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Summary of Contents for DCB PTT24
- Page 1 PTT24 Manual Copyright 2016 All rights reserved. Manual version 1.0, Firmware version 1.0 All trademarks and trade names are the properties of their respective owners. July, 2016 Manual Version 1.0, Firmware 1.0...
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Page 2: Table Of Contents
ABLE OF ONTENTS Chapter 1 Introduction....................1 Package Contents...................2 Software Requirements..................2 Chapter 2 Installation....................3 Overview....................3 Installation and Configuration..............4 1. Rack Mounting ...................4 2. Cabling......................4 12 and 24 Port cable reference..............5 3. Select 12 or 24 ports...................6 4. Chassis grounding..................6 5. Power connections..................7 6. -
Page 3: Chapter 1 Introduction
Introduction This chapter provides an overview of features and capabilities. he PTT24 is a Push-to-Talk lockout device. It is used with multiple E&M circuits linked to radio transmitters, PBXs, etc. The PTT-24 solves the problem of E&M leads being locked into a Transmit ON state when a T1 circuit fails. -
Page 4: Package Contents
Software Requirements Except for testing there is no need for any software to configure or operate the PTT24. Using the PTT24 RS232 port requires removing the top cover to access the management port located inside the unit. Except for testing it should never be necessary to access this port in the field. -
Page 5: Chapter 2 Installation
PTT24 Manual Chapter 2 Installation This Chapter details the installation process . Overview The PTT24 is a 1U high by 19” rack mount unit. Installation and configuration of the PTT24 PTT24 Front Panel PTT24 Rear Panel... -
Page 6: Installation And Configuration
Installation: Channel Bank, Transmitter, Power, Alarm, Ground 1. Rack mount the PTT24 The PTT24 is shipped with 4 mounting screws and 2 rectangular spacers. The spacers protect front panel from being bent or scratched by the mounting screws. 2. Cable the Channel Bank to the PTT24 Standard straight through 50-pin male to female telco cables are used to connect to the PTT24. -
Page 7: And 24 Port Cable Reference
PTT24 Manual Controlled and Pass Thru Channels for the 12 and 24 Channel Selections... -
Page 8: Select 12 Or 24 Ports
3. Select 12 or 24 Channel Operation The toggle switch “24< >12” selects either 12 or 24 channels of E&M leads to be controlled by the PTT24. The left position selects 24 channels, the right position selects 12 channels. 4. Connect the PTT24 Frame/Chassis Ground Frame ground is on the 48 VDC power connectors, on the 50-pin telco connector shells and cable tie down screws. -
Page 9: Power Connections
6. Connect the Alarm IN and Alarm Out The Alarm In can come from another PTT24 or from the channel bank. The Alarm Out can be connected to another PTT24, to a SCADA system for remote reporting, to some local external alarm signal device, etc. -
Page 10: Push Button Test
8. Relay Test Push Button Switch The PTT24 Relay Test switch can be pressed for a quick test. The audible alarm should sound, relays should click, the Alarm LED should light, the Alarm Out relay should operate. The alarm will sound only when the ALARM toggle switch is in the ON position. -
Page 11: Chapter 3 Testing
RS232 Port The PTT24 has an internal RS232 port located on the right hand side of the PC board when viewed from the front. To access the RS232 port the cover of the PTT24 must be removed. -
Page 12: Appendix A Specifications
Appendix A Specifications PTT24 Push-to-Talk Lockout Device Specifications General Front Panel (these are approximate placements, subject to relocation): • - Toggle switch to select 12 or 24 E&M ports - Push button switch to select port 1 to 24 for PTT Lockout control - Test switch, momentary, to test lockout function •...
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