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The HP 70820A Microwave Transition Analyzer for 70000 Modular Measurement System (MMS), 4/8-width module has two identical signal processing channels. Each channel samples and digitizes signals over an input bandwidth of dc to 40 GHz. The channels are sampled simultaneously (within 10 ps), permitting accurate ratioed amplitude and phase measurements. A single synthesized low-noise oscillator drives a step recovery diode, the output of which is split into two pulse trains that drive the microwave samplers. The microwave samplers and the analog-to-digital converters (ADCs) are run at the same frequency. The maximum sampling frequency is 20 MSa/s (20 million samples per second). Specifications. Operating input range: <10 dBm (±320 mV, dc +ac peak, includes the dc offset). Maximum safe input: 16 dBm peak (±2 V pk-pk). Number of input channels: 2. Input connectors: 2.4 mm (male). Input crosstalk: < -70 dB. Nominal input impedance: 50 ohm. Programmable dc Offset: ± 320 mV. Pulse generator (modulator out) Repetition frequency: 52.9 Hz - 5 MHz. Repetition period: 6.553 ms - 200 ns. Pulse width: 6.552 ms - 100 ns. The pulse generator is phase locked to the 10 MHz reference. Pulse width and repetition period are variable in 100 ns steps. Inaccuracies in the pulse widths are dominated by the transitions times (< 5 ns).
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