Comtech EF Data CDM-710G Especificações Página 33

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CDM-710G High-Speed Satellite Modem Revision 1
Introduction MN-CDM710G
1–7
1.3.4 Physical Features
1.3.4.1 Front Panel
Figure 1-4. Front Panel View
Figure 1-4 shows the fro
nt panel of the CDM-710G High-Speed Satellite Modem. The front
panel features (from left) Light-Emitting-Diode (LED) indicators; a keypad; and a Vacuum
Fluorescent Display (VFD):
The eight (8) LEDs indicate, in a summary fashion, the status of the unit.
The keypad comprises six individual keyswitches. They have a positive ‘click’ action,
which provides tactile feedback. The user enters data via the keypad, and messages are
displayed on the VFD.
The VFD is an active display showing two lines of 24 characters each. It produces a blue
light with adjustable brightness. Compared to a Liquid Crystal Display (LCD), the VFD
has greatly superior viewing characteristics and does not suffer problems of viewing
angle or contrast.
The function and behavior of the LED indicators, keypad, and VFD is described in detail in
Chapter 6. FRONT PANEL OPERATION.
LED
Indicators
Keypad
Vacuum Fluorescent
Display (VFD)
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