Understanding the Agilent E1330B Digital I/O Module
41
Chapter 4
Chapter 4
Understanding the Agilent E1330B Digital
I/O Module
Using This Chapter
This chapter provides explanations of the signal lines, handshake modes,
and port combining for the Digital I/O Module. This chapter has the
following topics.
•
Port Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 41
•
Default and Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 43
•
Setting the Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 43
•
Using the Handshake Modes. . . . . . . . . . . . . . . . . . . . . . . . . Page 44
•
Inputting Data Bytes and Bits . . . . . . . . . . . . . . . . . . . . . . . . Page 50
•
Outputting Data Bytes and Bits . . . . . . . . . . . . . . . . . . . . . . Page 51
•
Multiple Port Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 53
Port Description
Each of the Digital I/O module ports has 8 data lines and 6 control lines. Not
all these lines are required for every application. A simplified diagram of a
port is shown in Figure 1-1. The following subsections describe the use of
these lines.
Data Lines
Each port has 8 data lines, numbered from 0 to 7. The data lines can be set
as an 8-bit group, as part of a larger group, or individually using SCPI
commands.
The logical TRUE condition of the data lines can be controlled with SCPI
commands. Positive polarity is the default. The following table shows the
effect of changing the polarity with Input and Output operations for each
data line.
Input Operations
Output Operations
POSitive Polarity
TTL High = 1
1 = TTL High
TTL Low = 0
0 = TTL Low
NEGative Polarity
TTL High = 0
0 = TTL High
TTL Low = 1
1 = TTL Low
Содержание E1330B
Страница 2: ......
Страница 10: ...8 Notes ...
Страница 11: ...9 Notes ...
Страница 12: ...10 Notes ...
Страница 25: ...Configuring the Agilent E1330B Digital I O Module 23 Chapter 2 Figure 2 6 J1 and J2 Connector Pinouts ...
Страница 32: ...30 Configuring the Agilent E1330B Digital I O Chapter 2 Notes ...
Страница 42: ...40 Using the Agilent E1330B Digital I O Module Chapter 3 Notes ...
Страница 58: ...56 Understanding the Agilent E1330B Digital I O Module Chapter 4 Notes ...
Страница 104: ...102 Agilent E1330B Digital I O Module Command Reference Chapter 5 Notes ...
Страница 146: ...144 Error Messages Appendix C Notes ...