Extron electronic manual USP 405 Installation and Operation, Timing Source, To Scope Probe B

An oscilloscope is required for genlock setup, and a vectorscope is recommended. Waveform monitors of types other than a vectorscope may give the appearance that timing is adjusted correctly when it is 180 degrees out of phase. This results in incorrect colors or picture artifacts.

To synchronize the USP 405’s video output with a genlock signal, follow these steps:

All equipment in the system must be powered up and turned on for at least 15 to 20 minutes before genlock setup adjustments can be made and before the equipment is used in a genlocked application.

1. Power up and turn on all the devices that will use the genlock signal. The devices must be on for at least 15 to 20 minutes before proceeding with any adjustments.

2. Connect the active timing source signal to the Genlock In connector on the rear panel.

3. Connect the video input signals to the USP 405, as described previously in this chapter.

4. Connect the oscilloscope (“scope”) probe A to the Genlock Out connector. This provides the scope’s reference signal. In order to avoid altering the genlock signal, use the cabling configuration that will be used in the installation. Either connect the genlock signal cable from the scope to the next device in the system to be timed, or provide 75 ohm termination at the scope’s genlock output.

Timing Source

OUT

To Scope Probe B

O U T P U T S

VID	R-Y	SDI					IN
			R	G	B	G
			/R-Y	/Y	/B-Y	NE
B-Y	Y		RGB/R-Y, B-Y, Y			L	REMOTE
						O	OUT
			H	V	S	C
						K
R-Y, B-Y, Y		S-VIDEO	RGB/HD R-Y, B-Y, Y

75 ohm Terminator

To Scope

Probe A

5. Connect scope probe B to the USP 405’s composite video output connector.

6. Using the instructions for the scope you are using, set the scope to view the signal’s horizontal phases. Adjust the horizontal phase by rotating the horizontal Adjust () knob (see the “Genlock Menu” section in this chapter). Adjust the horizontal phase until there is no (0°) difference between the composite video output’s horizontal sync phase and the genlock signal’s horizontal phase. See the “Oscilloscope displays” section in this chapter.

7. Set the scope to view the subcarrier signals. Adjust the sub phase by rotating the vertical Adjust () knob until there is a zero phase difference between the genlock signal and the NTSC/PAL output (see the “Genlock menu” section in this chapter).

USP 405 • Installation and Operation 2-9