Coherent 212 Power Meter

**Laser Ben** · 01-12-2009, 19:36

Anyone got a manual for a Coherent 212 Power meter? I just got a new one for cheap with a detector and attenuator on ebay.

**hologeek** · 01-12-2009, 20:26

I do. Its a great manual complete with schematics. Your not going to find the weird batteries it uses, but it will work great using 4 9V batteries to supply the +18/-18 to supply the op amp.

I've had many of these meters, in fact have 2 left over. Did your come with the 1000:1 attenuator?

**Laser Ben** · 01-12-2009, 20:54

PM Sent! .

**300EVIL** · 01-13-2009, 16:22

HA! That's funny. I just picked up one of these off of ebay as well.

I just received it today and noticed it also has batteries.

I was expecting a power cord. Good to hear you can use four 9V batteries however, I think the reason they used the 8.4V mercury batteries is because of the stability. I am wondering if alkaline 9V's would cause inaccuracies with the meter if implemented.... I hope.

I would also love to get a copy of the manual if it's not too much trouble.

Thanks!
Adam

**anode** · 09-26-2010, 08:59

Originally Posted by hologeek

I do. Its a great manual complete with schematics. Your not going to find the weird batteries it uses, but it will work great using 4 9V batteries to supply the +18/-18 to supply the op amp.

I've had many of these meters, in fact have 2 left over. Did your come with the 1000:1 attenuator?

Hi I just got one on ebay also. would you send me the manual and any helpful hint?
Thanks

**mixedgas** · 09-26-2010, 09:43

Originally Posted by anode

Hi I just got one on ebay also. would you send me the manual and any helpful hint?
Thanks

I placed it on the ildaswap FTP server a year ago.

Steve

**mccarrot** · 09-26-2010, 10:51

Originally Posted by Laser Ben

Anyone got a manual for a Coherent 212 Power meter? I just got a new one for cheap with a detector and attenuator on ebay.

manual is also on ebay:

http://cgi.ebay.com/COHERENT-212-Pow...item41400456cf

**anode** · 09-26-2010, 17:51

Thanks for the info. I also have seen the Ebay listing. I made it to FTP root at ftp.photonlexicon.com then FTP directory /ILDASWAP%20Mirror/ at ftp.photonlexicon.com
But I am having trouble finding the file from there. I will buy the ebay file if I have too or pay you for your file.
Thanks again Steve.
Pete.

**Roy G. Biv** · 09-27-2010, 08:38

Anode, you´ve got a PM.

**mixedgas** · 09-29-2010, 16:18

file should be cohr212.zip

not worth buying, 4 pages of drivel and one simple schematic.

Steve

Thread: Coherent 212 Power Meter

Thread Tools

Coherent 212 Power Meter

COHERENT 212 info request

Posting Permissions