
Section 2: Description of SBE 11plus V2
7
Section 2: Description of SBE 11plus V2
This section describes the functions and features of the SBE 11plus V2
Deck Unit, as well as system communications.
System Description
The SBE 9plus CTD is used with the SBE 11plus V2 Deck Unit for real-time
data acquisition, or with the SBE 17plus V2 SEARAM for in-situ recording.
This manual covers the use of the 11plus V2 Deck Unit with the 9plus.
The rack-mountable Deck Unit supplies DC power to the CTD, decodes the
serial data stream, and passes the data to a computer (in IEEE-488 or RS-232
format). The Deck Unit’s back-panel switch permits operation from 120 or
240 VAC 50/60 Hz input power. The front panel provides numeric display of
frequency and voltage data via a thumbwheel switch and 8-digit LED readout.
Other features include:
•300 baud modem interface - provides power and real-time control for a
water sampler (SBE 32 Carousel, or G.O. 1015 or 1016 Rosette) or
remote serial output device. The modem permits water sampler control
through the Deck Unit or via SEASAVE software. Bottles may be fired
sequentially or (SBE 32 and G.O. 1016 only) in any order.
The interface must be installed in the Deck Unit and CTD.
Additional information:
¾SBE 32 Carousel - 911plus is compatible with full size
(SBE 32) and compact (SBE 32C) Carousel sizes.
¾G.O. 1015 - Deck Unit must also have optional 1015 control module.
•NMEA Interface that merges position data with the CTD data. The
NMEA Interface decodes messages that are output from navigation
devices supporting NMEA 0183 protocol. Decoded Latitude and
Longitude are appended to the CTD data stream in the Deck Unit, and are
passed to the computer for storage and display with the CTD data.
•A/D converter for a Surface PAR light sensor. The Deck Unit supplies
12 volts to power the sensor, and merges the PAR data with the CTD data.
•Tape recorder interface for recording the digital data stream on an
audiocassette recorder or VCR.
•Remote output. The Deck Unit provides two remote outputs -
¾Pressure frequency and pressure temperature, transmitted 24 times
per second, can be used to control a towed vehicle.
¾Any combination of temperature, conductivity, pressure, depth,
salinity, sound velocity, and altimeter height, in engineering units.
A limited set of these parameters can be displayed on an SBE 14
Remote Depth Readout or SBE 46 LCD Display Box.
•Audible alarm, which sounds based on data from the CTD pressure
sensor, data from a bottom contact switch connected to the CTD,
and/or data from an altimeter connected to the CTD.
•RS-232 Serial Data Uplink interface - provides RS-232 output from the
Deck Unit for data from a remote serial output device connected to the
CTD. The interface must also be installed in the CTD, and is included
in the CTD only if ordered with the option.
Note:
The RS-232 Serial Data Uplink
interface is standard on all Deck Units
with serial number 637 and higher;
however, the 300 baud modem
interface must also be installed in
the Deck Unit for the serial data
uplink to be operational. For older
units, the interface was included only if
the user ordered the Deck Unit with
the option.
Notes:
•When the 9plus CTD is used with
the 11plus V2 Deck Unit, the system
is often referred to as the 911plus.
•It is possible to use the SEARAM to
record 9plus data in memory at the
same time as 9plus data is
transmitted real-time through the
Deck Unit. This provides a data
back-up in case there are data
transmission problems over the sea
cable. See the 9plus manual for
wiring and deployment details.
Note:
The 300 baud modem interface, now
standard in both the Deck Unit and
CTD, was optional in Deck Units with
serial number 700 and lower and in
9plus CTDs with serial number 785
and lower.