Measurement Computing E-1608-OEM - Manual (Page 17)

E-1608-OEM User's Guide Functional Details
17
Figure 6. W3 jumper configurations
For more information about digital signal connections
For general information about digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections (available on our web site at
www.mccdaq.com/signals/signals.pdf ).
Trigger input
The TRIG connector is an external digital trigger input. The trigger mode is software selectable for edge or level
sensitive.
 Edge sensitive mode is configurable for rising or falling edge.
 Level sensitive mode is configurable for high or low level.
The default setting at power up is edge sensitive, rising edge.
Counter input
The CTR connector is a 32-bit event counter that can accept frequency inputs up to 10 MHz. The internal
counter increments when the TTL levels transition from low to high.
Power output
The +VO connector can output up to 10 mA maximum. You can use this connector to supply power to external
devices or circuitry.
Ground
The analog ground ( AGND ) connectors provide a common ground for all analog channels.
The digital ground ( GND ) connectors provide a common ground for the digital, counter, timer, and clock
channels and the power connector.