Interlogix DVR 42 User Manual - Manual (Page 19)

TruVision DVR 42 User Manual 17
Figure 6: Star wiring with RS-485 signal distributor
Correct:
1. Keypad (KTD-405 keypad shown)
2. I/O box 3. RS-485 distributor
4. See section “RS-485 ports” on page 9
Incorrect:
1. Keypad (KTD-405 keypad shown)
2. I/O box 3. See section “RS-485 ports” on page 9
Use an RS-485 signal distributor to increase the maximum number of devices on
the bus as well as the total range. Each distributor output provides another RS-
485 bus, extending the output an additional 1200 m. Up to 31 TVR 42s can be
connected to each output. See Figure 7 on page 18.