CopperOptics 150-1253-01, Руководство пользователя

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Functional Description 150-512-100-03, Revision 03
6 September 25, 1998 HRU-512 List 1
Table 1. HRU-512 List 1 Front Panel Components
Name Function
Test points Allow the 60 mA I-CPE current option to be measured. The current
flowing is related to the voltage measured across the + and - test points
by the following relationship: CPE CURRENT = 1 mA/1 mV. Typical
readings range from 55 to 65 mV which equate to a 55 to 65 mA current
range.
Receive
(RCV) and
Transmit
(XMT) Access
Jacks Provides splitting and monitoring access to the CPE DS1 interface. See
Figure 2 for circuit details. The jacks are transformer isolated from the
CPE DS1 metallic interface.
Alarm LEDs REM LOS LED lights red to indicate a loss of signal (LOS) at the T1
input to the HLU.
LOC LOS LED lights red to indicates a loss of signal (LOS) at the T1
input to the HRU-512 List 1. This LOS condition transmits the AIS
pattern toward the D4 channel bank on the provisioned time slot only
(according to the user selected bandwidth). Non-provisioned time slots
are not affected.
Loopback
(LB) LEDs
NET LED lights green to indicate the HRU-512 List 1 is in a loopback
state where the signal from the network is looping back to the network.
CI LED lights yellow to indicate that the HRU-512 List 1 is in a loopback
state in which the signal from the Customer Interface (CI) is being
looped back to the CI (CLOC).
Code LEDs
B8ZS LED lights green to indicate that the user DS1 code option is set
to B8ZS.
AMI LED lights yellow to indicate that the user DS1 code option is set
to AMI.
BPV LED lights red to indicate that the user DS1 code option is set to
BPV.
If the user DS1 code option is set to AUTO, the LED is on to indicates
what DS1 signal is being received. These settings are made on the HLU.
Framing LEDs
ESF LED lights green to indicate that the framing pattern of the received
signal is Extended Super Frame (ESF).
SF LED lights yellow to indicate that the framing pattern of the received
signal is Super Frame (SF).
ERR LED lights red to indicate that a DS1 frame error has occurred.
No frame LED lights when the HRU-412 List 8 input pattern is unframed
or when the framing option is set to UNFR (unframed). Note that this
settings is made on the HLU.