Installation guide

AXISQ7920Chassis
Pinassignments
PinAssignmentsforRS485Connector-AXISQ7900andAXISQ7920
Chassis
PinFunctionDescription
1
Channel1,RS485A
2
Channel1,RS485B
3
Channel2,RS485A
4
Channel2,RS485B
5
Channel3,RS485A
6
Channel3,RS485B
7
Channel4,RS485A
8
Channel4,RS485B
9
Channel5,RS485A
10
Channel5,RS485B
11
Channel6,RS485A
12
Channel6,RS485B
Ahalf-duplexRS485interfacefor
controllingauxiliaryequipmentsuchas
PTZdevices.
ThistableisfortheAXISQ7436blade.IfusinganotherbladeinAXISQ7920seetheInstallation
Guideforthespecicproduct.
PinassignmentsfortheI/OConnectoroftheAXISQ7900andAXISQ7920
Chassis
PinFunctionDescription
1
Channel1,Congurable
I/O1
2
Channel2,Congurable
I/O1
3
Channel3,Congurable
I/O1
4
Channel4,Congurable
I/O1
Digitalinput-ConnecttoGND
toactivate,orleaveoating(or
unconnected)todeactivate.
Digitaloutput-Usesanopen
drainNFETtransistorwiththe
sourceconnectedtoGND.If
usedwithanexternalrelay,
adiodemustbeconnected
inparallelwiththeload,for
protectionagainstvoltage
transients.
Mininput=–40VDC
Maxinput=+40VDC
Maxload=100mA
Maxvoltage=+40VDC
(tothetransistor)
13
ENGLISH