YSI SonTek ADVField User Manual

SonTek/YSI
ADVField/Hydra Operation Manual (September 1, 2001) 1
Section 1. ADV Components, Terminology, and Sampling
1.1. ADV Components
SonTek Acoustic Doppler Velocimeter (ADV) systems can be of two types – “Field” systems or
“Lab” systems. This manual applies only to our ADVField systems. Throughout this manual, the
terms ADV and ADVField can be considered synonymous (unless specifically noted otherwise).
ADVField systems can be of three types – splash-proof, underwater, or autonomous (Hydra) sys-
tems. The hardware for these systems is composed of two main components: signal processing
hardware and probe hardware. Note: The term Hydra refers to an ADVField system that has a
recorder and optional sensors installed.
The signal processing hardware (Figure 1) can be contained in a splash-proof housing or an un-
derwater canister. The probe hardware (Figure 2 through Figure 6) can be of three basic types: a
16-MHz MicroADV probe, a 10-MHz ADV probe, or a 5-MHz ADVOcean probe.
1.1.1. Signal Processing Hardware
The signal processing hardware performs the signal generation and processing required for the
ADV to make velocity measurements. This includes generating the electrical signals that are
converted to acoustic energy at the transducers, digitizing the return signal, performing Doppler
processing to calculate velocity, and averaging samples together before data output.
Figure 1 shows two configurations of the ADVField signal processing hardware (also known as
the processor or processing module) – the splash-proof housing and the underwater canister.
The electronics are configured to operate at either 16 MHz, 10 MHz, or 5 MHz for use with ei-
ther a 16-MHz MicroADV probe, a 10-MHz ADV probe, or a 5-MHz ADVOcean probe, respec-
tively. Any probe of a given frequency can be used with a processing module of that frequency, if
the cables and connectors are compatible, and if the appropriate probe configuration has been
loaded into the processor.
Figure 1 – ADVField Processors
Underwater Caniste
r
DC Power, Serial
Communication
To probe
Serial Com-
munication
To probe
A
uxiliary I/O
DC Power
Auxiliary I/O
(optional)
Pressure re-
lease valve
Splash-Proof Housing
Note: Canister length
can be increased to
accommodate battery
packs for autonomous
deployments.
Power switch

YSI SonTek ADVField Specifications

General

Brand	YSI
Model	SonTek ADVField
Category	Measuring Instruments
Language	English