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| What is replacing the good old frequency counters these days? |
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| KungFuJosh:
I don't know if all of them do, but Siglent's AWG line certainly does have dedicated frequency counters. I have the SDG2122X and the counter is excellent. There's a dedicated BNC for the counter on the back of the AWG. |
| RoGeorge:
Rigol DG4102 it's a generator (AWG), though it has a BNC input too, can count/measure frequency. Doesn't have fancy features, but it's a hardware counter and can do some statistics. About 200MHz max F, either 50\$\Omega\$ or HiZ input, the instrument has an input for an external 10MHz reference clock if needed. See page 7/10 for the counter specs https://www.batronix.com/pdf/Rigol/Datasheet/DG4000_DataSheet_EN.pdf |
| Electro Fan:
I don’t know anything about the eBay sellers but BG7TBL makes several models. https://www.ebay.com/itm/266292615921?hash=item3e0046daf1:g:3JUAAOSw~epkhnjR&amdata=enc%3AAQAIAAAA8Ac8sujh4emiUzwqHWcd4daFPItG5M3lz44k1XvpItpjxy20cFPwGBDYeTJoDBDRPrrFwy8cXcRFPP2rBXJitMtFKNYIM2uFaZDf9HXwu8N3hzvAy0kPsQmbcLc1hn2i9gTFXTRIy2C6yU7D2oKbO0ESKM46EUyv4%2Fnez7tG9CmiwA0vdSdpNbN%2Fg0sztiYt73sE0ktuIwPK%2Bazm4OIy6ga6Hx1SbxYWKAyMDncfeNWeMtGUwJwINz%2FKImuqmbp2SKHq2NY7UPKH541tiw8j%2FJzqoGrO2rn8WVVSeJObcBbLtmp2CD7tUrbK0OY1hrKYMQ%3D%3D%7Ctkp%3ABk9SR8D52uK6Yg Here is another brand. Like BG7TBL it has a power meter feature that can be useful. https://www.ebay.com/itm/251635985921?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=QrfgZ5FaT7u&sssrc=4429486&ssuid=&var=&widget_ver=artemis&media=COPY BG7TBL has OCXO vs TCXO; BGTBL also has 10 MHz Ref in/out - pairs great with a GPSDO. (BG7TBL also makes GPSDOs; BG7TBL also makes distribution amplifiers in case you want to sync all your 10 MHz reference-able gear). |
| 3apw:
>What is replacing the good old frequency counters these days? Depends on your requirements for frequency counter. If you need to know the stability of the reference frequency sources and PLL then the measurement of the Allan deviation parameter will be mandatory. It can be as an internal application in frequency counter and an external application on a dedicated PC. I am happy with Pendulum CNT-91 with options. Recomended. |
| nctnico:
--- Quote from: alm on August 08, 2023, 03:36:50 pm ---Maybe for people involved in precision timing / frequency that need more accuracy than the time base of a scope can provide? Or other niche applications. But they probably buy counters for several kilobucks from the big names like Keysight. I'd mention R&S but I don't think they sell counters anymore. --- End quote --- And don't forget Tektronix FCA3000 / FCA3100 (rebadged Pendulum frequency counters) which are very nice counters. If you are into precission frequency / timing, you'll need a decent counter. IMHO better for real world use compared to what Keysight is offering. --- Quote from: pdenisowski on August 08, 2023, 02:49:20 pm ---Yes, exactly this. I can't remember the last time a customer asked me for a dedicated frequency counter. --- End quote --- Or perhaps people -like me- checked R&S' website when looking for a frequency counter and went next door quietly when nothing of interest showed on the website. There certainly is a market for high performance frequency counters. Especially models which can get to single digit or even sub-picosecond level time intervals. Time distribution systems are getting increasingly more accurate and I'm looking at the noise of time interval counters instead of the signal regulary. |
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