Break - Teledyne WORKHORSE Operation Manual

May 2015

Break

Purpose Interrupts H-ADCP without erasing present settings.
Format <BREAK>
Recommended Setting. Use as needed.
Description A BREAK signal interrupts H-ADCP processing. It is leading-edge triggered and must last
at least 300 ms. A BREAK initializes the system, sends a wake-up (copyright) message,
and places the H-ADCP in the DATA I/O mode. The BREAK command does not erase any
settings or data. Using BBTalk, pressing the End key sends a BREAK.
Example <BREAK>
[BREAK Wakeup A]
WorkHorse Broadband H-ADCP Version 11.xx
Teledyne RD Instruments (c) 1996-2015
All Rights reserved.
>?
When you send a break the text inside the brackets '[...]' of the first line of the Wakeup Messages indicates
the H-ADCP's communication configuration:
• [BREAK Wakeup A] => H-ADCP is set to send/receive RS232 communication through the se-
rial lines of the I/O cable
•
[BREAK Wakeup B] => H-ADCP is set to send/receive RS432 communication through the se-
rial lines of the I/O cable.
• [BREAK Wakeup AB] => RS232/422 switch on the top of the PIO board in the H-ADCP is in
between two positions, but neither RS232 nor RS422. It can also mean that the H-ADCP received
a trigger pulse while in command mode.
• [ALARM Wakeup A] => When you send a break, if the input voltage has a low voltage reading
you will get the following message:
[ALARM Wakeup A]
WorkHorse Broadband H-ADCP Version 11.xx
Teledyne RD Instruments (c) 1996-2015
All Rights Reserved.
>
If this message appears after a break, it is advised not to deploy the H-ADCP since TRDI cannot
guarantee the unit will perform to the performance specifications.
Software Breaks - The H-ADCP will use the "= = =" string instead of a break. Soft breaks work when
the CL command is 1 or 0. When CL is 1, while you are in command mode the system will not sleep at
timeout; it will either start pinging or stay in the command mode depending upon what was happening
before the soft break. The system will only sleep if CL is 1 and it is between pings while deployed (not in
command mode), or if a CZ command is sent while in command mode.
Page 124
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
WorkHorse H-ADCP Operation Manual