Symmetricom / Microsemi XLi time & frequency standard is the most playable kit for the time domain and frequency domain application, it uses the source (GPS etc) discipline oscillator (Ruofferium, OCXO or TCXO), then output board sync to the oscillator, it uses modular design, and professional design for each part, also the whole metal heavy body;
if you not only care the time domain (frequency peak to peak offset, jitter, deviation), also care much more frequency domain (phase noise), then the sale is good for you;
the source is Trimble MT48 GPS, no 1024 weeks rollover problem, no leap second problem, the time/date is same as UTC time;
the oscillator is high stability 10MHz OCXO oscillator (STP2177, with low phase noise);
the output using 87-8040 card (10MHz enhanced low phase noise card), please check the phase noise testing diagram;
please search Google for the symmetricom XLi manual.
the firmware version is 2.4, all the software option enabled;
to set the kit, you can use front keyboard, GUI or RS232 command, the most easy way is use the RS232 command, quite simple;
the sale include:one used symmetricom XLi standard (Made in USA);one new USB-232 cable (FTDI chip, design in USA)
free ship to US 48 states.