Harris Intraplex STL-160 Series, Installation & Operation Manual

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4 – Setup & Configuration ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 4-11
Intraplex Products
Table 4-3. CM-5RB Advanced Configuration Group Menu (continued)
Function Group Description
Topt f3/5 (Default) Time delay options. This parameter activates the time delay function
(TDLY) on the Configuration Group menu. The TDLY function is used to
control delay characteristics of the CM-5RTD module’s integrated time
delay capability.
RED = time delay option not activated, GREEN = time delay option
activated
R Rx f2/4 Reset receiver. This function resets the receive side of the common
module by forcing it out of frame and allowing it to re- synchronize.
Rcpu f2/5 Reset CPU. This function resets the CM-5RB module’s central processing
unit (CPU). The effect is the same as removing and restoring power to
the common module. This reset does not change the module’s
configuration settings.
4.4 T1 Transmitter Timing (TIME Group)
The TIME group selects the timing source that the T1 transmitter uses to clock the outgoing data
stream. When a CM-5RB module is set up for use in a drop/insert multiplexer (that is, set to the DI-A
or DI-B operating mode), the only member of the TIME group is through timing (THRU). No user setup
is necessary or allowed. When the CM-5RB module is set up for use in a terminal multiplexer (set to
TERM mode), four items appear in the TIME group:
● INT (Internal)
● Ext (External)
● Loop (Loop)
● Send (Not used)
In terminal multiplexers, perform these steps to set the T1 transmitter timing mode to internal,
external, or loop by setting the appropriate function in the TIME group (Table 3-4):
1. Press down repeatedly on the GROUP switch until the display reads TIME.
2. Press down repeatedly on the SET/NEXT switch to cycle through the available functions in the
TIME group. The green (top) bi-level light turns on when the display shows the currently set
selection, and the red (bottom) light turns on when the display shows any other selection.
3. To change the current timing setting, press down on the SET/NEXT switch until the display shows
the desired setting, and then press up twice on the SET/NEXT switch. After the first press, the
green (top) light blinks, indicating a change is about to be made. After the second press, it turns
on continuously, indicating the timing source now on the display is active.