Premier Mounts CDM-600 사용자 설명서

4–1 

The CDM-600 is constructed as a 1U high rack-mount chassis, which can be free-
standing. Rack handles at the front ease removal from and placement into a rack. Figure 
4-1 shows the front panel of the modem. 
 

 

The front panel contains the Vacuum Fluorescent Display (VFD), keypad, and eight LED 
indicators. The user enters data via the keypad, and messages are displayed on the VFD. 
The LEDs indicate, in a summary fashion, the status of the unit. 
 
The VFD is an active display showing 2 lines of 40 characters each. It produces a blue 
light with adjustable brightness. Viewing characteristics are superior to a Liquid Crystal 
Display (LCD), and do not suffer problems of viewing angle or contrast. 
 
The keypad comprises six individual keyswitches, mounted directly behind a fully sealed 
membrane overlay. They have a positive ‘click’ action, which provides tactile feedback. 
These six switches are identified as [

↑], [↓], [→], [←] arrows, ENTER and CLEAR. The 

functions of these keys are described in the ‘Front Panel Operation’ section. 
 
There are 8 LEDs on the front panel. The behavior of these LEDs is also described in the 
‘Front Panel Operation’ section.