HP MPEGscope User Manual download pdf (Page 26)

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.

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.

Parallel

TRIG OUT (pin 2)

TRIG IN (pin 10)

Ground (pin 19)

Trigger Type:

TRIG IN

: active low, edge-sensitive

TRIG OUT

: active high, ~10 ms pulse width

Connect your external equipment

to MPEGscope’s parallel port using

a cable with a 25-pin D-type male

connector.

DB-25 connector

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HP MPEGscope User Manual Page 26