Harris Intraplex STL-160 Series, Руководство по установке и эксплуатации

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4 – Setup & Configuration ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 4-21
Intraplex Products
Table 4-10. CM-5RTD Indicator Lights
Indicator Description
BUF Buffer. This yellow light turns on when the delay buffer overflows or underflows, indicating that the
input clock frequency is going outside the PLL lock range.
LOCK This green light turns on when the actual delay is identical to the configured delay.
SRVC This green light turns on when the delay functionality is activated.
The delay setting is determined by the number of bits used in the buffer. The buffer depth can range
from 6 bits to 131,076 bits. Each T1 (1.544 Mbps) bit has a duration of 647.67 nanoseconds (nS),
allowing you to set a delay time ranging from 3.89 microseconds to 84.00 milliseconds. The delay is
set by sending a 17-bit binary number to the CM-5RTD module, which takes this number, adds five to
it, and uses the result to set the buffer depth in bits. The 17-bit number can be sent to the CM-5RTD
module in two ways — through the RS-232 serial remote port using ISiCL P codes. Appendix A gives
detailed instructions for remotely configuring the CM-5RTD module.
Warning! Valid numbers are binary 00000000000000001 through 11111111111111111 (1 through
131,071 decimal). Do not send all zeroes.
4.8 CM-5RB Module & Line Redundancy (MRDN & LRDN
Groups)
The CM-5RB front panel user interface has two new groups for configuring redundancy operation. The
MRDN group sets up module redundancy and the LRDN group sets up line redundancy. All
configuration items in these groups can alternatively be configured using IntraGuide GUI software, the
SCM-1 SNMP proxy agent, or Intraplex Command Language (ISiCL) commands.
In CM-5RB redundancy, the backup common module controls the switching of the module and line.
Therefore most module and line redundancy configuration settings are performed on the backup
module, rather than the primary module. The MRDN group is accessible only on the backup common
module. Also, most LRDN group elements are available only on the backup CM-5RB module. The
exceptions are the FAIL and BER items; these items can be programmed separately on both the
primary and backup common modules, allowing selection of different failure criteria for both primary
and backup T1 lines. To access the groups, depress the group switch on the backup common module
repeatedly until MRDN or LRDN appears. Table 4-22 shows the MRDN group menu items and their
parameters. Table 4-23 shows the LRDN group menu items and their parameters.
Note: Both the primary and backup common modules display the items shown in the FAIL and BER
groups in Table 4-22.