Specifications

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WARNING: Disconnect primary power prior to servicing.
Static Delay:
A delay function provided by the exciter over a manually settable range of 0 to 1000
ms to compensate for differences in signal processing delays or local propagation
conditions for individual transmitters in a single frequency network.
Sync (Sync pulse):
The horizontal synchronization pulse in the video waveform which, when
transmitted, creates the highest level of peak envelope power in the transmitter.
TII (Transmitter Identification Information):
A data field transmitted during the null in the DAB RF frame containing transmitter
identification information for use by the receiver. Each transmitter in a single
frequency network has its own unique TII identifier.
Time stamps:
Data fields in the transmission protocol (e.g. in the ETI signal) containing timing
information for the purposes of signal monitoring and synchronization.
TS (Transport Stream):
A standard format for transmission and storage of audio, video, and data for
broadcast systems such as DVB and ATSC. The transport stream specifies a
container format encapsulating packetized elementary streams, with error correction
and stream synchronization features for maintaining transmission integrity when the
signal is degraded. Depending on the digital transmission standard, the transport
stream may be in the SMPTE310, ASI, or ETI format.
TPO (Transmitter Power Output):
The desired transmitter forward output power level.
UDC (Up-Down Converter):
A circuit in the LPU modulator section that converts an 140 MHz intermediate
frequency signal to the final desired VHF RF channel frequency (upconversion) or
vice versa (downconversion)
UPS (Uninterruptable Power Supply):