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INNCOM B574 Datasheet

   

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Reserved for future use  

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12VDC Input 

11.75 

12.25 

11.75 

Ethernet Connectivity 

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Signal and power for Power over 
Ethernet Module  

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The following table describes the function of the indicator LEDs on the B574 PCBA.  

•  Flash on power-up to indicate proper hardware initialization. 

•  Steady on to indicate no connectivity to B573 floor bridge (see Figure 7). 

•  Flashes fast to indicate a valid CIS connection. 

•  Flashes slow to indicate 75 seconds have passed with no packets from the 

CIS network. 

•  Toggles when RF Rx tunnel packet is received 

The B574 and PC-803 are available in several operating ranges but are based on the same 
fundamental hardware platform (see Ordering Notes below). The ordering part numbers (OPN) are 

formed by a combination of the elements, as shown in Figure 7 below.