ZHD is Zaxcom’s new High Density modulation mode that will allow up to10 channels of wireless to be operated in just one MHz of spectrum space. ZHD will be standard in the TRXLT3, TRXLA3 and TRX743 that will begin shipping worldwide June 2016.
ZHD Key Features:
TRXLT3, TRXLA3 and TRX743 transmitters are capable of running either ZHD modulation or any existing mono modulations so they maintain compatibility with all Zaxcom receivers. ZHD modulation mode conforms to all currently proposed FCC regulations for spectrally efficient wireless transmission.
Currently the ZHD modulation will work in single mode on all current QRX200 series receivers, but it will not work in dual mode. There will be a dedicated ZHD receiver in the future.
ZHD modulation with future ZHD receiver – 10 frequencies per MHz – 60 per TV channel
ZHD modulation with current QRX200, QRX235, RX200, QRX212 – 5 frequencies per MHz – 30 per TV channel
Current XR modulation with current receiver – roughly 2.5 per MHz – 15 per TV channel