Tektronix ECO422D, Instruction Manual

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Getting Started
ECO422D SD/HD Changeover Unit Instruction Manual
1- 13
Functional Check and First Time Operation
This section steps through how the ECO422D will react under its most common
operating circumstances: two good signals, loss and then return of the Primary
signal, loss and return of the Backup signal, and loss of power. Only two input
signals are used here to avoid confusion.
For more details on the controls, what they do, and how they interact, see
Operating Basics , Section 2.
To check out the entire instrument, repeat these procedures for each of the eleven
sets of inputs and outputs.
Power down all instruments.
Connect the ECO422D as shown in Figure 1--10.
BG7
ECO422D
Black without setup
Black with setup
Monitor (optional)
Monitor (optional)
Figure 1- 10: Setup for the functional check
Set all of the DIP switches (S1 - S11) to open, except for S1-1, which should be
set to closed (NTSC black burst). Note that Primary input is black burst without
setup and the Backup input is black burst with setup. (This is just to illustrate
which signal is the Output.)
Two Good Signals