SONET Tab
384
a. Select the desired
Item
row. The APS Decode dialog box appears
with the K1 and K2 byte values decoded.
b. You can scroll through the Items by selecting the
Prev
and
Next
buttons at the bottom of the APS Decode dialog box. Choose
Cancel
when finished.
To decode all K1/K2 byte values:
Select
APS Decode
.
The results table splits into two horizontal tables: the top table displaying K1
byte results; the bottom table displaying K2 byte results.
The K1 table decodes the values for bits 1-4 and bits 5-8. The K2 table
decodes the values for bits 1-4, bit 5, and bits 6-8.
Also displayed in the tables are the number of frames received that contain
the K1 and K2 bytes, and the elapsed time of the frames that contain the K1
and K2 bytes, for the last 15 byte sequences received.
Power Hot, Power Warm and Power Low Alarms
Pluggable laser modules that provide Digital Diagnostic information will inform the circuit
pack when the received optical power level has exceeded the module's Power Warm
and Power Hot thresholds.
The
Power Warm
alarm will begin to increment if the received optical power is within -
3dBm of the laser module's maximum receive power level threshold.
When
Power Warm
alarms are occurring, the
RX: <power level>
text, located below
the Laser On/Off button, will turn
Yellow
and the background will repeatedly between
Black and White, until the power level is reduced to a safe level.
Note
: This is just a warning, and continued operation while the Power Warm alarm is
incrementing will not cause permanent damage.
The
Power Hot
alarm will begin to increment if the received optical power exceeds the
laser module's maximum receive power level threshold.
When
Power Hot
alarms are occurring, the
RX: <power level>
text, located below
the Laser On/Off button, will turn
Red
and the background will repeatedly between
Black and White, until the power level is reduced to a safe level.
MPA_e_manual_D07-00-129P_RevA00
Summary of Contents for MPA
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