3. External Connection
AD12-8(PM)
43
Digital I/O signals and Control signals
Connection
This section shows an example of how to connect digital I/O signals and the control signals (external
sampling clock input signals) using flat cable.
Connect the interface connector and external device using a cable such as a separately purchased flat
cable (PCA37P).
All the digital I/O signals and control signals are TTL level signals.
Input
Digital Ground
CARD
Connector
Cable
Target
Figure 3.8. Digital Input and external sampling clock Connection
Digital Ground
CARD
Connector
Cable
Target
Output
I
OL
=8mA
Figure 3.9. Digital Output Connection
CAUTION
Do not short the output signals to analog ground, digital ground, and/or power line. Doing so may
damage the PC card.