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Cable and fiber installation
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Miscellaneous (environmental) discrete telemetry cable
installation
Description
The miscellaneous (environmental) discrete telemetry access allows the maintenance
center to control and monitor equipment collocated with the Alcatel-Lucent 1850 TSS-5.
The environmental control feature enables the maintenance center to remotely initiate up
to four contact closures at the remote terminal (RT) for equipment operation such as
pumps, generators, etc.
The environmental alarm status indications allow up to 4 miscellaneous user-settable
alarm status indications (SI) at the remote terminal for transmission toward the central
office (ckts 1-4)
Miscellaneous (environmental) discrete telemetry cable assemblies and connections are
listed in
"Miscellaneous (environmental) discrete (MDI/MDO) connections" (p.
respectively.
MDO - ckt1-ckt4 (pin positions 1-8) are NO (normally open) contacts. When enabled,
they become closed. They are connected to the SYSCTL only.
MDO - ckt5 (pin positions 9 and 10) is a NC (normally closed) contact. Unused in this
release.
MDO - ckt6 (pin position 11 and 12) is a NC (normally closed) contact. It monitors M2
(VLNC40) only. Will activate the alarm for any service affecting condition on this pack.
MDI - ckt1-ckt4 (pin positions 1-8) are enabled by an external closure (short circuit)
between the circuit pairs e.g. 1-2 or 3-4 etc. connected to the SYCTL only.
Table 3-11 MDI/MDO cable assemblies
Description
MDI/MDO Alarm Cable, 26 AWG,
8 conductors, both ends are unterminated
Note:
requires one cable.
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3 - 2 2
Table 3-11, "MDI/MDO cable assemblies" (p. 3-22)
MDO requires 12 conductors, therefore, two cable assemblies are required. MDI
Miscellaneous (environmental) discrete telemetry cable
and
Cable
Cable
Length
Assembly #
(feet)
848946653
30
installation
Table 3-12,
3-23),
Access Panel
Connections
MDI/MDO
365-372-403R5.1
Issue 1 November 2008
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