GE Security Legend IP, Installation Manual

Page: 47 / 82

Chapter 3
Wiring and addressing the dome
39
Setting the termination
You must set the termination of the data signal in each dome (or device) to on or off. Only two of the four
switches (1 and 4) on the DIP are used (
Figure 17 ). Switches 2 and 3 are not used at this time, so it does not
matter whether they are set to on or off. MAIN is for the dome input and AUX is for an auxiliary device output.
The AUX connections are wired only if you want streaming position reporting or are using the Tyco/AD
(RS-422) protocol. To wire a Tyco/AD (RS-422) keypad to the dome, see
Upgrading Legend to Legend IP
<<<waiting for card info>>> on page 71. For details about streaming position reporting, see the Legend IP
User Manual (1055713).
To set the termination, see Figure 17 and do the following:
• Set the termination to ON if the dome or device is the final receiver location for the data signal.
• Set the termination to OFF if the data signal needs to loop out to other domes or devices.
Note: The switches are set to ON by default. You need to turn them OFF if you are looping the data signal.
Figure 17. Termination switches
I/C
6
I/C
O/C
---
+
0
5
1
6
2
7
3
8
4
9 0
5
1
6
2
7
3
8
4
9
B
3
F
7
D
5
1
9
C
4
0
8
E
6
2
A
B
F
D
1
9
C
0
8
E
A
1's 10's
OFF
ON
AUX MAIN
1 2 3 4
ON
OFF
ON
AUX MAIN
1 2 3 4
ON
Termination switches