Speco Technologies DVR-T4IP - Manual (Page 117)

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5.2 Terminal Information
5.2.1 DSUB-9P (RS-232)
1 5
6 9
No Name Description
2 RXD Receive Data
3 TXD Transmit Data
5 GND Signal Ground
5.2.2 DSUB-15P (PTZ / AUX / ALARM / SENSOR)
1 8
9 15
No Name Description No Name Description
1 RS-485+ RS-485 Transmit Data + 9 Alarm Out Alarm Out (NO)
2 RS-485- RS-485 Transmit Data - 10 Alarm Out Alarm Out (COM)
3 AUX1 11 Alarm Out Alarm Out (NC)
4 AUX2
Auxiliary In Port
(RSI, ARI, RONOFFI)* 12 Sensor1
5 AUX3 13 Sensor2
6 AUX4 14 Sensor3
7 AUX5
Auxiliary Out Port
(ARO, RSTO, ERRO,
DFO, RSO)*
15 Sensor4
NO/NC
8 GND Signal Ground
* Abbreviation
RSI Record Start In RSTO Record Start Out
RI Alarm Reset In ERRO Error Out
RONOFFI Record On Off In DFO Disk Full Out
ARO Alarm Record Out RSO Record Status Out