Before Beginning Image Creation; Video Signal Flow - Sony DVS-7300 User Manual

Before Beginning Image Creation

Before considering the operations of image creation proper, this section
describes how the various video sources are combined to produce the final
program output.
For an explanation of the terms "3.5-M/E" and "3-M/E", see page 1-2.

Video Signal Flow

The DVS-7300/7350 I/O expansion system has three mix/effects banks and,
depending on the system, a program/preset bank and downstream keyer.
Final program output
Strictly speaking, it is possible to distinguish the "switcher program output"
from the "system program output", as follows.
Switcher program output
This refers to the signal output from the PGM OUTPUTS connectors on the
switcher unit. Which signal is output depends on the system as follows:
3.5-M/E systems: the program output signal (PGM) on the PGM/PST bank.
3-M/E systems: the output signal from the final M/E bank. Use a setup
menu operation to select which M/E bank this is (see page 14-10).
System program output
This again depends on the system. Unless otherwise noted, in this manual,
"program output" normally refers to the system program output.
3.5-M/E systems: the program output signal from the PGM OUTPUTS
connectors on the downstream keyer (DMK-7000 Digital Multi Keyer).
Use the downstream keyer control section (included in the PGM/PST
bank) to control this signal.
3-M/E systems:
• In a 3-M/E system equipped with a downstream keyer, the program
output signal from the PGM OUTPUTS connectors on the downstream
keyer. Use the downstream keyer control unit installed in the control
panel (the optional BKDS-7032 DSK Control Panel Unit) to control
this signal.
• In a 3-M/E system not equipped with a downstream keyer, the program
output signal from the PGM OUTPUTS connectors on the switcher
unit. In such a system, therefore, the switcher program output and
system program output signals are the same.
Chapter 4 Basic Operations for Image Creation
4-3