VeEX UX400, User Manual

Page: 163 / 209

frames however the actual rate should be slower. The Administrative Unit (AU) and the Tributary Unit (TU) each has its own pointer and the unit has two tabs for displaying
the values and measurements.
For STS pointers:
SS bits – displays bits 5 and 6 of the H1 byte to indicate SONET [10], SONET [00], Unknown [01] and [11] signal type
Pointer value – displays the H1 and H2 values (addresses) indicating the offset in bytes between the pointer and first byte of the STS-n
LOP (Loss of Pointer)
PJE and NJE
NDF or New Data Flag. NDF is enabled when all bits match "1001" (or "0001", "1101", "1011" and "1000") and is disabled when all bits match "0110" (or
"1110", "0010", "0100", "0111").
Difference and Sum
For TV pointers:
Pointer value
LOP (Loss of Pointer)
PJE and NJE
NDF or New Data Flags
Difference and Sum
Pointer Tasks - Analysis STS Pointer Tasks - Analysis VT
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7.4.3.2 Pointer Generator
The Pointer generator is able to generate individual pointer movements as follows:
For STS pointers:
SS bits: Program bits 5 and 6 of the H1 byte to be either SONET [10], SONET [00], Unknown [01] or [11].
Pointer value: Transmits a new pointer address or value with or without a new data flag (NDF). Configurable in a range of 0 to 782 pointers.
Increment (INC) or Decrement (DEC) pointers with identical polarity by 1 byte in single steps.
For VT pointers
VT Pointer value: Set value in a range of 0 to 109 (VT-1.5) and 0 to 139 (VT-2)
Increment (INC) or Decrement (DEC) pointer value by 1 byte is single steps
Generator > STS tab
UX400 10G e-Manual D07-00-058P RevA00 Page 163 of 209