© Valeport Limited 2003
MIDAS Surveyor Operating Manual
Page 19
0420805d.doc
4.2.6
DISPLAY SETUP
4.2.6.1
LCD delay
To conserve power, the user may set the LCD screen to shut down after a period of inactivity (i.e. no key presses). Use the
up and down keys to scroll through the desired interval, from 1 to 10 mins, or select “ON” for always on.
When in standby mode, the LCD screen will come back on when any key (except ON or OFF) is pressed.
Note that all other instrument activity (i.e. logging, data output) continues with the screen in standby mode.
4.2.6.2
Grid Lat/Long
Position data may be displayed and logged in either Latitude / Longitude format according to the chosen spheroid, or in
Eastings / Northings format according to a Local Grid projection. The detailed setup of the spheroid or grid is covered
under Geodetic Setup (section 4.2.8), but defaults are WGS84 and UTM.
To switch between displaying data in the currently programmed spheroid or grid, use the up/down keys to toggle
between LAT/LONG and EAST/NTH, using Enter to confirm. This function is not changeable whilst logging is turned ON.
4.2.6.3
Display Input Number
As a diagnostic tool, the full data input string from any single chosen parameter may be displayed across the bottom of
the screen. Use the up/down keys to scroll through the available options, and Enter to confirm:
Off
No input displayed
Port 1
External GPS input
Port 2
External digital echosounder input
Port 3
Sound Velocity Input
Port 4
Tide Input
Port 5
Heave Input
Port 6
Auxiliary (or Gyrocompass) Input
4.2.6.4
Contrast
The graphics LCD display has an adjustable contrast function. The user may wish to adjust this according to local
temperatures; as with all LCD’s, the display will tend to darken in high temperatures, and lighten in cool. This may be
done through the Menu by using the up and down keys to scroll up and down the contrast range, from 0 to 100%. Again
use Enter to confirm.
Alternatively, the Contrast button on the front panel will scroll up through the contrast range in slightly larger increments.
4.2.6.5
Back Light
The display also has an adjustable back light function for use in dim light conditions. Be aware that increasing the back
light intensity will have implications on power consumption.
Use the up and down keys to scroll up and down the back light range from 0 to 100%, using Enter to confirm.
Alternatively, the Light button on the front panel will scroll up through the light intensity range in slightly larger increments.
