User's Manual
Table Of Contents
- Installation and Operation Manual Draft in Progress
- Contents
- Preface
- 1 Description
- 2 General Safety and Regulatory Information
- 3 Operation
- 4 Working with Base Stations from Your PC
- 4.1 PC Recommendations
- 4.2 Connecting Your PC to the Base Station
- 4.3 Working with the Web Interface
- 4.4 Basic Tasks
- 4.4.1 User Settings
- 4.4.2 Taking the Base Station Offline
- 4.4.3 Troubleshooting Alarms
- 4.4.4 Working with Configuration Files
- 4.4.5 Configuring Single Base Stations
- 4.4.6 Configuring Base Stations in a Channel Group
- 4.4.7 Setting Up Custom Alarms
- 4.4.8 Disabling the Front Panel Keypad
- 4.4.9 Preparing to Download Firmware
- 5 Installation
- 6 Maintenance
- 7 Troubleshooting
- 8 Replacing Modules
- Appendix A – Interface Pin Allocations
- Appendix B – Inter-Module Connections
- TaitNet P25 Glossary
- Tait Software License Agreement
DRAFT 4
TB9400 Installation and Operation Manual Operation 43
© Tait Electronics Limited September 2011
3.2.3 PMU
The only controls on the PMU are the on/off switches on the rear panel for
the AC and DC modules, and the indicator LEDs visible through a slot in
its front panel.
Warning!! The AC and DC module on/off switches do not
totally isolate the internal circuitry of the PMU
from the AC or DC power supplies. You must
disconnect the AC and DC supplies from the
PMU before dismantling or carrying out any
maintenance. Refer to the service manual for
the correct servicing procedures.
AC Module On/Off
Switch
This switch turns the AC input to the PMU on and off. Note that this
switch breaks only the phase circuit, not the neutral.
Note On switches fitted to PMUs up to November 2008, the red button
is “in” when on, and “out” when off. On switches fitted from
November 2008 onwards, the red button remains “out” whether
on or off.
Figure 3.5 Operating controls on the PMU
b AC module on/off switch d indicator LEDs
c DC module on/off switch
bc
rear view
d
front view