Viavi T-BERD MTS 5800, Руководство по началу работы

Страница: 237 / 296

Appendix A Specifications
MSAM specifications
T-BERD/MTS/SC Getting Started Guide
March 2018 22046537, Rev. 016 Page 213
Table 118 lists the input sensitivity specifications for the Primary and Secondary DS1
receivers.
Transmitter
Table 119 lists specifications for the DS1 transmitter.
Physical measurements
Table 120 lists frequency, level, and jitter measurement specifications for DS1.
Table 118 DS1 receiver sensitivity specifications
Termination Type Impedance Input Range
Bridge >1000
Ω
+6 to -35.0 dBdsx due to cable loss
Terminate 100
Ω
±5% +6 to -35.0 dBdsx due to cable loss
DSX monitor 100
Ω
±5% -20 dBdsx due to resistive loss in
addition to 0 to -6 dB due to cable loss
Table 119 DS1 transmitter specifications
Parameter Specification
Connector Bantam jack
Output 6 V peak-peak into 100
Ω
Line build out
(LBO) level 0 dB, -7.5 dB, -15.0 dB or -22.5 dB due to cable loss at
772 kHz
LBO level accuracy At 772 kHz relative to the signal at 0 dBdsx:
– ± 2.5 dB for -7.5 dB
– ±3 dB for -15.0 dB and -22.5 dB
Line code AMI, B8ZS
Clock source
(Timing) – Internal reference clock with accuracy ±1.5 ppm,
±1 ppm per year aging
– Recovered from Rx1 or Rx2
– External from BITS, SETS, or CLOCK
Frequency offset ±100 ppm, in 1 ppm steps
Pulse shape With output terminated in 100
Ω
resistive load and 0 dB
LBO selected, the interface meets ITU-T Recommenda-
tion G.703 (11/01) and ANSI T1.102-1993
Table 120 DS1 frequency, level, and jitter measurement specifications
Parameter Specification
Level V p-p Range: 14.0 V to 0.06 V
Accuracy: ± 0.04 V ± 10%
Resolution: 0.01 V