Measurement Computing USB-1602HS-2AO - Manual (Page 40)

USB-1602HS-2AO User's Guide Specifications
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Analog input calibration
Table 8. Analog input calibration specifications
Parameter Specification
Recommended warm-up time 15 minutes minimum
Calibration methods Software system calibration and self-calibration
Self-calibration yes
System calibration interval 1 year
System calibration references +8.192 V, +2.048 V, +0.4096 V ±5 mV.
Actual measured values stored in EEPROM
Tempco: 5 ppm/°C maximum
Long term stability: 30 ppm/1000 h
Digital inputs
Table 9. Digital input specifications
Parameter Specification
Number 16 inputs (DIN0-DIN15)
Digital type 3.3V CMOS (5V tolerant)
Digital input transfer rate (H/W-paced) Up to 8 MHz — DIO-only operation
2 MHz — if configured for AI operations
Input high voltage 2.0 V minimum, 5.5 V maximum
Input low voltage 0.8 V maximum, 0 V minimum
Absolute maximum input voltage 15 V (power-on and power-off conditions)
DIN pacing On-board or external clock (XAPCR)
Pacer sources
 Internal pacer clock or external digital source (XAPCR or EXT CLK BNC).
 External pacer clock (XAPCR or EXT CLK BNC)
See Table 12 for additional information.
DIN trigger modes and sources See Table 11
Input pull-ups 100 kΩ (consult factory for alternative options)
Latency, software paced 115 ms, typical (system dependant)
Digital outputs
Table 10. Digital output specifications
Parameter Specification
Number 16 outputs (DOUT0-DOUT15)
Digital output rate 8 MHz maximum if no analog outputs are enabled, (1 MHz maximum if analog
outputs are enabled)
Digital type 3.3 V CMOS
Output high voltage (IOH = –2.5 mA) 2.4 V minimum, 3.4 V maximum
Output low voltage (IOL = 2.5 mA) 0.4 V maximum, 0 V minimum
Output current 2.5 mA maximum per pin
DOUT pacing On-board or external clock (XDPCR)
Pacer sources
 Internal pacing
 External pacing
 Pacing slaved to analog input pacing
See table 12 for additional information.
Outputs at power on and reset Low
Latency, software paced 115 ms, typical (system dependant)