Display Contrast; Keyboard - Metrix GX1010 Notice De Fonctionnement

Change the basic generator parameters as described in the Main Generator Operation
section and switch the MAIN OUT on with the OUTPUT key; the ON lamp will light to show
that the output is on. Note that AUX OUT, CLOCK OUT, etc. are always running and are
not switched by the OUTPUT key.

4.1.3. Display Contrast

All parameter settings are displayed on the 20 character x 4 row backlit liquid crystal
display (LCD). The contrast may vary a little with changes of ambient temperature or
viewing angle but can be optimised for a particular environment by using the front panel
contrast control. Insert a small screwdriver or trimmer tool through the adjustment aperture
marked LCD and rotate the control for optimum contrast.

4.1.4. Keyboard

The keys can be considered in 7 groups:
• FUNCTION keys permit direct selection of the waveform function. Repeated presses of
each of the 3 keys steps the function selection through each of the 2 or 3 choices
associated with that key; the current selection is indicated by the illuminated lamp.
Pressing a different key selects the function last selected with that key. In this way it is
therefore possible to select between, for example, sine, square and triangle with single
key presses, or between positive pulses and negative pulses, etc.
• SET keys permit direct selection of the four main generator parameters shown on the
Main menu of the display, ready for value entries from the NUMERIC/UNIT keys.
• NUMERIC/UNIT keys permit direct entry of a value for the parameter currently selected;
parameter selection is either directly (by the SET keys) for the main parameters, or by
moving the cursor to the appropriate parameter in other menus. Thus to set a new
frequency of 100kHz, for example press FREQ/PER, 1, 0, 0, kHz; or to change
symmetry to 40%, press SYMMETRY, 4, 0, %.
• FIELD and DIGIT keys are used, together with the ROTARY CONTROL, to edit
parameters on the current menu. Their use is explained more fully in the 'Principles of
Editing' section below.
• MODE keys are used both to directly switch the respective mode (TRIG, GATE, AM,
etc.) on or off and to select the menus for setting up these special functions. Alternate
presses of a MODE key will turn the function on or off; when on the associated lamp is
lit. Pressing the blue EDIT key followed by a MODE key displays the edit menu for that
mode; the associated lamp flashes whilst the edit menu is displayed.
• UTILITIES keys give access to the STORE, RECALL and Interface parameter menus;
the MAN/SYNC key is used for manual triggering and synchronising two or more
generators when suitably connected together.
• Lastly, the CONFIRM, ESCAPE, and CE (Clear Entry) keys have self-explanatory
functions.
Numeric entries are automatically confirmed when the appropriate unit key (Hz, kHz, MHz,
etc.) is pressed but CONFIRM can be used to enter a number in the parameter's basic
units or to confirm entries with fixed units (e.g. phase) or no units (e.g. burst count). It is
also used to confirm certain options when prompted.
Pressing ESCAPE returns a setting being edited to its last value; a second press (when
appropriate) will return the display from an edit menu to the Main menu.
CE (Clear Entry) undoes a numeric entry digit by digit.
Further explanations will be found as appropriate in the detailed descriptions of the
generator's functions.
10 - II GX1010