## Please explain PicoScope 3206 sampling rates!

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kwdye77
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Posts: 3
Joined: Wed Mar 30, 2005 2:50 pm
Location: Infineon Technologies

### Please explain PicoScope 3206 sampling rates!

I am using the PS3000 example Labview vi. I have the PicoScope 3206, using a single channel. The 2nd channel is NOT routed to double the effective sampling rate, so I am assuming that the maximum sampling rate is 100 MS/second. The PicoScope 3206 documentation explains that the timebase enumerations number from 0 to 14--0 being equal to the max sampling capability (100 MHz in my case). Does this mean that a timebase setting of 14 equates to 6 KHz, and 6KHz is the minimum frequency I can select? My application requires a sampling rate around 2-3 KHz. How can this be accomplished?

Sarah
Hi

I have been checking with our engineers and unfortunately our documentation needs updating here. The maximum timebase for the PS3206 is now 21 (which gives a sample rate of 95Hz).

This will soon be amended in our documentation.

Hope this helps

Best Regards

kwdye77
User
Posts: 3
Joined: Wed Mar 30, 2005 2:50 pm
Location: Infineon Technologies
You mentioned that the PicoScope 3206 has a maximum timebase of 21--making the minimum frequency 95 Hz. Perhaps my math is wrong but at 21, I get the minimum timebase of .47 Hz. Please see the table below:
0 1,000,000.000000
1 500,000.000000
2 250,000.000000
3 125,000.000000
4 62,500.000000
5 31,250.000000
6 15,625.000000
7 7,812.500000
8 3,906.250000
9 1,953.125000
10 976.562500
11 488.281250
12 244.140625
13 122.070313
14 61.035156
15 30.517578
16 15.258789
17 7.629395
18 3.814697
19 1.907349
20 0.953674
21 0.476837

Sarah
Hi

The table should actually go something like this:

0: 200000000Hz (not available if 2 channels enabled)
1: 100000000Hz
2: 50000000Hz
3: 25000000Hz
4: 12500000Hz
5: 6250000Hz
6: 3125000Hz
7: 1562500Hz
8: 781250Hz
9: 390625Hz
10: 195312.5Hz
11: 97656.25Hz
12: 48828.125Hz
13: 24414.0625Hz
14: 12207.03125Hz
15: 9103.515625Hz
16: 3051.757813Hz
17: 1525.878906Hz
18: 762.9394531Hz
19: 381.4697266Hz
20: 190.7348633Hz
21: 95.36743164Hz

Hope this helps

Best Regards

kwdye77
User
Posts: 3
Joined: Wed Mar 30, 2005 2:50 pm
Location: Infineon Technologies
Sarah: I noted that timebase #15 in your table reads 9103.515625Hz which is not half of #14 12207.03125Hz. Is this a typo or correct?

Sarah
Hi