Interlogix NVR 50 User Manual - Manual (Page 11)

1BChapter 2: Installation
TruVision NVR 50 User Manual 5
Figure 1: Back panel connections
1. Connect one CCTV monitor (BNC-type
connectors): Main monitor.
2. Connect one audio input to RCA
connectors.
3. Connect to a RS-232 device.
4. Connect to a network.
5. Connect to an optional eSATA device such
as SATA HDD, CD/DVD-RM.
6. Connect to a power cord.
7. Connect to speakers for audio output.
8. Connect to a VGA monitor.
9. Connect to an HDTV. The HDMI
connection supports both digital audio and
video.
10. Connect to an optional USB device such as
a mouse, CD/DVD burner or HDD.
11. Terminate the line to the dome cameras
using this RS-485 switch. Default is Off.
12. Connect to a PTZ control.
13. Connect to a keyboard (KTD-405 shown).
14. Connect up to 16 alarm input cables to
relay outputs.
15. Connect up to four alarm relay outputs.
16. Connect to ground.
Wiring the keypad
The keypad uses RS-485 simplex wiring. The signal is transferred by a single
twisted pair line. A shielded STP CAT5 network cable is recommended. Ground
one end of the cable, either the first or last device on the RS-485 line.
The maximum number of devices that can be installed in one bus is 255, with a
maximum cable length of 1200 m. The cable length can be expanded using a
signal distributor.
Both the first and the last device in series should be terminated with 120 Ohm
resistance to minimize line reflections. See Figure 2 below.