Barry Broskowitz posted:Dave,
I recently had a conversation with Jason, and he said the watchdog signal is only present less than a second. Was he mistaken?
I communicated with Jason a little while ago and it turns out that we were both mistaken, and that the issuing of the watchdog signal is a little more complicated than one might suspect.
The watchdog signal is a command that is sent repeatedly when a channel output goes from zero to some other voltage, until one of the following occurs:
- 44 seconds elapses (this may have been stated to you by Jason as 1/2 a minute or less than 1/2 a minute). Note that this duration is subject to change in future DCS release if the number of data packets in the command changes the time required to send the command there requisite number of times.
- Another command, such as Startup, is issued on that channel.
The way I intend to state the duration of the watchdog signal going forward is:
"The watchdog signal persists for the lesser of 44 seconds or until a command is issued on that TIU channel."
That pretty much sums it up.
I was just getting ready to post this question..had some pre draft text ready. The DCS knowledge on this forum is incredible
