{"id":31642,"date":"2019-07-30T10:09:03","date_gmt":"2019-07-30T15:09:03","guid":{"rendered":"https:\/\/www.logicbus.com.mx\/blog\/?p=31642"},"modified":"2023-05-19T21:42:38","modified_gmt":"2023-05-19T21:42:38","slug":"waveform-generators","status":"publish","type":"post","link":"https:\/\/www.logicbus.com.mx\/blog\/waveform-generators\/","title":{"rendered":"Waveform Generators"},"content":{"rendered":"

Spanish version<\/span><\/a><\/h2>\n

1. Introduction<\/strong><\/h2>\n

Multi-channel function generators are useful in many situations. For example, in Radar testing the generator needs to output several phase coherent signals and for the phase to be independently adjustable for each signal. In 3-phase power line harmonic distortion testing, a 4 channel generator is required to simulate the multiple voltages and currents.<\/p>\n

1.1 Problem<\/strong><\/h3>\n

A standalone multi-channel generator can be very expensive.<\/p>\n

1.2 Solution<\/strong><\/h3>\n

Siglent provides the Multi-Device Synchronization function in the SDG1000X<\/span><\/a>, SDG2000X<\/span><\/a>, and SDG6000X<\/span><\/a> generators. This allows synchronization among several units in order to output signals with adjustable steady phase relationships. Thus saving on cost.<\/p>\n

2. Setup of Synchronization<\/strong><\/h2>\n

2.1 Wiring<\/strong><\/h3>\n

Multi-Device Synchronization will require the use of the Aux In\/Out and 10 MHz In\/Out rear-panel interfaces to implement the synchronization.\u00a0First, all the generators\u2019 Aux In\/Out BNC connectors need to be connected together. Next, connect the Master unit\u2019s 10 MHz Out to the Slave unit\u2019s 10 MHz In. Please note that the\u00a0<\/strong>SDG6000X family has separate 10 MHz In\/Out outputs, so more than two units can be synchronized. The wiring interconnection concept is shown in Figure 1.<\/p>\n

\"\"
Figure 1. Wiring concept.<\/figcaption><\/figure>\n

 <\/p>\n

However, the SDG2000X and SDG1000X series\u2019 10 MHz In\/Out ports share one connector. \u00a0Therefore, only two units can be synchronized together or they must be the last Slave unit in a multiple units connection.<\/p>\n

In this note, the SDG2000X and SDG6000X series models are used as our example. The SDG6000X will be the Master device.<\/p>\n

1)<\/strong>\u00a0First connect two units\u2019Aux In\/Out with BNC cable. See in Figure 2.<\/p>\n

\"\"<\/a>
Figure 2. Connect SDG2000X and SDG6000X Aux In\/Out.<\/figcaption><\/figure>\n

 <\/p>\n

2)<\/strong>\u00a0Next connect the SDG6000X 10 MHz Out port with the SDG2000X 10 MHz In\/Out port, as shown in Figure 3.<\/p>\n

\"\"
Figure 3. Connect Master 10 MHz Out to Slave 10 MHz In.<\/figcaption><\/figure>\n

 <\/p>\n

2.2 Parameter settings<\/strong><\/h3>\n

Set the waveform parameters, such as Frequency and Amplitude, on 4 all channels. More information on this step can found in the User Manual.<\/p>\n

Press Utility, go to Page 2\/3, choose Phase Mode, and then set both units as Phase Locked.<\/strong><\/p>\n

In this example we are setting all 4 channels as a 1 kHz, 4 Vpp square wave. CH3, CH4 signals viewed on the SDS5000X<\/span><\/a> oscilloscope are output by the Slave generator, note that the phase\u00a0is drifting. Open the Display\/ Persist function to track it on the scope, as shown in Figure 4.<\/p>\n

\"\"
Figure 4. Four signals phase drift without synchronization.<\/figcaption><\/figure>\n

 <\/p>\n

\u00a02.2.1 Set Master Device<\/strong><\/h3>\n

1) Press Utility button, go to Page 3\/3, then press the soft key under screen to select Multi-Device Sync.<\/strong>\u00a0The menu will enter the Multi-Device Synchronization screen, shown in Figure 5.<\/p>\n

\"\"
Figure 5. Multi-Device Synchronization Screen.<\/figcaption><\/figure>\n

 <\/p>\n

2)<\/strong>\u00a0Press the soft key under the screen to turn on\/off this function and select it as either the Master or Slave. The Multi-Devices Synchronization menu will appear when turned on. When \u201dMaster\u201d appears shaded in light gray this means the device is designated as the Master device, as shown in Figure 6. When this device is set to be the master, its clock source is automatically set to internal and the 10 MHz output is enabled.<\/p>\n

\"\"
Figure 6. Turn on synchronization function.<\/figcaption><\/figure>\n

2.2.2 Set Slave Device<\/strong><\/h3>\n

1)<\/strong>\u00a0Enter into the Multi-Device Synchronization menu. Select it as Slave, Slave will be shaded in blue, as in Figure 7. As the device is set to a slave device its clock source is automatically set to external.<\/p>\n

\"\"
Figure 7. Select the unit as Slave device.<\/figcaption><\/figure>\n

 <\/p>\n

2)<\/strong>\u00a0Turn on the State. Then the Slave Device Delay window will occur. Press to enter delay value, as shown in Figure 8.<\/p>\n

\"\"
Figure 8. Set the Slave Delay.<\/figcaption><\/figure>\n

<\/h3>\n

2.2.3 Synchronize the Devices<\/strong><\/h3>\n

Press the soft key \u201dSyncs Devices\u201d in the Multi-Device Synchronization interface of the Master device, as shown in Figure 1, to begin synchronization between the master and slave devices. Anytime a setting is changed; for example, the Slave Device Delay, \u201dSync Devices\u201d must be pressed to activate the new settings.<\/p>\n

 <\/p>\n

3. Measure on an Oscilloscope<\/strong><\/h2>\n

3.1 Slave Device Delay measurement<\/strong><\/h3>\n

1)<\/strong>\u00a0Turn on Synchronization on both units,\u00a0measure the Skew between CH1 and CH3.<\/strong>\u00a0As in Figure 9.<\/p>\n

\"\"
Figure 9. Measure the Skew between Master and Slave Devices.<\/figcaption><\/figure>\n

 <\/p>\n

2) Enter the absolute Mean value of Skew into Slave Device Delay.<\/strong>\u00a0This will eliminate the delay between traces that we observed with our oscilloscope. See Figure 10.<\/p>\n

\"\"
Figure 10. Eliminate the Slave Delay.<\/figcaption><\/figure>\n

 <\/p>\n

3.2 Adjust phase relationship<\/strong><\/h3>\n

Set CH1 Phase as 0 degree, CH2, CH3, CH4 Phase as 180, 270, 360 degrees, respectively. The result is shown in Figure 11.<\/p>\n

\"\"
Figure 11. Adjust phase relationship.<\/figcaption><\/figure>\n

 <\/p>\n

—<\/p>\n

You can purchase our products in Mexico on the following page https:\/\/www.logicbus.com.mx\/<\/span><\/a>, in the USA and the rest of the world here https:\/\/www.logicbus.com<\/span><\/a>.<\/p>\n

For direct contact you can send an email to ventas@logicbus.com<\/span><\/a> or if you need advice support@logicbus.com<\/span><\/a>.<\/p>\n

You can call us at +52 33 3854 5975<\/span> or start a direct chat in the \u201cbubble<\/span><\/a>\u201d at the bottom, we are online from Monday to Friday 08:00 a.m. to 6:00 p.m. and Saturdays from 10:00 a.m. to 1:00 p.m. Mexico time.<\/p>\n","protected":false},"excerpt":{"rendered":"

Spanish version 1. Introduction Multi-channel function generators are useful in many situations. For example, in Radar testing the generator needs to output several phase coherent signals and for the phase to be independently adjustable for each signal. In 3-phase power line harmonic distortion testing, a 4 channel generator is required to simulate the multiple voltages […]<\/p>\n","protected":false},"author":1,"featured_media":31655,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,4712],"tags":[5549,4358,4357,4278,4356],"class_list":["post-31642","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eventos-cursos-y-webinarios","category-publicaciones-en-ingles","tag-consumo-y-analisis-de-energia-electrica","tag-sdg1000x","tag-sdg2000x","tag-siglent","tag-waveform-generator"],"yoast_head":"\nWaveform Generators – Blog Logicbus<\/title>\n<meta name=\"description\" content=\"Multi-channel function generators are useful in many situations. 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