Table of Contents
Advertisement
2-6.
RESULTS Keys
These keys are used to scroll through the paired results parameters that appear
on the display screen. To go from one pair of results to the next, use the
RESULTS UP/DOWN keys (located to the right of the display screen).
BPV Error
Frame Err
T1
The five Error LEDs will illuminate solid if currently detecting an error and
will flash to indicate an error has previously been detected but is not currently
being detected (history). Sections 2-7 through 2-14 provide detailed
descriptions of the paired parameters.
2-7.
BPV Error/Frame Err
BPV Error
Frame Err
T1
BPV Error
The test set records a bipolar violation (BPV) if it detects a violation of the
alternate mark inversion (AMI) line-coding scheme (that is standard for T1
transmission). BPVs are recorded if the T1 signal is live traffic or a BERT
pattern. The red BPV ERR LED will illuminate solid to indicate a BPV error is
present and will flash to indicate a history of BPV errors.
Frame Err
The test set automatically synchronizes with D4, ESF, or SLC
When frame synchronization is achieved, the proper green Frame LED will
illuminate. The unit will now register any errors that occur in the framing bit
sequence (as defined for that particular framing format). Frame errors are
recorded if the T1 signal is live traffic or a BERT pattern. The red FRM ERR
RB
Int
RB
Int
Overview
2
Controls
0
0
CSU
abn06f.eps
0
0
CSU
abn07f.eps
¨
96 framing.
2-5
Advertisement
Table of Contents
