Which signal generator???

[fatboy135]

Hi, I´m looking to purchase a signal generator, I have three on my mind and I need some opinions about them, and maybe some alternatives...
ok here I go
- Promax gf232
- Meterman fg2ce: http://www.amidata.es/cgi-bin/bv/browse/Module.jsp?BV_SessionID=@@@@0697668617.1144309126@@@@&BV_EngineID=ccccaddhgmflljecefeceefdffhdgmn.0&cacheID=esie&3321761941=3321761941&stockNo=4207722&prmstocknum=4207722&prodoid=4716960
- Isotech gfg8216: http://www.amidata.es/cgi-bin/bv/browse/Module.jsp?BV_SessionID=@@@@0697668617.1144309126@@@@&BV_EngineID=ccccaddhgmflljecefeceefdffhdgmn.0&cacheID=esie&3321761941=3321761941&stockNo=3760200&prmstocknum=3760200&prodoid=2331456
Thanks for all :wink:

 

[Guest]

Note - you cannot link to a RS web page
That is because they use Broadvision as a front end and that uses a user defined session
Your session belongs to you, will have expired by now - and we can;t see it

You are better putting the stock numbers in (or using Farnell)

UK03878 (Having once worked as a consultant at RS - not on the broadvision side)

 

[fatboy135]

I downloaded the datasheet from the isotech 8216 and the wavetek/meterman fg3c and I´m so surprised because they are completely the same. The same specifications, the same hardware, they are instead the same machine with another branded name, the isotech costs about 300$ and the meterman 600$. Do anyone knows the reason???
Here are the links with the datasheet and images to compare them. I´m so atonished

http://www.tequipment.net/WavetekFG3C.html

http://www.blii.com/instek_gfg-8216_3_mhz._function_generator.htm

 

[fatboy135]

I´m getting more and more atonished, the same machine is branded in some countries like Instek and another countries Isotech. What is the really truth behind electronics manufacturers????

 

[SonsOfThunder]

Lots of the sig gens are the same with different labels. Cheap ones use an ICL8038 chip, which is okay if you just need a signal, but if you want to take measurements, THD never drops below 1%, generally.

I believe the FG3C is not based on the ICL8038, please correct me if I am wrong. That would explain the higher price.

HTH!
Charlie

 

[fatboy135]

I don´t know which ic arquitecture mounting the fg3c but I was speaking with instek and they say that instek manufacture some equipments for another brands. In spite of I also ask them for isotech signal generators that are exactly the same as instek and they didn´t hear anytime about this another brand.
I´m a bit confused, so I´m looking for hameg modulars.
My hameg oscilloscopes is really amazing, once a time I was trying to isolate a circuit from the 220v of my home, it occurs an awful derivation that drives the 220 v into the hameg. The fuses on my home just break down, when I recover all the system I was really sad thinking about my hameg could be death, after switch on the hameg was totally good, I get my hameg into the calibration and test shop and they said to me that the hameg was terrrible rough, it was perfectly and it is more posible that I broke my fridge on my derivation than the hameg
Since 4 years ago I´m using hameg equipment I only could say that this fucking german equipment is rude and rough as lorenzo lamas in renegate :wink:
So I think that I will spend much money and get a hameg signal generator