Operation Using 8008 CDU
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2019 – Valeport Ltd
Function
Description
depth. Upon pressing key the statement "press any key when transducer is at
surface level" is revealed. Press any key. Tare value is automatically set.
SET FISH TIME
Pressing SET FISH TIME sets fish to surface unit time already pre-set. Press O.K.
key to set and return to previous menu.
CLR FISH MEM
Resets memory to zero. Press O.K. key to set and return to previous menu.
RUN
The user is presented with the option to select DIR, BOTH or LOG modes,
although only LOG mode will be available to logging only instruments. Select
DIR for direct reading, LOG for logging or BOTH for direct reading and logging,
using NEXT key. RUN key will set. It should be emphasised that selecting LOG
or BOTH sets the fish only to log data. If it is required that the CDU also logs
data, this must be set independently using the optional CDU MEMORY
function in the opening menu.
When in RUN mode, EXIT key will allow return to main menu.
PROFILE MODE
This mode is accessed by pressing the bottom left key (NOT the ON/OFF key)
in the RUN screen, but note that the key is not labelled. If a pressure sensor is
fitted to the instrument, this mode will display the pressure value only, updated
at 1-second intervals. This allows the user to raise or lower the instrument to
the required depth for profiling operations. Pressing the EXIT key in the Profile
screen returns the unit to the Run screen, and automatically begins sampling at
the preset rate.
DISPLAY
The display is updated every averaging period, and will show:
SPEED in m/s
TEMP [temperature] in Deg C
PR [pressure] in dBar
DIR [direction] in degrees
The additional parameters of Conductivity, Salinity, Density and Speed of
Sound are not available on the Model106, and no value will be displayed for
these. The time of the last reading will be shown in the top right hand corner
of the screen.
If the CDU logging facility is set, the record and file number will be displayed at
the top left hand corner of the screen.
If the fish is set to Log only mode, no data will be displayed on the screen
during Run.
CDU MEMORY
Pressing this key in the opening menu reveals the CDU LOGGING MENU, which
contains: FILE TABLE, LOGGING ON/OFF, MEMORY FREE, EXTRACT CDU DATA,
ERASE MEMORY, EXIT.
FILE TABLE
This key reveals a display showing the total number of files stored (maximum
100), the size of each file, the sample and averaging period of the data, and the
time/date of the first record in each file. A new file is created each time the
unit is set to Run. To move between files, use the NEXT and LAST keys. Press
EXIT to return to the previous menu.
LOGGING ON/OFF
As stated previously, this key toggles between logging on and off, for the CDU
only.