Quick Start Guide — DA AV EQ Series, cont’d
Step 4
Connect the cables of the input and output devices to the DA AV EQ, and power on all equipment.
•
•Composite video devices are connected to BNC connectors.
Audio devices are connected to captive screw or RCA connectors.
Step 5
Adjust the potentiometers (pots) for the output cable lengths, if necessary.
•If using very short output cables, make sure that the potentiometers are in the unity gain position; that is, with the arrow on each pot pointing to the dot beside or above the pot.
If the pots are already in the unity gain position (factory default settings), DO NOT CHANGE THEM. If they are not in the unity gain position, rotate them into position, using an Extron Tweeker. The illustration below shows the pots for outputs 1 and 2 at the unity gain position.
1/2 | 1/2 |
|
GAIN EQ | Y | C |
| GAIN EQ | GAIN |
Composite Video Models |
Potentiometers at unity gain setting
•If using long cables, follow these steps to adjust the pots:
a. | Supply the Color Bars test signal to the input. |
| (Recommendation: Use an Extron VTG 300 Video Test |
| Generator to generate the test signal.) |
b. | Adjust the Gain pot(s) for output pair 1 and 2 until the |
| signal level at the far end is the same as the input (or the |
| display shows the correct brightness and contrast). |
c. | Adjust the EQ pot for outputs 1 and 2 so that no overshoot |
| or round front corners appear at the far end on the scope |
| (or until you see a sharp picture with no smearing). |
d. | Repeat steps b and c for the rest of the outputs. |
Table of Contents
Chapter 1 • Introduction | |
About this Manual | |
About the DA AV EQ Series | |
Models | |
Features | |
Application diagrams | |
Chapter 2 • Installation and Rear Panel | |
Mounting the DA AV EQ Series | |
Tabletop use | |
Rack mounting | |
UL rack mounting requirements | |
Rack mounting procedure | |
Furniture mounting | |
Rear Panel Features and Cabling | |
Setting the Audio Output Gain | |
Chapter 3 • Front Panel Features and Operation ... | |
Front Panel Features | |
Gain and Equalization Controls | |
Settings for short cables | |
Adjusting for long cables | |
Adjusting with an oscilloscope | |
Adjusting without an oscilloscope | |
Appendix A • Specifications, Parts, and |
|
Accessories | |
Specifications | |
Models | |
Included Parts | |
Optional Accessories | |
Cables |
All trademarks mentioned in this manual are the properties of their respective owners.
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DA AV EQ Series • Quick Start Guide | DA AV EQ Series • Table of Contents | i |