tag:blogger.com,1999:blog-6161778274523938171.post8286140029010776138..comments2023-06-23T04:41:12.261-04:00Comments on Watt's Up?: New Firmware Available for the N6700B, N6701A, and N6702A Modular Power System Frames.GaryRhttp://www.blogger.com/profile/13342106993487479289noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-6161778274523938171.post-88945807343709891422018-07-06T08:49:03.519-04:002018-07-06T08:49:03.519-04:00Hi,
Thanks for your post about ELOG. I am followi...Hi,<br /><br />Thanks for your post about ELOG. I am following below sequence.I don't have a bus to trigger, So i use immediate trigger.<br /><br />scope.instr.write('ABOR:ELOG,(@2)')<br />scope.instr.write('SENS:ELOG:FUNC:CURR ON,(@2)')<br />scope.instr.write('SENS:ELOG:FUNC:CURR:MINM ON,(@2)')<br />scope.instr.write('SENS:ELOG:PER 0.0006, (@)')<br />scope.instr.write('TRIG:ELOG:SOUR IMM,(@2)')<br />scope.instr.write('INIT:ELOG,(@2)')<br />scope.instr.write('TRIG:ELOG,(@2)')<br />scope.instr.query('FETC:ELOG? 1000,(@2)')<br /><br />Unfortunately FETC is not returning anything. Its getting timed out.<br /><br />ANy help is much appreciated.<br />What i want is-<br />1. start current measuremnet<br />2. stop measurement after say a3 secs<br />3. get the measured instantaneous current values.<br />I can do this by calling MEAS:CUR? query in loop in background. But ELOG looks cool for my requirement. But not working with above sequence. Do you have any clue ?<br /><br />Thanksrilwanhttps://www.blogger.com/profile/03078688439939241229noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-90622442344561363842016-06-07T02:20:20.618-04:002016-06-07T02:20:20.618-04:00Yes I am using channel sequencing feature, I am us...Yes I am using channel sequencing feature, I am using N6702A with 4 channels.<br />I want sequence the fall time i.e channels should disable the outpult after defined time.<br />This feaure is working for all other channels except channel 1.<br />For example if I set fall time for channel 1 as 5 secomds and channel 2 as 10seconds, channel 1 is disabling power immediatly after output disabling while channel 2 is disabling after 10 seconds.Somashekharnoreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-31322185764559592852016-06-06T13:25:31.853-04:002016-06-06T13:25:31.853-04:00Are you talking about the output sequencing featur...Are you talking about the output sequencing feature? Can you give me the exact sequence of events as well as the modules that you have in your mainframe?MattChttps://www.blogger.com/profile/14540938667419393933noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-39850654356083064062016-06-06T07:47:11.809-04:002016-06-06T07:47:11.809-04:00Hi Matthew,
I found one more issue, I am not able...Hi Matthew,<br /><br />I found one more issue, I am not able to set the fall time for channel 1.<br />otherthan channel 1, other channels fall time is working, but channel one is disabling as soon as I close the session.<br />Please help if you have any idea to solve this.Somashekharnoreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-63275825817849519152016-06-02T02:58:28.707-04:002016-06-02T02:58:28.707-04:00Thanks a Lot Matthew!!! I upgraded the firmware an...Thanks a Lot Matthew!!! I upgraded the firmware and now I am able to configure rise time from 0 to 1023 seconds.<br />Once again thank you very much for your quick response:)Somashekharnoreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-24362623841885046612016-06-01T14:29:31.423-04:002016-06-01T14:29:31.423-04:00I think that you might need to update your firmwar...I think that you might need to update your firmware. Please check the latest firmware at http://www.keysight.com/find/N6700firmware. MattChttps://www.blogger.com/profile/14540938667419393933noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-38464813577120949252016-06-01T08:20:12.031-04:002016-06-01T08:20:12.031-04:00Hi I am using n6702A power supply and tried config...Hi I am using n6702A power supply and tried configuring channel sequencing. I can able to give max of 1.023 seconds as rise time.<br /><br />My question is how to change the resolution to 1 second and rise time delay to 1023 second?Somashekharnoreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-28166361489330560612013-08-19T11:14:39.247-04:002013-08-19T11:14:39.247-04:00The worst issue for me with the N6700B (and N6751A...The worst issue for me with the N6700B (and N6751A supplies)<br />has been the unpredictable turn-on behavior when outputs are programmed to be coupled.<br />Using Channel1 and Channel4 as an example ...<br />Much of the time, they enable (ramp up) together, when 0.000 (seconds) time offset is programmed between them.<br />Then sometimes, the power-on delay relationship between the two jumps by 100 microseconds.<br />So 0.0000 seconds delay can mean 0.0000, or 0.0001 .<br />This has been a big issue for me, and for this reason I've had to change my approach to use an AWG or AFG, programming pulses using those as external digital trigger inputs for the different supply channels, transient voltage level mode.<br /><br />Larryhttps://www.blogger.com/profile/06213643991225542902noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-60734215326525568652013-08-03T15:44:46.764-04:002013-08-03T15:44:46.764-04:00Matthew, what is the input impedance of the trigge...Matthew, what is the input impedance of the trigger input pins of the digital port ?<br />What is the Vih and Vil of those trigger inputs ?<br />Thanks; LarryLarryhttps://www.blogger.com/profile/06213643991225542902noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-86976313164433356462013-07-29T18:29:45.245-04:002013-07-29T18:29:45.245-04:00Hi Larry,
We publish a table of the resolutions o...Hi Larry,<br /><br />We publish a table of the resolutions of the sequencing times in our programming help file located on our website.<br /><br />For your convenience, here it is:<br />Range in seconds Resolution<br />0 to 1.023E-4 100 nanoseconds<br />1.03E-4 to 1.023E-3 1 microsecond<br />1.03E-3 to 1.023E-2 10 microseconds<br />1.03E-2 to 1.023E-1 100 microseconds<br />1.03E-1 to 1.023E+0 1 millisecond<br />1.03E+0 to 1.023E+1 10 milliseconds<br />1.03E+1 to 1.023E+2 100 milliseconds<br />1.03E+2 to 1.023E+3 1 second<br /><br />but this is just for programming purposes and does not actually tell you what the accuracy is. I need to set up a test to see what I get on my units here. Stay tuned. <br /><br />MattChttps://www.blogger.com/profile/14540938667419393933noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-49780363425270310562013-07-26T12:05:12.709-04:002013-07-26T12:05:12.709-04:00No, still cannot get delay offsets closer than 1 m...No, still cannot get delay offsets closer than 1 millisecond of each other.<br /><br />So the right way to have precision channel-to-channel time sequencing is to program a multi-output AWG (or multiple delay lines) to drive timed trigger pulses in to individual trigger pins, right ?<br /><br />Then I need to program VOLT:MODE STEP, (@1:4)<br />and program VOLT:TRIG 3.30, (@1:4)<br />and program TRIG:TRAN:SOUR PINy, (@x) for each triggered output<br />and then INIT:TRAN (@1:4)<br /><br />Upon a triggered transient output voltage step, say it was at 0.0V and it's programmed to step up to 3.30V ... will the output still follow its programmed slew rate ? ( I hope so )<br /><br />Thanks; LarryLarryhttps://www.blogger.com/profile/06213643991225542902noreply@blogger.comtag:blogger.com,1999:blog-6161778274523938171.post-70940493310115708742013-07-25T15:39:14.860-04:002013-07-25T15:39:14.860-04:00Hi Matt, I have been trying to use the coupling-en...Hi Matt, I have been trying to use the coupling-enabled turn-on delay sequencing on my N6700B which I have been working with for 5 years.<br />My system has four N6751A power supplies in it.<br /><br />I have been using the rev C.01.04 firmware in the system.<br /><br />While the user documentation does not appear to give any resolution spec for the Output Delay times, I found via SCPI that if I program<br />very small delay offsets between channels then I can read those back via SCPI and say the values are programmed to be different by nanoseconds or picoseconds, those settings are stored as such.<br />This is additive to the max delay common offset of 25 milliseconds for my power supply type.<br /><br />I have tried programming a range of output slew rates, so as to view the actual turn-on delay on the force and sense points. <br />Judging by waveforms seen on the oscilloscope, the resolution of the programmed turn-on delay appears to be only effectively programmable in increments of 1 millisecond. For example, program two coupled outputs to turn on within 200 microseconds of each other, and they do not. Occasionally one of them will jump to another time slot, i.e. the uncertainty appears to be +/- 100 microseconds but the programmed resolution appears to be in units of milliseconds.<br /><br />Today I upgraded my N6700B firmware from C.01.04 to the latest available, which is D.02.01. Do you believe I should see any improvement i.e. reduction in the minimum time delay resolution of programmed output turn-on time values ?<br /><br />Thanks; LarryLarryhttps://www.blogger.com/profile/06213643991225542902noreply@blogger.com