NI 5442
Output Enable

You can disable the analog output signal at the CH 0 connector by controlling the output enable relay, as shown in the following figure.

When the Output Enable relay is disabled, the output signal is connected to ground through a 50 or 75 Ω resistance depending on the output impedance selected. The Output Enable relay is enabled for normal waveform generation, connecting the CH 0 SMB connector to Analog Output path. You can change the output enable state at any time during waveform generation, and the generation continues on internally.

Refer to the niFgen Output Enable VI or the niFgen_ConfigureOutputEnabled function for more information about enabling the output.

Note   The signal generator uses mechanical relays to switch between the output enable states. When you change a setting that causes a relay to switch, electromechanical relay bouncing interrupts the output signal for up to 10 ms.