page A – 10
FM-531HD / May 2013
A P P E N D I C E S
Example Schematic of General Purpose Inputs
* For personnel safety reasons a voltage in excess of 48VDC is NOT
recommended to be applied to the GPI interface.
Applied Voltage to GPI External Resistance
3.3 Volts
None
5.0 Volts
330 Ohms
6.0 Volts
470 Ohms
7.5 Volts
820 Ohms
10 Volts
1.3 kOhms
12 Volts
1.8 kOhms
15 Volts
2.4 kOhms
24 Volts
3.9 kOhms
30 Volts
5.1 kOhms
*48 Volts*
9.1 kOhms
Summary of Contents for FM-531 HD
Page 2: ...Technical Manual Wheatstone Corporation May 2013 FM HD Digital Audio Processor FM 531hd...
Page 122: ...page A 2 FM 531HD May 2013 A P P E N D I C E S Appendix A General Specifications A 3 Contents...
Page 128: ...page A 8 FM 531HD May 2013 A P P E N D I C E S Appendix B FM 531HD GPI Interface A 9 Contents...