© Valeport Limited 2003
MIDAS Surveyor Operating Manual
Page 12
0420805d.doc
Once the system components have been connected together, the MIDAS Surveyor should be turned on by pressing the
“On” button on the display panel. “On” status will be indicated by a blue LED behind the On button. The display will
show an introduction screen giving the instrument serial number and version for about 10 seconds. The screen will then
immediately show Run mode (illustrated below).
Note that incoming data will be displayed at all times – there is no stop/go function, simply a logging on/off function.
The operating status of the instrument at switch on will depend on how it was previously turned off:
•
If a normal, controlled shutdown has been performed (by pressing the Off key), the MIDAS Surveyor will show data
on screen, but it will not be immediately recorded until the user instructs the instrument to do so.
•
If the instrument has had an uncontrolled shutdown (power failure, software or hardware reset), the instrument will
automatically revert to the status it was in before the shutdown. That is to say, if the instrument was not logging
data, then it will continue to not log the data. If the instrument was logging data, then it will continue to do so,
although it will begin a new data file.
4.1
RUN MODE
The basic Run screen is indicated above, and may be described as follows:
Bottom line of text
Function keys and warning messages:
F1 Log On/Off
F2 Echosounder Reset
F3 Fix Mark
F4 Pause/Continue Logging
Left side of screen
Graphical representation of bottom trace.
Top right of screen
Large numerical display of last depth reading
Bottom right of screen
Additional data input values
If the instrument is in Single Frequency mode, the left side of the screen will be filled with a single graphical trace, and
the top right of the screen will show a single large numerical depth figure.
If the instrument is in Dual Frequency mode (as above), the left side of the screen will show two graphical traces, and the
top right of the screen will show two large numerical depth figures. Note that the graph should be viewed as two
separate graphs, not as two traces on the same scale. In the above example, the top graph has a vertical scale from 15
to 20m, and stops halfway down the screen. The second graph begins halfway down the screen, also on a scale of 15 to
20m (15m point not labelled).
15
15
20
20
20
20
16.66
16.72
H
L
m
52
°
45' 57.502 N
3
°
54' 03.140 E
39.630 H
SVs: 7 HDOP: 2.1
corr: OK Age: 5.0
03:44:12
F1
|
F2
|
F3
|
F4
Echosounder
HF digital depth
Echosounder
LF digital depth
GPS position
in LAT/LONG/H
or East/North/H
Cyclic display
(status)
LF depth
profile
HF depth
profile
F-KEYS
