Black Box 2 x 1 and 4 x 1 HDMI Video Switches, AVSW-HDMI4X1, AVSW-HDMI2X1A 200 ±20 mm DB9 F Pinout

Chapter 4: Operation

2 3

1 4

200 ±20 mm

3.5

1 6

DC 2.5

5 9 DB9 F

Pinout

DC 2.5 DB9 F

1— ————————— 3

2— ————————— 2

3— ————————— 8

4— ————————— 5

— ———— S

Figure 4-5. DB9 to 2.5-mm cable pinout.

4.4 Function Button (AVSW-HDMI4X1A Only)

The Function button adjusts the optimal video signal strength corresponding to the length or quality of DVI cable.

To adjust the video signal strength, follow these steps:

1.Press the Function button three times.

2.Press push button #1 one or two times to adjust the selected port’s input video strength. One beep = normal or two beeps = enhance.

or

Press push button #3 one or two times to adjust the selected port’s output current. One beep = normal or two beeps = enhance.

or

Press push button #4 one, two, three, or four times to adjust the selected port’s output emphasis. One beep = no pre-emphasis, two beeps = low pre- emphasis, three beeps = medium pre-emphasis, or four beeps = high pre- emphasis.

3.Once the setting is finished, press the Function button one time to exit the setting.

AVSW-HDMI2X1A 724-746-5500 blackbox.com Page 19