Installation and Operation, cont’d
If shielded
signal. For example, the input signals from the left side of channel one (CH1L) are output as CH1L+ and
To prevent short circuits, unused shielded
| L |
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| |
Channel 1 | GND | |||
| R |
|
| |
|
| |||
Channel 2 | L |
|
| |
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GND |
R
Female
Captive Screw
Connector
L | Channel 1 | |
GND | from Audio L, R | |
RCA | ||
| ||
R | Connectors | |
L | Channel 2 | |
GND | from PC | |
3.5mm | ||
| ||
R | Connector | |
Male | Circuit Board | |
Base |
|
electrical tape or heat shrink, and secured.
Connect coaxial cables’ shields to a ground through the individual connectors (BNC,
Connecting audio cables — RGB 404
The RGB 404 creates two
•Audio channel one (CH1) consists of unbalanced input on two RCA input connectors (one each for left and
| right input), and balanced output |
| on pins 1 – 5 of the |
Tip Sleeve ( ) | captive screw connector on the rear |
| of the circuit board. Wire the RCA |
input plugs as shown at left.
•Audio channel two (CH2) consists of unbalanced left and right input from the single
Tip (+) | Sleeve (GND) |
Ring (R,
Tip (L, +)
Sleeve (GND)
The audio signals are converted from unbalanced to balanced signals as they pass through the RGB 404. As a result, two output signals are produced for each input
Wiring RGB 404 audio connectors
To wire the audio output captive screw connector, follow these steps:
1.Prepare the wires for insertion into the connector by trimming off 3/16 inch of insulation.
2.Following the wiring diagram found on the label on the back of the faceplate or in this manual, insert the wires one at a time into the connector.
3.Tighten the wire clamp in the connector by turning the appropriate screw clockwise. Do not overtighten the screw. Avoid touching circuit board components with the ends of the wires. See the illustration below.
Ground/Shield
| Ground/Shield |
Base |
|
Circuit Board | Circuit Board |
RGB 404 | RGB 406 and RGB 408 |
Wiring audio output captive screw connectors
4.The cable shields should be connected to either pins 3 and 8 (RGB 404) or pin 3 (RGB 406/408) of the audio
RGB 400 Series • Installation and Operation |