Viavi T-BERD MTS 5800, Руководство по началу работы

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Appendix A Specifications
MSAM specifications
T-BERD/MTS/SC Getting Started Guide
March 2018 22046537, Rev. 016 Page 203
Table 94 lists the input sensitivity specifications for the E1 receiver.
Transmitter (RJ-48)
The E1 transmitter operates as per ITU-G.703 (11/01). Table 95 lists the transmitter
specifications.
Frequency measurement Range: 2.048 MHz ±250 ppm
Accuracy: ±1.5 ppm, ±1 ppm per year aging
Resolution: 1 Hz
Level Measurement
(Balanced)
Level Vp
Range: +4 V to 0.03 V
Accuracy: ±0.02 V ± 10%
Resolution: 0.01 V
Level dBnom
1
:
Range: +2.5 dBnom to -37 dBnom
Resolution: 0.1 dB
1. The designation in dBnom is relative to nominal signal 3 Vp.
Table 94 E1 RJ-48 receiver sensitivity specifications
Termination Type Impedance Input Range
Bridge (HI-Z) >1200
Ω
+2.5 to -35 dBnom due to cable loss
Terminate 120
Ω
balanced +2.5 to -35 dBnom due to cable loss
PMP 120
Ω
balanced -20 dBnom due to resistive loss in
addition to 0 to -6 dB due to cable loss
Table 93 E1 RJ-48 receiver specifications (Continued)
Parameter Specification
Table 95 E1 RJ-48 transmitter specifications
Parameter Specification
Connector Balanced RJ-48
Line code HDB3 or AMI
Bit rate Nominal: 2.048 Mbps
Accuracy: ±1.5 ppm, ±1 ppm per year aging
Frequency offset: ±100 ppm in 1 ppm steps
Clock Source
(Timing) – Internal reference clock with accuracy ±1.5 ppm,
±1 ppm per year aging
– Recovered from Rx1
– External from BITS, SETS, or CLOCK
Frequency offset ±100 ppm in 1 ppm steps
Pulse shape Complies with ITU-T G.703 (11/01)