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Futurlec has 2N2218 in stock. The ubiquitous 2N2219 is the same part, just higher hfe. HP knew about the 2N2219 so maybe they had trouble with instability. You could probably select for low hfe.

I'm trying to recucitate an HP8753C. I replaced the YTO which was bad and was able to do the 'Source Pretune Correction Constants' adjustments procedure. This is done with the A9 jumper in the 'ALTER'

Dave, THANK YOU!!!! It worked!!!!!!! Best, Francesco K5URG Sent: Saturday, February 12, 2022 1:01 AM To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] Help

Just want to start out by saying I have no background in EE but I am a ham who has restored an older tube radio (SB-101) as well as two Tektronix 24XX scopes (recapping both was the ultimate fix for

I was correct. ?There is no standalone battery in this scope. ?They are simply referring to the battery in the NVRAM module. ?This must have been a condition of the Navy contract to put that

The command is "BPEK". It takes two arguments: address and length (in decimal if I remember correctly), and returns raw bytes prepended with a short ascii header. There's a limit to the length that

Do you have the list of gpib to dump? the FW? ? i can try this

Rich, There is nothing wrong with just reading the contents of the EEPROM. Then store the original safely and program another one for a test. I’ve done that a couple of time for spectrum analyers.

Leon: That is good information. In a little while, I am going to test my S400 Jumper to make sure when I toggle #8 on the dip switch, I am getting continuity. The idea of having to pull the EEPROM and

Hi Rich, I've done an option upgrade 14 days ago on my 8753D (with the CPU 000 board, which is probably also in your VNA). I've got the same error, because I did not flip the jumper (there is no A9

Funny you should raise this as I was just yesterday trying to get my E4401 with the same option to less than 1KHz to try and have a look at the spectral purity of a 8640B.?It would not go below 1KHz

Hi Contact me off group. Hardy Fra: [email protected] [mailto:[email protected]] P? vegne af Francesco Ledda via groups.io Sendt: 12. februar 2022 02:01

Have you checked this? https://edadocs.software.keysight.com/kkbopen/how-do-i-upgrade-my-esa-e-series-spectrum-analyzer-589310374.html Maybe you need to update the firmware or something? You could try

Hi Andrew: Yes, I am not sure what is going on. I was told this usually is a pretty straight forward process. The analyzer is not failing any of the self test. I think tomorrow I am going to measure

you may be able to cross it over to a PN2218A.?? Some 2N numbers in a T0 style can cross over to an epoxy package by replacing the 2N with a PN. Harvey

My down converter is something i use a lot with my 8640B sig gen when I? need a signal below 450 KHZ.? Unfortunately a clumsy accident killed the output.? The failure was traced to Q1 and Q2 on the

If the serial numbers match, and you still get the fail message, I wonder if that indicates there's actually a hardware problem with your analyser and it can't complete the self-cal properly. These

I have an E4402B that shows options 1DR installed, but it doesn't seem to work as no BW smaller than 1 kHz can be selected. See picture. What can I do to address this issue? Thank you and Best,

Hi Andrew: This is the procedure I used: https://www.keysight.com/us/en/assets/9018-40043/installation-guides/9018-40043.pdf It looks to be identical to what you and anther poster has given me within

From the service manual on page 3-5 A9 Switch Positions 1. Remove the power line cord from the analyzer. 2. Set the analyzer on its side. 3. Remove the two lower-rear comer bumpers from the bottom of