Product specifications

CDM-710 Broadcast Satellite Modem Revision 10
Front Panel Operation MN/CDM710.IOM
5–4
5.1.3 Front Panel Vacuum Fluorescent Display (VFD)
The CDM-710 features a Vacuum Fluorescent
Display (VFD). The 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.
As shown above, the ‘welcome screen’ is displayed whenever power is first applied to the unit.
The top line identifies the unit model (i.e., CDM-710); the bottom line displays the CDM-710’s
installed Firmware Version (version number varies).
Pressing any key takes the User to the top-level Select menu. On most menu screens, Users will
see a flashing, solid-block cursor that blinks at a once-per-second rate. This indicates the
currently selected item, digit, or field:
CONFIG: Remote Tx Rx
Int1 Int2 Ref Aux Alarms
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:
Tx Freq: 0140.0000 MHz
(◄ ► ▲ ▼ ENTER)
To prevent the display from becoming burnt by a constant image, the unit employs a screen saver
feature, which activates after one hour and constantly scrolls and wraps a message across the
screen. The top line of the screen saver display shows the Circuit ID (which can be entered by the
User); the bottom line displays the message ‘Press any key…’ as shown:
Circuit ID: -------------
Press any key...
Press any key to restore the previously active screen.