September
2017
Sentinel V SC and RT Operation Manual
Page 228
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Sync/Trigger Commands
The Teledyne RD Instruments Sleepy Sensor Synchronization (TRDIS
3
) protocol allows a Sentinel V RT
system to synchronize measurements with another ADCP or any other instrument that adheres to the
RDS
3
specification.
Available Sync/Trigger Commands
>s?
Available Commands:
SA 00 ------------------- Trigger events [0=After][0=Ping,1=Ensemble]
SM 0 -------------------- Trigger Mode [0=off,2=slave]
ST 60 ------------------- Trigger Timeout [seconds, 0 = no timeout]
S? ---------------------- Display S-Command Menu
SA – Trigger Events
Purpose
Sets the rough timing of the synchronization pulse.
Format
SAxy
Range
x = 0 [0=Before]
y = 0, 1 [0=Ping, 1=Ensemble]
Default
SA00
Recommended Setting. Special applications only.
This command has no effect unless SM = 2.
Description Use the SA command to set the rough timing of the synchronization pulse. The first param-
eter must be zero, since “sync before” is the only option. The second parameter sets the
event type (0 = ping, 1 = ensemble).
Table 30:
Synchronization Parameters
Parameter
Description
SA00
Send (wait for) pulse before a ping.
SA01
Send (wait for) pulse before ensemble.
SM – Trigger Mode
Purpose
Sets the RDS3 Mode.
Format
SMn
Range
n = 0 (Off), 2 (Slave)
Default
SM0
Recommended Setting. Special applications only.
