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Date
Re: HP8640B part 08640-60043
Hi Renaud, That¡¯s the RF output board. The PA hybrid plugs into it at the top. Cheers Tom Sent from an iThing; please forgive the typos and brevity
By Tom Lee · #144882 ·
HP8640B part 08640-60043
Hi, I just bought this spare part for my 8640B: 08640-67043 also E-1716-4 I didn't need it but it was quite cheap so I took it. I only found one reference for it in HP 8640 ARMY_parts 40 pg(1).pdf
By Renaud F5ZR · #144881 ·
Re: HP 3852a extended memory modules info
All good feedback from everyone. thank you.
By Maciej Kawalkowski · #144880 ·
Re: Looking for internal photos of 04284-65007 'Interface Box'
We just use the std 4x BNC to test lead adapter. No need for special fixtures at the DC and test freq. Jon
By Froggie the Gremlin · #144879 ·
Re: Looking for internal photos of 04284-65007 'Interface Box'
On Sat, Jun 15, 2024 at 10:33 PM, Dr. David Kirkby, Kirkby Microwave Ltd wrote: > > On Sat, 15 Jun 2024 at 08:20, Jared Cabot via groups.io ( http://groups.io > ) <jaredcabot= [email protected]
By Jared Cabot · #144878 ·
Re: Looking for internal photos of 04284-65007 'Interface Box'
[email protected]> wrote: I can't recall seeing that on the cal certificate of a 4284A which I had calibrated by Keysight. Not 100% sure. I managed to get a free option 006 (support for 4 m
By Dr. David Kirkby, Kirkby Microwave Ltd · #144877 ·
Re: HP 70004A with Video DRAM error
I recently encountered an ¡°A5 graphics DRAM error¡± on my 70004 display and while web searching came across this thread. Initially my inclination was to try replacing the 16 VDRAMs on the A5
By Gary Lauterbach, K6MG · #144876 ·
Re: Several problems with Agilent 54810
Re, Can you confirm if the din interface of the Atlas 757 PCi3 board (in the Agilent 54810A) is in XT or AT format. I made myself a ps2/ Din adapter, but no communication, except the reset of the 3
By Gerard · #144875 ·
Re: Looking for internal photos of 04284-65007 'Interface Box'
After taking a look at the 4284A Operation Manual, I derived the internal wiring layout for the 04284-65007 Interface Box. I uploaded a diagram as per the link below:
By Jared Cabot · #144874 ·
Re: Flea Market HP 410C
Great read, Gianni!
By jerry-KF6VB · #144873 ·
Several problems with Agilent 54810
Hello, I am asking you to move forward on several issues. First this oscilloscope did not start at all. I found the failure by dismounting the main acquisition board which had a capacitor on the
By Gerard · #144872 ·
Re: HP 8970B with 346B Noise source - Error 13
Apart from suspecting the 5dB pad in the 8970B... I will hint at a solution to this problem may be the supply voltages out of tolerance. Check all DC voltage levels on the various boards and modules.
By Ulf Kylenfall · #144871 ·
Re: HP 8970B with 346B Noise source - Error 13
It works on the 8970A and reports +4dB after calibration. It doesn't work on 8970B. Do you have a 8970A and 346B to check the uncorrected value reported?
By Razvan Popescu · #144870 ·
Re: HP 8970B with 346B Noise source - Error 13
Am 14.06.2024 um 10:59 schrieb DF6NA Rainer: SRI it's the 346A?? ! ! !
By DF6NA Rainer · #144869 ·
Re: HP 8970B with 346B Noise source - Error 13
E 13 =>? ENR must be 11dB minimum at 30MHz - the HP346b has 5dB ! ! ! Am 14.06.2024 um 10:49 schrieb Razvan Popescu via groups.io:
By DF6NA Rainer · #144868 ·
HP 8970B with 346B Noise source - Error 13
Hello, Since the thread about cheap noise source on the other list got very interesting and I was doing some repairs on my HP 8970A and 8970B I would like to ask some questions which I am not sure how
By Razvan Popescu · #144867 ·
Re: Looking for microwave frequency counter
Thanks to all that replied and helped me find a counter. I settled on an HP 5342A from a list member. Thanks Gary K4FMX
By Gary Schafer · #144866 ·
Re: Looking for 1GG7-4210 amplifier datasheet
No, not Avantek. The IC (just the chip) is supposedly still in production at Keysight, but I have no idea if it's still available in that package. I think it was designed in the 1980s. Vladan
By pianovt · #144865 ·
Re: Looking for 1GG7-4210 amplifier datasheet
Could this be an Avantek part after spinning out from HP?
By ed breya · #144864 ·
Re: Looking for 1GG7-4210 amplifier datasheet
Just a guess, in case you can't find the data sheet: Vd=7V Id is adjusted for 150mA max. or leave it at Idss if it's less than 150 mA. Vladan
By pianovt · #144863 ·