Measurement Computing USB-2416-4AO - Manual (Page 37)

USB-2416-4AO User's Guide Specifications
37
Analog voltage output
Unused VDACx output channels should be left disconnected.
The USB-2416-4AO output voltage level defaults to 0 V whenever the host PC is reset, shut down or
suspended, or if a reset command is issued to the device.
The duration of the output transient depends highly on the enumeration process of the host PC. Typically, the
output of the USB-2416-4AO is stable after two seconds.
Table 20. Analog voltage output specifications
Parameter Conditions Specifications
Digital-to-analog
converter DAC8555
Number of channels 4
Resolution 16 bits
Output ranges Calibrated ±10 V
Uncalibrated ±10.05 V, software configurable
Output transient Host PC is reset, powered on, suspended or a reset
command is issued to device (refer to the output
transient discussion above) Duration: 2 s
Amplitude: 2 V p-p
Initial power on Duration: 50 ms
Amplitude: 5 V peak
Differential
non-linearity ±0.25 LSB typical
±1 LSB maximum
Output current VDACx pins ±3.5 mA maximum
Output short-circuit
protection VDACx connected to AGND Unlimited duration
Output coupling DC
VDACx readback Each VDACx output can be
independently measured by the onboard
A/D converter.
Software selectable
Power on and reset
state DACs cleared to zero-scale: 0 V,
±50 mV
Output noise 30 µVrms
Settling time To rated accuracy, 10 V step 45 µs
Slew rate 1.0 V/µs
Throughput Single-channel 1000 S/s maximum, system-dependent
Multi-channel 1000 S/s / #ch maximum, system-
dependent
Table 21. Calibrated absolute accuracy specifications
Range Accuracy (±LSB)
±10 V 16.0
Table 22. Calibrated absolute accuracy components specifications
Range % of reading Offset (±mV) Temp drift (%/°C) Absolute accuracy at FS (±mV)
±10 V ±0.0183 1.831 0.00055 3.661
Table 23. Relative accuracy specifications
Range Relative accuracy (±LSB)
±10 V 4.0 typical