All 0'S; All 1'S; Net55 - Fluke 635 User Manual

2-45. 1 IN 7
This pattern is a sequence of a one and seven zeros in the following form: 0100
0000. The maximum number of sequential zeros is eight, when transmitted
framed, and seven when transmitted unframed. This pattern is useful when
testing for mis-optioned AMI/B8ZS equipment.
2-46. 2 IN 8
This pattern is a sequence of two ones in eight bits in the following form: 0100
1000. The maximum number of sequential zeros is four, either framed or
unframed. This pattern is used to verify error-free transmission in B8ZS-
optioned systems.
2-47. 3 IN 24
This pattern is a sequence of three ones in 24 bits in the following form: 0100
0100 0000 0000 0000 0100. The maximum number of sequential zeros is 15.
This pattern is used to stress timing recovery in AMI-optioned systems.

2-48. ALL 0'S

This pattern is a sequence of all zeros. This pattern is useful for testing B8ZS
circuits.

2-49. ALL 1'S

This pattern is a sequence of all ones. "All ones" require the maximum power
to regenerate. This pattern is used to make loss measurements of the DS1
signal.
2-50. 1:1
This pattern is a sequence of alternating ones and zeros.

2-51. NET55

This pattern is a repeating pattern of 55 bytes according to the following
hexadecimal sequence.
01 01 03 01 01 01 00 01
01 01 01 55 55 55 55 AA
FF FF FF 80 01 80 01 80
This pattern creates a variety of stress on the circuits. Some service providers
require end-to-end testing using the 55 patterns.
01 01 01 01 01 03 01 01
AA AA AA 01 01 01 01 01
01 80 01 80 01 80 01
Overview
2
Controls
01 01 07 01
01 FF FF FF
2-19