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HP 8594E new issue 4
Ok I replaced the battery this am and all went great, yes I did copy the info as the manual states. my new issue is the display as you will see in this video. I thought maybe I missed a connection when I re-assembled so I took all apart and checked and nothing was disconnected or wrong. https://youtu.be/QGJ8quU_MiM?si=6P0sZImvJVhGCgMF The Voltages look good according to the Power Supply indicator lights. D1 - D16 all lite when powered on and go off with the exception on D13 as I believe this is normal? Any suggestions would be appreciated.
Started by KB2LMN @ · Most recent @
HP8920B Blowing Fuse 6
Friends, My beloved HP8920B RF Communications Test Set started blowing the 5A AC fuse today. It blows as soon as you push the power switch. I am wondering if there is a common problem I could look for. Tomorrow I may try to see if it will run on 12VDC. It has a connector and switch for DC operation. Any advice appreciated. Thanks! Jeff
Started by Jeff Acree @ · Most recent @
HP 8594E battery power 3
Anyplace to attach an outside power supply so data doesn’t need to be re-entered when replacing battery? Andrew
Started by KB2LMN @ · Most recent @
HP8935 displaying AA Memory Battey Low Message
Friends, My HP8935 is displaying the AA Memory Battey Low message, but the batteries are not low. I am wondering if anyone else has experienced this. Thanks! Jeff KC8VFN
Started by Jeff Acree @
HP 8505A OP Manual and Digital Radio Measurements
Sold the VNA, however, have the local ops manual, very handy with full view foldout. Also, Digital Radio Measurements text. PM me direct, make offer, shipped media mail. Thanks, Alan
Started by alan victor @
Manuals for an HP3456B DMM? 12
Does anybody know where I can find manuals for an HP3456B DMM? The HP site has a manual for the 3456A, how different is the 3456B from the 3456A? Thanks, BobH
Started by BobH @ · Most recent @
RF Alignment Failure in Agilent CXA signal analyzer N9000A 2
I have Agilent CXA Signal Analyzer N9000A, I'm getting these errors, please help. I referred manual and it suggested to check 50Mhz with -24dB, But when I check in my equipment its showing 50Mhz with -60dB. While I trace it out it was across H270(HMC270MS8G) where I was getting 50Mhz with -60dB but near FPGA it is exact 50Mhz with -24dB, so does it represent there is problem with H270 or any other if yes please help me, And any blue print of this will help a-lot.
Started by ipother6@... @ · Most recent @
E5052A Power On Test (3.3V Bus Supply) 27
I wonder if anyone here has experience or access to an Agilent E5052A signal source analyser? Mine is about 20 years old and is recently showing signs of unreliability. The main symptom is an occasional power on self test fail and it then reports issues with a 3V3 power supply voltage on the A3 DSP/ADC board where it reads low at typically 2.96V. I think a pass requires >2.96V but this may be firmware dependent. My E5052A is running the latest firmware V2.51. I think this 3V3 supply is common across the backplane but it gets reported as an A3 test in the service menu. The 5V PSU rail also reads low at between 4.7 and 4.8V but this is still a pass (shows true for the test result) Also, for several years now it has shown a stubborn internal spurious at 60 kHz at a very low level. This very slightly spoils any phase noise measurements even though it shows up at about -140dBc then the trace is in phase noise mode in dBc/Hz. I'm not sure what causes this internal 60 kHz term, it may be from a PSU or the display or a divided clock. It may be that the 60kHz spurious term is a feature of this analyser as it is present on all my plots dating back over 13 years. It's not caused by anything nearby to the instrument as it does it regardless of position or proximity to other equipment. Plus the other E5052A I've used in the past (in a different location) is exactly the same. The 60kHz spurious is also present when I swap across to the baseband input even with a very clean LF signal fed to the 0-40 MHz baseband input. So this spurious must be getting in at the ADC if it affects the baseband input as well. I've seen similar on another E5052A that also shows a lowish 3V3 voltage (but it never shows a power on test failure) and it also has the permanent 60 kHz spurious on all phase noise tests on the main RF input. The service menu password is only three characters long and is 'kid' If anyone has access to a healthy E5052A could they enter the service menu and do a manual Power On Test (POT) in the service menus? Then report the 5V and 3.3V results for the A3 module Mine shows anything from 2.91V to 3.05V and I think the pass/fail threshold for the POT is somewhere around 2.96V. The other E5052A I have some access to shows 2.982V to 3.08V and never reports a POT failure. Thanks in advance for any replies Jeremy
Started by jmr @ · Most recent @
Success: Repair HP3455A Multimeter 2
Hi all, I checked U16 the latch connected to the driver U5 with a scooe. The output pin 15 ( connected to pin 9 of U5) was not stable and so I replaced U16. Now the 3455 is working again. At least no FET, only U6 and U16 replaced. Ralf
Started by Ralf Rosche @ · Most recent @
hp-410b, early manual 2
In the course of refurbishing an old -410b, I was a bit confused in that my unit does not correspond to a manual stored here in our Files section. So, I purchased a manual online and discovered that it matches the unit that I own, so I have scanned it and loaded into our files section today. Cheers. -- Ron Lawson
Started by Ron na2o @ · Most recent @
LCR Meter E4980A Power On Test Fail 3
Hi, I am currently trying to repair an E4980A LCR Meter that is experiencing a power-on failure. When the unit is powered on, the self-test displays the following error message: "E1000: Power On Test Failed: 100000,0,0,0,0,0,0." All keys are locked and the device appears to be hung. However, when I enter service mode by pressing the Preset + Power On button, I am able to access all the keys and perform manual operations. I also conducted a manual self-test, and all tests passed without any issues. Unfortunately, there is very little information available online about this specific issue. The data log I’ve attached shows a CPU[2] error (16), which could be a clue. If anyone has any insights or has encountered a similar problem, I would greatly appreciate any advice or suggestions regarding the power-on test failure. Thank you in advance for your help! Sysinfo log: ID: Agilent Technologies,E4980A,MY46312198,A.04.00 OPT: 200,710,710 POWER CYCLE: 482 POWER ON HOURS: 18165 SYSCAL REV: 1.00 SYSCAL DATE: 2014/12/10 R: Rev.1.01,,, CPU[1]: 0 CPU[2]: 16 SYST[1]: 0 SYST[2]: 0 SYST[3]: 0 SYST[4]: 0 SYST[5]: 0 DATA[1]: 0 DATA[2]: 0 DATA[3]: 0 DATA[4]: 0 OPT[1]: 0 OPT[2]: 0 OPT[3]: 0 OPT[4]: 0 OPT[5]: 0 OPT[6]: 0 OPT[7]: 0 A1[1]: -1.189578915E+01 A1[2]: +1.163335800E+01 A1[3]: +5.106445313E+00 A1[4]: +3.349609375E+00 A1[5]: +2.490234375E+00 A1[6]: +5.102705002E+00 A2[1]: +6.593852455E-05 A2[2]: -4.669545332E-01 A2[3]: +4.929539280E-01 A2[4]: +4.640171965E-01 A2[5]: -4.558677030E-01 A2[6]: +5.084224205E-01 A3[1]: +5.968145488E-04 A3[2]: -8.684453465E-01 A3[3]: +8.727315869E-01 A3[4]: -7.707347339E-01 A3[5]: +5.249549693E-01 USER[1]: 0 USER[2]: 0 USER[3]: 0 USER[4]: 0 BATT[1]: +3.056640387E+00 +4.300000000E+01 +5.217538194E-01 +5.389070530E-01 KC
Started by KC Chong @ · Most recent @
Request HDD image for Agilent Infiniium DCA 86100C mainframe 9
Hi guys! Can anyone share the disk image for the 86100C? This mainframe runs on Windows XP. I have a disk image for the 86100A based on Windows 98 and I'm ready to share if anyone needs it. Alex.
Started by Alex T @ · Most recent @
HP83712B EPROM content 3
Hi, does anyone happen to have the data of EPROMs U7 and U24 of the HP83712B? I seem to have lost data... Tom
Started by tom_iphi @ · Most recent @
HP 85047A test set on 8753A analyzer -- switch control board jumpers to retrofit for opt 009 (mechanical switch) 3
Working on a 85047A test set which needs to be retrofitted with mechanical switch 33311B, as it has dead solid state switch and will be used with 8573A analyzer (pre-dates the 85047A). Goal is to end up with an 85047A opt 009. This issue has to do with interaction of the switch control board (back panel) and the analzyer's port A(1) and B(2) switching controls. The 8753A analyzer is working normally with an 85046A opt 009 (mechanical switch) which was retrofitted from solid state at some point in the past. The 8753A is on firmware 1.01. The analyzer has never been tried with an 85047A since I've had it. The switch control board (along back panel) has three jumpers defined - J3, W1 and W2. J3 is not discussed in the manual but is installed from factory. I've installed 0.025" square (typical wire-wrap style) pins on the back side of the board for J3, W1 and W2 so that they can be reconfigured without pulling the board from the chassis. As built (with solid state switch) J3 - present (not mentioned in manual) W1 - absent W2 - absent Behavior - port B selected <1 second during power-up, never again. As documented (with mechanical switch) J3 - present (not mentioned in manual) W1 - absent W2 - present Behavior - port B selected <1 second during power-up, never again. Other experiments J3 - present (not mentioned in manual) W1 - present W2 - absent Behavior - port B selected ~3 seconds during power-up, never again. J3 - present (not mentioned in manual) W1 - present W2 - present Behavior - port B selected ~3 seconds during power-up, never again. So, at this point I cannot get the analyzer to switch to port B (right hand port) when initiating a 1-port S22 calibration. Any suggestions at this point?
Started by David Feldman @ · Most recent @
Tricks and thoughts about the 3457A battery 18
I did it ! I replaced the memory battery in my 3457A. My used 3457A was built in the late '80s and still had its original lithium battery, with a 1989 date code on it. This battery obviously needed replacement. Unfortunately, the battery is soldered to the processor PC board and provides permanent Vcc for a low-power CMOS SRAM chip which holds the multimeter's calibration constants. In other words, interrupting the SRAM supply would result in the loss of calibration data. Thus, the battery must be replaced while the 3457A is powered up. This is a bit of a nail-biting experience, but it can be done. One useful trick I used is to prepare a cardboard shield which covers the CPU board and protects it from any solder drops and shorts, while allowing access to the battery. And of course the soldering iron must be floating. Replacement batteries in the original size (lithium BR 2/3AA with solder pins) are still available for a few dollars, but I chose to install a slightly different battery, a Tadiran SL750 which has a 1/2 AA size, for which sockets are available. Using a socket means that in 10 years, the next battery replacement will be easier : with the multimeter powered up, just pop out the old battery and insert a new one. Another advantage is that 1/2 AA lithium batteries are very easy to find, there's a good chance that your local supermarket has them. Now I'd like to share some thoughts and questions about this battery. As we all know, lithium batteries have a long, but finite life. Even though the current drain on the battery is less than 0.2 uA at room temperature, at some point in time the battery will die. I read the 3457A user and service manuals, but I couldn't find a single mention of the battery. Nothing about battery life, no instructions on how to replace it, even nothing that says "contact your nearest HP sales office". To me, this doesn't make sense, especially when considering that this multimeter was introduced in 1986, at the time of the "old HP" which produced high-quality instruments, not expendable stuff. I could only think of a few possibilities : - Maybe the engineers at that time believed that lithium batteries could last forever ; - Or they thought the multimeter would be scrapped when the battery runs out, or before it does ; - Or they decided that if a multimeter loses its calibration data because of a dead battery, it should be returned to HP for battery or processor board replacement followed by re-calibration. That's an expensive proposition. None of these options make any sense to me in the context of the "old HP". Further thoughts and comments will be most welcome ! Joel
Started by Joel Setton @ · Most recent @
HP 53310A modulation domain analyzer memory upgrade 4
Hi Folks, On the hunt for a source for the RAM chips to expand the memory in my 53310A The usual Googling around has yet to yield 4 pieces from a single source. Do any of you have 4 that you would be willing to part with..? Candidates are: Cypress CY7C194-25PC, Hitachi HM6708P-25, Motorola MCM6208P25, or equivalent. Located Louisville, KY 40206 USA
Started by Dave Wright @ · Most recent @
HP3325A Trouble, Calibration FAIL 2 & 3 4
Hi, I need some help for my HP 3325A, which worked many years perfect, but know has the common FAIL 2 & 3 Error. (PASS 1, FAIL 2 FAIL 3) It has still sin, square and triangle output, the amplitude is ok, the range is ok (1-10Vpp) into a 50 Ohm load. When swtichting from sin to square or triangle the a-cal error message comes up. The voltages are good, 5.05, -15.16, +15.16 volts, no ripple, or minor. I changes some caps in the psu some time ago. The integrator output looks good, the voltages are as expected on the testpoints LVL,OS1,OS2,AMPL,XDR. I interchanged already U20 & U24. I have a revision C board, the realays on the att board are the flat black ones. Alls tests were done grounding the ACD pin, 1khz and 10Vpp. I found something strange in the amp section. placing the jumper to detach the amp from AMP IN and measuring the DC bias voltage at F3 left and right it shows -12.73 volts. Should be +7.5 volts. When toggeling the jumper and playing with the amp settings, the voltage sudden comes to a normal value and I could adjust the bias with the pot to 7.5 volts. Should it be in any case 7.5 volts after power on and when AMP in pin is disconnected and with any amp setting? I checked already soldering and diodes, resistors, fuses and caps for shorts. And some transitors in the amp section. I have the service manual, there is a huge section testing with a signature analyzer, but I don't have one. So are there any hints, what to test / check next? Am I right in the amp section? Ralf
Started by Ralf Rosche @ · Most recent @
HP6209B component location layout 12
I recently acquired a HP6209B, and already have the same manual as the one here in the files section, but it does not include the component layout, as it seems that page was left out during the scan. If someone might have a HP6209B paper manual, could they please take a clear hi-res picture of the parts location page and email or post it to the files section? I think the 6207B is almost identical so a picture of that component layout might also be helpful, if it has better resolution as the one present on the 07B 1970 manual I already have that looks very dark, lo-res and low-contrast, so not very usable at all. The power supply seems to work just fine, other than on the 12mA scale the meter needle pegs all the way to the left beyond zero, even without a load connected. Guessing probably some resistor value has drifted, so a parts layout might be helpful to have. The 120mA scale seems to work fine after calibrating it (it was reading a bit low). And if I put a 10mA load while on the 120mA scale, and then switch to the 12mA scale it will read around 8mA, even after the calibration. About a second after disconnecting the load the needle will start to move left. Volt scales where reading 5V high, but after a meter zero and calibration they are now reading reasonably ok for an analog meter. One other issue is that the current 10T pot seems a bit stiffer to turn than expected, but is still fully functional. On the other hand the volts 10T 100K pot was replaced with a 50K unit, and the tech even left a note about this inside the power supply taped on top of the main transformer, dated November 1981. The volts adjustment turns with normal feel, and also seems to work fine with this half value pot. Thanks in advance.
Started by Alex @ · Most recent @
odd HP83651A error 5
Hi folks, my 8510C system recently developped an unlock error, so I have checked the source HP83651A first. It turns out, that the source output below 2,4GHz is exactly (to the Hz) 100MHz too low, while above 2,4GHz it is spot on. Also, the 8510C works fine above 2,4GHz. Has ever anybody seen such a strange problem? Any ideas what could cause this? Tom
Started by tom_iphi @ · Most recent @
Error 7301 on HP70820a
Dear friends, I ask you if possible to help me solve my problem: I have SA HP70000 and a HP70820a that worked perfectly. At a certain point without having used it improperly an error occurred (7301 ch 1 up bus, wr addr: bit). I ask you if anyone has info or has had the same problem. I ask for your help in trying to solve it. Thanks Gianni
Started by Xsherman @
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