Arbitrary Waveform Generator (AWG) - Revision history

Riemerg at 12:06, 21 August 2017

2017-08-21T12:06:01Z

← Older revision		Revision as of 12:06, 21 August 2017
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	</pre>		</pre>
			=== Detailed discussion ===
			For more information, you can read [https://www.lab-nation.com/forum/software/topics/how-to-reduce-the-duty-cycle-below-12 this forum thread] which discusses AWG operation in more detail through a practical use-case.

Riemerg at 12:20, 17 August 2016

2016-08-17T12:20:48Z

← Older revision		Revision as of 12:20, 17 August 2016
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			'''!!! NOTE: The Generator menu entry will only show up when a genuine SmartScope has been attached !!!'''

	The SmartScope has an Arbitrary waveform generator, capable of generating signals between the [0V, 3.3V] voltage range at a sample rate of 100MS/s.		The SmartScope has an Arbitrary waveform generator, capable of generating signals between the [0V, 3.3V] voltage range at a sample rate of 100MS/s.
	= AWG pin location =		= AWG pin location =
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	= Configuring the AWG using pre-defined waves =		= Configuring the AWG using pre-defined waves =
	You can define your own waveforms (see below), or you can use one of the built-in signals which have been predefined in the SmartScope app. In order to do so, first open up the main menu by tapping on the LabNation logo at the bottom-left of the screen, and expand the ~~AWG~~ menu.		You can define your own waveforms (see below), or you can use one of the built-in signals which have been predefined in the SmartScope app. In order to do so, first open up the main menu by tapping on the LabNation logo at the bottom-left of the screen, and expand the Generator menu.
	<br>[[File:~~AWG_activate~~.png~~\|800px~~]]<br><br>		<br>[[File:Generator.png]]<br><br>
	Next, select the type of predefined waveform you want the AWG to generate:		Next, open up the Analog submenu and select the type of predefined waveform you want the AWG to generate:
	<br>[[File:~~AWG_selectWave~~.png~~\|800px~~]]<br><br>		<br>[[File:Sawtooth.png]]<br><br>
	Configure the amplitude, offset and frequency of the wave to be generated.		Configure the amplitude, offset and frequency of the wave to be generated.
	<br>'''TIP''': ~~Dragging a cursor down allows to fine~~-~~tune~~ the value.		<br>'''TIP''': Double-tapping the value will bring up the Numpad, which makes it much easier to specify accurate values
	<br>'''NOTE''': At this point the AWG output is not yet active. You have to use the 'Upload function' button to activate the output (see further).<br>		<br>'''NOTE''': At this point the AWG output is not yet active. You have to use the 'Upload function' button and check the Analog checkbox to activate the output (see further).<br>
	<br>		<br>
	The AWG is configurable within these limits:		The AWG is configurable within these limits:
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	\| 781kHz		\| 781kHz
	\|}		\|}
	~~<br>[[File:AWG_freq.png\|800px]]~~<br><br>		<br><br>
	~~And finally :~~ hit the 'Upload ~~function~~' button, which will transfer the data to the SmartScope ~~and '''activate'''~~ the AWG output.		When you're done, hit the 'Upload' button, which will transfer the data to the SmartScope the AWG output. The Upload button will be highlighted while the data is being sent to the SmartScope.
	<br>'''NOTE''': ~~This data upload can require up~~ to ~~2 seconds, during which any acquisition of~~ the ~~oscilloscope or logic analyzer will pause~~.<br>		<br>'''NOTE''': At this point the AWG output is not yet active. You still have to check the Analog checkbox to activate the output (see further).<br>
	<br>[[File:~~AWG_upload~~.png~~\|800px~~]]<br><br>		<br>[[File:GenUpload.png]]<br><br>

			<br><br>
			With everything prepared, make sure to check the checkbox next to the Analog entry to enable the AWG output buffer:
			<br>[[File:EnableAnalog.png]]<br><br>
	= Configuring the AWG using csv files =		= Configuring the AWG using csv files =
	'''IMPORTANT''': The app expects the CSV file to use a '''semicolon''' (;) as a field separator and a '''comma''' (,) as decimal symbol. Download one of the samples below to make sure your CSV works.		'''IMPORTANT''': The app expects the CSV file to use a '''semicolon''' (;) as a field separator and a '''comma''' (,) as decimal symbol. Download one of the samples below to make sure your CSV works.
	<br>'''NOTE1''': The CSV file '''may''' contain more than the number of samples specified in the parameters. Further samples will simply be ignored		<br>'''NOTE1''': The CSV file '''may''' contain more than the number of samples specified in the parameters. Further samples will simply be ignored
	<br>'''NOTE2''': This only works with a SmartScope connected. Otherwise, the side menu won't contain ~~an AWG item~~		<br>'''NOTE2''': This only works with a SmartScope connected. Otherwise, the side menu won't contain the Generator entry
	If you haven't used dropbox with the SmartScope		If you haven't used dropbox with the SmartScope
	# Tap sidemenu > ~~AWG~~ > Upload from dropbox		# Tap sidemenu > Generator > Analog > Upload from dropbox
	# The app will tell you it doesn't have permission to dropbox and ask for it by sending you off to the dropbox website		# The app will tell you it doesn't have permission to dropbox and ask for it by sending you off to the dropbox website
	# Grant access and return to the app		# Grant access and return to the app

Riemerg at 20:11, 7 August 2016

2016-08-07T20:11:12Z

← Older revision		Revision as of 20:11, 7 August 2016
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	The AWG is driven by a 100MHz clock, reading out a memory containing ''up to'' 2048 samples.		The AWG is driven by a 100MHz clock, reading out a memory containing ''up to'' 2048 samples.

			== Define arbitraty waveform in Excel (.csv file upload) ==
	{\| class="wikitable"		{\| class="wikitable"
	\|-		\|-
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	\| DataIsBytes		\| DataIsBytes
	\| 0 or 1		\| 0 or 1
	\| Indicates if the data should be interpreted as bytes. If '0', it will be interpreted as voltages		\| Indicates if the data should be interpreted as bytes (for the 4 digital outputs). If '0', it will be interpreted as voltages (for the analog output).
	\|-		\|-
	\| Samples		\| Samples
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	The [[Media:awg_worksheet.xlsx\|AWG excel worksheet]] contains examples of how to compute these parameters.		The [[Media:awg_worksheet.xlsx\|AWG excel worksheet]] contains examples of how to compute these parameters.

	== Sample CSV ==		=== Sample CSV ===
	<pre>		<pre>
	Value;Field;Description		Value;Field;Description

Jasper: /* Under the hood */

2016-03-16T09:57:03Z

Under the hood

← Older revision		Revision as of 09:57, 16 March 2016
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	! Range		! Range
	! Description		! Description
			\|-
			\| DataIsBytes
			\| 0 or 1
			\| Indicates if the data should be interpreted as bytes. If '0', it will be interpreted as voltages
	\|-		\|-
	\| Samples		\| Samples
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	The [[Media:awg_worksheet.xlsx\|AWG excel worksheet]] contains examples of how to compute these parameters.		The [[Media:awg_worksheet.xlsx\|AWG excel worksheet]] contains examples of how to compute these parameters.


	== Sample CSV ==		== Sample CSV ==

Jasper: /* Sample CSV */

2016-03-16T09:56:14Z

Sample CSV

@@ Line 95: / Line 95: @@
 ,1;;
 ;;
 </pre>

Esteevens at 19:20, 3 January 2016

2016-01-03T19:20:12Z

← Older revision		Revision as of 19:20, 3 January 2016
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	<br>[[File:AWG_selectWave.png\|800px]]<br><br>		<br>[[File:AWG_selectWave.png\|800px]]<br><br>
	Configure the amplitude, offset and frequency of the wave to be generated.		Configure the amplitude, offset and frequency of the wave to be generated.
	<br>'''TIP''': Dragging a cursor down allows to fine-tune the value.<br>		<br>'''TIP''': Dragging a cursor down allows to fine-tune the value.
			<br>'''NOTE''': At this point the AWG output is not yet active. You have to use the 'Upload function' button to activate the output (see further).<br>
			<br>
	The AWG is configurable within these limits:		The AWG is configurable within these limits:
	{\| class="wikitable"		{\| class="wikitable"
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	\|}		\|}
	<br>[[File:AWG_freq.png\|800px]]<br><br>		<br>[[File:AWG_freq.png\|800px]]<br><br>
	And finally: hit the 'Upload function' button, which will transfer the data to the SmartScope and activate the AWG output.		And finally : hit the 'Upload function' button, which will transfer the data to the SmartScope and '''activate''' the AWG output.
	<br>'''NOTE''': This data upload can require up to 2 seconds, during which any acquisition of the oscilloscope or logic analyzer will pause.<br>		<br>'''NOTE''': This data upload can require up to 2 seconds, during which any acquisition of the oscilloscope or logic analyzer will pause.<br>
	<br>[[File:AWG_upload.png\|800px]]<br><br>		<br>[[File:AWG_upload.png\|800px]]<br><br>

Riemerg at 10:20, 2 March 2015

2015-03-02T10:20:53Z

@@ Line 8: / Line 8: @@
 In the image above, you can see the AWG pin is surrounded by 2 ground pins, either of which you can use to connect to the other device.
-= How the AWG works =
 The AWG is driven by a 100MHz clock, reading out a memory containing ''up to'' 2048 samples.
@@ Line 32: / Line 79: @@
 The [[Media:awg_worksheet.xlsx|AWG excel worksheet]] contains examples of how to compute these parameters.
-= Sample CSV =
+== Sample CSV ==
 <pre>
 Value;Field;Description

Jasper: /* How the AWG works */

2015-03-02T09:33:28Z

How the AWG works

← Older revision		Revision as of 09:33, 2 March 2015
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	\| BeginData		\| BeginData
	\|		\|
	\| Field to indicate that from here on the sample ~~data follows~~		\| Field to indicate that from here on the sample voltage levels follow
	\|}		\|}

			The [[Media:awg_worksheet.xlsx\|AWG excel worksheet]] contains examples of how to compute these parameters.

	= Configuring the AWG using pre-defined waves =		= Configuring the AWG using pre-defined waves =

Jasper: /* Sample CSV */

2015-03-02T09:25:43Z

Sample CSV

@@ Line 51: / Line 51: @@
 <pre>
 Value;Field;Description
 ;Samples;The number of samples to use (later samples are ignored)
 ;SampleStretch;The number of times to repeat a sample
 ,1;BeginData;Data begins here
 ,2;;
 ,3;;

Jasper: /* How the AWG works */

2015-03-02T09:25:30Z

How the AWG works

← Older revision		Revision as of 09:25, 2 March 2015
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	\|-		\|-
	\| Samples		\| Samples
	\| ~~128~~-2048		\| 1-2048
	\| The number of samples used. The AWG loops on these samples.		\| The number of samples used. The AWG loops on these samples. (< 0.0.8.4 had a minimum of 128 samples)
	\|-		\|-
	\| SampleStretch		\| SampleStretch