Set the Clock Options

DEFINITY Made Easy Tools
Issue 3, December 2001

Installing the Stratum 3 Clock

There are four sets of option switches on the clock.

Set the options on the Clock Input (CI) circuit pack acording to CI Option Switch Settings.

Set the options on the Stratum 3 Clock (ST3) circuit pack according to ST3 Clock Circuit Pack Option Switch Settings.

Set the options on the Composite Clock Timing Output (TOCA) circuit pack according to Composite Clock Timing Output (TOCA) Circuit Pack.


CI Option Switch Settings
Switch	Function	Position
1	T1 Select	OFF = enable (default) ON = disable
2	CC Select	OFF = enable ON = disable (default)
3	Framing Select	OFF = ESF ON = D4 (default)
4	BX.25	OFF = enable ON = disable (default)


ST3 Clock Circuit Pack Option Switch Settings
Switch	Status/Results
SW1 Minor Alarm Control	OFF = minor alarm never output ON = minor alarm is output if holdover occurs
SW2 Major Alarm Control	OFF = major alarm is output and fail lamp lights if 5 VDC power is lost and 4 kHz output is lost ON = major alarm is output and fail lamp lights if 5 VDC power is lost and 4 kHz output is lost and holdover occurs

Note:

Only SW 1 and SW2 are used. SW1 controls the output of alarm signals from the Stratum 3 Clock circuit pack.


Composite Clock Timing Output (TOCA) Circuit Pack
Switch		Range
500	1000	1 ft (0.3 m)	500 ft (152 m)	1000 ft (305 m)	1500 ft (457 m)	2000 ft (610 m)	2500 ft (762 m)	3000 ft (914 m)
OFF	OFF	<-------------------------------------------------->
ON	OFF		<---------------------------------------------------->
OFF	ON			<---------------------------------------------------->
ON	ON				<--------------------------------------------------->

Note:

Set switches 1 and 2 according to the distance from the Stratum 3 clock to the DEFINITY System. Set switch 3 to ON. Set switch 4 to OFF.

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