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Appendix G: Peripherals
Galaxy Flex Installer Manual
224
RIO outputs
The RIO has four transistorised outputs (Table 11). Each output is connected to +12 V via a
3.3 k
Ω
pull-up resistor. When an output is activated, the load is switched to the negative
supply voltage (ground or 0 V).
The default functions and pull-up resistors are shown below:
Output
Function
Pull-up resistor
1
Bells
R1
2
Strobe
R3
3
PA
R5
4
Reset
R7
Table 11 RIO output default functions
Specification
Width:
160mm
6 ¼”
Height:
151mm
6”
Depth:
40mm
1 ½”
Weight: (approx.)
300g
11oz
Humidity
0-85%
Nominal Supply voltage
12V DC
Current : Nominal
30mA
Current : Maximum
590mA
Max output current (max
combined load through all
switched outputs)
560mA
Max switched sink current via
outputs:
Output
400mA
Output 2, 3 & 4
100mA