Measurement Computing USB-1808X, Руководство пользователя

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USB-1808X User's Guide Specifications
20
Analog output
Table 5. Analog output specifications
Parameter Condition Specification
Number of channels 2
Resolution 16 bits
Output ranges Calibrated ±10 V
Output transient Host computer is reset, powered on,
suspended, or a reset command is issued
to the device
Duration: 5 ms
Amplitude: 2 V p-p
Powered off from 0 V output Duration: 20 ms
Amplitude: 5 V p-p
Differential non-linearity ±0.25 LSB typ
±1 LSB max
Output current AOUTx pins ±3.5 mA max
Output short-circuit protection Single AOUTx channel connected to
AGND
Unlimited duration
Output coupling DC
Power on and reset state DACs cleared to zero-scale: 0 V, ±50 mV
Output noise 100 µVrms
Trigger source

OTRIG (see External trigger on page
24)

Digital pattern detection (see Pattern
trigger
on page 24)
Scan clock source Internal output scan clock or external
output scan clock (OCLKI pin)
Output update rate 0.023 Hz to 500 kHz per channel
Slew rate 15 V/µS
Throughput Software paced 33 S/s to 8,000 S/s typ, system-dependent
Hardware paced 1,000 kS/s max, system-dependent
Note 1: Leave unused AOUTx output channels disconnected.
Note 2: AOUTx defaults to 0 V whenever the host computer is reset, powered on, suspended, or a reset command is
issued to the device.
Table 6. Calibrated absolute accuracy specifications
Range Absolute accuracy (±LSB)
±10 V 16
Table 7. Calibrated absolute accuracy components specifications
Range % of
reading
Offset
(±mV)
Offset tempco
(µV/°C)
Gain tempco
(ppm of range/°C)
±10 V 0.0183 1.831 4.7 9.4
Table 8. Relative accuracy specifications (±LSB)
Range Relative accuracy (INL)
±10 V 1.0