ADTRAN 1247026L1, Руководство по установке и обслуживанию

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HDSL T200 HTU-R, Span Powered, 60 mA Installation and Maintenance Practice
8 61247026L1-5A
3. Align the T200 HTU-R, SP/60 mA edges to fit in the lower and upper guide grooves for the
module slot.
4. Slide the T200 HTU-R, SP/60 mA into the module slot. Simultaneous thumb pressure at the
top (above the
DSL 1
LED) and at the bottom (below the electrostatic caution symbol) of the
T200 HTU-R, SP/60 mA will ensure that it is firmly positioned against the backplane of the
chassis.
When the T200 HTU-R, SP/60 mA first powers up it runs the power up self-tests. Once the
power up self-tests are complete, the status LEDs reflect the true state of the hardware.
Front Panel LEDs
The T200 HTU-R, SP/60 mA provides front panel LEDs to display status information. The T200
HTU-R, SP/60 mA LEDs and status descriptions are shown in
Table 5 .
Table 5. Front Panel LEDs
Label Status Description
DSL 1/DSL 2
{
z
z
z
5
Off
Green
Yellow
Red
Flashing No synchronization
Good signal quality (
> 4
)
Marginal signal quality (1 to 3)
Poor signal quality (0)
Error detected at HTU-C or HTU-R. The color, when flashing,
indicates loop signal quality, as shown above.
DS1
{
z
2
Off
Green
Green Flashing
DS1 signal not detected from customer or format does not
matching HDSL circuit provisioning
DS1 signal is present and synchronized with the HTU-C interface
Bipolar violation (BPV), frame bit error (SF mode) or CRC error
(ESF mode) detected
ALM
{
z
z
Off
Yellow
Red No alarm conditions exist
Remote alarm condition detected (HTU-C)
Local alarm condition (HTU-R) detected
ESF/
SF
{
z
z
Off
Green
Yellow Unframed mode
T200 HTU-R, SP/60 mA is receiving SF data
T200 HTU-R, SP/60 mA is receiving ESF data
B8ZS/AMI
z
z
Green
Yellow DS1 is provisioned for AMI line coding
DS1 is provisioned for B8ZS line coding
LLB/RLB {
z
z
2
Off
Green
Yellow
Yellow Flashing
Not in loopback or armed state
Active remote bidirectional loopback from the HTU-C toward the
customer and the network
Active local bidirectional loopback from the T200 HTU-R, SP/60
mA toward the customer and the network
Unit armed but not in a active loopback