User Manual

USB-4711A User Manual 18
3.4 Analog Output Connections (Voltage)
USB-4711A provides two analog output channels, AO0 and AO1. Figure
3-3 shows how to make analog output connections on USB-4711A.
Figure 3.4: Analog Output Channel Connections
3.5 Trigger Source Connections
3.5.1 Internal Pacer Trigger Connection
USB-4711A provides two 16-bit counters connected to a 10 MHz clock.
Counter 0 is a counter that counts events from an input channel. Counter
1 is a 16-bit timer for pacer triggering. A low-to-high edge from the
Counter 1 output will trigger an A/D conversion on USB-4711A.
3.5.2 External Trigger Source Connection
In addition to pacer triggering, USB-4711A also allows external trigger-
ing for A/D conversions. When GATE is connected to a +5V DC source,
the external trigger function is thereby disabled. And the external trigger
function will be enabled once the +5V DC source is removed.