9250 Series Emerald Pulse Generator.9250系列翡翠冲发生器。The Emerald 9250 is the newest addition to our line of Digital Delay Pulse Generators. This unit will come standard with a 280 ppb TCXO oscillator, giving you performance you want without extra cost.翡翠9250是我们的数字延冲发生器线最新加入。本单元将标280 ppb的TCXO振器的性给你你想的没有外的用。