Atec Acterna-JDSU-ANT-20SE - Manual (Page 4)

Alarm generation, dynamic
Alarm types . . . . . . . . . . . . . . . . . . . . LOS, LOF, AIS-L, RDI-L, LOP-P,
AIS-P, UNEQ-P, PLM-P, RDI-P, RDIEPP,
RDIEPS, RDIEPC, PDI-P
m alarms in n frames . . . . . . . . . . . . . . . . . . m = 1 to n±1, n
max
= 8000
or
t1 alarm active,
t2 alarm passive . . . . . . . . . . . . . . . . . . . . . t1 = 0 to 60 s, t2 = 0 to 600 s
Alarm generation, static (on/off)
Alarm types . . . . . . . . . . . . . . . . . . . . LOS, LOF, AIS-L, TIM-L, RDI-L,
LOP-P, AIS-P, UNEQ-P, PLM-P, TIM-P,
RDI-P, RDIEPP, RDIEPS, RDIEPC, PDI-P
DS1, DS2 and DS3 output signals
Signal structures
± Unframed test pattern
± Framed test pattern (only DS1, DS3)
DS1 frame structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SF, ESF
DS3 frame structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M13, C parity
Error insertion
Bit errors in test pattern . . . . . . . . . . . . . . . . . . . .error rate, single error
BPV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . single error
DS1 F bit (LOF) . . . . . . . . . . . . . . . . . . single error, 2 in 4, 2 in 5, 2 in 6
CRC-6 (ESF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . single error, error rate
DS3 F bit (LOF) . . . . . . . . . . . single error, 2 in 2, 2 in 3, 3 in 3, 3 in 15,
3 in 16, 3 in 17
P parity, CP parity, FEBE . . . . . . . . . . . . . . . . . . . single error, error rate
Error rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1610 ± 2 to 2610 ± 9
Alarm insertion
DS1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOF, AIS, YELLOW
DS3 . . . . . . . . . . . . . . . . . . . . . . . . . . . LOF, AIS, YELLOW, IDLE, FEAC
FEAC Far-End Alarm and Control Signals
To test that FEAC alarm and status information is correctly
transmitted, the relevant signal codes can be selected and inserted into
the DS3 C-bit frame format.
Test patterns
Pseudo-random bit sequences
PRBS: 2 11 ±1, 2 15 ±1, 2 20 ±1, QRSS 20, 2 11 ±1 inv., 2 15 ±1 inv., 2 20 ±1 inv.,
2 23 ±1 inv.
Programmable word
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 bits
Receiver unit
Digital inputs
Interfaces to . . . . . . . Telcordia GR-253, TR-TSY-000499, ANSI T1.102
75 O coaxial input; adapter jack selectable from Versacon 9 adapter
system
Bit rates and line codes
DS1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1544 kbit/s; B8ZS, AMI, CMI
DS2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6312 kbit/s; B8ZS, CMI
DS3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 736 kbit/s; B3ZS, CMI
STS-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 840 kbit/s; B3ZS, CMI
STS-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 520 kbit/s; CMI
100 O balanced input, Bantam jack
Bit rate and line codes
DS1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1544 kbit/s; B8ZS, AMI, CMI
Input levels
DS1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DSX-1 compatible
DS3, STS-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HIGH, LOW, DSX-3
Clock recovery pulling range . . . . . . . . . . . . . . . . . . . . . . . . . +500 ppm
Selectable input gain, CMI coded . . . . . . . . . . . . . . . . . . . . . 15 to 23 dB
B3ZS, B8ZS, HDB3, AMI coded . . . . . . . . . . . . . . . . . . . . . . 15 to 26 dB
Selectable adaptive equalizers for DS3, STS-1. . . . . . . . . . . . . . . . . 450 ft
DS1 . . . . . . . . . . . . . . . . . . . . . 1310 ft
Monitor input for STS-3 and STS-12 NRZ signals
See chapter Optical Interfaces for details.
STS-3 receive signal
(for signal structure, see under generator unit)
The ANT-20 demultiplexes one selectable STS-1 tributary from STS-3
and feeds it to the internal processor for evaluation.
STS-1, DS1 and DS3 receive signals
Signal structures as for generator unit
Trigger output
75 O BNC connector, HCMOS signal level
Pulse output for received bit errors, transmit frame trigger, transmit
pattern trigger or 2048 kHz reference clock
Included mapping
VT1.5 and STM-0 mapping
DS1 in STS-1 and 1.5 Mbit/s in STM-0
Modes . . . . . . . . . . . . . . . . asynchronous, byte synchronous (floating)
Error insertion and measurement
Additional error types . . . . . . . . . . . . . . . . . . . . . . . . . . . . BIP-V, REI-V
Alarm generation, dynamic
Alarm types. . . . . . . . . . . . . . . . LOP-V, AIS-V, LOM, UNEQ-V, RDI-V,
RDIEVP, RDIEVS, RDIEVC, RFI-V, PDI-V, PLM-V
m alarms in n frames . . . . . . . . . . . . . . . . . . m = 1 to n±1, n
max
= 8000
or
t1 alarm active,
t2 alarm passive . . . . . . . . . . . . . . . . . . . . . t1 = 0 to 60 s, t2 = 0 to 600 s
Alarm generation, static (on/off) and evaluation
Alarm types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOP-V, AIS-V, LOM,
UNEQ-V, PLM-V, TIM-V, RDI-V, RDIEVP,
RDIEVS, RDIEVC, RFI-V
Alarm detection only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NDF-V
Automatic modes
Autoconfiguration
Automatically sets the ANT-20 to the input signal. The routine searches
at the electrical and optical interfaces for the presence of standard
asynchronous and STS-N/OC-N signals (GR-253, ANSI T1.102) and
the payload contents in channel 1.
Automatic SCAN function
The SCAN function permits sequential testing of all VT1.5 or
VT2 channels in a SONETsignal. The ANT-20SE receiver checks for
alarms in the receive signal, the SONETstructure and all channels and
for synchronization of the selected test pattern in all channels. The
results (OK/not OK) for each channel are entered in a matrix. The
generator runs simultaneously and can be used to stimulate the device
under test.
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