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Re: HP 8648A Error code 517
Hi Cslim, You wouldn't believe what I FOUND. I thought I would check for the obvious. What I found was 2 of the modules were interchanged. They are the RF OUT and the SIG GEN SYNTH. I purchased
By Jeff Miller <jmelect@...> · #49063 ·
Re: Failing 3585A Spectrum Analyzer
Hi Gordon, This is almost certainly related to the way the LO is structured. Generally speaking, the LO has to make some changes as the span increases. In your case, for spans that are 500 kHz and
By pianovt · #49062 ·
Re: 8563E +28V shutdown/oscillates
Found clip in an old agilent forum posting. Seems that I'm not getting +34V to the LM317T when under load. Diodes check out, so I guess its either bad cap(s) or too much load. Any idea what the load
By Colin Haig · #49061 ·
Re: HP 8648A Error code 517
Hi Jeff, May have to wait till March 2013. That is the date when Agilent does not service the HP8648 signal generator anymore. Some boards may appear somewhere. You can buy a service manual with
By cslim388 · #49060 ·
designspark
Hi, Sorry for the wide search but I want to find someone to help get me started with Designspark. a free pcb design package. I have not been able to find a connection to their support. Right now I
By jerry massengale · #49059 ·
Re: Failing 3585A Spectrum Analyzer
Vladan, Here are the results of my testing :( 1. The test points on A71-A74 all are well within tolerance and show no ripple. There is some pulse noise in the 20KHz range, but I would guess that
By Gordon & Lois Duff · #49058 ·
8563E +28V shutdown/oscillates
Got an 8563E that the +28V supply shutsdown on. Looking for CLIP for A6 power supply. Anybody got one? I think the supply is 8563-60064 so clip 8563-90100. +28V supply oscillates slowly - its shutting
By Colin Haig · #49057 ·
Re: HP 105A
I'll second that! Invaluable group- It has been proved to me over and over, that HP owners and servicemen (and women) are some of the finest people I have met. Mark, send me an email if you want
By Chris · #49056 ·
Re: HP 105A
You have discovered two important truths. 1) This is indeed a valuable forum. 2) The best way to fix something is to figure it out yourself. All the best, Bob
By Bob Albert <bob91343@...> · #49055 ·
Re: HP 105A
I found the problem and it wasn't in the oven after all! The oven is functioning perfectly. I pondered what to do to measure the current draw as per Don's suggestion to see if the oven thermostat was
By Mark Gulbrandsen <cinerama84106@...> · #49054 ·
Re: HP 105A
Before starting to pull the oven apart perhaps it would be worth while to a) measure the oven temperature and b) measure the two heater currents to see which (or both) are operating. Since it seems
By Jaanette Black · #49053 ·
Re: HP 105A
Thanks for the info Bill... I am not sure I have the ability to delve that far into the thing. It's been running now for 2 days and hasn't changed frequency at all but the meter still pegs. Do you
By cinerama84106 <cinerama84106@...> · #49052 ·
Re: HP 105A
Fred, I was considering a similar option except I already have a number of Efratom GPS references here. I did acquire a hard to get HP E1938 10 mhz torodial oscillator board from a China seller that
By cinerama84106 <cinerama84106@...> · #49051 ·
Re: HP 1660 logic analyzer disk imaging.
Yes, I picked that CF adapter for its physical properties, not its electrical properties. Certainly not the least expensive CF adapter choice. Made mounting easier in some other applications where I
By Glen Slick · #49050 ·
Re: HP 1660 logic analyzer disk imaging.
I ordered one of those flash cards and will give it a try. I thought that SanDisk were the refferance devices for flash. I believe that the adapters are all the same electrically so that should not
By cnc_joker <preilley_454@...> · #49049 ·
Re: HP 105A
The manual states the positions of the meter. If I recal my also not to good memory it should read 80 in all positions if all is fine. I have removed the batterypack ( it is behind a ups) and mounted
By PA4TIM · #49048 ·
Re: HP 1660 logic analyzer disk imaging.
What I just successfullly tried in my 1660C are the following: ACS-CF-IDEToCFA adapter, example: http://www.ebay.com/itm/330854229936 InnoDisk iCF 4000 2GB Industrial CF card, example (of an iCF
By Glen Slick · #49047 ·
Re: Failing 3585A Spectrum Analyzer
Gordon, Another possibility is that W2 which connects A70 Power Supply to A76 Power Distribution isn't making a good ground connection between the two. (Fig. 10-38, Vol. 2) Vladan
By pianovt · #49046 ·
Re: HP 105A
I have several of these, and I've rebuilt a few, too. Going by my (usually faulty) memory, what you're actually measuring is the heater current. Mine pegs the meter for a while until the oven gets up
By Bill E · #49045 ·
Re: Failing 3585A Spectrum Analyzer
Hi Gordon, If I were troubleshooting this problem, I would proceed as follows: 1. Open the top cover and check the power supplies for ripple. I would do this first, because it's the easiest
By pianovt · #49044 ·