Clear-Com TEMPEST 2400 - Zsync Technology

63 Tempest®2400 2-Channel Wireless Intercom System
ZSync Technology
Zero Sync (ZSync) technology has been developed to enable Tempest’s Seamless Roaming feature as well as greatly
enhance the performance of non-roaming mul-BaseStaon Tempest installaons. The ZSync technology provides a more
sophiscated form of BaseStaon synchronizaon over the older Accu-Sync technology. To ulize ZSync technology either
a Zero Sync Dongle or a Parallel Zero Sync Generator is necessary to act as the source of the ZSync signal. These devices are
sold separately. All Tempest BaseStaons connue to support and provide Accu-Sync synchronizaon signals. It is, however,
strongly recommended that ZSync technology be used whenever there is a mulple BaseStaon conguraon.
With tradional Accu-Sync technology, BaseStaon transmit/receive cycles are coordinated so that all of the BaseStaons
are transming at the same me. This prevents one transmier from de-sensing nearby receivers. Tradional Accu-Sync
does not, however, coordinate anything in the frequency domain. ZSync technology combats turn-on to turn-on variaon
by providing a zero sync reference that coordinates the hopping paerns of all connected BaseStaons. ZSync technology
ensures that, in addion to transmit/receive ming, there is a xed relaonship between all of the BaseStaon’s radio
frequencies every me the system is powered up irrespecve of random me variaon in power-up sequences. Assuming
that the Network Numbers for the BaseStaons have been set properly, there will be virtually no unit to unit interference
even with up to 11 BaseStaons in a system when using ZSync. This is true for roaming as well as non-roaming applicaons.
In addion, in roaming conguraons, ZSync allows the BeltStaons to know exactly what frequency a given BaseStaon is
operang on at any given me. This allows for very fast detecon and switching from one BaseStaon to another. The use
of ZSync technology is required for all roaming applicaons.
Pre-Requisites
• All Tempest Wireless equipment (roaming or non-roaming) must have Radio rmware version 1.18 or higher to fully
ulize ZSync. Tempest equipment with radio versions below 1.18 will sll ulize the Accu-Sync poron of the ZSync
signal, but will not gain the added benets.
• All Tempest BaseStaons to be used in a roaming applicaon must have the same ZSync reference. For more
informaon on roaming applicaons see the secon on Seamless Roaming in this manual.
Zero Sync Hop Generator
The Zero Sync Hop Generator (SG-100, ZSync “dongle”) provides a precise, zero reference synchronizaon signal to each
connected Tempest 2.4GHz BaseStaon. This signal aligns the hopping paerns and transmit/receive mes of all connected
BaseStaons to produce the best possible mul-base, collocated RF performance.
The ZSync dongle connects to the BaseSync IN port of the rst collocated BaseStaon. Each addional BaseStaon is then
daisy-chained via the BaseSync ports of each sequenal BaseStaon. If any BaseStaon loses power in this conguraon,
all remaining sequenal BaseStaons will not receive the ZSync signal. Therefore, the ZSync dongle is best ulized in
installaons where all BaseStaons are in use and/or powered on at all mes.
Allow up to one minute for all of the BaseStaons to see the zero sync reference in the
ZSync signal and thus become “zero synced” with all of the other BaseStaons. Prior to this
me the BaseStaons are likely not fully coordinated.