Avaya 555-233-116 manual ST3 clock board option switch settings Switch Status/Results

Stratum 3 clock

2. Set the options on the Stratum 3 (ST3) clock board (see Table 17).

Table 17. ST3 clock board option switch settings

Switch	Status/Results
SW1	OFF = minor alarm never output
Minor alarm	ON = minor alarm is output if holdover occurs
control
SW2	OFF = major alarm is output and fail lamp lights if 5 VDC
Major Alarm	power is lost and 4 kHz output is lost
Control	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 board.

3.Set the options on the composite clock timing output board (TOCA) per Table 18.

4.Set the Stratum 2/Stratum 3 switch to the STRATUM 3 position.

Table 18. Composite clock timing output board (TOCA)

Switch		Range in feet (meters)
500	1000	1.0	500	1000	1500	2000	2500	3000
		(0.3)	(152)	(305)	(457)	(710)	(772)	(914)
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.

164 Issue 4 October 2002 555-233-116