A HP 4192A LF impedance analyser, been after one of these for a while.
Pretty much Gods own automatic impedance bridge for work in the audio to lowish RF region IMHO (5Hz - 13MHz, by which point the VNA is starting to look like a reasonable weapon).
There are more modern instruments (For proper Agilent money!), but for work a long way from 50 ohms (Where the VNA rules), these are pretty nice, especially if you hook up the GPIB so you can produce pretty plots in software.
Downside is that these things are not exactly compact, and weigh a ton, but they are proper no messing instruments.
Now just hope the thing powers up when it gets here....
Regards, Dan.
A Hylkko 858D hot air rework station (by zshanding.cn). The only one I could afford
. I'll inspect the innards and connections before using, but I expect it'll serve me just fine.
A HP 4192A LF impedance analyser, been after one of these for a while.
Wow, that is one chunky beast.... And I thought my 8903B Audio Analyzer was a bit chubby...
Yea, but all the old HP kit was that way, the modern version is a lot more $ then I paid for it, and apart from integrating a LCD and plotting it does essentially nothing new.
Way I see it, this thing is not any more butch then my network analyser (of similar vintage).
GPIB and some python should make the thing useful for plotting caps and inductors a long way from 50 ohms (For which the VNA is a better weapon once you reach RF frequencies, but this thing goes down to 5Hz).
Regards, Dan.
Was that 4192A an eBay find? Any worries about out-of-cal? Or will you run through service manual routines after you get it?
I will probably dig out a few traceable passives and use them to do a check that the thing is reasonably close, if it is, then fine, if not well I have a service manual, and old HP is generally really serviceable, failing everything else it goes back on EBay as a 'parts only' job where I got it from.
This is not intended for metrology, but as a working tool for winding RF inductors and such (And maybe doing G-B plots of sonar transducers), so if it is within a few percent, that is good enough.
Short, open and measure something known in the range that I am interested in, not calibration, but reasonable verification, far more important most of the time.
First job, as always, is dig any RIFA class X or Y caps out of there.....
A Peak DCA75 semiconductor tester, mainly for its curve tracing functions. I'm pleased to say that Peak's generosity continues.
Another power strip so I can power more pieces of test equipment.
Another power strip so I can power more pieces of test equipment.
I have one of those saved for later at Amazon, but it's silver. Even on ebay all are silver. Did you actually find it in black somewhere?
Another power strip so I can power more pieces of test equipment.
I have one of those saved for later at Amazon, but it's silver. Even on ebay all are silver. Did you actually find it in black somewhere?
They have black ones at Harbor Freight. Good deal with their ubiquitous 20% off coupon.
Geez, I tried looking at Amazon with no luck, but their search is kind of useless at times. Or maybe they really didn't have black when I looked, it was months ago. Harbor Freight only had house brand, which looks like that flimsy folded metal construction. Too bad cause there's a store 20 miles away. I'm torn now because I found this at Newark a few weeks back. Not as many outlets, but check the price and it's extruded aluminum.
http://www.newark.com/stellar-labs-power/28-21485/twelve-outlet-metal-power-strip/dp/95Y2826Haven't ordered yet, still building enough of an order to be worthwhile.
Harbor Freight only had house brand, which looks like that flimsy folded metal construction.
I’ve got a couple of them in my lab. It’s true they aren’t super heavy duty construction but I wouldn’t call it flimsy. They do have a beefy cord and are ETL certified. I find they’re more than adequate for mounting to a wall or bench and plugging TE into - and at $20 -the price is right.
Looking at the newark one, it seems I got screwed. While I picked the Amazon one because of its high density (16 plugs -> 2ft long) as I will only be plugging cords into it, it's really not worth 40 bucks.
I’ve got a couple of them in my lab. It’s true they aren’t super heavy duty construction but I wouldn’t call it flimsy. They do have a beefy cord and are ETL certified. I find they’re more than adequate for mounting to a wall or bench and plugging TE into - and at $20 -the price is right.
Yes, you're right. I only said flimsy because I had one similar get severely bent by UPS. If you can walk in a store and buy one that would be no problem, and they're plenty sturdy enough to hang on a wall and plug stuff into.
Fufufu. I just bought a Brocade icx-6610 to upgrade my main systems to 10Gb/s.
HP 58503A
Symmetricom 58535A & 58529A
A new parcel arrived this morning, from Reichelt Elektronik in Germany. There are some 4mm banana test leads and sockets, and the heaviest item in this parcel is a product catalogue, 1800 pages, in German.
I got a catalog from Newark a while back. It's about the same size as that one from Reichelt. Mouser used to send out catalogs regularly, but I haven't gotten one in years. Maybe they don't print them anymore. I'm kind of surprised anyone goes to the trouble these days.
and the heaviest item in this parcel is a product catalogue, 1800 pages, in German.
A good opportunity for you to brush up your German
Keysight U1620A 2 channel 200 MHz handheld scope. I bought it as having a broken channel 2 but it works perfect. Added a pair of Tektronix THP0301 300 MHz probes.
With both channels is works nicely to 240 MHz before any aliasing, with a single channel its 3 dB point is 360 MHz - not bad at all.
Would be nice to have more history on this guy. The earlier handheld Agilent scopes were made in Korea by Escort I do believe. This scope is made in Malaysia and runs WinCE 5.0. It has the typical stainless steel torx screws and the boards internally are Agilent branded. It also uses the same lithium battery packs as the Keysight FieldFox line of handheld RF analyzers. The GUI is very responsive but the software feels like it could be further optimized.
I don't have the proper power adapter which is 15 VDC @ 4amp. It uses what I am calling a 2.5mm "safety" barrel plug - does anyone know where to source one, I have plenty of power adapters and would be happy to just change the end.
Attached are a few pics looking at a 1 MHz 1 Vpp signal from an AWG, don't try probing like this at home kids!
They sent me one last year after a Hirose GT connector order (oem Nissan connectors) - most will send out catalogues but you may have to pay the shipping for it