User`s guide

Bosch Security Systems | 2004-01
NetDVR | User s Guide | Introduction
9
Relay output (ALARM OUT):
Solid-state relay output, normally open
contacts. Max . 250VAC or 250VDC, 170mA.
Senso r Input:
Opto-coupler alarm sensor inputs. Internal
Pull-up to +5VDC
Input closed: No event
Input open: Event
Serial Communication:
RS-232: To communicate with external PTZ
controlled CCTV cameras. These
pins are for devices that comply
with RS-232C. Connect pins Rx, Tx
and G (ground).
RS-422: To communicate with external PTZ
controlled CCTV cameras that
satisfy RS-422 protocol, half-duplex.
It is connected to R+, R-, T+, and
T-.
RS-485: Alternative communication port
for BOSCH AutoDome versions
with RS485 port. Use T+ and T-
to make the two wire connection.
ALARM O
U
T
O1
+
-
O2
+
-
O3
+
-
O4
+
-
SENSOR
IN
S1
+
-
S2
+
-
S3
+
-
S4
+
-
SERIA
L
C
OMM
.
RS232
RX
TX
G
T-
RS422/4
85
R-
T+
R+
NetDVR.book Page 9 Wednesday, May 12, 2004 4:06 PM