Atec JDSU-ANT-5 - Manual (Page 6)

6
ANT-5 SDH ACCESS TESTER
SDH Operating Modes
– Terminated Mode
– In-line Monitor Mode
– Intrusive Thru Mode
SDH Output Signals
STM-0 signal consists of one VC-n container with
– Framed or unframed PDH test pattern
– Test pattern without stuffing bits (bulk signal to O.181)
STM-1 signal consists of one VC-n container with
– Framed or unframed PDH test pattern
– Test pattern without stuffing bits (bulk signal to O.181)
Content of nonselected containers
– STM-1 PRBS 2 11 -1 (framed/unframed as per selected container)
STM-4 signal consists of one VC-n container with
– Framed or unframed PDH test pattern
– Test pattern without stuffing bits (bulk signal to O.181)
– Three VC-4 containers each filled with a fixed
pattern of 11100110
STM-16 signal consists of VC-n containers with
– Framed or unframed PDH test pattern
– Test pattern without stuffing bits (bulk signal to O.181)
SDH Anomaly and Defect Insertion
Defect generation
Static ON/OFF
Anomaly generation
Single or at a continuous error ratio of 1x10 –n (where the range
of n is as indicated below)
Payload
Bit errors (TSEs) n = 2-9
Anomalies
B1, B3 n = 4-9
MS-REI n = 3-10
LP-REI, LP-BIP (except C4) n = 3-10
B2 n = 3-9
HP-REI n = 4-10
SDH Anomaly/Defect Burst Generation
Anomalies (injected in n consecutive frames every m
frames or seconds)
B1, B2, MS-REI, B3, HP-REI, LP-BIP, LP-REI
Defects
LOS, LOF, RS-TIM, MS-AIS, MS-RDI, AU-LOP, AU-AIS, HP-UNEQ,
HP-RDI, HP-TIM, HP-PLM,TU-LOP,
TU-AIS,TU-LOM, LP-UNEQ, LP-RDI, LP-TIM, LP-PLM, LP-RFI
SDH Error and Alarm Detection
Error types
B1, B2, B3, MS-REI, HP-REI, LP-REI,TSE, LP-BIP, PDH, FAS-45,
FAS-34, FAS-2, FAS-1.5, REI-45, CPBIT, EBIT-2, CRC-2, code
errors (2 Mbps, 45 Mbps),
HP-IEC, LP-IEC, HP-OEI, HP-TC-DIFF, HP-TC-REI
Alarm detection
All alarms are monitored and detected
simultaneously.
Alarm types
LOS, OOF, LOF, MS-AIS, MS-RDI, RS-TIM, AU-AIS, AU-LOP, AU-
NDF, HP-RDI, HP-UNEQ, HP-TIM,
HP-PLM,TU-AIS,TU-LOP,TU-LOM, LP-RDI, LP-PLM, LP-UNEQ,
LP-TIM, LSS, LP-RFI, PDH-AIS, PDH-RDI
Mappings (to ITU G.707)
The following mappings are provided as standard with the
instrument. (For the structure, see Figure 1.)
– C11 mapping (1.5 Mbps)
– C12 mapping (2 Mbps)
– C3 mapping (34, 45 Mbps)
– C4 mapping (140 Mbps)
Test Patterns
Test patterns may be generated and measured for any of
the provided bit rates either directly at the SDH interface or
within the STM-16/STM-4/STM-1 substructure.
PRBS: 2
11 -1, 2 20 -1, 2 23 -1, 2 31 -1, 2 11 -1 inv, 2 15 -1 inv,
2 20 -1 inv, 2 23 -1 inv, 2 31 -1 inv, QRSS20
User programmable word 16 bits
Overhead Evaluation and Generation
SOH and POH evaluation
Display of complete SOH and POH in hex, binary, and ASCII
formats.
Text decode of S and C bytes for the trace identifier.
J0 display of 16 byte ASCII sequence.
J1 and J2 display of 16 or 64 byte ASCII sequence.
SOH and POH generation
The content of all bytes, with the exception of A1/A2,
B1/B2/B3, and H1 to H4, is programmable with any byte.
– Selectable synchronization messages (S byte)
– Selectable signal labels (C byte)
– Trace identifier
– J0 programmable 1 byte hexadecimal or 16 byte
ASCII sequence with CRC
– J1 and J2 programmable 16 byte ASCII sequence
with CRC or 64 byte ASCII sequence
Pointer Analysis and Generation in
AU/TU
Pointer analysis
Current pointer values displayed
Displays counts of:
– Pointer increments and decrements, sum and difference
– New data flags (NDFs)
– Average deviation (in ppm) of AU and TU
User selectable recording of pointer events into the event
log.
Pointer generation
Generation of pointers by:
– Single pointer
INC or DEC or INC/DEC
Frame rate: 100 to 8000
Receive K-Byte Capture
Captures K1 and K2 bytes
Capture trigger criteria: user selectable
Tandem Connection Monitoring (TCM)
Monitoring
Analysis of N1 and N2 bytes
Monitoring/display of:
TC-IEC,TC-AIS,TC-REI,TC-OEI,TC-UNEQ, LTC,TC-AIS,TC-RDI,
TC-ODI,TC-REI
Online display of TCM access point identifier
TCM error measurement
Incoming B3/computed BIP comparison
Generation
Generation of N1 and N2 bytes
To create:
TC-IEC,TC-AIS,TC-REI,TC-RDI,TC-OEI,TC-ODI,TC-UNEQ
Signal Frequency Measurement
Receive signal frequency is displayed and deviation from
nominal shown in ppm.
Resolution 0.1 ppm
Technical
Specifications-SDH