Manual revision 001
Section 4: Deploying and Operating SBE 39
plus
-IM
SBE 39
plus
-IM
39
Combo Sampling
Combo Sampling combines Autonomous Sampling with the ability to
periodically retrieve the last stored data sample from each 39
plus
-IM, to allow
the user to look at some data without stopping the sampling. As in
Autonomous Sampling, at pre-programmed intervals the 39
plus
-IM wakes up,
samples data and stores it in its FLASH memory, and goes to sleep (enters
quiescent state).
When desired, the user can use
GData
to request the last data sample from
FLASH memory from all IM instruments online. Each 39
plus
-IM gets the data
from the FLASH memory and holds the data in a buffer. The user can then
request the data from the buffer of a particular 39
plus
-IM.
Example: Combo Sampling
for mooring with two 39
plus
-IMs (user input in bold)
Send wakeup tone to all IM instruments. For all instruments in Group 0 (all instruments with an integrated IMM are automatically
in Group 0): Set current date and time to May 1, 2016 12:00:00, initialize logging to overwrite previous data in memory, set up to
send data in converted decimal format and include temperature (°C) and pressure (dbar), take samples every 10 sec, set character
string for
GData
to
SL
, start logging May 2, 2016 12:00:00. After all parameters are entered, verify setup for each 39
plus
-IM.
Send power-off command to all IM instruments – 39
plus
-IM automatically wakes up and powers down for each sample.
(Select
Connect
in SeatermIM’s Communications menu to connect and wake up all IM instruments.)
#G0:DATETIME=05012016090000
#G0:OUTPUTFORMAT=1
#G0:OUTPUTTEMP=y
#G0:SETTEMPUNITS=0
#G0:OUTPUTPRESS=y
#G0:SETPRESSUNITS=0
#G0:SAMPLEINTERVAL=10
!G0:SETGDATASTR=SL
#G0:STARTDATETIME=05022016120000
#G0:STARTLATER
#01GETCD
(to verify setup of 39
plus
-IM 01)
#02GETCD
(to verify setup of 39
plus
-IM 02)
#01GETSD
(to verify status is
waiting to start logging
for 39
plus
-IM 01)
#02GETSD
(to verify status is
waiting to start logging
for 39
plus
-IM 02)
PWROFF
39
plus
-IMs start logging at programmed date and time. After logging begins, look at data from last sample to check results:
(Select
Connect
in SeatermIM’s Communications menu to connect and wake up all IM instruments.)
GDATA
(sends
SL
to all 39
plus
-IMs; each 39
plus
-IM holds data in buffer)
!01DATA
(retrieves data from buffer of 39
plus
-IM 01)
!02DATA
(retrieves data from buffer of 39
plus
-IM 02)
PWROFF
When ready to upload data to computer, wake up all IM instruments, stop sampling, and upload data. Send power-off command.
**
(Select
Connect
in SeatermIM’s Communications menu to connect and wake up all IM instruments.)
#01STOP
(Click Upload menu– SeatermIM leads you through screens to define data to be uploaded and where to store it.)
(repeat
#iiSTOP
through Upload for 39
plus
-IM 02)
PWROFF
** Alternatively, upload data from each instrument in lab via internal USB connector for faster upload.
