User guide
33 Tempest®24 00 4-Channel Wireless Intercom System
Network Number and Lockout Key
The Network Number determines the RF frequency hopping pa ern for the BaseSta on and its corresponding BeltSta ons.
This is a key opera onal parameter and is represented by a number between 0 and 42.
When using mul ple collocated Tempest BaseSta ons, it is impera ve that Network Numbers are properly coordinated.
BaseSta ons that are synchronized together using the ZSync technology must u lize the same Network Number Group
for op mal performance to be acheived. Up to 11 Tempest BaseSta ons can be u lized in one Network Number Group
under ideal condi ons (Band 1). For example, a con gura on using ZSync and 11 Tempest BaseSta ons would assign each
BaseSta on a Network Number (0,1,2,3...10) from the Band 1, Group 1. The chart below outlines each Network Number
Group and it’s capacity in rela on to the frequency band being used.
The
Lockout Key prevents systems with the same Network Number from trying to communicate with each other and is
represented by a number between 0 and 255. BaseSta ons that are collocated within the same installa on may have
the same Lockout Key as long as the Network Numbers are di erent. Lockout keys serve as di eren ators for systems
using the same Network Number. Together, the Network Number and Lockout Key represent more than 11,000 possible
combina ons to minimize the possibility of inter-system interference.
The Network Numbers and Lockout Keys for Tempest Wireless BaseSta ons are set to a factory default before leaving the
factory. It is always recommended to adjust the Network Number and Lockout Key upon ini al set up out of the box. Failure
to set a unique Network Number and Lockout Key may result in poor system performance caused by interference from
another Tempest Wireless system using the same Network Number and Lockout Key. Because of the requirement to pair
every BeltSta on to each BaseSta on that it will communicate with, it is not possible to manipulate Network Numbers and
Lockout Keys at a BeltSta on to gain unauthorized access to a communica on channel.
Collocated BaseSta ons must use Network Numbers from the same Network Number Group;
failure to do so can lead to poor performance.