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3.4
I/O Cable and AC Power Supply
Systems shipping after August 2002 include the new style I/O cable and the
48 VDC AC Power Adapter in place of the 24 VDC AC adapters. The AC
Power adapter converts AC power into 48 VDC output for the WorkHorse
input power. Increasing the input voltage to the ADCP from 24 VDC (stan-
dard AC adapter) to 48 VDC increases the transmitted power, and thus the
range of the ADCP.
NOTE. Transmitted power increases or decreases depending on the input
voltage. Higher voltage to the ADCP (within the voltage range of 20 to 60
VDC) will increase the transmitted power. The transmitted power is
increased 6 DB if you double the input voltage from 24 VDC to 48 VDC.
For a 300kHz WorkHorse ADCP, each additional DB will result in an
increase in range of one default depth cell.
The higher input voltage is sufficient to override the internal battery voltage
(i.e. the ADCP will draw all power from the AC adapter even if the battery
is installed and connected).
NOTE. This change is not applicable to Rio Grande and Mariner systems.
4
Conventions Used in Manuals
Conventions used in the WorkHorse manuals have been established to help
you learn how to use the WorkHorse quickly and easily.
Windows menu items are printed in bold: File menu, Collect Data. Items
that need to be typed by the user or keys to press will be shown as
key combination were joined with a plus sign (
and hold the first key while you press the second key. Words printed in ital-
ics include program names (BBTalk) and file names (default.txt).
Code or sample files are printed using a fixed font. Here is an example:
WorkHorse Broadband ADCP
RD INSTRUMENTS (c) 1997-2002
ALL RIGHTS RESERVED
Firmware Version 16.xx
>
You will find two other visual aids that help you: Notes and Cautions.
NOTE. This paragraph format indicates additional information that may
help you avoid problems or that should be considered in using the
described features.
CAUTION. This paragraph format warns the reader of hazardous
procedures (for example, activities that may cause loss of data or damage to
the ADCP).
P/N 957-6151-00 (August 2002)
WorkHorse Read This First
<F1>.
you would press
<ALT+F>),
If a
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