Measurement-computing miniLAB-1008 Manual de usuario descargar pdf (Pagina 29)

miniLAB 1008 User's Guide Specifications

Digital input / output (screw terminal DIO3:0)

Parameter Conditions Specification

Digital type Discrete, 5V/TTL compatible

Number of I/O 4

Configuration

4 bits, independently programmable for

input or output.

Input high voltage 3.0 V min, 15.0 V absolute max

Input low voltage 0.8 V max

No load Vs - 0.4 V min, Vs typ Output voltage (Note 4)

1 mA load Vs - 1.5 V

Input leakage current ±1.0 µA

Output short-circuit current (Note 4) Output high 3.3 mA

Power-up / reset state Input mode (high impedance)

Note 4: The DIO[3:0] lines available at the screw terminals are protected with 1.5 KOhm series resistors.

Digital input / output (DB37)

Digital type 82C55

Number of I/O 24 (Port A0 through Port C7)

Configuration 2 banks of 8 and 2 banks of 4, or 3 banks of 8

Pull up/pull-down configuration

All pins pulled up to Vs via 47K resistors (default). Positions available

for pull down to ground. Hardware selectable via zero ohm resistor.

Input high voltage 2.0 V min, 5.5 V absolute max

Input low voltage 0.8 V max, –0.5 V absolute min

Output high voltage (IOH = -2.5 mA) 3.0 V min

Output low voltage (IOL = 2.5 mA) 0.4 V max

External trigger

Parameter Conditions Specification

Trigger source External digital DIO[3:0], only DIO may be selected as a trigger input

Trigger mode Software selectable Level sensitive: user configurable for TTL level high or low input.

Trigger latency Burst 25 µs min, 50 µs max

Trigger pulse width Burst 40 µs min

Input high voltage 3.0 V min, 15.0 V absolute max

Input low voltage 0.8 V max

Input leakage current ±1.0 µA

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Measurement-computing miniLAB-1008 Manual de usuario Pagina 29