25ps單次時間分辨率

1.3GHz頻率測量范圍

1nHz頻率分辨率

0.001相位分辨率

平均值和阿倫方差顯示

1—1，000，000取樣

X，Y示波器圖形輸出

硬拷貝輸出到打印機(jī)和繪圖儀

GPIB和RS—232接口

可選爐穩(wěn)晶振
12位頻率讀出分辨率

銣原子時間頻率標(biāo)準(zhǔn)

4x10-11天漂移

2GHz輸入頻率寬帶

10分鐘預(yù)熱時間

便攜操作

10MHz銣時基輸出

GPIB和RS—232接口
The SR620 measures time interval, frequency, pulse-width, rise and fall time, period, phase and events. Time intervals are measured with 25 ps rms resolution, making the SR620 one of the highest resolution counters available. Frequency is measured from 0.001 Hz to 1.3 GHz, and a choice of gates ranging from 1 period to 500 seconds are provided. The SR620 delivers up to 11 digits of frequency resolution in a 1 second measurement. It's suitable for measurement applications ranging from short-term phase locked loop jitter, to long-term drift of atomic clocks. All measurement modes are supported by