latency between signals

Wed, 16 Aug 2017 08:22:25 GMT

Hello,

I have two signals measured every second.

When Signal_1 is below a certain value Signal_2 should/will change; and i need to measure the latency between the two.

In the table below at 11:42:13 Signal_1 is dropping below (or equal) to 49.9 and Signal_2 is following 7 second later (at 11:42:20). Signal 2 can drop to 0 or to a lower value (and i should measure the difference absolute and percentage).

Later, at 11:42:33 Signal_1 is going up above 49.8 and Signal 2 is going up again, 22 seconds later at 11:42:55

I should also monitor if Signal 2 is moving erratically without Signal_1 to be changing around the 49.8 value.

	Time	Signal_1	Signal_2	Above 49.8	below 49.8	Latency
	11:42:04	50.0	10.9	11:42:04	-
	11:42:05	50.0	10.9	11:42:05	-
	11:42:08	50.0	10.9	11:42:08	-
	11:42:10	50.0	10.8	11:42:10	-
(A1)	11:42:13	49.8	10.8	-	11:42:13	7
	11:42:14	49.8	10.8	-	11:42:14
	11:42:15	49.8	10.8	-	11:42:15
	11:42:18	49.8	10.8	-	11:42:18
(A2)	11:42:20	49.8	0.0	-	11:42:20
	11:42:22	49.8	0.0	-	11:42:22
	11:42:24	49.8	0.0	-	11:42:24
	11:42:26	49.8	0.0	-	11:42:26
	11:42:28	49.8	0.0	-	11:42:28
	11:42:30	49.8	0.0	-	11:42:30
	11:42:32	49.8	0.0	-	11:42:32
(B1)	11:42:33	49.9	0.0	11:42:33	-	22
	11:42:34	49.9	0.0	11:42:34	-
	11:42:36	49.9	0.0	11:42:36	-
	11:42:39	49.9	0.0	11:42:39	-
	11:42:40	49.9	0.0	11:42:40	-
	11:42:42	49.9	0.0	11:42:42	-
	11:42:43	49.9	0.0	11:42:43	-
	11:42:46	49.9	0.0	11:42:46	-
	11:42:49	49.9	0.0	11:42:49	-
	11:42:52	49.9	0.0	11:42:52	-
(B2)	11:42:55	49.9	4.7	11:42:55	-
	11:42:56	49.9	4.7	11:42:56	-
	11:42:59	49.9	4.7	11:42:59	-
	11:43:02	49.9	4.7	11:43:02	-
	11:43:03	49.9	4.7	11:43:03	-
	11:43:05	49.9	5.2	11:43:05	-
	11:43:08	49.9	5.2	11:43:08	-
	11:43:10	49.9	5.2	11:43:10	-

thank you,

Alex

topic latency between signals in QlikView

latency between signals