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Agilent E7495 linux root account

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kirill_ka:

--- Quote from: DogP on October 26, 2016, 06:40:44 am ---BTW, I did some more testing on waveform files, and it appears that the largest file it'll fully process is 2MB (corresponds to 200ms @ 2.5Msps, or 2s @ 250Ksps).  I haven't gotten it to actually play any longer than the original file length though.

--- End quote ---
Length seems to be hardcoded in DSP program genIS95.
AFAIK debug log show what is passed to DSP. It's modulation type (4, 5, 6, 7 - separate value for each Arb file). And then the ARB file is written to DSP memory.

To get debug output:
1. Save settings (save state button) to <set>
2. Set debug parameter in registy/<set>/sourceStim.ini
3. connect to that DMC shell
4. activate <set>
5. play with generator
Debug output will appear in DMC shell.

kirill_ka:
I just noticed a weird thing. If I change sig gen amplitude in spectrum analyser mode, signal level jumps up about 25dB. This only happens if spectrum analyser runs in full span (500kHz-2.7GHz). Amplitude control still works, but signal level is higher than normal (i.e. at -50dBm setting, actual level is -23dBm). It recovers after suspend-resume cycle.

technogeeky:
I just picked up one of these for a bargain (partially broken / incomplete). The only known problem is a intermittent busted LCD screen. Since I don't necessarily plan to use it in a portable mode, I may not replace the LCD right away especially if I can get all of this PC-based GUI stuff working. The other problem I anticipate is that it seems like I am just getting the unit -- no accessories whatsoever. Maybe when the seller ships the backpack to me, it might have some items in it.

So, I have a slew of questions:

For reference, the unit I supposedly will have in a few days is:

Agilent E7495A Options:

* 200

* 205

* 210

* 220

* 510

* 600

* 700

My current questions:


* What are the minimum set of accessories I will need to test the unit, and test the self-calibration? It seems like I need rather specific cable lengths, specific Agilent-branded 10dB pads, etc. Can I get away with cheaper parts?
* Does anyone know the full list of power sensors that will work with this device? It seems like there are only one or two.
* When I entered the model and serial number on Keysight's site, the list of options did not match the advertised list, nor did it match the list on the metallic sticker shown in the auction. Does anyone know if this is normal? Is it possible that this unit was upgraded after initial selling? I know the sticker on the device says Agilent last calibrated it in 2013.
* Does anyone know what kind of power supplies one can get away with? One of the manuals lists a range of voltages. I have a whole slew of power bricks, but I don't think I have a 24V 4A one. I don't have any batteries to charge, so presumably I don't need that much current anyway.
* I doubt I have any PCMCIA flash cards. Do I need to buy a specific size? Like really, do I need exactly a 64MB one?
* The service manual mentions an optional, internal 90dB attenuator. But I can't find any reference to this anywhere else. Do any of your units have this? Do all units have it? Does nobody have it?
I will no doubt have further questions, but for now I don't even have the device in hand.

Thanks in advance!

DogP:
I'll try to take a crack at your Qs...


--- Quote from: technogeeky on February 27, 2017, 04:07:50 am ---1. What are the minimum set of accessories I will need to test the unit, and test the self-calibration? It seems like I need rather specific cable lengths, specific Agilent-branded 10dB pads, etc. Can I get away with cheaper parts?
--- End quote ---
I don't think there's anything special about the ones supplied.  I'm personally using standard cables and attenuators, and a homemade short, open, and load.


--- Quote from: technogeeky on February 27, 2017, 04:07:50 am ---2. Does anyone know the full list of power sensors that will work with this device? It seems like there are only one or two.
--- End quote ---
The manual specifies that it works with the 8481A, 8481D, and 8482A (and CFT variants).


--- Quote from: technogeeky on February 27, 2017, 04:07:50 am ---3. When I entered the model and serial number on Keysight's site, the list of options did not match the advertised list, nor did it match the list on the metallic sticker shown in the auction. Does anyone know if this is normal? Is it possible that this unit was upgraded after initial selling? I know the sticker on the device says Agilent last calibrated it in 2013.
--- End quote ---
Got a link where you entered the info?  I can try mine and see if it's different as well... though I personally wouldn't worry what Agilent thinks you've got.  If you go into setup and read out your options, that's what you've got.  And if you hack the file described earlier in the thread, you can have all the software options. :-P


--- Quote from: technogeeky on February 27, 2017, 04:07:50 am ---4. Does anyone know what kind of power supplies one can get away with? One of the manuals lists a range of voltages. I have a whole slew of power bricks, but I don't think I have a 24V 4A one. I don't have any batteries to charge, so presumably I don't need that much current anyway.
--- End quote ---
The manual states +9V to +25V DC (55W).  I've personally run mine from a 24V 5A supply (cheap Chinese power pack) as well as a universal 90W 19.5V laptop power supply.


--- Quote from: technogeeky on February 27, 2017, 04:07:50 am ---5. I doubt I have any PCMCIA flash cards. Do I need to buy a specific size? Like really, do I need exactly a 64MB one?
--- End quote ---
I'm not aware of any limitations... I'm using an 8GB card in mine.


--- Quote from: technogeeky on February 27, 2017, 04:07:50 am ---6.The service manual mentions an optional, internal 90dB attenuator. But I can't find any reference to this anywhere else. Do any of your units have this? Do all units have it? Does nobody have it?
--- End quote ---
If mine has it, I'm not aware of it.

Pat

technogeeky:
Well, I forgot an important question. I just got my unit today, so before I do something stupid...


* Is the power supply center-pin positive? Yes*.

* I looked through this thread more carefully; it's 9-24V DC, somewhere between 3 and 5 amps; center-pin positive.

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