Data Translation DT3145, Руководство по началу работы

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Installing the Board and Configuring the Device Driver
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• TTL-level signal – The trigger is a TTL-level signal of 0 to 5 V
maximum. This trigger position is useful if your application
requires more accurate or faster trigger timing than provided by
the isolated signal (for example, if you are using one trigger per
line for a line-scan operation).
To configure the trigger selection jumper, if necessary, perform the
following steps:
1. Discharge any static electricity by holding the wrapped board in
one hand while placing your other hand firmly on a metal
portion of the computer chassis.
2.
Carefully remove the antistatic packing material from the board.
(It is recommended that you save the original packing material in
the unlikely event that your board requires servicing in the
future.)
3. If you want to use an isolated signal, leave the trigger selection
jumper in the default, W1 position.
If you want to use a TTL-level signal, move the trigger selection
jumper to the W2 position. Refer to
Figure 2 .
CAUTION:
The external trigger input accepts a TTL-level signal of 0 to 5 V
maximum. To prevent damaging your DT3145 board, make sure
that the TTL signal is no greater than 5 V.