Viavi T-BERD MTS 5800, Руководство по началу работы

Страница: 217 / 296

Appendix A Specifications
MSAM specifications
T-BERD/MTS/SC Getting Started Guide
March 2018 22046537, Rev. 016 Page 193
DCE emulation
Table 75 lists specifications for V.35 testing in DCE emulation mode.
RS-449/V.36 specifications
Recommendation V.36 (equivalent to RS-449) is primarily a modem specification;
however, it also describes a data communications interface that uses balanced
V.11 amplifiers for all circuits except test mode circuits. The V.36 test mode circuits use
unbalanced V.10 amplifiers. V.10 amplifiers can also be used for signaling circuits.
When V.10 amplifiers are used for signaling, the B lead is grounded internally in the
MSAM.
Table 76 lists the MSAM V.36 specifications.
Table 75 V.35 DCE emulation specifications
Specification Description
User controllable leads – RLSD
– DSR
– CTS
– TM
– CI
Sync Timing Mode
Rx Timing Sources
– Interface (from the SCTE-306 circuit)
– Internal Synthesizer
– External Clock
– Interface Recovered
Sync Timing Mode
Tx Timing Sources
– Interface (from the SCTE-306 circuit)
– Internal Synthesizer
– External Clock
– Interface Recovered
Table 76 V.36 specifications
Specification Description
Maximum speed Balanced
– 20 Mbps
Unbalanced
– 64 Kbps
Termination options – unterminated
– 78 Ohm
– 100 Ohm
– 124 Ohm
Impedance – > 4 k Ohm
,
unterminated circuits
– 10% tolerance, terminated