25ps单次时间分辨率

1.3GHz频率测量范围

1nHz频率分辨率

0.001相位分辨率

平均值和阿伦方差显示

1—1，000，000取样

X，Y示波器图形输出

硬拷贝输出到打印机和绘图仪

GPIB和RS—232接口

可选炉稳晶振
12位频率读出分辨率

铷原子时间频率标准

4x10-11天漂移

2GHz输入频率宽带

10分钟预热时间

便携操作

10MHz铷时基输出

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