Interlogix DVR 41 User Manual Bedienungsanleitung Seite 18

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1BChapter 2: Installation
12 TruVision DVR 41 User Manual
Figure 5: Expanding the system with an RS-485 signal distributor
1. Keypad
2. I/O box
3. RS-485 distributor
4. See section “RS-485 portsbelow
Caution: Most signal distributors are unidirectional. This means that the signal
only flows from the input towards the outputs. Consequently it is not possible to
connect several keypads.
See section “RS-485 portsbelow to configure the RS-485 port communication
settings.
RS-485 ports
There are two RS-485 ports on the back panel of the DVR. See Figure 6 on page
13 for the serial pin outs.
Dome RS-485:
A and B: Connect pan, tilt, zoom control of PTZ dome cameras. A = +, B = -
C and D: Not used
G: Ground of dome camera
G: Ground of keypad
Keyb: Connect the keypad.
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