Harris Intraplex STL-160 Series Installation & Operation Manual page 29

2 – Functional Description
both group and function names, and the bi-level ON/OFF indicator lights signify the status of the
currently displayed function.
Display CM-5RB Functions
To display the CM-5RB functions, perform these steps:
1. When the CM-5RB display is blank or when a function is displayed, press down on the group
toggle switch to view the name of the currently selected group.
2. Once the current group name is displayed, press down on the group switch again to select the
next group or press up to select the previous group, until the desired group is displayed.
3. Press down on the SET/NEXT switch to display the first function in the currently selected
group.
4. Once a function appears, press down on the SET/NEXT switch repeatedly until the desired
function is displayed.
The bi-level light to the right of the function display indicates the status of the currently displayed
function. If the top (green) light is on, this function is active. If the bottom (red) light is on, the
function is not active.
Set CM-5RB Functions
To turn on a function that is not currently active, press up twice on the SET/NEXT switch while
that function is on the display. Pressing up once causes the top (green) light to blink, indicating
that a setup change takes place if the SET/NEXT switch is pressed up again. Actually pressing up
on the SET/NEXT switch a second time causes the top (green) light to turn on continuously,
indicating that the selected setup parameter has been changed to the currently displayed setting.
If a function is already active, pressing up on the SET/NEXT switch again causes no status or
setup changes.
For example, if the display shows ESF while frame format is set to SF, the red light is on. Pressing
up on the SET/NEXT switch once causes the top (green) light to blink. Pressing up on the
SET/NEXT switch a second time actually changes the current T1 framing format from SF to ESF—
the red light turns off, and the green light is on continuously.
It is important to note that some setup functions are mutually exclusive; setting one function
automatically deactivates another. Examples include
● Line code (you can set line code to AMI or B8ZS but not both).
● Frame format (you can set frame format to SF or ESF but not both).
Other functions are not mutually exclusive. For example, CM-5RB Line (LnLB) and Equipment
(EqLB) loopbacks in the LPBK group may be set at the same time.
Read CM-5RB Module Indicator Lights
Table 2-1 gives CM-5RB indicator light descriptions. For all the lights, ON means the light is on
continuously; BLINK means a rhythmic, one-half second on, one-half second off pulse; and FLASH
means erratic flickering.
Harris Corporation
Intraplex Products
ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
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