Listed below are the most frequently asked questions for the NHX Series. If you are unable to find the information you are looking for please contact our Technical Support team.
To view a list of all available models for the NHX Series click here.
- Verify all CN1 connections on room stations wire back to the NHX-CEU. This is the common trunk line that carries the audio, data, power between the NHX-80X and the patient stations. Make sure that the CN2 connections are wired to the corridor lamp and bathroom pull cord for each patient room only. If the wiring is reversed between CN1 and CN2, you will need to disconnect and rewire, as the connectors are not the same size.
- Verify all bedside call cords are plugged in and all pull cords are in the up or standby position. If you have NH-2SA/A patient stations and only one call cord, you will need to install a dummy plug or second call cord into the other jack.
- The trunk line for a set of rooms may have exceeded the maximum allowable cumulative wire distance, which is 330’ with the proper wire, Aiphone 862208.
- The cable used may not be the right type, and may not be twisted pair. Verify that the cable is twisted pair, solid, low capacitance with polyethylene insulation.
- In either of the above situations, you may be able to compensate for the noise in the audio line by running a separate 2 conductor wire for the audio, then connect the brown and red wires from each station’s CN1 connector into the separate pair. This will separate the audio line from the data line, which should eliminate the noise from being heard.