AT&T DC Operation Manual

Operation Manual

(Leave with Customer)

DC UPS Operation Manual, Rev 1.0 Page: 1 of 8

AT&T DC UPS

TABLE OF CONTENTS

1 ................................................................................................................................................................................................. 3 PRODUCT INTRODUCTION

1.1

GENERAL DESCRIPTION..................................................................................................................................................................................................... 3

1.2 COMPONENTS ......................................................................................................................................................................................................................3

2 .............................................................................................................................................................................................. 4 IMPORTANT SAFETY NOTES

2.1

ELECTRICAL WARNINGS ................................................................................................................................................................................................... 4

2.2 .........................................................................................................................................................................................................4 BATTERY WARNINGS

2.3 SAFETY WARNING LABEL ..................................................................................................................................................................................................5

3 .............................................................................................................................................................................................................................. 6 OP RATIONE

4 ........................................................................................................................................................................................................................ 8 MAINTENANCE

ONTROL3.1 ............................................................................................................................................................................................................................6

C

3.2 ..........................................................................................................................................................................................................7 OPERATIONAL LEDS

3.3 ...............................................................................................................................................................................................................................7 ALARMS

3.4 ...............................................................................................................................................7 ALARM LEDS AND CORRESPONDING AUDIBLE ALARMS

3.5 AUDIBLE ALARM ................................................................................................................................................................................................................7

4.1

MAINTENANCE MODE........................................................................................................................................................................................................8

4.2 CUSTOMER BATTERY REPLACEMENT ..............................................................................................................................................................................8

TABLE OF FIGURES

Figure 1: DC UPS Power Supply and ONT System Configuration...................................................................................................................3

Figure 2: Warning Label .......................................................................................................................................................................................5

Figure 3: DC UPS Front Panel LEDs and Control ..............................................................................................................................................6

Figure 4: DC UPS Front Panel LEDs ...................................................................................................................................................................7

Figure 5: Battery Replacement ...........................................................................................................................................................................8

TABLE OF TABLES

Table 1: Customer Button Operation ..................................................................................................................................................................6

Table 2: LED Indicators ........................................................................................................................................................................................7

Table 3: Audible Alarm ......................................................................................................................................................................................... 7

Table 4: Audible Alarm Actions...........................................................................................................................................................................7

DC UPS Operation Manual, Rev 1.0 Page: 2 of 8

1 PRODUCT INTRODUCTION

1.1 General Description

The DC UPS (ONT Uninterruptable Power Supply with Battery Back-Up Unit) is designed to be
mounted inside a customer premises. The DC UPS converts 120/230Vac to 12Vdc and provides
four to eight hours of backup battery power for lifeline POTS and Ethernet services in the ONT.

Alarm outputs are available on the DC UPS to monitor the status of the backup battery
(On/Low/Faulty/Missing). The DC UPS indicates its status to the resident with LEDs and audible
alarms and to the outdoor ONT by a signal return connection.

1.2 Components

The DC UPS consists of a dedicated 120V/230ac to 12Vdc power supply with Battery Backup
and dedicated support cables.

The DC UPS houses a dedicated battery charger to maintain a 12Vdc, 7.2Ah lead-acid sealed
battery, battery monitoring and alarm circuitry. It contains four indicator LEDs to provide
operational status at a glance, status audible alarms, and one customer-operation button to
silence the audible alarm for 24 hours.

Figure 1: DC UPS Power Supply and ONT System Configuration

DC UPS Operation Manual, Rev 1.0 Page: 3 of 8