Installation
2.20
QS4 Technical Reference Manual
Table 2-6: RS485 (NT–A) Class A card terminal definitions
1
4
3
2
TB1
+ CH2 –
RS485
+ CH1 –
Terminal No.
Name
Description
TB1–1, –2
CH2+, CH2–
Connects to CH2+/– on the first remote annunciator on the Class
A RS485 riser.
TB1–3, –4
CH1+, CH1–
Connects to CH1+/– on the first remote annunciator on the Class
A RS485 riser.
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