Summary of Contents for DCB PAS v2
- Page 1 PAS v2 Priority Audio Switch User’s Guide Version 2, Revision C Revised Nov 25, 2019 Version 2.0c...
-
Page 2: Table Of Contents
Chapter 4 Operation..........10 Common Uses..............10 Operation Details............10 Cascaded PAS..............11 Indicator LED's..............11 Chapter 5 Troubleshooting........12 Hardware Problems............12 Appendix A Specifications.........13 PAS Specification............13 Appendix B Warranty..........14 DCB Product Two Year Limited Warranty....14 Appendix C Schematic..........15 Revision C Reference Schematic........15 Appendix D Accessories..........16 Mounting Options............16... -
Page 3: Certifications
Certifications FCC Statement This device complies with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. his equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. -
Page 4: Chapter 1 Introduction
Chapter 1 Introduction This chapter provides an overview of the PAS features and capabilities. The Priority Audio Switch (PAS) is designed to be installed between a transmitter site and two control operator positions so they can share a single transmitter. The PAS takes in two 4-wire audio lines each with a Push-to-Talk (PTT) lead where PTT is activated by shorting this lead to ground. -
Page 5: Pas Hardware Specifications
PAS Hardware Specifications Connectors One 48 VDC power port • Four RJ-45 audio input ports • Two RJ-45 audio output ports • Two audio input ports are paired with each audio output port • Controls There are no user software controls. The unit is operational upon power application. •... -
Page 6: Chapter 2 Installation And Configuration
Chapter 2 Installation and Configuration Overview The PAS is connected between two audio sources and a single audio receiving device. There are two instances of this operation, and they may be cascaded to allow for three inputs to a single transmitter, or used independently with two inputs to each of two transmitters. -
Page 7: Chapter 3 Connectors
Chapter 3 Connectors Power Connector Green screw connector (numbered right to left) Pin 1 -48 VDC Pin 2 Chassis ground Pin 3 +48 VDC... -
Page 8: Rj-45 E&M Connection Pin-Outs
RJ-45 E&M Connection Pin-outs The following table shows the PRIMARY, SECONDARY and OUTPUT port pin assignments. The OUTPUT port Audio Out signals on pins 1 and 2 are switched between PRIMARY and SECONDARY port based on the PRIMARY port PTT (E1) input on pin 4. The two right most columns show the OUTPUT signals when PRIMARY PTT input is OPEN and SHORTED to GND. -
Page 9: Revision A&B Rj45 Pin Assignments
Revision A&B RJ45 Pin Assignments This table shows the current RJ45 pin numbers in the left hand column and the older Rev B pin numbers in the far right column. The signal directions are noted in the PRI/SEC and OUTPUT columns. - Page 10 If you are connecting a CIEM to the output side ports of the PAS, then you must cross over the signals and you can only use E&M Types 4 & 5. This is because CIEM can only accept PTT input on the M-Lead, the PAS only can only signal PTT by closure to ground, and E&M types 4 &...
-
Page 11: Chapter 4 Operation
Chapter 4 Operation This chapter explains how to use the PAS. Common Uses The application below shows the PAS used with Loop AM3440 channel banks for remote control of a transceiver from two different locations. Push to talk at the controller positions on the left is passed across the link using E&M signaling. -
Page 12: Cascaded Pas
Note: When the PAS is un-powered, the audio path from secondary is connected to the output. It becomes a pass- through of the secondary port in the event of power loss. Cascaded PAS The two “sides” of a PAS may be combined to make a three-input/one-output PAS instead of two independent two-input/one-output unit. -
Page 13: Chapter 5 Troubleshooting
Before anything else, check that all cables are wired correctly and properly connected and make sure you have proper grounding for all equipment. Since this is a specialty device and should be deployed by knowledgeable technicians, please contact DCB technical support if there is any problem installing or maintaining the unit. -
Page 14: Appendix A Specifications
Appendix A Specifications PAS Specification One 48 VDC power port Two RJ-45 input connectors for each channel (total of 4) One RJ-45 output connector for each channel (total of 2) Environmental: Operation -25° C to +65° C C non-condensing humidity ... -
Page 15: Appendix B Warranty
DCB Product Two Year Limited Warranty DCB products are warranted to be free of defects in materials and workmanship for two years. Data Comm for Business, Inc. will repair or replace any equipment proven to be defective within the warranty period. -
Page 16: Appendix C Schematic
Specifications Appendix C Schematic Revision C Reference Schematic... -
Page 17: Appendix D Accessories
Appendix D Accessories Mounting Options The PAS has an optional front bezel / shelf that can be used to mount either 1 or 3 PAS units in a 1U 19 inch rack space. Order part number 9902095 to hold 3 PAS and 9902096 for single unit. An AC to DC adapter for a single unit (300mA) .is available as part number 9001176 A single AC adapter that can be used with 3 units (1.3A) is part number TBD...
Need help?
Do you have a question about the PAS v2 and is the answer not in the manual?
Questions and answers