Acquisition and Display
7-7
IM 701310-01E
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App
Index
7.6 Turning Interpolation ON/OFF
Procedure
1.
Press SAMPLING/LENGTH.
2.
Press the Interpolation soft key to select ON or OFF.
Explanation
Interpolation adds up to 1000 times more data to the actual sampled data, and increases
the effective sampling rate to up to 2.5 TS/s (adds up to 2000 times more data in high
resolution mode).
At the maximum sample rate, the relationship between interpolation and repetitive
sampling is as follows:
• When interpolation and repetitive sampling mode are both ON
, if T/div is greater than
50 ns and the sample rate is less than 500 GS/s, the DL9000 uses interpolation. If
T/div is less than or equal to 50 ns and the sample rate is greater than or equal to 500
GS/s or greater
, the DL9000 uses repetitive sampling.
• When interpolation is ON and repetitive sampling mode is OFF
, the DL9000
interpolates at the set record length.
• When interpolation is OFF and repetitive sampling is ON, repe
titive sampling is
performed at a record length less than or equal to 1.25 MW (less than or equal to 625
kW for the DL9040, DL9140, and DL9240).
• When interpolation and repetitive sampling are both OFF
, if the sample rate is set
higher than the maximum sample rate for the current record length, the record length
will be shortened. When the record length is less than 100 W, repetitive sampling is
performed.
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