Novatest U5600, Instruction Manual, Page: 111 / 195

Novatest S.r.l.
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Manual for Multichannel Ultrasonic Pile Integrity Tester
103
required to set every time.
1. Sampling interval
The sampling interval between two samplings as of sampling on
signals may be chosen from several levels from 0.025 to 409.6
μ s, and
the default value is 0.4 μ s that is applicable for most measurement
occasions. According to the distance between transmitting and
receiving transducers (test distance) and depending upon the time
accuracy requirements, test on test piece, core sample and other small
size object may appropriately choose the small value, and on the
contrary, test for the object with large test distance may choose the
large value.
2. Sampling Length
Number of sample points of collected single-channel waveform
every time: there are 4 options (512, 1024, 2048 and 4096). The
default is 1024.Do not input large value without special requirement;
otherwise it will negatively affect the speed in dynamic collection.
3. Transmit voltage
Select excitation voltage value when ultrasonic stimulated
emission transducer generates ultrasonic pulse, there are several
options including 65, 250, 500 and 1000. The default is 500V,
which is applicable to most test conditions. If other test conditions
remain unchanged, the higher transmit voltage is, the stronger
received signal is.
It is suggested that test on test piece, and small