Quantum SNC 4000, Руководство пользователя

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8 Description
• 8 data bits
• No parity
• One stop-bit
• Hardware Flow Control or Xon/Xoff
LED Indicators
The interface panel of the SNC provides LEDs that indicate the status and activity of the SNC and its
interfaces.
Figure 2 LEDs
When the SNC is first turned on, some of the LEDs will be on and others will flash while it is booting.
The following list briefly describes how to interpret the LED signals. See also POST Error Codes on page
143.
FC
• For the FC channel, the LED will be OFF when the channel is not connected. It will be ON when the
channel is connected to a live FC device. It will flash when there is activity on the channel.
S1 and S2
• For each SCSI channel, the LED will be OFF when no devices have been detected on the port. It
will be ON when a target has been found on the channel. The LED will return to the OFF state if the
channel is reset.
PWR
• The PWR (Power) LED will be ON when the SNC has power. It will flash if the on-board power
sensors determine that any of the required supply voltages are out of range.
RDY
• The RDY (Ready) LED indicates status of Ready. Normally the RDY LED flashes when the SNC
has finished booting. If the RDY LED remains ON or OFF for more than a few seconds, it means
there is a problem.
• The RDY LED will flash rapidly, four times per second, when the SNC is running in diagnostic mode.
ERR
• The ERR (Error) LED indicates that an error condition exists. This may indicate such errors as over-
temperature conditions, fan stalled or other internally detected error conditions. See
POST Error
Codes on page 143.