Codan Radio MT-4E Paging - Manual (Page 26)

USER GUIDE | MT-4E PAGING SYSTEMS
Chapter 3: MT-4E Paging System Components Page 18
Zetron Model 66 Transmitter Controller
The Model 66 Transmitter Controller connects to a Codan MT-4E paging transmitter and allows the
transmitter to be remotely controlled from a central paging terminal. The Model 66 recognizes the site
address, selects the modulation mode (analog or digital), keys up the transmitter (by translating the
PURC® tones), and transmits the audio or digital data.
Multiple transmitters can be synchronized (with optional simulcast-delay), dual-frequency transmitters
can be controlled(with optional second address control), and four link “hops” are allowed (with optional
link controller version). The Model 66 is GSC, POCSAG (512, 1200, 2400), FLEX™ (1600) and PURC®
compatible.
Figure 3-5: Zetron Model 66 Transmitter Controller
Zetron Model 600 / 620 Simulcast Paging System
The Model 600 / 620 Simulcast Paging System uses timing information from the Global Positioning
System (GPS) to synchronize the transmission of digital paging signals to very tight tolerances. This
provides the microsecond timing accuracy necessary for high-speed simulcast paging with protocols
such as POCSAG (512, 1200, 2400) or FLEX™ (1600). FLEX™ (3200 or 6400) is optional.
The system consists of the Model 600 Wireless Data Manager (Source Unit) and multiple (up to 1000)
Model 620 Wireless Data Encoders (Destination Units). The link between the Source and Destination
units may be any type (or combination) of link that can reliably transport TNPP data.
The Model 600 accepts TNPP input from up to three TNPP links, effi ciently batches the pages with
timing information from an attached GPS, and delivers the pages across a network to multiple Model
620 Wireless Data Encoders. The Model 620 receives batches of paging data from the Model 600,
and encodes the data for POCSAG or FLEX™. At the precise time indicated by an attached GPS, the
encoded message batch is sent to the transmitter, resulting in synchronous broadcast with other Model
620 controlled transmitters.
Figure 3-6: Zetron Model 600 / 620 Simulcast Paging System