Descriptions:

ALMINxx: Alarm input xx (1~16)

GND: common ground for alarm inputs

ALM_COMx: output relay x , contact root

ALM_NOx: output relay x , NO contact

ALM_NCx: output relay x , NC contact

ALMRST: Alarm reset, control input for alarm reset, for dry NO contact towards GND

DISKFULL: OC output contact for signal HDD full, switches to GND

REC_IN: Control contact for recording start

SPARE_IN / OUT: System error output. TTL-level 5VDC indicates "System Okay" status. The contact will switch to open state, if one (ore more) of below listed events appears:

a)HDD full (If overwrite mode in RECORD menu is set to STOP)

b)No HDD

c)Over-temperature HDD

d)Power Loss

e)Cooler fan fault

f)Video Loss

g)Record off

Output level:

HIGH (5 V DC): System okay

Open state: System error

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EverFocus EDR 810, EDR 410, EDSR 110, 920 instruction manual Descriptions