OTAL On The Air Light Driver Assembly Hardware Reference Manual User Guide # S2-61120-100 68-11792-100
CTI Products, Inc. OTAL Driver Assembly User Guide Standard Limited Hardware Warranty LIMITED WARRANTY. Equipment manufactured by CTI Products, Inc. is warranted to be free from defects in material and workmanship for a period of ONE (1) YEAR from date of shipment to original purchaser. Under this warranty, our obligation is limited to repairing or replacing any equipment proved to be defective by our inspection within one year of sale to the original purchaser.
CTI Products, Inc. OTAL Driver Assembly User Guide TABLE OF CONTENTS Introduction ................................................................................................................................................ 5 REFERENCE DOCUMENTS ...........................................................................................................................................7 OTAL Driver Logic ......................................................................................................
CTI Products, Inc. OTAL Driver Assembly User Guide Manual Revisions: S2-61120-100 Original Release .
CTI Products, Inc. OTAL Driver Assembly User Guide INTRODUCTION The On The Air Light (OTAL) system allows Carrier Operated Relay (COR) signals from remote receivers to drive On The Air Lamps at consoles. It provides a jumper-selectable option to add Push To Talk (PTT) qualifier(s) to the COR signals so that the console light displays only when the console is keyed and a carrier is received at the receiver.
CTI Products, Inc. OTAL Driver Assembly User Guide Note that the external CIB and EXB modules are not part of the OTAL Driver Assembly, and must be purchased separately.
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CTI Products, Inc. OTAL Driver Assembly User Guide OTAL DRIVER LOGIC The OTAL Driver Assembly features two types of OTAL logic, depending on jumper settings selected: • COR + PTT OTAL Logic (Enabled with E4 & E10 jumpers OUT) • COR Only OTAL Logic (Enabled with E4 & E10 jumpers IN) COR AND PTT OTAL DRIVER LOGIC Output Logic OTAL Out = (Local PTT OR Remote PTT) AND COR Keyup Fail Output Logic The Keyup Fail signal is derived from the PTT signals and the COR signals.
CTI Products, Inc. OTAL Driver Assembly User Guide FIELD CONNECTIONS LOCAL PTT CONNECTIONS Local PTT signals are connected to J1 of the OTAL Driver PCB. (PTT inputs are not required if COR Only OTAL Logic is used.) Local PTT signals shall be either: Isolated Form A Relay Contacts (or opto-isolated relay outputs) closed when PTT signal is present. Logic Outputs - Negative Ground, Active Low when PTT is active.
CTI Products, Inc. OTAL Driver Assembly User Guide REMOTE PTT CIB CONNECTIONS Remote PTT signals are connected to J1 on a remote CIB. (See Figure 1.) PTT inputs are not required if COR Only OTAL Logic is used. Remote PTT signals shall be either: Isolated Form A Relay Contacts (or opto-isolated relay outputs) closed when PTT signal is present. Logic Outputs - Negative Ground, Active Low when PTT is active.
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CTI Products, Inc. OTAL Driver Assembly User Guide LOCAL ALARM / STATUS OUTPUTS The Local Alarm / Status outputs are active-low logic levels, ground-referenced.
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CTI Products, Inc. OTAL Driver Assembly User Guide OTAL DRIVER PCB TO OTAL CIB The OTAL CIB is connected to J4 of the OTAL Driver board through a ribbon cable. The OTAL CIB sends the OTAL signals, the Local PTT signals, and the Power Supply and Link Up signals to the MCN network.
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CTI Products, Inc. OTAL Driver Assembly User Guide MODULE ADDRESSING The MCN Modules in the OTAL system must be addressed properly: Some requirements for addressing are: All MCN modules must be uniquely addressed; no two modules may be set to the same Group & Module address. There may be restrictions on what MCN Group numbers may be used in a particular part of a large network. If you have a Custom Engineered System, follow the addressing set for each module as specified in your system documentation.
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