Measurement-computing E-1608 Manuel d'utilisateur télécharger pdf (Page 23)

E-1608 User's Guide Specifications

Parameter

Specification

Input high voltage threshold

2.0 V min

Input high voltage limit

5.5 V absolute max

Input low voltage threshold

0.8 V max

Input low voltage limit

–0.5 V absolute min

0 V recommended min

Output high voltage

3.8 V typ at no load

3.0 V min (IOH = –3 mA)

2.0 V min (IOH = –32 mA)

Output low voltage

0.15 V typ at no load

0.55 V max (IOL = 64 mA)

Power on and reset state

Input

Note 5: This is the typical throughput when the device and host are both connected by Ethernet to the same

local network. The throughput can vary significantly, and typical throughput is not guaranteed if a

wireless connection is involved or data is sent over the internet.

External trigger

Table 11. External trigger specifications

Parameter

Condition

Specification

Trigger source

External digital

TRIG

Trigger mode

Software-selectable

Edge or level sensitive: user configurable for CMOS

compatible rising or falling edge, high or low level.

Trigger latency

2 µs + 1 pacer clock cycle max

Trigger pulse width

1 µs min

Input type

Schmitt trigger, 47 kΩ pull-down to ground

Schmitt trigger hysteresis

1.01 V typ

0.6 V min

1.5 V max

Input high voltage threshold

2.43 V typ

1.9 V min

3.1 V max

Input high voltage limit

5.5 V absolute max

Input low voltage threshold

1.42 V typ

1.0 V min

2.0 V max

Input low voltage limit

–0.5 V absolute min

0 V recommended min

External clock input/output

Table 12. External clock I/O specifications

Parameter

Specification

Terminal names

AICKI, AICKO

Terminal types

AICKI: Input (receives A/D pacer clock from external source)

AICKO: Output (outputs internal A/D pacer clock)

Input clock rate

250 kHz max

Clock pulse width

AICKI: 1 µs min

AICKO: 1.8 µs min

Clock mode

Edge-sensitive, rising

Input type

Schmitt trigger, 47 kΩ pull-down to ground

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 29

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Measurement-computing E-1608 Manuel d'utilisateur Page 23

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