Is there a way to allow measurements (S11 and S21) under 375Mhz ?
It seems that nobody reported a working hack.
The only item missing is the Power Meter, and I would like to know if I can activate it
I'm happy to dump the entire flash here, as soon as my CF arrives.
I wonder what they used to figure out the patching locations, IDA Pro?
All the offsets to apply the patches that are described here have different data. =(
$ bgrep "4b 25 85 e2 15 28 82 e2 f6 2d 82 e2" elgato
elgato: 00123c4c
^^^^^^^^
So this should be the offset for the GPS patch.
No, I don't have the two boards and the 2 connectors. I wonder if the boards can be replicated? Not sure about the connectors, maybe eBay them.
Still waiting for my CF to arrive, <2GB cards are not very common anymore and are overpriced.
But if you know a trick to just dump the entire "hard drive" via FTP, so I don't do it one by one, please let me know.
The GPS fix seems to work (at least it didn't crash or hang the device). But I'm not sure how to test it. If I go to and try to do the time base adjustment, it won't allow me (I press start and it doesn't do anything), maybe I need to have a GPS fix before activating?
BTW, regarding custom waveforms... I posted this: https://www.eevblog.com/forum/testgear/agilent-e7495-linux-root-account/msg1054142/#msg1054142 and https://www.eevblog.com/forum/testgear/agilent-e7495-linux-root-account/msg1054570/?topicseen#msg1054570 for making custom waveforms to replace the existing ones. I'd suspect that the option 290 uses the same arbitrary waveform format (16-bit I/Q), but allows the file to be specified rather than having to replace built-in files (curious what the size limitations are though). As I mentioned in one of those posts though... the arbitrary waveform generator doesn't suppress the LO or image, so its usefulness is somewhat limited.
DogP
Are you sure you are desperate enough? It may be well cheaper and easier just to buy a standalone power meter.
I used the measurement board from my E7495 to populate a second channel in a E4418 power meter.
The board from E7495 has it's own power reference while the E4418 doesn't have the power reference on the measurement board.
That's the only difference I see.
The remaining hw stuff you might be missing:
1. Power reference connector.
2. Sensor connector.
3. Power meter interface board.
4. Sensor cable.
5. The sensor itself.
6. Ribbon cables.
Plus you need to connect all the stuff and enable the option correctly.
If you still want to go this route, I can afford you some parts I have leftover.
Do you have a GPS antenna connector (as pictured in the datasheet)? If not, you might be missing a receiver module.
No, the fix is not required. You should be able to set GPS as a frequency reference. When it's locked (needs an external antenna), you should see a green circle and time/date synchronized with the GPS.
I've extracted and comapred strings from E7495 and L4600A versions of the elgato.
The following looks like new options appeared on the L4600A:
FM Analyzer & Signal Generator
Low Frequency Extension for Source
PCMCIA IQ Modulation for Signal Generator
GPS Receiver
FM Audio Output Connector
Whoever, on the bottom left of the main screen I see "GPS Unlocked", and on the bottom right of the main creen is a green dot with "Int Ref" label. So even without fixing any sats, it is capable to grab the clocks? Interesting.
Whoever, on the bottom left of the main screen I see "GPS Unlocked", and on the bottom right of the main creen is a green dot with "Int Ref" label. So even without fixing any sats, it is capable to grab the clocks? Interesting.Int Ref means the internal TXCO. Unfortunately I can't provide you with screenshots this time.
Anyway, you need to get the GPS receiver locked first. Take a look into the "Displaying Location Information Using GPS" section of the "E7495A/B Measurement Guide".
The seller gave me the option to exchange it for a real "E7495B", I will probably do so (after I dump the drive).
I got GPS fix! Unfortunately, it won't let me do the time base adjustment, I press the button and it will not allow me to continue, it doesn't say anything. I restored the elgato, but resulted in the same issue. The seller gave me the option to exchange it for a real "E7495B", I will probably do so (after I dump the drive).