The Aiphone NEM Series Handset Sub Station, model NA-T/A, is a specialized intercom device designed to integrate seamlessly with the NEM and NEM-A Lamp Memory Intercom Systems. Its primary function is to provide a handset-based communication interface, offering a more private and traditional telephone-style interaction compared to open-voice substations. While it can operate independently, its full potential is realized when used in conjunction with other open-voice substations, though calling from the NA-T/A itself becomes inoperable in such configurations.
Function Description
The NA-T/A serves as a handset sub station, allowing users to engage in two-way voice communication with a master station. When integrated into an NEM or NEM-A system, which are master-selective open-voice press-to-talk or handset voice-actuation systems, the NA-T/A adds a layer of privacy to the communication. This is particularly useful in environments where sensitive conversations or a more discreet interaction is preferred over a hands-free, open-voice setup.
The device supports direct voice calls from the master station, meaning a master station can initiate communication with the NA-T/A. Upon receiving a call, the NA-T/A can be answered by simply lifting the handset, establishing a private two-way conversation. If used alongside a standard open-voice substation (such as NA-A, NA-AN, or NB-L), the NA-T/A's handset capability allows for private communication, effectively disabling the open-voice substation when the handset is lifted. This ensures that conversations remain confidential between the master station and the NA-T/A user.
The system also incorporates a call-acknowledged LED, which provides visual feedback to the user, indicating the status of a call. This simple visual cue enhances usability by confirming that a call has been registered or is in progress.
Usage Features
The NA-T/A is designed for simple and intuitive operation, mimicking the familiarity of a traditional telephone.
- Simple Operation: To place a call, a user simply lifts the handset and waits for the master station to answer. This straightforward process eliminates complex button presses or menus, making it accessible for all users.
- Receiving Calls: When a call is initiated from the master station, a pretone and voice transmission are heard. To answer, the user lifts the handset and begins speaking. If the NA-T/A is paired with an open-voice sub station, the user has the option to respond hands-free through the open-voice sub or pick up the NA-T/A handset for a private, two-way conversation. This flexibility allows users to choose the most appropriate communication method based on their needs and environment.
- Automatic Call-in: The device features automatic call-in functionality, streamlining the process of initiating and receiving communications.
- Direct Voice Call from Master Station: Master stations can directly initiate voice calls to the NA-T/A, ensuring efficient communication flow within the intercom system.
- Two-Way Open Voice Communication (with standard substation): When combined with a standard substation like NA-A, NA-AN, or NB-L, the NA-T/A enables two-way open voice communication. Lifting the NA-T/A handset automatically disables the open-voice substation, ensuring privacy during conversations. This feature is particularly useful in environments where both private and open-voice communication options are desired.
- Call Acknowledged LED: A visible LED on the device indicates when a call has been acknowledged, providing clear feedback to the user.
- Handset Voice-Actuation: Communication through the NA-T/A handset is voice-actuated, meaning the microphone is active when the user speaks, providing a natural conversational experience.
Maintenance Features
While the manual primarily focuses on installation and operation, certain aspects touch upon maintenance considerations, particularly regarding wiring and system integrity.
- Simple Wiring: The NA-T/A requires only two wires from the substation to the master station, simplifying the installation process and potentially reducing the complexity of troubleshooting wiring issues. This straightforward wiring scheme contributes to easier maintenance and repair.
- Wiring Distance Guidelines: The manual provides specific guidelines for selecting the appropriate wire gauge based on the required wiring distance. Adhering to these recommendations during installation is crucial for ensuring optimal performance and preventing signal degradation, which can lead to communication issues. Proper wire selection minimizes the need for future troubleshooting related to signal quality.
- Jumper Configuration: The manual highlights the importance of correctly configuring the jumper between terminals 3 & 4 on the NA-T/A. If the NA-T/A is used in conjunction with a standard substation, this jumper must be removed to prevent distortion. This detail is a critical maintenance point during initial setup or when reconfiguring the system, as incorrect jumper settings can lead to poor audio quality.
- Background Music Compatibility: If background music is to be distributed through the system, the NA-T/A must be used in conjunction with a standard substation to avoid distortion. This is an important consideration for system integrators and users, ensuring that the audio experience is not compromised.
- Installation Integrity: The manual explicitly states that Aiphone's warranty is void if the system is installed in a manner other than described. This emphasizes the importance of following the installation instructions meticulously, which is a key aspect of preventative maintenance. Proper installation ensures the longevity and reliable operation of the device, reducing the likelihood of premature failures or performance issues that would require repair.
- Bench Repairs: The warranty covers bench repairs only, meaning any repairs must be conducted at a designated shop or location specified by Aiphone. This implies that users should not attempt internal repairs themselves, preserving the integrity of the device and ensuring that any necessary servicing is performed by qualified personnel.
- No On-Site Service Call Coverage: Aiphone will not be responsible for costs incurred involving on-site service calls. This encourages users to perform basic troubleshooting and adhere to installation guidelines to minimize the need for professional on-site assistance.
In summary, the NA-T/A Handset Sub Station offers a private, user-friendly communication solution within the Aiphone NEM intercom ecosystem. Its design prioritizes ease of use and integration, while its maintenance considerations revolve around proper installation, wiring, and adherence to manufacturer guidelines to ensure reliable and distortion-free operation.
To Next Page
Need help?
General
