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
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| VIDEO |
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| MANUAL |
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| LEVEL |
| PEAKING |
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| AUTO |
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| RGB |
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| MANUAL |
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| LEVEL |
| PEAKING |
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| AUTO |
| TP R BNC AV |
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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, seeComputer 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 |
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| 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.
| TP Receivers • Installation and Operation |