Service manual

4-1

SECTION 4: AUDIBLE ALARM SETTINGS & SERVICE MENU

4.1 Introduction

4.2 Audible Alarm Settings

4.3 Service Menu

4.1 INTRODUCTION

This section discusses use of the service menu to reconfigure power-on default

values, and how to control the behavior of the audible alarm.

4.2 AUDIBLE ALARM SETTINGS

The following paragraphs describe how to change the behavior of the audible

alarm. Operators can select the volume of the alarm and the duration of alarm

silence. Controls for the NPB-190 are shown in Figure 4-1.

NPB190

On/Standby Alarm silence

Adjust

down

Set lower

limit

Set upper

limit

Figure 4-1: NPB-190 Controls

4.2.1 Alarm Silence State

Press the Alarm Silence button to silence the alarm. Press the button a second

time to turn the alarm back on.

4.2.2 Alarm Silence Duration

1. Press and hold the Alarm Silence button for less than 3 seconds.

2. Before 3 seconds have passed the Adjust Up or Adjust Down button can be

used to change the duration of the alarm silence. The alarm’s duration can

be 30, 60, 90, 120 seconds, or the alarm can be turned off.

4.2.3 Alarm Volume

1. Press and hold the Alarm Silence button for more than 3 seconds.