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How long will the DS7000 Capture a Signal

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Posted on: December 16th, 2020 by Doug Lovell

To determine how long an oscilloscope will capture a signal when it is operated in single trigger mode is determined by taking the instrument’s memory depth and dividing it by the instrument’s sample rate. The memory depth can be changed within the instrument’s acquire menu and then the sample rate can be changed by adjusting the horizontal scaling. The table below lists the different memory depth and sample rate combinations that are possible on the DS7000 series and lists the instruments capture time.

Note that the length of time listed is in seconds and this is for one channel.

	Memory Depth (Points)									Deep Memory Option
Sample Rate (Sa/Sec)	1000	10000	100000	1000000	25000000	50000000	100000000	125000000	250000000	500000000
10000	0.1	1	10	100	2500	5000	10000	12500	25000	50000
20000	0.05	0.5	5	50	1250	2500	5000	6250	12500	25000
50000	0.02	0.2	2	20	500	1000	2000	2500	5000	10000
100000	0.01	0.1	1	10	250	500	1000	1250	2500	5000
200000	0.005	0.05	0.5	5	125	250	50	625	1250	2500
500000	0.002	0.02	0.2	2	50	100	200	250	500	1000
1000000	0.001	0.01	0.1	1	25	50	100	125	250	500
2000000	0.0005	0.005	0.05	0.5	12.5	25	50	62.5	125	250
5000000	0.0002	0.002	0.02	0.2	5	10	20	25	50	100
10000000	0.0001	0.001	0.01	0.1	2.5	5	10	12.5	25	50
25000000	0.00004	0.0004	0.004	0.04	1	2	4	5	10	20
50000000	0.00002	0.0002	0.002	0.02	0.5	1	2	2.5	5	10
125000000	0.000008	0.00008	0.0008	0.008	0.2	0.4	0.8	1	2	4
250000000	0.000004	0.00004	0.0004	0.004	0.1	0.2	0.4	0.5	1	2
500000000	0.000002	0.00002	0.0002	0.002	0.05	0.1	0.2	0.25	0.5	1
1250000000	0.0000008	0.000008	0.00008	0.0008	0.02	0.04	0.08	0.1	0.2	0.4
2500000000	0.0000004	0.000004	0.00004	0.0004	0.01	0.02	0.04	0.05	0.1	0.2
5000000000	0.0000002	0.000002	0.00002	0.0002	0.005	0.01	0.02	0.025	0.05	0.1
10000000000	0.0000001	0.000001	0.00001	0.0001	0.0025	0.005	0.01	0.0125	0.025	0.05

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