Table of Contents
Advertisement
633/635
Users Manual
3-4.
Pattern Evaluation
The QuickBERT-T1 and QuickCHECK-T1 evaluate the data of the incoming
signal to determine if it matches one of the supported BERT patterns. The unit
supports QRSS, 1 IN 7, 2 IN 8, 3 IN 24, ALL 0'S, ALL 1'S, 1:1, NET55,
OCT55, DALY55, or USER (QuickBERT-T1 only). If one of these patterns is
detected, the corresponding Rx Pattern LED illuminates. If none of the patterns
are detected, all of the Rx Pattern LEDs will be off and the data is assumed to
be live traffic.
3-5.
Line Code Evaluation
The QuickBERT-T1 and QuickCHECK-T1 evaluate the data of the incoming
signal to determine the line coding: B8ZS or AMI. If B8ZS is detected, the
corresponding Rx Status LED will illuminate; otherwise, the AMI LED will
illuminate.
3-6. Evaluating Live Traffic
Use the following procedure to evaluate live traffic.
1.
Select a monitor point to perform the evaluation. The monitor point may
be "monitor" jacks on a CSU, NIU, or DSX jack field. The unit may also
be "bridged" across one side of the T1 line at any electrical access point.
2.
Select DSX MON, TERM, or BRDG (using the RX INPUT key) to
properly terminate the Rx T1 receiver. The DSX MON setting should be
selected if the chosen test point is provided with the 432-ohm isolation
resistors to isolate the test set from the T1 line (such as a DSX monitor
jack in a central office). The TERM setting should be selected for out-of-
service testing. The BRDG setting should be selected if the unit is to be
bridged across the T1 line (such as at a 66 block).
3.
Insert a bantam-ended test cord into the Rx T1 receiver on the
QuickBERT-T1 or QuickCHECK-T1.
4.
Connect the other end of the test cord to the selected access point
3-2
Hide quick links:
Advertisement
Table of Contents
