Other Parts Discussed in Thread: TS3A44159, TDC7200
For example i get these results when the two transducers ( 1 and 2) are connected to TX1 and TX2 (1->TX1 and 2->TX2):
(Results in nanoseconds) ( All measurements below are with zero water flow)
---------
37813.1978
37811.4699
-1.727882 (ΔTOF)
---------
37813.1764
37811.4724
-1.704005
---------
37813.166
37811.4840
-1.682742
---------
37812.959
37811.1410
-1.818781
---------
37812.9396
37811.2028
-1.736890
---------
37812.8889
37811.2513
-1.637647
When i change the two transducers (1->TX2 and 2->TX1) i get the opposite results:
---------
37811.8544
37813.1843
1.3299222
---------
37811.8440
37813.265
1.4219515
---------
37811.8740
37813.1949
1.3208880
---------
37811.8254
37813.2154
1.3900553
---------
37811.8237
37813.2362
1.4124477
Other times, with zero flow still, i get steady results but they are vastly wrong as i should get close to zero:
----------
37769.7175
37755.5050
-14.212497
----------
37782.4310
37767.8871
-14.543876
----------
37782.2506
37767.808
-14.442339
----------
37782.3983
37767.7668
-14.631496
----------
37782.3033
37767.8707
-14.432544
What can i do to solve this issue? My circuit is the same as in the TDC1000-TDC7200EVM User’s Guide circuit using both TDC1000 and TDC7200. Will incorporating a TS3A44159 solve this?
thanks
