KEYSIGHT TECHNOLOGIES
2 Channel 10Hz to 350MHz Universal Frequency Counter/Timer with LXI-C/LAN, USB, GPIB Connectivity
FLUKE
电器测试仪, 1000计数, 1000V / 100A, 自动量程显示, OpenJaw?电流
Two Channel Universal Frequency Counter with 12 Digits/sec Resolution and 350MHz Input Channel
Single Channel RF Frequency Counter with 10 Digits/sec Resolution and 350MHz Input Channel