Harris ACS-163, 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 4-9
Intraplex Products
Table 4-3. CM-5RB Advanced Configuration Group Menu
Function Group Description
FTIM Fallback timing mode. This function sets the timing source used in the
event that primary timing is lost.
RED = not selected, GREEN = selected
FLoo Fallback timing set to loop (timing recovered from received T1).
FInt (Default) Fallback timing set to internal (multiplexer’s oscillator).
FExt Fallback timing set to external (clock input connector).
FSec Fallback timing set to secondary external.
exit Exit FTIM and display RTIM.
RTIM Return timing mode – When primary timing mode is set to external, this
function determines whether timing source automatically reverts back to
primary.
RED = not selected, GREEN = selected
Off Timing remains in fallback mode after primary timing is restored.
Auto (Default) Timing returns to primary mode after primary timing is restored.
exit Exit RTIM and display RXGN.
RXGN Receive signal gain (input sensitivity). This function adjusts the
sensitivity of the T1 receiver. Used for increasing gain with long cables.
RED = not selected, GREEN = selected
30dB Receiver can accept a signal up to 30 dB below nominal.
36dB Receiver can accept a signal up to 36 dB below nominal.
exit Exit RXGN and display JBUF.
JBUF Jitter buffer depth. This function adjusts the multiplexer’s jitter
tolerance. Selecting a higher value increases the jitter buffer depth, but
also increases circuit delay.
RED = not selected, GREEN = selected
Joff No jitter buffer, minimum delay. May not work in DI-A or DI-B mode, or
if payload loopback (PaLB) is on.
J 32 (Default) Sets jitter buffer depth to 32 bits.
J128 Sets jitter buffer depth to 128 bits.
Jrst Resets the jitter buffer.
exit Exit JBUF and display FRAM.
FRAM Frame loss sensitivity. This function sets the criteria for declaring a loss
of frame synchronization condition. When a loss of frame
synchronization is declared, the FRM indicator light turns on and the
multiplexer immediately begins to reestablish frame synchronization.
RED = not selected, GREEN = selected
f3/5 (Default) Frame loss is declared when three out of five consecutive framing
patterns are in error.
f2/4 Frame loss is declared when two out of four consecutive framing
patterns are in error.
f2/5 Frame loss is declared when two out of five consecutive framing patterns
are in error.
exit Exit FRAM and display TXYL.