Chapter4HardwareBoard
TABLE6FUNCTIONDESCRIPTIONOFLEDS
LEDs
StateDescription
RUN
Off:interfaceboardofcorrespondinglineis
faultyoroff-position
Flash:interfaceboardofcorrespondinglineis
workingnormally
1~12
ALM
Off:interfaceboardofcorrespondingline
alarmisclearedorisoff-position
On:correspondinglineinterfacecardalarms
RUN
Off:correspondingpowermoduleisfaultyor
off-position
On:correspondingpowermoduleisworking
normally
PWR1~3
ALM
Off:correspondingpowermodulealarmis
clearedorisoff-position
On:correspondingpowermodulealarms
RUN
Off:controlswitchingboardisfaulty
Flash:controlswitchingboardisworking
normally
MST
ALM
Off:controlswitchingboardalarmiscleared
On:controlswitchingboardalarms
RUN
On:boardisinactivestatus
Off:boardisinstandbystatus
RES
ALM
On:active/standbystatusisabnormal
Off:active/standbystatusisnormal
ACT(SDinterface)Flash:SDcardispluggedintheinterface
ACT
Flash:datatransmissionandreceptioninthe
interface
LINK
On:interfacelinkiscreated
Off:interfaceisdisconnectedfromothers
ButtonsTherearetwobuttonsonfrontpanelofthecontrolswitching
board.FunctionsaredescribedinT able7.
TABLE7FUNCTIONDESCRIPTIONOFBUTTONS
Buttons
Function
RST
Boardresetbutton:toresettheboard
EXCH
Boardswitchoverbutton:switchthecontrol
switchingboardtostandbystate.Ifthisbutton
ispressedinthestandbyboard,systemstops
performinganyoperation
ConīædentialandProprietaryInformationofZTECORPORATION25