arjen@personalrecharge.com wrote...> >On 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: >> Am 23.02.2018 um 20:15 schrieb Phil Hobbs: >> >>> So my new-to-me HP 89441A analyzer is due to be here Tuesday. >>> I noticed that it doesn't have the serial cable--is it a >>> regular straight-through 9-pin cable, or something weird? >> >> I also had to make the cable myself. >> It wasn't much work, and it is known how to do it. > > Hi Gerhard, i have also bought one of these units, 89441A, > no serial cable and for the love of peet, i cannot find the > cable connection diagram, and standard RS232 didn't work > either, could you help out and show me how to do it please?Another question of interest, what's the next, more modern version of this instrument, one could look for on eBay? -- Thanks, - Win
FFT analyzer recommendations
Started by ●February 16, 2018
Reply by ●June 23, 20192019-06-23
Reply by ●June 23, 20192019-06-23
On Sunday, 23 June 2019 12:30:58 UTC+2, ar...@personalrecharge.com wrote:> On Saturday, 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: > > Am 23.02.2018 um 20:15 schrieb Phil Hobbs: > > > > > So my new-to-me HP 89441A analyzer is due to be here Tuesday. I noticed > > > that it doesn't have the serial cable--is it a regular straight-through > > > 9-pin cable, or something weird? > > > > I also had to make the cable myself. > > It wasn't much work, and it is known how to do it. > > Hi Gerhard, i have also bought one of these units, 89441A, no serial cable and for the love of peet, i cannot find the cable connection diagram, and standard RS232 didnt work either, could you help out and show me how to do it please? > > Thanks! > > Arjen.I made my own cable and it works. It's just a 1:1 connection with DB-9 on both sides, without any crossing of the TX and RX lines. I can double-check tomorrow but I'm almost sure there's nothing else. Cheers, Nikolai
Reply by ●June 23, 20192019-06-23
On 6/23/19 6:30 AM, arjen@personalrecharge.com wrote:> On Saturday, 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: >> Am 23.02.2018 um 20:15 schrieb Phil Hobbs: >> >>> So my new-to-me HP 89441A analyzer is due to be here Tuesday. I noticed >>> that it doesn't have the serial cable--is it a regular straight-through >>> 9-pin cable, or something weird? >> >> I also had to make the cable myself. >> It wasn't much work, and it is known how to do it. > > Hi Gerhard, i have also bought one of these units, 89441A, no serial cable and for the love of peet, i cannot find the cable connection diagram, and standard RS232 didnt work either, could you help out and show me how to do it please? > > Thanks! > > Arjen. >It's a straight-through D-25 cable. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by ●June 23, 20192019-06-23
On 6/23/19 7:14 AM, Winfield Hill wrote:> arjen@personalrecharge.com wrote... >> >> On 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: >>> Am 23.02.2018 um 20:15 schrieb Phil Hobbs: >>> >>>> So my new-to-me HP 89441A analyzer is due to be here Tuesday. >>>> I noticed that it doesn't have the serial cable--is it a >>>> regular straight-through 9-pin cable, or something weird? >>> >>> I also had to make the cable myself. >>> It wasn't much work, and it is known how to do it. >> >> Hi Gerhard, i have also bought one of these units, 89441A, >> no serial cable and for the love of peet, i cannot find the >> cable connection diagram, and standard RS232 didn't work >> either, could you help out and show me how to do it please? > > Another question of interest, what's the next, more modern > version of this instrument, one could look for on eBay? > >I think the 89441A was the last one with a baseband input. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by ●June 23, 20192019-06-23
Phil Hobbs wrote...> > Winfield Hill wrote: >> >> Another question of interest, what's the next, more modern >> version of this instrument, one could look for on eBay? > > I think the 89441A was the last one with a baseband input.What's its floppy drive? A weird HP LIF format? Can you get the "Standard data format utilities"? -- Thanks, - Win
Reply by ●June 23, 20192019-06-23
>What's its floppy drive? A weird HP LIF format?No, it's a DOS DS/DD 1.44 MB unit. You can make decent-looking TIFF plots easily, but (unlike e.g. my TDS 784As) you can't get the measurement data in a plain text file. Cheers Phil Hobbs
Reply by ●June 23, 20192019-06-23
On Sunday, 23 June 2019 20:00:19 UTC+7, Castorp wrote:> On Sunday, 23 June 2019 12:30:58 UTC+2, ar...@personalrecharge.com wrote: > > On Saturday, 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: > > > Am 23.02.2018 um 20:15 schrieb Phil Hobbs: > > > > > > > So my new-to-me HP 89441A analyzer is due to be here Tuesday. I noticed > > > > that it doesn't have the serial cable--is it a regular straight-through > > > > 9-pin cable, or something weird? > > > > > > I also had to make the cable myself. > > > It wasn't much work, and it is known how to do it. > > > > Hi Gerhard, i have also bought one of these units, 89441A, no serial cable and for the love of peet, i cannot find the cable connection diagram, and standard RS232 didnt work either, could you help out and show me how to do it please? > > > > Thanks! > > > > Arjen. > > I made my own cable and it works. It's just a 1:1 connection with DB-9 on both sides, without any crossing of the TX and RX lines. I can double-check tomorrow but I'm almost sure there's nothing else. > > Cheers, > NikolaiHi Nikolai, thanks for your reply! i have tried to wire it true straight, but that did not work, i just connected pin 1 to pin 1, pin 2 to pin 2, ETC. i stopped getting the error at start-up when i omitted pins 1-6-9, but then when i want to measure something requiring the RF section, it gives a communication error. having said that, it seems that the shielding requirements and cable quality requirements could be high, im using two rather Chinese DB9's and un shielded cable any advice is most welcome! Thanks so far, Arjen.
Reply by ●June 24, 20192019-06-24
Am 23.06.19 um 12:30 schrieb arjen@personalrecharge.com:> On Saturday, 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: >> Am 23.02.2018 um 20:15 schrieb Phil Hobbs: >> >>> So my new-to-me HP 89441A analyzer is due to be here Tuesday. I noticed >>> that it doesn't have the serial cable--is it a regular straight-through >>> 9-pin cable, or something weird? >> >> I also had to make the cable myself. >> It wasn't much work, and it is known how to do it. > > Hi Gerhard, i have also bought one of these units, 89441A, no serial cable and for the love of peet, i cannot find the cable connection diagram, and standard RS232 didnt work either, could you help out and show me how to do it please? > > Thanks! > > Arjen. >I'm currently in southern France, so i cannot check anything. :-) I use it over LAN only. If the 441A has the network option, you just open port 50?? on 192.168.178.111 or whatever and then you can read and write GPIB commands/data from/to it. The network is old style Ethernet on BNC, so you need a converter box. I had to terminate both ends of the RG58 cable, even if the cable was only 10 cm long. I have written a program that runs on Linux, maybe others. It controls the 441A and does sweeps over seven decades & creates gnuplot output with dB / log-f axes. That involves at least 7 different sweeps and it sorts the data together. This is open source. cheers, Gerhard
Reply by ●June 24, 20192019-06-24
On Tuesday, 25 June 2019 05:17:50 UTC+7, Gerhard Hoffmann wrote:> Am 23.06.19 um 12:30 schrieb arjen@personalrecharge.com: > > On Saturday, 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: > >> Am 23.02.2018 um 20:15 schrieb Phil Hobbs: > >> > >>> So my new-to-me HP 89441A analyzer is due to be here Tuesday. I noticed > >>> that it doesn't have the serial cable--is it a regular straight-through > >>> 9-pin cable, or something weird? > >> > >> I also had to make the cable myself. > >> It wasn't much work, and it is known how to do it. > > > > Hi Gerhard, i have also bought one of these units, 89441A, no serial cable and for the love of peet, i cannot find the cable connection diagram, and standard RS232 didnt work either, could you help out and show me how to do it please? > > > > Thanks! > > > > Arjen. > > > > I'm currently in southern France, so i cannot check anything. :-) > > I use it over LAN only. If the 441A has the network option, > you just open port 50?? on 192.168.178.111 or whatever and then > you can read and write GPIB commands/data from/to it. The network is > old style Ethernet on BNC, so you need a converter box. I had > to terminate both ends of the RG58 cable, even if the cable was only > 10 cm long. > > I have written a program that runs on Linux, maybe others. > It controls the 441A and does sweeps over seven decades & > creates gnuplot output with dB / log-f axes. That involves > at least 7 different sweeps and it sorts the data together. > > This is open source. > > cheers, GerhardSounds cool Gerhard! just to make things clear, the serial cable i need to make is for the serial 2 port that connects the RF unit to the main unit. if anyone can let me know how that is wired, then i'd be very happy. i can then use the device up to 2.8GHZ. i was really lucky with this buy, the machine i bought is literally brand new.... not a spec of dust inside, no yellowing, perfect.... :-) i will learn allot with this setup!
Reply by ●June 25, 20192019-06-25
On Tuesday, 25 June 2019 04:43:35 UTC+2, ar...@personalrecharge.com wrote:> On Tuesday, 25 June 2019 05:17:50 UTC+7, Gerhard Hoffmann wrote: > > Am 23.06.19 um 12:30 schrieb arjen@personalrecharge.com: > > > On Saturday, 24 February 2018 03:21:07 UTC+7, Gerhard Hoffmann wrote: > > >> Am 23.02.2018 um 20:15 schrieb Phil Hobbs: > > >> > > >>> So my new-to-me HP 89441A analyzer is due to be here Tuesday. I noticed > > >>> that it doesn't have the serial cable--is it a regular straight-through > > >>> 9-pin cable, or something weird? > > >> > > >> I also had to make the cable myself. > > >> It wasn't much work, and it is known how to do it. > > > > > > Hi Gerhard, i have also bought one of these units, 89441A, no serial cable and for the love of peet, i cannot find the cable connection diagram, and standard RS232 didnt work either, could you help out and show me how to do it please? > > > > > > Thanks! > > > > > > Arjen. > > > > > > > I'm currently in southern France, so i cannot check anything. :-) > > > > I use it over LAN only. If the 441A has the network option, > > you just open port 50?? on 192.168.178.111 or whatever and then > > you can read and write GPIB commands/data from/to it. The network is > > old style Ethernet on BNC, so you need a converter box. I had > > to terminate both ends of the RG58 cable, even if the cable was only > > 10 cm long. > > > > I have written a program that runs on Linux, maybe others. > > It controls the 441A and does sweeps over seven decades & > > creates gnuplot output with dB / log-f axes. That involves > > at least 7 different sweeps and it sorts the data together. > > > > This is open source. > > > > cheers, Gerhard > > Sounds cool Gerhard! just to make things clear, the serial cable i need to make is for the serial 2 port that connects the RF unit to the main unit. if anyone can let me know how that is wired, then i'd be very happy. i can then use the device up to 2.8GHZ. i was really lucky with this buy, the machine i bought is literally brand new.... not a spec of dust inside, no yellowing, perfect.... :-) i will learn allot with this setup!Sorry about the delay, I was suffering from jet lag yesterday (-: I assumed we were talking about the same thing - the interconnection between the RF and the baseband units. Here's what I'm using: https://photos.app.goo.gl/FdixNHhrkBmujr656 The cable itself is short, about 1 m. It's just unshielded ribbon cable. On one side it's crimped, on the other one it's soldered. Nothing special at all, and it works. Cheers, Nikolai
