Alpha Technologies XP-EDH4 - Installation - Manual (Page 8)

4.0 Verifying Installation and Network Connectivity (applies to all power supplies)
After connecting the transponder, any of the three following methods may be used to verify the installation and
network connectivity.
4.1 LED Indications
The EDH4 transponder has bank of 6 green LEDs on the front panel. The state
(whether each LED is ON, OFF, or blinking) of each LED indicates its operational
functionality as indicated in the table below.
On initial power up, the LEDs will remain off for several seconds after which time
the DS, US, and Online LEDs will blink, in unison, 6 times. After this sequence
completes, the LEDs indicate the status. The PWR, DS, US, ONLINE, and
ELINK LEDs conform to the DOCSIS OSSI specification.
LED Function State Meaning
STAT Debug LED:Indicates the presence or absence of data transference
between the transponder’s two processors.
Off Data is not being transferred between the two processors.
Blinking Data is being transferred between the two processors.
ELINK CPE Link LED:Indicates status with respect to the bridging of data to
and from a CPE device connected to the transponder’s Ethernet port
Off A CPE device is not connected to the transponder’s Ethernet port.
Blinking The transponder is bridging data to/from a CPE device.
ONLINE Online LED:Indicates status with respect to the completion of the IP
initialization process and when the unit is operational.
Blinking The transponder is currently involved in the IP initialization process.
On The transponder has completed the IP initialization process and is operational.
US Upstream LED:Indicates status with respect to acquisition of upstream
parameters and initial ranging.
Blinking The transponder is obtaining upstream parameters and is performing initial
ranging.
On The transponder has completed a successful initial ranging sequence.
DS Downstream LED:Indicates status with respect to downstream
scanning and synchronization.
Blinking The transponder is scanning for a downstream DOCSIS channel.
On The transponder has locked onto and synchronized with a downstream
DOCSIS channel.
PWR Power LED:(Note: this LED is not tied directly to line power) Off The transponder is not powered or is not functioning.
On The transponder is on.
Table 4, LED Indications of System Status
745-419-C4-001 Rev. A (09/2009) 8
Figure 7, LED Array