Specifications

3-100 888-2857-001 5/9/13
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
Figure 3-68 CTTB Modulator Status Screen 3
Figure 3-69 Xmtr Home>Exciter Home>Status>CTTB Modulator (screen 3)
Field Explanation
Output Process Time Displays throughput delay, measured after it leaves the exciter network
delay circuit and travels to the output of the transmitter. This delay is
important if the network consists of transmitters from different
manufactures, where the output process time will change from one
manufacturer to another.
Local Delay Adjust Displays offset time, which is used, along with other delays, to calculate
the exciter data storage time. It is needed to synchronize the data arrival
at the single frequency network overlap zone when it is not located at the
geographic center of two or more transmitters.
Maximum Network
Delay
Additional delay added in order to be able to easily add a transmitter to
the network without having to adjust the delay of all network
transmitters. This delay is set in the distribution network control center.
Distribution Network
Delay
Display of the delay from the distribution network common point to each
transmitter in the single frequency network. It is usually measured
automatically in each transmitter exciter and displayed here. This delay
varies from transmitter to transmitter and must be taken into account in
order to synchronize the data output from each transmitter.
SIP Delay Adjust Displays status of this parameter
TX ID Displays identification number assigned to this transmitter, which is part
of a single frequency network. The ID is necessary to allow
communication with and control of each transmitter in a single frequency
network.
DC Test Tone Mode: Displays test status, which is Disable or Enable. Enabling the DC Test
Tone Mode transmits a single tone which is placed at the center of the
spectrum. It is used to measure carrier frequency. The single tone signal
is the same power as the exciter is putting out normally.