Agilent DSO6104l and memory use? - Page 1
Forum section: electronics / testgear

author: egonotto
author_rank: Super Contributor
timestamp: September 03, 2018, 04:51:57 pm
content: Hello,I don't understand the use of the memory in the Agilent DSO6104L (this is a rackversion of the DSO6104A)In "DSO6104l_run.jpg" is an acquisition with high res mode in run modus.There is 1Mpts used from the 8Mpts memory.In "DSO6104l_single.jpg" the acquisition with high res mode is now in single mode. This is the only change.Now is 4Mpts used.I suppose that in high res mode a sample is 16 bit and in normal mode a sample is only 8 bit. And the 8Mpts in the datasheet should better called 8MBBut why is in single-mode 4 times so much samples as in run-mode?Can anybody this please explain.Best regardsegonotto

author: nctnico
author_rank: Super Contributor
timestamp: September 03, 2018, 05:25:59 pm
content: Read the manual. In run mode the oscilloscope cuts the memory in half to use double buffering (half the memory for acquisition, half the memory to process for display).

author: egonotto
author_rank: Super Contributor
timestamp: September 03, 2018, 05:43:49 pm
content: Hello,I would understand half the memory in run mode for double buffering and again half for high res-mode. That would give 2Mpts.But it is only 1 Mpts. From where comes the third half?Best regardsegonotto

author: egonotto
author_rank: Super Contributor
timestamp: September 06, 2018, 02:04:25 am
content: Hello,the save of 8000000 pts ASCII XY data file to USB-stick needs about 50 minutes.The file is 178MB.Best regardsegonotto

author: Carrington
author_rank: Super Contributor
timestamp: September 06, 2018, 09:07:25 am
content: Download it as binary.And then use "M1WV" (M1 Waveform Viewer) to save as CSV or XLS.Another option maybe can be this tool VISA TM Data Capture:http://jahonen.kapsi.fi/Electronics/VISA_TM_DC/I think it allows you to save as csv, I don't remember if it is faster through the LAN.Also "Agilent IntuiLink" can open binary files, but it can't export to csv, so I add other tool in attachments "binToAscii", it convet from bin to csv.If someone knows more tools, please share.

author: egonotto
author_rank: Super Contributor
timestamp: December 14, 2018, 08:11:02 pm
content: Hello,I don't understand the use of the memory in the Agilent DSO6104L worse as before.In datasheet for Logic channels (with MSO option):"Memory depth 1 pod /both podStandard memory 8 Mpts/4 Mpts"But with 1pod on one has:0.1ms/div autorun one have 500MSa/s that is 0.5Mpts0.1ms/div single one have 2GSa/s that is 2Mpts0.2ms/div autorun one have 250MSa/s that is 0.5Mpts0.2ms/div single one have 500MSa/s that is 1Mpts0.5ms/div autorun one have 100MSa/s that is 0.5Mpts0.5ms/div single one have 250MSa/s that is 1,25MptsNow analog off:0.5ms/div autorun one have 400MSa/s that is 2MptsWhere are the 8Mpts?Best regardsegonotto

author: nctnico
author_rank: Super Contributor
timestamp: December 14, 2018, 08:35:00 pm
content: It is really simple. The memory is shared between all channels and double buffering. In single mode double buffering is switched off.Do you have the 8Mpts option? It doesn't seem like it. BTW this is what I really don't like about Keysight scopes. The memory depth on the badge is very far from what is actually useable.

author: egonotto
author_rank: Super Contributor
timestamp: December 14, 2018, 09:19:59 pm
content: Hello nctnico,thanks for your response.My DSO6104L has the option mem8M and 8MB (dso6104l_single_10ms)I belief this is standard.In the datasheet of Agilent Technologies InfiniiVision 6000L Series Low-Profile Oscilloscopes there is no indication of shared memory.(Published in USA, September 20, 20115989-5470EN):"Logic channels (with MSO option)Number of channels 16 logic timing channels – labeled D15 - D0Maximum input frequency 250 MHzSample rate 2 GSa/sec one pod*, 1 GSa/sec each podMemory depth 1 pod /both podStandard memory 8 Mpts/4 MptsVertical resolution 1 bit"In the datasheet of Agilent Technologies InfiniiVision 6000 Series Oscilloscopes there is a indication of shared memory.(Printed in USA, August 19, 2008Agilent Technologies 5989-2000EN):"Acquisition: digital channels (MSO6000A or MSO-upgraded DSO6000A only)Sample rate 2 GSa/sec one pod**, 1 GSa/sec each podMaximum input frequency 250 MHzMemory depth One pod/both pods (with scope channels turned off)8 Mpts/4 MptsOne pod/both pods (with scope channels turned on)2.5 Mpts/ 1.25 MptsVertical resolution 1 bit"It is a shame that in a datasheet is so a substantial mistake.Best regardsegonotto

author: Keysight DanielBogdanoff
author_rank: Unknown
timestamp: December 15, 2018, 09:16:38 am
content: Give our support center a call, they should be able to help you out! (link to that in my signature)

author: egonotto
author_rank: Super Contributor
timestamp: December 17, 2018, 04:06:56 pm
content: Hello,@Keysight DanielBogdanoff:Thanks for your replay. But I think that my DSO6104L works well.The statement in the datasheet of Agilent Technologies InfiniiVision 6000L Series Low-Profile Oscilloscopes (Published in USA, September 20, 2011 5989-5470EN):"Sample rate 2 GSa/sec one pod*, 1 GSa/sec each podMemory depth 1 pod /both podStandard memory 8 Mpts/4 Mpts"let me think that my DSO6104L should have 8Mpts for the digital channels independent of the state of the analog channels.But this is not true.Best regardsegonotto