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COMSPHERE 3900 Series Modems
3-2 September 1998 3910-A2-GN32-40
Model 3910 Diagnostic Control Panel
The diagnostic control panel (DCP) of the Model 3910 modem (Figure 3-1) contains status
indicators, pushbutton-type keys, an LCD, and speaker grill.
PWR ALRM
CTS TXD LSD RXD TEST
RATE
105
106
103
109
108 142
COMSPHERE 3910
496-14174-01
F1 F2
F3
SQRTS
DTR
104
DIAG
DIAL
Figure 3-1. Model 3910 DCP
Model 3911 Faceplate and Shared Diagnostic Control Panel (SDCP)
The shared diagnostic control panel (SDCP), Figure 3-2, is used to manage carrier-mounted
Model 3911 modems.
The faceplate of the Model 3911 contains status indicators that monitor the operation of the
modem. After the SDCP is connected to the modem, the Front Panel indicator of the selected
modem lights to show that the modem is connected.