Extron electronic TP R 15HD A, TP R AV Troubleshooting, If the image does not appear, Power LED

Installation and Operation, cont’d

Front Panel Controls and Indicators

The TP R BNC A and TP R BNC AV have similar controls and indicators (figure 2-12). The TP R 15HD A has a reduced set of controls (figure 2-13).

1	2	3	4	5
		VIDEO
		MANUAL
		LEVEL		PEAKING
		AUTO
		RGB
		MANUAL
		LEVEL		PEAKING
		AUTO		TP R BNC AV
Figure 2-12 — TP R BNC AV control and indicators
1		4	5

RGB

LEVEL PEAKING

TP R 15HD A

Figure 2-13 — TP R 15HD A control and indicators

1Power LED

Amber — indicates that power is applied, but that the transmitter is not connected to a receiver.

On the TP R BNC AV only, and only if the composite video TP link is used and the RGB link is not used, this LED will only light amber.

Green — indicates that a transmitter is connected and any of the following grounding conditions exist:

•The transmitter is powered by a local power supply and the receiver’s output is connected to a device that provides a reference ground.

•The transmitter is powered by the receiver, is locally grounded, and the receiver’s output is connected to a device that provides a reference ground.

•The transmitter is receiving power from the receiver, a local monitor is connected to the transmitter, and the receiver’s output is connected to a device that provides a reference ground.

•The receiver is connected to a TP switcher that is connected to a device that provides a reference ground.

2Manual/Auto switch (TP R BNC A and TP R BNC AV) — With this switch in the Auto position, the receiver automatically adjusts the level and peaking to compensate for long cable runs. In the Manual position, you can manually compensate for long cable runs using the level and peaking controls.

3Auto LED (TP R BNC A and TP R BNC AV) — Indicates that the Manual/Auto switch is in the Auto position.

4Level control — Adjusts the image brightness.

5Peaking control — Adjusts the image sharpness.

For details on the SOG and C SYNC switches, see

Computer video earlier in this chapter.

Troubleshooting

If the image does not appear

1.	Ensure that all devices are receiving power. The
	transmitter’s and receiver’s front panel Power LEDs
	indicate that they are receiving power.
2.	Ensure that the transmitter is receiving a video input.
3.	Ensure that the TP cable(s) are properly terminated in
	accordance with TIA/EIA T 568A standards and that the
	RJ-45 connections are securely made. If the Power LEDs
	on the transmitter and the receiver are lit green, a
	transmitter is properly connected to a receiver.
4.	For computer/RGB video, ensure that the receiver’s SOG
	and C Sync switches are in the correct positions for the
	video output.
5.	For computer video, ensure that the transmitter’s ID bit
	switches are on.
6.	For computer video on an LCD projector, ensure that the
	transmitter’s DDSP switch is on.

7.The transmission distance may be too far for remote power. Try connecting the local 15V power supply to the transmitter.

8.The transmission distance may be too short. Ensure that the UTP cable is at least 50 feet long.

9. If the Manual/Auto switch is in the manual position, ensure that the receiver’s level controls are not set too high. Too much level and peaking can cause display problems.

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