Figure 1- 1: Simplified Block Diagram Of The Awvg1 Generator Module; Getting Started - Tektronix AWVG1 User Manual

Getting Started

CPU Bus
Clock/Frame
Reset Bus

Figure 1- 1: Simplified block diagram of the AWVG1 Generator module

AWVG1 Wideband Video Generator User Manual
The AWVG1 Wideband Video Generator module is designed to be installed in
the TG 2000 Signal Generation Platform.
The module generates wideband analog signals for use in television systems.
This 30 MHz bandwidth generator is capable of 12-bit precision. The primary
function of the module is to provide zone plate and sweep signals. Disks
containing test signal libraries for these types of signals are provided with this
manual.
See Figure 1- -1 for a diagram of the module's internal structure.
Video
Pattern
Module
Memory
NVRAM
Module
Flash
Memory
Module
Delay
Generator
Module
Burst
Clocks
Generator
The module is a single-channel generator, which outputs either the internally
generated signal or an analog video signal from the rear-panel input on its three
output connectors. The rear-panel input is provided for convenience of operation
so that the output signal can be switched between the internally generated signal
and the external signal, which can come from another source, such as the AVG1
Generator module. There is no loop-through of the external signal when the
module output is disabled or when the power is off.
For internally generated signals, output signal data is obtained from either the
signal memory or the zone plate generator. The basic signal contains luminance
information only, so burst is generated and multiplexed in at the appropriate
time.
The module's memory architecture is run-length encoded. This allows signals
that have redundancy to occupy a smaller space, or conversely more complex
Amplitude
Control
Video
Amplitude
Sine wave
Zone
Plate
Mux
DAC
and
Filter
Wideband
Analog Video
(three outputs)
Analog
Video Input
1- 1