Technical data

3Systemdescription
CamTel
svr
21
musthaveadurationofatleast500mstoallowforpositivedetectionby
thedeviceanddistinctionfrom"swishcontacts".
Error relay The device configuration allows designation of integrated relays as error
relays in order to report certain operating statesor malfunctions using dry
contacts.Thestatusoftheerrorrelaythenalwayscorrespondstothestatus
oftheErrorLEDonthefrontofCamTel
svr
:
■ ErrorifLEDon,thenerrorrelayenergised
■ Noerror,ifErrorLED off,thenerrorrelayde-energised
Examplesforpossibleerrorsreportedbyerrorrelay:
■ FaultyDSP
■ Faultyvideodecoder
■ Faultyclockmodule
Sabotage protection Theerrorrelayispulledinidle-noerror.Thereforetheerrorrelaycanbeused
assabotagedetector,asitautomatically fallsoffintheeventofpowerfailure
(e.g. caused by cut power lines). Depending on the error relay wiring, an
interruptionoftherelaylineitselfcanbe
reportedaswell.
Modem/null modem
Use 1. Connecting external dialup devices for remote connections to
CamControlunits.Usetheconnectingcableprovidedwiththedialup
adapter.
2. SerialdirectconnectiontoaCamControlunitwiththeprovidednull
modemcable.Thisconnectionmodeisrecommendedfor
commissioningandservice.
Configuration CamControl LITE or CamControl PRO software allow you to set the
connection speed for remote and direct connections. In addition, AT
commands can be entered for initialisation and dialling of external dialup
adapters,orfordefiningdialmode.Refertotherespective softwaremanual
formoreinformation.
Pin assignment for
RS-232 interface
Connectorendview/9pin
Sub-Dplug
Thereisa theoreticalpossibilitythat sabotageprotection will not workif
errorrelayswitchingisnotconsistentwiththeoperatingmode.
Pin Type Function
Code
designation
1 Input DataCarrierDetect DCD
2 Input ReceiveData RxD