Re: [time-nuts] Serial-Ethernet
On Thu, Mar 17, 2016 at 10:00 AM, Tom Van Baak wrote: > this feature should be in every GPSDO, but I think it's unique to the > TBolt. > I was under the impression that SYNChronization:HOLDover:INITiate did this on the Fury. Of course I'm used to embarrassing misapprehensions. -- Paul ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Well, the 4-port serial to Ethernet converter has been running for 22 hours, collecting data from two GPSDO's and it hasn't missed a beat. Although I have had the Lucent unit running for several months, this is the first time I have hooked up to the RS-422 port and taken data from it. From the look of this graph, it seems to be performing quite well. https://dl.dropboxusercontent.com/u/19599147/Lucent%20Adev.png Joe Gray W5JG On Tue, Mar 15, 2016 at 7:05 PM, Joseph Gray wrote: > On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: >> >> And, if you have a couple of 422 devices, consider the economics of a 4-port >> unit like: >> >> http://www.ebay.com/itm/301881123530 > > As promised, I am reporting on the USR-N540, 4-serial-port to Ethernet > box that Tom linked to. I had originally found it for less, but after > ordering, the seller emailed back to tell me he had no more at that > price. In any event, after about three weeks from China, my unit > arrived today. I haven't had any long term experience with this thing, > so hopefully it will continue to work. > > It was very well packed in a small box with hard foam. Included are > the converter box, wall wart (switcher), 2-pin screw terminal power > adapter, serial cable, Ethernet cable and four DE-9 to 4-pin screw > terminal adapters (for RS-422, RS-485). No documentation and no > software. The box is made from steel and seems substantial. The power > input is labeled "DC: 9-24V". > > I downloaded manuals and software from here: > http://www.usriot.com/p/4-serial-port-to-ethernet-converter/ > > One annoying thing is that the box is setup with a static IP, instead > of DHCP. The default IP of 192.168.0.7 is printed on the bottom, as > well as in the manual. The MAC address is not printed on the bottom. > The manual also lists the default login credentials. > > I initially only configured Port 1 in the web interface, to test with > my HP Z3801A (RS-232, 19200, 7, odd, 1). I then installed the Virtual > Serial Port software. This seems to be a licensed version of the > Eltima software http://www.eltima.com/products/vspdxp/. Or, perhaps > the Eltimat software is licensed from USR IOT? > > In the software, you can click on the "Smart VCOM" button and all four > ports will be assigned for you, using the first available port numbers > on your PC. I wanted a sequential range of 10-13, so I configured each > port individually, using the "Add COM" button. The interface box uses > TCP/IP ports of 23, 26, 29 and 32 by default, but these can be changed > in the web interface. Interestingly, the MAC address can also be > changed. > > The web interface is very well laid out and logical, as is the Virtual > Serial Port software. I have been connected to the Z3801A for almost > half an hour and things seem to be working just fine. I'll update if I > encounter any problems later. I will have to try the RS-422 with my > Lucent GPSDO. > > All in all, I am pleased with this converter box. At $20 per port, it > seems like a good deal for a new item. I know that others are using > surplus terminal servers that they bought for less. > > Approximate dimensions: 8.5" (including mounting ears) x 4.75" x 1.2" > > Joe Gray > W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Yes, I should have realized that it wasn't comparing the GPSDO against anything. So, what is the point of this graph in Z38xx? On Wed, Mar 16, 2016 at 7:39 PM, Bob Camp wrote: > Hi > > Be *very* careful looking at plots based on translated DAC readings. You > don’t really have all you need to come up with proper numbers. A simple scale > error can make things look much better or much worse than they actually are. > > Bob > >> On Mar 16, 2016, at 7:54 PM, Joseph Gray wrote: >> >> Well, the 4-port serial to Ethernet converter has been running for 22 >> hours, collecting data from two GPSDO's and it hasn't missed a beat. >> >> Although I have had the Lucent unit running for several months, this >> is the first time I have hooked up to the RS-422 port and taken data >> from it. From the look of this graph, it seems to be performing quite >> well. >> >> https://dl.dropboxusercontent.com/u/19599147/Lucent%20Adev.png >> >> Joe Gray >> W5JG >> >> >> On Tue, Mar 15, 2016 at 7:05 PM, Joseph Gray wrote: >>> On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: And, if you have a couple of 422 devices, consider the economics of a 4-port unit like: http://www.ebay.com/itm/301881123530 >>> >>> As promised, I am reporting on the USR-N540, 4-serial-port to Ethernet >>> box that Tom linked to. I had originally found it for less, but after >>> ordering, the seller emailed back to tell me he had no more at that >>> price. In any event, after about three weeks from China, my unit >>> arrived today. I haven't had any long term experience with this thing, >>> so hopefully it will continue to work. >>> >>> It was very well packed in a small box with hard foam. Included are >>> the converter box, wall wart (switcher), 2-pin screw terminal power >>> adapter, serial cable, Ethernet cable and four DE-9 to 4-pin screw >>> terminal adapters (for RS-422, RS-485). No documentation and no >>> software. The box is made from steel and seems substantial. The power >>> input is labeled "DC: 9-24V". >>> >>> I downloaded manuals and software from here: >>> http://www.usriot.com/p/4-serial-port-to-ethernet-converter/ >>> >>> One annoying thing is that the box is setup with a static IP, instead >>> of DHCP. The default IP of 192.168.0.7 is printed on the bottom, as >>> well as in the manual. The MAC address is not printed on the bottom. >>> The manual also lists the default login credentials. >>> >>> I initially only configured Port 1 in the web interface, to test with >>> my HP Z3801A (RS-232, 19200, 7, odd, 1). I then installed the Virtual >>> Serial Port software. This seems to be a licensed version of the >>> Eltima software http://www.eltima.com/products/vspdxp/. Or, perhaps >>> the Eltimat software is licensed from USR IOT? >>> >>> In the software, you can click on the "Smart VCOM" button and all four >>> ports will be assigned for you, using the first available port numbers >>> on your PC. I wanted a sequential range of 10-13, so I configured each >>> port individually, using the "Add COM" button. The interface box uses >>> TCP/IP ports of 23, 26, 29 and 32 by default, but these can be changed >>> in the web interface. Interestingly, the MAC address can also be >>> changed. >>> >>> The web interface is very well laid out and logical, as is the Virtual >>> Serial Port software. I have been connected to the Z3801A for almost >>> half an hour and things seem to be working just fine. I'll update if I >>> encounter any problems later. I will have to try the RS-422 with my >>> Lucent GPSDO. >>> >>> All in all, I am pleased with this converter box. At $20 per port, it >>> seems like a good deal for a new item. I know that others are using >>> surplus terminal servers that they bought for less. >>> >>> Approximate dimensions: 8.5" (including mounting ears) x 4.75" x 1.2" >>> >>> Joe Gray >>> W5JG >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Hi Joe, The "TI" value reported through SCPI by a HP GPSDO is the current "time interval"; the phase error within the closed loop. So this is PLL data, not clock data. As such, double-difference ADEV statistics selected in that plot of yours are somewhere between misleading and invalid. The TI value should wiggle around by many ns to tens of ns. What's interesting are the peak-peak or RMS value. What you can do is plot the TI value as a time series, or summarize it by looking at RMS, or even RMS over time. There may even be specialized PLL statistics to apply in this case, or FFT. Sometimes TDEV or tau*ADEV(tau) is useful to expose periodic variations. But the clue is that your ADEV (MDEV, etc.) plots all just head straight down into the -13's and -14's. If you ran it longer it would continue going into the -15's and -16's and pretty soon it would look like you have the best frequency standard in the world! That's what happens when ADEV is used on (bounded) PLL data instead of (unbounded) clock data. If not wrong, at least it's misleading, especially to newcomers to T&F metrology. As to why it's included in Z38xx? Or Heather as well? There was a time when the authors of both those tools misunderstood what it means to measure a GPSDO. They confused actual measured performance of the 10 MHz BNC frequency output compared to an independent frequency standard with the self-measured internal phase locking performance of the PLL. This mistake rarely happens with Stable32 or Timelab. However there is one case, with LH and a TBolt, where its ADEV graph is valid. If you put the TBolt in the state where GPS is active but disciplining is disabled, then the TI values really do represent a valid measurement between an independent reference (GPS) and a clock (the now free-running OCXO). In this case the ADEV plots in LH are perfectly valid. IMHO, this feature should be in every GPSDO, but I think it's unique to the TBolt. /tvb - Original Message - From: "Joseph Gray" To: "Discussion of precise time and frequency measurement" Sent: Wednesday, March 16, 2016 8:00 PM Subject: Re: [time-nuts] Serial-Ethernet Yes, I should have realized that it wasn't comparing the GPSDO against anything. So, what is the point of this graph in Z38xx? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Hi Be *very* careful looking at plots based on translated DAC readings. You don’t really have all you need to come up with proper numbers. A simple scale error can make things look much better or much worse than they actually are. Bob > On Mar 16, 2016, at 7:54 PM, Joseph Gray wrote: > > Well, the 4-port serial to Ethernet converter has been running for 22 > hours, collecting data from two GPSDO's and it hasn't missed a beat. > > Although I have had the Lucent unit running for several months, this > is the first time I have hooked up to the RS-422 port and taken data > from it. From the look of this graph, it seems to be performing quite > well. > > https://dl.dropboxusercontent.com/u/19599147/Lucent%20Adev.png > > Joe Gray > W5JG > > > On Tue, Mar 15, 2016 at 7:05 PM, Joseph Gray wrote: >> On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: >>> >>> And, if you have a couple of 422 devices, consider the economics of a >>> 4-port unit like: >>> >>> http://www.ebay.com/itm/301881123530 >> >> As promised, I am reporting on the USR-N540, 4-serial-port to Ethernet >> box that Tom linked to. I had originally found it for less, but after >> ordering, the seller emailed back to tell me he had no more at that >> price. In any event, after about three weeks from China, my unit >> arrived today. I haven't had any long term experience with this thing, >> so hopefully it will continue to work. >> >> It was very well packed in a small box with hard foam. Included are >> the converter box, wall wart (switcher), 2-pin screw terminal power >> adapter, serial cable, Ethernet cable and four DE-9 to 4-pin screw >> terminal adapters (for RS-422, RS-485). No documentation and no >> software. The box is made from steel and seems substantial. The power >> input is labeled "DC: 9-24V". >> >> I downloaded manuals and software from here: >> http://www.usriot.com/p/4-serial-port-to-ethernet-converter/ >> >> One annoying thing is that the box is setup with a static IP, instead >> of DHCP. The default IP of 192.168.0.7 is printed on the bottom, as >> well as in the manual. The MAC address is not printed on the bottom. >> The manual also lists the default login credentials. >> >> I initially only configured Port 1 in the web interface, to test with >> my HP Z3801A (RS-232, 19200, 7, odd, 1). I then installed the Virtual >> Serial Port software. This seems to be a licensed version of the >> Eltima software http://www.eltima.com/products/vspdxp/. Or, perhaps >> the Eltimat software is licensed from USR IOT? >> >> In the software, you can click on the "Smart VCOM" button and all four >> ports will be assigned for you, using the first available port numbers >> on your PC. I wanted a sequential range of 10-13, so I configured each >> port individually, using the "Add COM" button. The interface box uses >> TCP/IP ports of 23, 26, 29 and 32 by default, but these can be changed >> in the web interface. Interestingly, the MAC address can also be >> changed. >> >> The web interface is very well laid out and logical, as is the Virtual >> Serial Port software. I have been connected to the Z3801A for almost >> half an hour and things seem to be working just fine. I'll update if I >> encounter any problems later. I will have to try the RS-422 with my >> Lucent GPSDO. >> >> All in all, I am pleased with this converter box. At $20 per port, it >> seems like a good deal for a new item. I know that others are using >> surplus terminal servers that they bought for less. >> >> Approximate dimensions: 8.5" (including mounting ears) x 4.75" x 1.2" >> >> Joe Gray >> W5JG > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Hi The graph is a nice way to see if there are any strange humps in the dac info when it is translated into frequency. We are used to looking at ADEV plots so it is not a bad way to present the data. If you have a unit that goes crazy every few hours, it will give you a bump on the plot. Bob > On Mar 16, 2016, at 11:00 PM, Joseph Gray wrote: > > Yes, I should have realized that it wasn't comparing the GPSDO against > anything. So, what is the point of this graph in Z38xx? > > On Wed, Mar 16, 2016 at 7:39 PM, Bob Camp wrote: >> Hi >> >> Be *very* careful looking at plots based on translated DAC readings. You >> don’t really have all you need to come up with proper numbers. A simple >> scale error can make things look much better or much worse than they >> actually are. >> >> Bob >> >>> On Mar 16, 2016, at 7:54 PM, Joseph Gray wrote: >>> >>> Well, the 4-port serial to Ethernet converter has been running for 22 >>> hours, collecting data from two GPSDO's and it hasn't missed a beat. >>> >>> Although I have had the Lucent unit running for several months, this >>> is the first time I have hooked up to the RS-422 port and taken data >>> from it. From the look of this graph, it seems to be performing quite >>> well. >>> >>> https://dl.dropboxusercontent.com/u/19599147/Lucent%20Adev.png >>> >>> Joe Gray >>> W5JG >>> >>> >>> On Tue, Mar 15, 2016 at 7:05 PM, Joseph Gray wrote: On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: > > And, if you have a couple of 422 devices, consider the economics of a > 4-port unit like: > > http://www.ebay.com/itm/301881123530 As promised, I am reporting on the USR-N540, 4-serial-port to Ethernet box that Tom linked to. I had originally found it for less, but after ordering, the seller emailed back to tell me he had no more at that price. In any event, after about three weeks from China, my unit arrived today. I haven't had any long term experience with this thing, so hopefully it will continue to work. It was very well packed in a small box with hard foam. Included are the converter box, wall wart (switcher), 2-pin screw terminal power adapter, serial cable, Ethernet cable and four DE-9 to 4-pin screw terminal adapters (for RS-422, RS-485). No documentation and no software. The box is made from steel and seems substantial. The power input is labeled "DC: 9-24V". I downloaded manuals and software from here: http://www.usriot.com/p/4-serial-port-to-ethernet-converter/ One annoying thing is that the box is setup with a static IP, instead of DHCP. The default IP of 192.168.0.7 is printed on the bottom, as well as in the manual. The MAC address is not printed on the bottom. The manual also lists the default login credentials. I initially only configured Port 1 in the web interface, to test with my HP Z3801A (RS-232, 19200, 7, odd, 1). I then installed the Virtual Serial Port software. This seems to be a licensed version of the Eltima software http://www.eltima.com/products/vspdxp/. Or, perhaps the Eltimat software is licensed from USR IOT? In the software, you can click on the "Smart VCOM" button and all four ports will be assigned for you, using the first available port numbers on your PC. I wanted a sequential range of 10-13, so I configured each port individually, using the "Add COM" button. The interface box uses TCP/IP ports of 23, 26, 29 and 32 by default, but these can be changed in the web interface. Interestingly, the MAC address can also be changed. The web interface is very well laid out and logical, as is the Virtual Serial Port software. I have been connected to the Z3801A for almost half an hour and things seem to be working just fine. I'll update if I encounter any problems later. I will have to try the RS-422 with my Lucent GPSDO. All in all, I am pleased with this converter box. At $20 per port, it seems like a good deal for a new item. I know that others are using surplus terminal servers that they bought for less. Approximate dimensions: 8.5" (including mounting ears) x 4.75" x 1.2" Joe Gray W5JG >>> ___ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. __
Re: [time-nuts] Serial-Ethernet
The Fury and other Jackson Labs GPSDOs can be put into manual holdover with the SYNChronization:HOLDover:INITiate command and taken out of holdover with the SYNChronization:HOLDover:RECovery:INITiate command. The phase measurement from the sync:tint? query remains valid while in the manual holdover state, so that this phase data could be used to create a valid ADEV plot of the oscillator in holdover. Keith Keith On Thu, Mar 17, 2016 at 7:21 AM, Paul wrote: > On Thu, Mar 17, 2016 at 10:00 AM, Tom Van Baak wrote: > > > this feature should be in every GPSDO, but I think it's unique to the > > TBolt. > > > > I was under the impression that SYNChronization:HOLDover:INITiate did this > on the Fury. > Of course I'm used to embarrassing misapprehensions. > > -- > Paul > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: > > And, if you have a couple of 422 devices, consider the economics of a 4-port > unit like: > > http://www.ebay.com/itm/301881123530 As promised, I am reporting on the USR-N540, 4-serial-port to Ethernet box that Tom linked to. I had originally found it for less, but after ordering, the seller emailed back to tell me he had no more at that price. In any event, after about three weeks from China, my unit arrived today. I haven't had any long term experience with this thing, so hopefully it will continue to work. It was very well packed in a small box with hard foam. Included are the converter box, wall wart (switcher), 2-pin screw terminal power adapter, serial cable, Ethernet cable and four DE-9 to 4-pin screw terminal adapters (for RS-422, RS-485). No documentation and no software. The box is made from steel and seems substantial. The power input is labeled "DC: 9-24V". I downloaded manuals and software from here: http://www.usriot.com/p/4-serial-port-to-ethernet-converter/ One annoying thing is that the box is setup with a static IP, instead of DHCP. The default IP of 192.168.0.7 is printed on the bottom, as well as in the manual. The MAC address is not printed on the bottom. The manual also lists the default login credentials. I initially only configured Port 1 in the web interface, to test with my HP Z3801A (RS-232, 19200, 7, odd, 1). I then installed the Virtual Serial Port software. This seems to be a licensed version of the Eltima software http://www.eltima.com/products/vspdxp/. Or, perhaps the Eltimat software is licensed from USR IOT? In the software, you can click on the "Smart VCOM" button and all four ports will be assigned for you, using the first available port numbers on your PC. I wanted a sequential range of 10-13, so I configured each port individually, using the "Add COM" button. The interface box uses TCP/IP ports of 23, 26, 29 and 32 by default, but these can be changed in the web interface. Interestingly, the MAC address can also be changed. The web interface is very well laid out and logical, as is the Virtual Serial Port software. I have been connected to the Z3801A for almost half an hour and things seem to be working just fine. I'll update if I encounter any problems later. I will have to try the RS-422 with my Lucent GPSDO. All in all, I am pleased with this converter box. At $20 per port, it seems like a good deal for a new item. I know that others are using surplus terminal servers that they bought for less. Approximate dimensions: 8.5" (including mounting ears) x 4.75" x 1.2" Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
> And, if you have a couple of 422 devices, consider the economics of a 4-port > unit like: > > http://www.ebay.com/itm/301881123530 > > I have no affiliation with any seller, nor have I tried these specific items. > But they are inexpensive and look worthwhile. OTOH, I'm nervous about any > networking product made in CN even if its web interface says "IOT Experts" > and "Be Honest, Do Best!"... > > /tvb Tom, I ordered one of those 4-port units. I will report back once I have it and have tested it. Thanks for the recommendation. I found it listed on Amazon for $40, but after I placed the order, the Chinese seller replied back and said he had no more. Darn. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Joe The problem I had was also with a Belkin unit Dave On 2/25/2016 5:19 PM, Brent Gordon wrote: Joe, I've had good luck with Systech Terminal Servers on eBay. I've bought five of them for use at home and work and none of them have had any problems. Two port ones are around $20 and four port ones are around $50. Some of them support RS-485. Make sure they come with the power supply. The supply is readily available, but why spend another $20? When configuring, you have to set them up as "Reverse Telnet". The only issue we've had is if the controlling program crashes, the Systech doesn't close the serial port. This blocks any new connections. At work, before we started buying the Systech boxes we bought VLinx ESP211's from B&B Electronics. Pricey, but they work well. They also support RS-485. Brent On 2/25/2016 6:50 AM, Joseph Gray wrote: What USB-Ethernet devices have you had good luck with? I am considering a somewhat expensive Silex device. I did buy a used Belkin-branded box that was made by Silex, but it kept disconnecting/reconnecting the USB devices. This seemed to be a common problem with this particular Belkin box. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Dave manu...@artekmanuals.com www.ArtekManuals.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Dave, I am running Win7 64-bit. Joe Gray W5JG On Thu, Feb 25, 2016 at 1:57 AM, Artek Manuals wrote: > On 2/25/2016 12:01 AM, Joseph Gray wrote: >> >> I just thought I'd report about a serial to Ethernet interface I just >> bought. I got one of these: >> >> http://www.amazon.com/gp/product/B00ATV2DX2 >> >> At the moment it is hooked up to my Z3801A and I am using Z38XX.exe >> from across the network. Using the included software and driver, I >> have the RS232 port mapped to COM 7 on my local PC. >> >> I bought this particular model not only because of price, but because >> it also does RS422. I will test this capability with my Lucent GPSDO >> with the RS422 ports. If it works, I'll order another one just for the >> Lucent. >> >> Joe Gray >> W5JG >> ___ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > Joe > > Thanks ...what operating System are you running. I have had problems in the > past with USB/ COM adapters that run on some versions of windows but not > others > Dave > NR1DX > > > -- > Dave > manu...@artekmanuals.com > www.ArtekManuals.com > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Joe, I've had good luck with Systech Terminal Servers on eBay. I've bought five of them for use at home and work and none of them have had any problems. Two port ones are around $20 and four port ones are around $50. Some of them support RS-485. Make sure they come with the power supply. The supply is readily available, but why spend another $20? When configuring, you have to set them up as "Reverse Telnet". The only issue we've had is if the controlling program crashes, the Systech doesn't close the serial port. This blocks any new connections. At work, before we started buying the Systech boxes we bought VLinx ESP211's from B&B Electronics. Pricey, but they work well. They also support RS-485. Brent On 2/25/2016 6:50 AM, Joseph Gray wrote: What USB-Ethernet devices have you had good luck with? I am considering a somewhat expensive Silex device. I did buy a used Belkin-branded box that was made by Silex, but it kept disconnecting/reconnecting the USB devices. This seemed to be a common problem with this particular Belkin box. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Tom, I forgot one thing I was going to say about your comment of not trusting CN network products. I fully understand these concerns. In fact, any networked device (regardless of manufacturer) that I have that does not require internet access has its "gateway" set to its own IP address. This may not be foolproof, but certainly makes it harder for malicious hardware to talk to the outside world. If I wanted to be extra cautious/paranoid, I could also add firewall rules to block devices by MAC address. Joe Gray W5JG On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: > Joe, > Thanks for that posting. I've also used a lot of LAN or USB to RS422 > converters, as well as RS232/422 adapters on my Z3801A. > > Before you commit to Amazon, note there are many Ethernet/RS422 offerings on > eBay. > Just do an eBay search for: RS422 ethernet > Or to uncover even more listings, in the search box, type: > > RS422 (Ethernet,LAN,TCP/IP,Network) > > I see there's some local ones (USA) for less than your Amazon find: > > http://www.ebay.com/itm/201326888567 > > http://www.ebay.com/itm/181841884873 > > There are also inexpensive bare-board versions like: > > http://www.ebay.com/itm/131700539876 > > And, if you have a couple of 422 devices, consider the economics of a 4-port > unit like: > > http://www.ebay.com/itm/301881123530 > > I have no affiliation with any seller, nor have I tried these specific items. > But they are inexpensive and look worthwhile. OTOH, I'm nervous about any > networking product made in CN even if its web interface says "IOT Experts" > and "Be Honest, Do Best!"... > > /tvb > > - Original Message - > From: "Joseph Gray" > To: "Discussion of precise time and frequency measurement" > > Sent: Wednesday, February 24, 2016 9:01 PM > Subject: [time-nuts] Serial-Ethernet > > >>I just thought I'd report about a serial to Ethernet interface I just >> bought. I got one of these: >> >> http://www.amazon.com/gp/product/B00ATV2DX2 >> >> At the moment it is hooked up to my Z3801A and I am using Z38XX.exe >> from across the network. Using the included software and driver, I >> have the RS232 port mapped to COM 7 on my local PC. >> >> I bought this particular model not only because of price, but because >> it also does RS422. I will test this capability with my Lucent GPSDO >> with the RS422 ports. If it works, I'll order another one just for the >> Lucent. >> >> Joe Gray >> W5JG > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Tom, There were two reasons I bought from Amazon, instead of ebay. First, I got it within 2-days w/Prime shipping, instead of two or more weeks from China. Second, it is easier to return things to Amazon. In fact, the first serial-Ethernet device I ordered had to be returned. It came with a bad power supply and even with a good supply, did not work. I felt that it was worth spending a bit more for these conveniences. As for a multi-port device, yes, that makes sense. I'll see if I can find something similar on Amazon. What USB-Ethernet devices have you had good luck with? I am considering a somewhat expensive Silex device. I did buy a used Belkin-branded box that was made by Silex, but it kept disconnecting/reconnecting the USB devices. This seemed to be a common problem with this particular Belkin box. Joe Gray W5JG On Thu, Feb 25, 2016 at 1:38 AM, Tom Van Baak wrote: > Joe, > Thanks for that posting. I've also used a lot of LAN or USB to RS422 > converters, as well as RS232/422 adapters on my Z3801A. > > Before you commit to Amazon, note there are many Ethernet/RS422 offerings on > eBay. > Just do an eBay search for: RS422 ethernet > Or to uncover even more listings, in the search box, type: > > RS422 (Ethernet,LAN,TCP/IP,Network) > > I see there's some local ones (USA) for less than your Amazon find: > > http://www.ebay.com/itm/201326888567 > > http://www.ebay.com/itm/181841884873 > > There are also inexpensive bare-board versions like: > > http://www.ebay.com/itm/131700539876 > > And, if you have a couple of 422 devices, consider the economics of a 4-port > unit like: > > http://www.ebay.com/itm/301881123530 > > I have no affiliation with any seller, nor have I tried these specific items. > But they are inexpensive and look worthwhile. OTOH, I'm nervous about any > networking product made in CN even if its web interface says "IOT Experts" > and "Be Honest, Do Best!"... > > /tvb > > - Original Message - > From: "Joseph Gray" > To: "Discussion of precise time and frequency measurement" > > Sent: Wednesday, February 24, 2016 9:01 PM > Subject: [time-nuts] Serial-Ethernet > > >>I just thought I'd report about a serial to Ethernet interface I just >> bought. I got one of these: >> >> http://www.amazon.com/gp/product/B00ATV2DX2 >> >> At the moment it is hooked up to my Z3801A and I am using Z38XX.exe >> from across the network. Using the included software and driver, I >> have the RS232 port mapped to COM 7 on my local PC. >> >> I bought this particular model not only because of price, but because >> it also does RS422. I will test this capability with my Lucent GPSDO >> with the RS422 ports. If it works, I'll order another one just for the >> Lucent. >> >> Joe Gray >> W5JG > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
On 2/25/2016 12:01 AM, Joseph Gray wrote: I just thought I'd report about a serial to Ethernet interface I just bought. I got one of these: http://www.amazon.com/gp/product/B00ATV2DX2 At the moment it is hooked up to my Z3801A and I am using Z38XX.exe from across the network. Using the included software and driver, I have the RS232 port mapped to COM 7 on my local PC. I bought this particular model not only because of price, but because it also does RS422. I will test this capability with my Lucent GPSDO with the RS422 ports. If it works, I'll order another one just for the Lucent. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. Joe Thanks ...what operating System are you running. I have had problems in the past with USB/ COM adapters that run on some versions of windows but not others Dave NR1DX -- Dave manu...@artekmanuals.com www.ArtekManuals.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Serial-Ethernet
Joe, Thanks for that posting. I've also used a lot of LAN or USB to RS422 converters, as well as RS232/422 adapters on my Z3801A. Before you commit to Amazon, note there are many Ethernet/RS422 offerings on eBay. Just do an eBay search for: RS422 ethernet Or to uncover even more listings, in the search box, type: RS422 (Ethernet,LAN,TCP/IP,Network) I see there's some local ones (USA) for less than your Amazon find: http://www.ebay.com/itm/201326888567 http://www.ebay.com/itm/181841884873 There are also inexpensive bare-board versions like: http://www.ebay.com/itm/131700539876 And, if you have a couple of 422 devices, consider the economics of a 4-port unit like: http://www.ebay.com/itm/301881123530 I have no affiliation with any seller, nor have I tried these specific items. But they are inexpensive and look worthwhile. OTOH, I'm nervous about any networking product made in CN even if its web interface says "IOT Experts" and "Be Honest, Do Best!"... /tvb - Original Message - From: "Joseph Gray" To: "Discussion of precise time and frequency measurement" Sent: Wednesday, February 24, 2016 9:01 PM Subject: [time-nuts] Serial-Ethernet >I just thought I'd report about a serial to Ethernet interface I just > bought. I got one of these: > > http://www.amazon.com/gp/product/B00ATV2DX2 > > At the moment it is hooked up to my Z3801A and I am using Z38XX.exe > from across the network. Using the included software and driver, I > have the RS232 port mapped to COM 7 on my local PC. > > I bought this particular model not only because of price, but because > it also does RS422. I will test this capability with my Lucent GPSDO > with the RS422 ports. If it works, I'll order another one just for the > Lucent. > > Joe Gray > W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] Serial-Ethernet
I just thought I'd report about a serial to Ethernet interface I just bought. I got one of these: http://www.amazon.com/gp/product/B00ATV2DX2 At the moment it is hooked up to my Z3801A and I am using Z38XX.exe from across the network. Using the included software and driver, I have the RS232 port mapped to COM 7 on my local PC. I bought this particular model not only because of price, but because it also does RS422. I will test this capability with my Lucent GPSDO with the RS422 ports. If it works, I'll order another one just for the Lucent. Joe Gray W5JG ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
