0 start-up and verification, 1 initial startup, 2 leds and system status – Alpha Technologies AlphaNet DSM Series DOCSIS User Manual
Page 51: Start-up and verification 9.1, Initial startup, Leds and system status, And verifying operation, Section 9.0
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745-814-B0-001, Rev. A
9.0 Start-up and Verification
9.1 Initial Startup
1. Plug the power supply into the AC outlet and turn on the battery breaker.
2. The XP-DSM LEDs blink three times and the RDY light begins blinking on and off.
3. Verify no alarms are active.
4. Verify the DS and REG LEDs are on solid (this verifies successful network registration).
5. Verify LNK LED is blinking if in Single IP Mode and on solid if in Dual IP Mode.
9.2 LEDs and System Status
The XP-DSM has six LEDs that indicate system status. During system startup, the
LEDs blink momentarily. The Status LEDs indicate alarms, status of the XP-DSM, and
communications and activity with the network. A description of each LED follows.
ALM – HMS Major and Minor Alarm
The ALM LED is the only red LED. It provides a visual alert for power supply discrete major
and minor alarms, as defined in the discrete property tables of the SCTE HMS MIB. Refer to
for information on configuring the XP-DSM for active monitoring and alarming.
If an event triggers an HMS alarm, the ALM LED blinks according to the alarm type until the
alarm has been resolved. If there are multiple active alarms, including one or more major
alarms with one or more minor alarms, the major alarm will take precedent in terms of the
LED indication.
RDY – Micro-controller Status and Write to Non-volatile Memory
During normal operation, the RDY LED blinks steadily, indicating a heartbeat pulse from the
processor.
COM – Alpha Bus, or Local port Receive
The COM LED indicates any RS-232 and RS-485 traffic being received by the XP-DSM
through the Com port or Local port. When using the Local port, the light blinks for every
character typed, as the transistor-to-transistor logic (TTL) accepts each character. This LED
will also blink with one to three blinks approximately every 10 seconds, which indicates
communication exists between the XP-DSM card and other connected devices, such as a
generator or additional XM2.
LNK – Network Communication Status
For single IP applications the LNK LED blinks. For dual IP applications, the LNK LED is on
solid, and indicates network health.
NOTE:
A solid registration LED indicates registration with the CMTS. Use this indicator to confirm the communication
with the headend. It might take several minutes for communication to be established.