Installation guide

Connecting Trigger/Counter Signals

Use the BNC-2110 BNC connectors on the front panel to connect PFI 0/P1.0 (AI START TRIG) and

PFI 12/P2.4 (CTR 0 OUT) signals to your DAQ device. The number of connectors you use depends on

your DAQ device and application. Refer to your DAQ device documentation for information about the

use of these signals. Table 2 describes the trigger/counter BNCs.

Connecting Digital and Timing I/O Signals

Use the BNC-2110 spring terminal block on the front panel to connect digital and timing I/O signals to

your DAQ device. Refer to your DAQ device documentation for information about the use of these

signals.

When connecting signals to the spring terminals, you can use 28–16 AWG wire with the insulation

stripped to 0.28 in.

Table 3 describes the digital terminals on the front panel of the BNC-2110.

Table 2. Trigger/Counter Signal Descriptions

BNC Description

PFI 0/P1.0 Programmable Function Input channel 0 or Port 1 Digital Input/Output channel 0

AI START TRIG (AI Start Trigger Signal)—As an output, this pin is the ai/StartTrigger

signal. In post-trigger DAQ sequences, a low-to-high transition indicates the initiation of

the acquisition sequence. In applications with pre-trigger samples, a low-to-high transition

indicates the initiation of the pre-trigger samples.

PFI 12/P2.4 Programmable Function Input channel 12 or Port 2 Digital Input/Output channel 4

CTR 0 OUT (Counter 0 Output Signal)—As an input, this pin can be used to route signals

directly to the RTSI bus. As an output, this pin emits the Ctr0InternalOutput signal.