28.2 Data Acquisition Section (HLV800-256AV & HLV1000-256AV Only)

Analog Inputs
Number of input channels	16 single-ended or 8 differential voltage inputs (software selectable)
Resolution	16 bits (1/65,536 of full scale)
Input ranges	Bipolar: ±10V, ±5V, ±2.5V, ±1.25V Unipolar: 0-10V, 0-5V, 0-2.5V, 0-1.25V
Input bias current	50nA max
Maximum input voltage	±10V for linear operation
Over-voltage protection	±35V on any input without damage
Drift	±10ppm/oC typical
A/D conversion rate	250,000 samples/second maximum
Conversion trigger	Software trigger Internal pacer clock External digital signal
FIFO	2048 samples Programmable interrupt threshold

Analog Outputs
Number of output channels	8 voltage outputs
D/A resolution	12 bits (1/4096 of full scale)
Output ranges	Unipolar: 0-10V, 0-5V Bipolar: ±10V, ±5V, ±2.5V
Output current	±5mA max per channel
Settling time	4µS max to ±1/2 LSB
Relative accuracy	±1 LSB channel to channel
Nonlinearity	±1 LSB, monotonic

Digital I/O J	J17 Ports A, B, C	17 EXTTRIG, TOUT1
Number of I/O lines	24	2
Compatibility	3.3V and 5V logic levels	3.3V and 5V logic levels
Input voltage	Low: 0V min, 0.8V max High: 2.0V min, 4.25V max	Low: -0.3V min, 1.34V max High: 1.74V min, 4.25V max
Input current	+/-10μA max	+/-1μA max
Output voltage	Low: 0.0V min, 0.4V max High: 2.9V min, 3.3V max	Low: 0.0V min, 0.7V max High: 2.2V min, 3.1V max
Output current	Low: 12mA max High: -12mA max	Low: 8mA max High: -8mA max

Counter/Timers
A/D pacer clock	24 bit down counter 10MHz, 1MHz, or external clock input
General purpose	16-bit down counter 10MHz, 100KHz, or external clock input