Mocomtech CRS-300 operation manual Front Panel Vacuum Fluorescent Display VFD, Opening Screen

CRS-300 1:10 Redundancy Switch	Revision 16
Front Panel Operation	MN/CRS300.IOM

7.1.3 Front Panel Vacuum Fluorescent Display (VFD)

The Front Panel Vacuum Fluorescent Display (VFD) is an active display showing two lines of 24 characters each. It produces a blue light, the brightness of which can be controlled by the user.

Compared to a Liquid Crystal Display (LCD), it has greatly superior viewing characteristics and does not suffer problems of viewing angle or contrast.

On most menu displays, the User will observe a flashing solid block cursor, which blinks at a once-per-second rate. This indicates the currently selected item, digit, or field:

CONFIG: MANUAL AUTO[ON]

OPTIONS REMOTE ACTIVE

Where this solid block cursor would obscure the item being edited (for example, a numeric field) the cursor will automatically change to an underline cursor:

ACTIVE MODEMS: (ENTER) 1 2 3 – 5 6 – 8 - 10

If the User were to display the same screen for weeks at a time, the display could become ‘burnt’ with this image. To prevent this, the unit has a ‘screen saver’ feature, which will activate after 1 hour. The top line of the display will show the Switch ID (which can be entered by the User) and the bottom line will show the current status of the Switch, followed by ‘Press any key...’:

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Press any key...

The message moves from right to left across the display, then wraps around. Pressing any key restores the previous display.

7.1.4 Opening Screen

COMTECH CRS-300 SWITCH

FOR CDM-XXX MODEM VX.XX

A ‘welcome screen’ similar to what is pictured here displays whenever power is first applied to the unit. Pressing any key takes the User to the top-level SELECT: menu.

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