Atec JDSU-FST-2310 - Manual (Page 5)

DS3 analysis
Ensure DS3 network performance by performing end-to-end BER testing and
measuring frequency and signal levels on the circuit under test. Technicians can
qualify networks for accurate multiplexed operation by performing BER testing
on one or all DS1 channels transmitted by a DS3 multiplexer. Access to the DS3
signal is provided from the DS3 interface or a DS3 signal embedded in an STS-1,
OC-3, OC-12, or OC-48 circuit. Reduce total testing time on DS3 circuits by using
the dual DS3 receivers to perform bidirectional monitoring, allowing for quick
isolation of problems (figure 5).
DS1 analysis
Verify T1 network performance with the FST-2310’s integrated BER, signal,
alarm, and timing tests. A wide range of stress test patterns, combined with
bidirectional monitoring, enables technicians to identify and sectionalize circuit
problems and quickly qualify circuits for service acceptance. Users can perform
VF analysis of voice trunks with the FST-2310’s support of VF levels and tones
measurements. The drop-and-insert test feature qualifies a DS0 channel while the
T1 circuit remains in service. The FST-2310 isolates sources of timing errors by
using an external bits clock input to identify network synchronization problems.
Access to the DS1 signal is provided from the T1 interface or from the DS1 signal
embedded in a DS3, STS-1, OC-3, OC-12, or OC-48 circuit (figure 5).
5
FST-2310 TESTPAD
FST-2310
FST-2310
DSX-1
MON
Rx
Tx
Voice
Switch
DSX-3
MON
Rx
Tx
MUX
Higher
rates
MUX
Channel
bank
DCS
CSU/DSU
DCS
figure 5 Perform bidirectional monitoring and BER testing on DS1 and DS3 circuits