Symmetricom 1100, 1000 manual Power, Input Alarms, Output Alarms, Alarm Description

Chapter 7 Specifications of the TimeProvider

Alarms

Alarms

Input Alarms

The PRS input is inhibited when a contact closure (less than 1 Ω) is present across the PRS Alarm In connection.

Output Alarms

The output alarm connector is on the Input module, and can be either a DB25 connector or wire-wrap pins. See Making Alarm Connections, on page 70, for a pinout diagram of the DB-25 connector. Table 7-6describes the contact closure for the alarm outputs.

Table 7-6. Output Alarm Specifications

Alarm	Description
Minor	Contact closure (NC or NO) 1 Amp Form C
Major	Contact closure (NC or NO) 1 Amp Form C
Critical	Contact closure (NC or NO) 1 Amp Form C

Power

Dual power supplies from –36 to –72 V DC. Table 7-7lists the maximum and typical power consumption using crystal and Rubidium IOCs.

Table 7-7. Typical Power Consumption

IOC Type	Max Power (W)	Typical Power (W)
	per IOC	per IOC
Crystal	40	30
Rubidium	60	40
		(70 with two Rb IOCs)

Symmetricom recommends a 5 A fuse for the power supply to the TimeProvider shelf.

200 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008