ADC HiGain HRU-402 Manual page 18

Product Description
Table 3. Status LED Descriptions (Continued)
LED Status
DS-1 Code LEDs
(B8ZS and AMI)
B8ZS LED = Solid
green
(DS-1 Code
Option=B8ZS)
B8ZS LED = Solid
green
(DS-1 Code
(b)
Option=Auto
AMI LED = Solid
green
(DS-1 Code
Option=AMI)
AMI LED = Solid
green
(DS-1 Code
Option=Auto
Loopback (LPBK)
LED
Solid yellow Indicates Network Remote Loopback (NREM), SMJK, or TLOS.
Blinking 1 per second Indicates Customer Local Loopback (CLOC) loopback state.
Blinking 4 per second Indicates the HRU is in an ARMED state.
(a) If DS-1 signals are not detected, the ESF, SF, Bipolar with 8-Zero Substitution
and Alternate Mark Inversion (AMI) LEDs will not light.
(b) Auto DS-1 code option not available when attached to a HLU-231 L8D, HLU-319 L5D,
or HLU-388 L5D.
10
Indicates
Indications for DS-1 code options.
Indicates that the DS-1 line code option is set to B8ZS. The light
blinks one time per second when a string of excessive zeros is
detected.
Indicates the DS-1 line code is being detected as B8ZS.
)
Indicates that the user DS-1 line code option is set to AMI. The
solid green light does not indicate the actual DS-1 line code being
received, which may be Alternate Mark Inversion (AMI) or B8ZS.
This light blinks one time per second when a Bipolar Violation
(BPV) is detected.
Indicates the DS-1 line code is being detected as AMI.
(b)
)
Shows loopback states to and from the network and to and from
the Customer Interface (CI) and an ARMED condition.
December 8, 1998
150-402-111-02
(a)
HRU-402 List 1A
(
B8ZS)