Installation
2.20 QS4 Technical Reference Manual
Table 2-6: RS485 (NT–A) Class A card terminal definitions
1432
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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