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Counter, Memory – Measurement Computing E-1608 User Manual

Page 24

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E-1608 User's Guide

Specifications

24

Parameter

Specification

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

Output high voltage

4.4 V min (IOH = –50 µA)
3.80 V min (IOH = –8 mA)

Output low voltage

0.1 V max (IOL = 50 µA)
0.44 V max (IOL = 8 mA)

Counter

Table 13. Counter specifications

Parameter

Specification

Pin name

CTR

Counter type

Event counter

Number of channels

1

Input type

Schmitt trigger, 47 kΩ pull-down to ground

Input source

CTR screw terminal

Resolution

32 bits

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

Input frequency

10 MHz max

High pulse width

50 ns min

Low pulse width

50 ns min

Memory

Table 14. Memory specifications

Parameter

Specification

Data FIFO (analog input)

49,152 samples

Non-volatile memory

2,048 bytes (768 bytes for calibration, 256 bytes for user, 1,024 bytes for network
settings)