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#125 Reply
Posted by
Bicurico
on 23 Mar, 2018 18:34
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Just downloaded.
Can't wait to try it.
Thanks for the work Vitor.
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#127 Reply
Posted by
CJay
on 23 Mar, 2018 21:00
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It does and I've downloaded copy but have yet to find time to hook everything up.
Looks very impressive though
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#128 Reply
Posted by
Bicurico
on 23 Mar, 2018 21:09
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Some info:
This is still the first version and there are some bugs, obviously. Also, I want to increase the functionality. Unfortunately I have had zero time for my hobbies in the past weeks.
In order to get the software working, the following is needed:
- CMU200 or CRTU with firmware v5.20 if serial connection is to be used - not tested with older firmware releases, but it seems that only v5.xx offers 115200 baud
- Keysight Connection Expert 2018: some users reported that it doesn't run with older versions. I don't know, because I only tried this version.
- Recommened: Agilent GPIB/USB interface (I ordered a "refurbished" one from China through eBay and it cost me around 80 Euro plus 60 Euro for customs).
- You need to setup remote connection on the CMU200/CRTU: test it with Keysight Connection Expert 2018. If it works here, it should work with my software.
- To run my software, you need a (free) activation code.
Regards,
Vitor
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#129 Reply
Posted by
ps
on 23 Mar, 2018 22:02
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- Is it possible to set a ref -> pk to a negative peak
- Can I change the power measure form dbm to watt
Check the list of GPIB commands. There are a couple of funtions and settings that are not accesible with the front panel controls. If it isn't there, it is not possible.
- Is it possible to make a print screen save it a usb stick
No. MS-DOS does not support any USB at all. There is a USB to PS/2 keyboard emulation in the BIOS, therefore an USB keyboard will work, but that is the only device type supported.
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#130 Reply
Posted by
CJay
on 23 Mar, 2018 22:22
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I have the Keysight 2017 software suite on a PCI based PC with a PCI GPIB card, I'm hopeful it will work with that.
CMU Base is 5.21
I'll dig out the PC and cables one evening next week and request a code, thank you for all your hard work.
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#131 Reply
Posted by
cmu2017
on 24 Mar, 2018 10:38
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Thanks all for your answers.
@Vitor
Looks great :-)
But do I need also OPSW v5.x installed? You have this mention on your blog. But not here on your post
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#132 Reply
Posted by
Bicurico
on 24 Mar, 2018 10:42
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OPSW v5.x is the DOS Software that runs on the CMU200 and CRTU.
I noticed that v3.x has only baud rates up o 19200, which is much too slow.
With v5.x you get 115200 baud, which is slow, but works.
Using the GPIB/USB interface you get 1.5MBit/s and thus you get a pretty fast refresh rate on the PC.
Regards,
Vitor
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#133 Reply
Posted by
stan33
on 26 Jun, 2018 15:12
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Hi,
I have just bought one CMU200 that I will use using SCPI commands through the serial port only.
I have some troubles to use is as as simple spectrum analyzer. Is there a simple SCPI command sequence to:
- set the display in max hold
- make a peak search and measure peak level/frequency ?
I am interested in doing this without getting arrays (if possible).
Thanks is someone can help.
Stan
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Stan,
you have to look for R&S doc for the CMU200
https://www.rohde-schwarz.com/de/suche_63238.html?term=cmu200The remore seq. is looking like that one below:
set remote command mod. via menu ant then
send via RS232
1;INITiate:SPECtrum
...
sorry but for the middle part I have no example.
...
send to go back local mode
1;*GTL
Markus
PS.: There is a free software to control the cmu, you have to ask google.
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#135 Reply
Posted by
stan33
on 27 Jun, 2018 10:47
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Hi Markus,
thanks for your help. I can set a lot of things using scpi, unfortunately I did not found any scpi commands for:
- setting the display in max hold
- make a peak search and return peak level/frequency
I can do this using the UI but not using scpi commands.
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#136 Reply
Posted by
zitt
on 27 Jun, 2018 22:18
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I picked up one of these boat anchors off of TheBay about 3wks ago. I just replaced the Fujitsu Rotational HD with a PATA SSD because... well; I'm paranoid that 15year rotational drive is suspect at best.
That said; I made a backup of the hard drive "in case"... and it appears to be running base3.22 of the application under DOS 6.22.
I tried almost successfully to "upgrade" the system to FreeDOS 1.2... but there was some kind of batchfile strangeness with the version manager that the software wouldn't start so I gave up.
I'm thinking about upgrading the the latest and greatest application/firmware. I've seen some have posted here and there is at least one utube video of someone doing it. Has anyone done it recently? Any advice to give to help quell the FUD I have?
If the update fails; can I just re-image the HD with my old copy and be up and running? or does the upgrade process really program eeproms?
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#137 Reply
Posted by
ZL1CVD
on 27 Jun, 2018 22:52
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Yes firmware upgrades EEPROMS aplenty& the firmware upgrade / downgrade process has no problems going back or forward revisions. If yours has an AMD CPU, older motherboard & older modules v5.1 is probably the latest you will be able to run. Trying 5.21 wont kill it but you may find some features disappear - from memory, an old one I worked on lost Audio. Make sure you use version manager to install new firmware and do not just copy & move folders which I was initially doing. Version manager does some sort of voodoo to make everything work.
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#138 Reply
Posted by
zitt
on 27 Jun, 2018 23:36
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My device:
AMD K6-III
CPU (FMR) FMR5
Memory 192 MB
BSW/FSW V3.22
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#139 Reply
Posted by
_Wim_
on 03 Jul, 2018 17:51
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I can do this using the UI but not using scpi commands.
That will probably be the way to go...
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#140 Reply
Posted by
Kribok
on 25 Sep, 2018 19:17
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Hello to everyone and sorry for poor English.
Encouraged by the possibilities and low price of the CMU 200, I bought it for around 900 $ with a view to using it in radioamateur measurements (spectrum analyzer + RF generator). After one week of use, the RF generator stopped working. I was looking for information about the fault, but I found nothing interesting. At the time when I want to turn on the FR generator, the device hangs and the buttons do not work, I need to turn off the CMU 200 to work again. If anyone has any interesting proposals for repair then I will be grateful. I will take photos and a more detailed description of this fault soon.
I greet everyone
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#141 Reply
Posted by
ZL1CVD
on 25 Sep, 2018 22:31
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Check the two 50 way cables W223 & W224 are firmly in place - these connect motherboard A200 to motherboard 2 A201. Quite common for W224 to come loose. Also check 34 way cable from front end module A20 to motherboard A200. Also look at the software version number when it starts up. If it says 5.21! and not 5.21, then there was a problem with the DOS software installation and you should reinstall. Choosing "firmware update after board change" in VERM can sometimes also clear the problem. Finally, a faulty digital unit A7 has been known to cause this issue. Re-seating the board may work also pulling it apart, removing the sub modules and giving it a good clean also works. 73s om de chris zl1cvd.
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#142 Reply
Posted by
Kribok
on 28 Sep, 2018 18:51
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Thank you very much for the hints and interest in my problem.
I unscrewed the CMU 200 to check the connections and took out the RX / TX module, just like my colleague had previously said about cleaning, the whole module was heavily soiled, I took out all the modules in turn and cleaned, including the control module and the fan duct.
I took pictures, and I'm working on putting them in this forum - I'm sorry I'm a novice.
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#143 Reply
Posted by
TheDefpom
on 28 Sep, 2018 20:39
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I thought I might was well post these here for reference, it might be helpful to someone.
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#144 Reply
Posted by
Kribok
on 30 Sep, 2018 13:28
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If someone buys such a device second-hand, it is worth to unscrew and clean them, just like your friends suggest.
I attach a few photos of the condition of the device.
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#145 Reply
Posted by
Ice-Tea
on 30 Sep, 2018 19:51
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That's terrible. Never seen anything like it.
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#146 Reply
Posted by
Kribok
on 01 Oct, 2018 06:18
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Unfortunately, it looked like it is now clean.
Thanks to the suggestions of my friend ZL1CVD, whom I thank, my CMU 200 is like new, I cleaned all modules and connection pins.
Earlier, a message about too high temperature appeared a few times, now the CMU 200 is on for a few hours, and it's great.
Unfortunately, after turning on the RF generator, the device keeps crashing.
I searched for information on the internet and found something like this -
https://www.mikrocontroller.net/attachment/338050/CMU_BASE.INI.TXTI do not know about programming, but maybe someone will be interested.
On the Rodhe & Schwarz website I found this -
https://www.rohde-schwarz.com/pl/software/cmu200/My software is SW V4.35!
If it is a software error like ZL1CVD wrote, then where can you get newer software, because on the company website Rodhe & Schwarz is probably older than I have in my CMU200, but I can be wrong.
I'll do some more photos.
I greet you all.
I have been subscribing to DheDefpom's friend channel for several years, and have watched the videos several times.
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#147 Reply
Posted by
Ice-Tea
on 01 Oct, 2018 06:38
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I have a complete copy of a CMU drive here somewhere, probably with more recent SW if you want.
You can also go in the service menu during boot, indicate you changed boards and the SW will rebuild. May be enough to save your day
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#148 Reply
Posted by
Qw3rtzuiop
on 01 Oct, 2018 08:26
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You can find the latest software here:
http://gotroot.ca/cmu200/Extract the files to a memory card and insert it in your device. Press "Menu Select" at startup to get into the boot menu.
Then you can update all the software packages.
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#149 Reply
Posted by
usagi
on 01 Oct, 2018 19:05
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That's terrible. Never seen anything like it.
looks exactly like some cisco routers we got off ebay a long time ago. they were used in a porn shop where everyone heavily smoked cigars. the insides were furry just like the pictures in this thread.