I have two 9237 and one 9205 installed on chassis 9178. In order to acquire data simultaneously, all the 9237 and 9205 use the onboardclock of chassis 9178. But when the sample rate is 20000 Hz, getting 20000 points just takes less than 1 second. When the sample rate is 10000Hz, getting 10000 points takes 1 second. Why does this happen ?
One 9237 use one channel, another 9237 use 4 channels, the 9205 use 3 channels (differential). And the 9178 manual make me a little confused, is the onboardclock frequency 80 MHz ?
Look forward your help. Thanks.