Installation
The Extron P/2 DA1 is a one input, one output VGA line driver. It boosts the video signal between a laptop or desktop computer (input device) and a monitor or large screen projector (output device).
Features
•The P/2 DA1 accepts and outputs VGA, XGA, SXGA, RsGsBs, RGsB, RGBS, and RGBHV signals.
•The gain/peaking switch increases video signal voltages to compensate for signal degradation caused by long cables.
Installation
To install the P/2 DA1, do the following:
1.Turn off power to the input and output devices and unplug their power cords.
2.Connect the computer to the
3.Connect the output device to the
4.Reattach power cords, and apply power to the P/2 DA1 and to the input and output devices.
Many laptop computers have an external video port, but they require special commands to output the video to that connector. Also, many laptops’ screens shut off after the port is activated. See the computer’s user’s guide for details, or contact Extron for a list of laptop keyboard commands.
Operation
To computer
VGA IN
1
2
POWER
3 SIGNAL
| GAIN/PEAKING |
4 | NORMAL |
MEDIUM | |
MAXIMUM |
6
5
VGA OUT
To display device
115-pin HD input connector
2Power LED — Lights to indicate that the P/2 DA1 is on.
3Signal LED — Lights to indicate that an input signal is being received.
4Gain/peaking switch — Compensates for cable resistance and capacitance.
Normal — Output is the same level as input.
Medium — 50% of the total gain is applied. Peaking is applied.
Maximum — 100% of the total gain is applied. Peaking is applied.
If the signal cable between the P/2 DA1 and the output device is shorter than approximately 125 feet, and the gain switch is set to Medium or Maximum, the image may be overcompensated. If the edges of the image seem to exceed their boundaries, or if thin lines and sharp edges look thick and fuzzy, try changing the gain/peaking setting.
5
6Power supply —
Specifications
Video
Gain | 0 dB, 0.6 dB, 1.2 dB, selectable: when input is |
| 0.7 |
| when switch is at normal, medium, and |
| maximum positions, respectively |
Bandwidth | 300 MHz |
| Note: ID bits will be passed through. |
Video input
Number/signal type | 1 |
Connectors | (1) |
Nominal level | 0.7 |
Minimum/maximum levels | Analog: 0.3 VDC to 1.5 VDC |
| offset at unity gain |
Impedance | 75 ohms |
Horizontal frequency | 15 kHz to 135 kHz |
Vertical frequency | 30 Hz to 170 Hz |
Video output
Number/signal type | 1 |
Connectors | (1) |
2 | P/2 DA1 Installation and Operation | P/2 DA1 Operation and Specifications | 3 |