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E5071C powering down
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Hi,
bought a E5071C 4-port 8.5GHz VNA. Seller stated that the device does not power up. Arriving home I connected it to power switched it on - it turns on, Fans blowing for 3-4 seconds, no other signs of life, everything switching off. Noticed that if i remove the CMOS battery from the Mainboard (a Radisys Endura LS855 with Agilent patched BIOS), the Analyzer is starting up. It boots Windows XP just fine and the VNA is working. (Luckily the RF ports all seem to work). When shutting down it won't shut down entirely, black screen, and the Fans are still blowing. With the next power cycle i have the problem stated above again, until i remove the CMOS battery again. That even happens without booting Windows XP. So it seems like the BIOS is loading some invalid values into the CMOS RAM. The service guide from Keysight says it should be sent in to replace the CMOS battery, but that's very expensive for a hobbyist. Does anyone know how to get the proper CMOS data restored? I see there's a bioscheck.exe binary in the E5071C folder, but executing that doesn't change anything. Thanks Sven |
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Hi Sven,
you have to place a new CR2032 on the mainboard, then do a CMOS default and set the correct date/time. Normally, after that all should be OK. I had the same issue on mine, fixed it that way. regards, Jean-Luc ----- Mail original ----- De: "Sven Schnelle" <svens@...> ?: [email protected] Envoyé: Mercredi 19 Mars 2025 17:34:35 Objet: [HP-Agilent-Keysight-equipment] E5071C powering down Hi, bought a E5071C 4-port 8.5GHz VNA. Seller stated that the device does not power up. Arriving home I connected it to power switched it on - it turns on, Fans blowing for 3-4 seconds, no other signs of life, everything switching off. Noticed that if i remove the CMOS battery from the Mainboard (a Radisys Endura LS855 with Agilent patched BIOS), the Analyzer is starting up. It boots Windows XP just fine and the VNA is working. (Luckily the RF ports all seem to work). When shutting down it won't shut down entirely, black screen, and the Fans are still blowing. With the next power cycle i have the problem stated above again, until i remove the CMOS battery again. That even happens without booting Windows XP. So it seems like the BIOS is loading some invalid values into the CMOS RAM. The service guide from Keysight says it should be sent in to replace the CMOS battery, but that's very expensive for a hobbyist. Does anyone know how to get the proper CMOS data restored? I see there's a bioscheck.exe binary in the E5071C folder, but executing that doesn't change anything. Thanks Sven |
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"Jean-Luc F1ULQ via groups.io" <f1ulq@...> writes:
Hi Sven,Thanks, good to know that this must work - i was afraid of some bug or unknown procedure. In the beginning this didn't work for me with the symptoms I described. I left the unit without battery for a night and than it worked the way you described and i was happy. But Windows XP crashed later during the day, and after that it didn't work again. Also had some problems that USB didn't work. I now bought an old used mainboard with the same form factor and PCI slots, an Asus P8B75. Hope i can implant this, not sure how compatible the Agilent Software is with other boards. Would also be a nice upgrade as this one has an i5-3330. Maybe i'll even try Windows 7. 73 DM1SV |
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"Sven Schnelle" <svens@...> writes:
"Jean-Luc F1ULQ via groups.io" <f1ulq@...> writes:I now have the Asus P8B75 in place. There are a few remarks:Hi Sven,Thanks, good to know that this must work - i was afraid of some bug or - The Asus has 2 instead of 3 PCI slots. I decided to remove the USB client side Controller, luckily the E5071C software doesn't complain if it isn't present. Another option would have been to replace the PCI 82350 GPIB controller with a PCIe version so one would need only 2 PCI slots and one PCIe slot. - No LVDS port on the ASUS mainboard. As the origin screen had a resistive touchscreen with really bad picture quality compared to todays TFT and touchscreen wasn't working properly, i bought this one as a replacement: This requires a cable fromt the outside HDMI port to the HDMI LVDS converter, and getting 12V from the power supply. The touchscreen is connected via USB, and doesn't need any special drivers. Mechanically the display is a perfect fit - only the mounting screw locations are a bit different, but that can easily be adapted. - Instead of Windows XP, i put Windows 7 on it. The E5071C software communicates via Windrvr 6 to the Agilent PCI card, i used windrvr6.sys from the Xilinx USB cable drivers because this one is signed while the Agilent XP driver isn't signed. So i now have the E5071C software from Windows XP running on Windows 7. If someone has a E5071C with factory Windows 7 or 10, i would be interested getting a copy of the E5071C software. I wasn't able to install the E5071C Windows 7/10 software from keysight, the installer always hangs when trying to install the LXI web service. The only remaining issue is that i get some 'VBA can't be started' error message during selftest. Have to figure out which package is missing. But i guess i'll never use VBA, so even if this doesn't work it's not a big deal. |
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