Example:
If 9 channels are being scanned at a rate of 100Hz and the slope is low to high, the trigger signal must remain below the trigger level for 9/100 of a second, and above the trigger level for 9/100 of a second to ensure that a trigger event occurs. When using External Input as the trigger, this restriction does not apply.
When using an analog input channel for triggering, analog output channel 1 is used to set the trigger level.
Note: Do not use analog output channel 1 for any other purpose while analog triggering is in use.
Due to the internal configuration of the unit, the voltage appears on the analog output 1 pin as the negative value of the desired trigger voltage. Connecting this pin to another signal, or shorting it out causes the trigger voltage to be incorrect.
Auto Zero
When in auto zero mode, the inputs to the Analog input circuit are internally grounded, disabling the input multiplexers. This enables a known 0 volt signal to be measured, and the value read can be used to compensate for input offset errors.
Analog Output
The UDAS device has two analog output channels. Each output channel has
This FIFO can be used as a circular buffer for either or both analog output channels to allow repetitive waveform generation and supports waveforms of up to 512 points (single channel) or 256 points (dual channel). The unit also supports
When the unit is
Analog output channel 1 is also used to support the analog trigger function for
Digital I/O
The digital data acquisition circuit consists of two
