Harris Intraplex STL-160 Series, Installation & Operation Manual

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3 – Installation & Wiring ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 3-15
Intraplex Products
3.6.3 External Timing Connector Wiring (Optional)
The MA-215, MA-235-1, MA-235-2, and MA-217B module adapters all provide RJ-11 ports for timing
input and output. Timing Out is a balanced 1.544 MHz RS-422/RS-485 output from the corresponding
CM-5RB module that may be used as an external T1 timing source by other equipment. Timing In is a
balanced 1.544 MHz RS-422/RS-485 input to the corresponding CM-5RB module that may be
connected to an external T1 timing source. The CM-5RB module synchronizes to this source only if the
module timing is set to EXT.
You can also use these jacks to form a daisy-chain configuration with several multiplexers together
and synchronize them all to the same clock. Section 3-8 discusses this application of multiple systems
synchronized to a common timing source. Table 3-11 outlines the external timing input connection for
these module adapters:
● MA-215
● MA-235-1
● MA-235-2
● MA-217B
Table 3-11. MA-215/MA-235-1/MA-235-2/MA-217B Timing In Port Pin Assignments
Connector Pin Description
1 External primary timing in positive (+)
2 External primary timing in negative (-)
3 External timing source select
4 Signal ground
5 External secondary timing in positive (+)or CM-5R-TD time delay control in positive (+)
6 External secondary timing in negative (-) or CM-5R-TD time delay control in negative (-)
Table 3-12 outlines the external timing output connections for the MA-215, MA-235-1, MA-235-2, and
MA-217B module adapter.
Table 3-12. MA-215/MA-235-1/MA-235-2/MA-217B Timing Out Port Pin Assignments
Connector Pin Description
1 External timing out positive (+)
2 External primary timing out negative (-)
3 Signal ground
4 Signal ground
5 Auxiliary positive (+) not defined
6 Auxiliary negative (-) not defined
3.6.4 Remote Port Wiring (Optional)
To take advantage of the optional remote monitoring and control feature of ACS-160 Series
multiplexers, connect a PC or ASCII terminal to the remote port on the MA-215, MA-235-1, MA-235-2,
or MA-217B module adapter. Connection to the remote port can be made either by direct wiring or via
a dial-up circuit using a modem. Section 5 – “Remote Control Operation” describes these options.
Intraplex can provide a cable and adapter (RJ-11 to DB-9) for PC-to-common-module port
connections.
The MA-215, MA-235-1, MA-235-2, and MA-217B module adapters use an RJ-11 jack for the remote
port. Table 3-13 gives the pin assignments. When connecting the remote port to a modem, use a null
modem cable (a null modem cable provides a standard RS-232 DCE to DCE connection).