7B21

Rev. 0 | Page 5 of 8

PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS

Figure 3 7B21 Input Field Connections

Table 1. Pin Function Descriptions—

Pin

No.

Input Module Function

Output Module Function

0

SENSOR INPUT

NOT USED

1

INPUT HIGH

OUTPUT HIGH

2

INPUT LOW

OUTPUT LOW

3

POWER SUPPLY (DC)

POWER SUPPLY (DC)

4

OUTPUT VOLTAGE

INPUT VOLTAGE

5

OUTPUT & POWER

COMMON

INPUT AND POWER

COMMON

Figure 4 . Model 7B Series Module, with pin-out assignments.

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human

body and test equipment and can discharge without detection. Although this product features proprietary ESD

protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges.

Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.