs for harmonics up to is useful for detection of low level amplitude modulations. 500 Ht. Operation of the 10511A with the 5100A without a The 10515A may be used with the following Hewlett- bandpass filter on the output produces a pulse train whose Packard instruments (this is only a partial listing) : repetition rate is precisely controlled. The 10511A, with a 5100A Frequency Synthesizer 606A Signal Generator tuned filter, produces precise CW frequencies between 50 5102A Frequency Synthesizer 3200B VHF Oscillator MHz and 500 MHz. 5 1 O3A Frequency Synthesizer 608 Signal Generators 5 105A Frequency Synthesizer Specifications 1051 1A Specifications 10515A Frequency range: 0.5-500 MHz input; 1-1000 MHz output. Input requirements Impedance: 500 nominal (source and load). 25 to 50 MHz.* Frequency range: Input signal voltage: 0.5 - 3.0 V,,,,. Drive level: 1 to 3 volts RMS available to 500. Input signal Power: 180 mW (maximum). Conversion loss:* output < 12 dB (typically <11 dB) for >1 volt Pulse width: 1 nanosecond, & 15% at mid-amplitude. <13 dB (typically <12 dB) for >0.5 volt Pulse height: 0.75 volt minimum for minimum drive level. Suppression of 1st and 3rd harmonic of input:* Impedance: 50R (nominal). >30 dB for 0.5 to 50 MHz input (typically >35 dB). Available harmonic power: -19 dBm minimum for any >IO dB for input to 500 MHz (typically >I5 dB). harmonic number between 1 and 10. Connectors: input: BNC male; output: BNC female. Dimensions: diameter: 0.7” (18 mm); length: 2.5” (64 General mm) . Dimensions: 3 in. long, ly8 in. dia. (76 x 41 mm). Weight: net, approximately 2 oz (56 grams) ; shipping, 1 Ib Weight: net, 3 02 (85 grams). Shipping, 1 Ib (0,45 kg). (0945 kg). Price: model 10515A, 5120.00. Price: model 10511A, Sl50.00. ‘With a 50 ohm resistive load and a single input frequency. Suppression values *Useful operation is obtained for input frequencies from 10 MHz to 75 MHz. are referred to the desired output level.