User's Manual

Confidential&Proprietary44/122 SC‐DAS
4.3.5  OEUfront/rearpaneloverview
1) Frontpanel
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Figure4.28–OEUfrontpanelview
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Item Description
1.EWDMLED LEDindicatortocheckEWDMstatetoseeifitisabnormal
2.DOULED LEDindicatortocheckDOUmodulestatetoseeifitisabnormal
3.SystemLEDandReset
Communication state with devices, alarm status of the system and reset
switch
4.NMS(USBPort)
USB port for communication and diagnosis of devices through PC/laptop.
Thisequipment isforindooruseonly andallthecommunicationwirings are
limitedtoindooruseaswell.
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2)Rearpanel
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Figure4.29–Rearpanelview
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Item Description
1.GNDPort Terminalforsystemground
2.DCInputPort InputterminalforDC‐48V
3.powerswitch PowerON/OFFswitch
4.To/FromODUOpticPort SC/APCopticalconnectorterminal
5.To/FromROUOpticPort SC/APCopticalconnectorterminal;useoneopticalcableperROU.