Chapter 6: Operation
6. Operation
6.1 LED Indicators
Hardened Serial Servers have LED indicators for Power, Serial Server Ready, Ethernet Speed and Link status, and Serial Port status. Figures
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Figure 6-1. Front and top panels of the LES421A.
Table 6-1. LEDs and switches on the LES421A serial server.
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LED Indicator | Description | |||
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1 | (1) | Serial Port LED (P1) | The serial port has an associated LED. The Serial Port LED flashes (green) when data is being transmitted | |
or received on the serial ports. When the LED is illuminated, it indicates the serial port is open. | ||||
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| The Ready LED (green) illuminates continuously while the unit is initializing. It flashes once per second | |
2 | (1) | Ready LED | when the system is operating correctly. If the LED is not flashing, it indicates that something is wrong | |
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| (e.g., another device on the network at the same IP address). | |
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3 | (1) | Ethernet Link LED | Lights when a connection is made. | |
Flashes when there is data traffic on the Ethernet link. | ||||
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4 | (1) | Reset switch | A recessed momentary Reset switch is located on the side of the enclosure. To activate the switch, | |
insert a small plastic tool through the hole in the enclosure and press lightly. | ||||
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