NEXCOM NViS 2310 - Manual (Page 61)

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Appendix A: Software Demo Utility for I/O Ports of Function Control
NViS2310 User Manual
1.7 WWAN Module
1.7.1 Mini-PCIe CN27
Selects SIM2 or SIM3 card.
1.7.2 Mini-PCIe CN26
Selects SIM1 or SIM2 card.
1.8 Selection of RS-422 or RS-485 for COM3
Enables or disables the power on delay time function. There are 8 selections
of delay time.
1.9 Power Off Delay Time
Enables or disables the power off delay time function. There are 8 selections
of delay time.