Products > Test Equipment
1104x-e and 10mhz
2N3055:
--- Quote from: jonpaul on February 12, 2023, 04:12:51 pm ---Used Leo B GPDSO for many years, very reliable and sensitive antenna input, usually locks in 30 sec
Use the LB utility to see the lock status.
By definiton a GPDSO locked to GPS must have exact accurate freq.
Your scpoe is wrong.
In my lav, Yokogawa, TEK, Lecroy y have an external REF FREQ input for the clock.
Otherwise digital measurements like period, freq will have the internal XO/TCXO error. Some may have a trimmer cap to set the xtal to 10.0000 MHz.
See if your Chinese copy scope has an EXT REF in and the requirements.
Jon
--- End quote ---
That is inexpensive scope that cost less than one of the Tek probes you like so much. Read this sentence again. Very powerful, excellent scope. That thousands of people are doing serious work with, every day.
It is working from it's own timebase and it has 3 ppm error (the factory spec is 25ppm) which is factor 8x better than promised. OP didn't specify at what temperature his/her lab is.
I would say our Chinese friends did splendid job here. Before they started selling these very inexpensive and excellent devices, most us from the west couldn't afford most of the western made T&M devices, unless they were really hoby grade or old stuff from whatever source. That applies to both hobby users but also for small companies. And yes, in this case Chinese are better friend to us than USA (or German) companies selling inferior products at extortionate prices...
I choose who is good or not by how they treat me, not by what "sales pitch" and false promises they give. Talk is cheap.
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