HP MPEGscope manual Connecting an External Trigger Cable, Setup dialog for instructions

Connecting an External Trigger Cable

You can use a trigger cable with a 25-pin D-type male connector to connect your external equipment to MPEGscope’s parallel port. The illustration below shows MPEGscope’s parallel printer port female external pin layout.

	Trigger Type:
	TRIG IN:	active low, edge-sensitive
	TRIG OUT: active high, ~10 ms pulse width
25	13
		TRIG IN (pin 10)
Ground (pin 19)		Parallel
14	1	TRIG OUT (pin 2)

DB-25 connector

Connect your external equipment to MPEGscope’s parallel port using a cable with a 25-pin D-type male connector.

Note	Before you can send or receive an external trigger, you must also configure
	MPEGscope software from the Recorder/Player’s Record Setup dialog, then shut
	down the default NT parallel port drivers and start the HP parallel port driver
	from the Windows® NT Control Panel. Press the Help button from the Record
	Setup dialog for instructions.
	For more information on configuring MPEGscope software to send or receive an
	external trigger, refer to the MPEGscope online help system. Press the Tips
	button at the MPEGscope Launch Pad, select the Index tab, and type “triggers”
	to see the list of relevant topics.