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74 Agilent E1330B Digital I/O Module Command Reference
Chapter 5
DIGital:CONTroln:POLarity
[SOURce:]DIGital:CONTroln:POLarity <polarity> sets the CTL line voltage level
for logical true in port n to either TTL high for
POSitive polarity or TTL low for
NEGative polarity.
Parameters
Comments • Control lines are always accessed by their 8-bit port number.
• :CONTroln is the keyword used for commands relating to the control (CTL)
line at port n. The port number n must be the last character of the keyword
without spaces.
• If n is omitted, port 0 is used.
• The control line is used with the flag line to handshake data to and from
peripherals.
• Related Commands: [SOURce:]DIGital:CONTroln:POLarity?,
[SOURce:]DIGital:CONTrol
n[:VALue],
[SOURce:]DIGital:FLAG
n:POLarity,
[SOURce:]DIGital:FLAG
n:POLarity?
• *RST Condition: POLarity = POSitive.
Example DIG:CONT0:POL POS sets logical true to TTL high on port 0 control line.
DIGital:CONTroln:POLarity?
[SOURce:]DIGital:CONTroln:POLarity? returns a three character string, either
POS or NEG, indicating the logical true condition of the control (CTL) line at port n.
Parameters
Comments • :CONTroln is the keyword used for commands relating to the control (CTL)
line at port n. The port number n must be the last character of the keyword
without spaces.
• If n is omitted, port 0 is used.
Example DIG:CONT0:POL? queries the state of the logical true condition on port 0.
Parameter Name Parameter Type Range of Values Default
CONTrol
n
Numeric none, 0, 1, 2, or 3 0
<
polarity>
Discrete POSitive or NEGative None
Parameter Name Parameter Type Range of Values Default
CONTrol
n
Numeric none, 0, 1, 2, or 3 0
- *E1330-90007* 1
- Contents 3
- 2 Contents 4
- Contents 3 5
- 4 Contents 6
- Certification 7
- Safety Symbols 8
- WARNINGS 8
- Documentation History 8
- DECLARATION OF CONFORMITY 9
- Getting Started 13
- 12 Getting Started 14
- Chapter 1 14
- Table 1-1. Data Lines 14
- Instrument Definition 15
- Downloading SCPI Drivers 15
- SCPI Command 16
- Format Used in This 16
- Specifying SCPI 16
- Commands 16
- Specifying Multiple Port 17
- Operations 17
- Initial Operation 18
- Chapter 2 19
- Using This Chapter 19
- Setting the Address Switch 20
- Enabling Pull-ups 21
- Selecting the Interrupt Line 22
- Combining the Flag Lines 23
- Using with External Pull-ups 30
- Typical Connection 31
- Chapter 3 33
- Addressing the Module 33
- Operation Overview 34
- Default and Reset States 35
- Setting the Polarity 35
- Setting the Handshake Mode 36
- Inputting Data Bytes and Bits 37
- Multiple Port Operations 39
- Using Trace Memory 40
- I/O Module 43
- The CTL Line 44
- Using the Handshake Modes 46
- Chapter 4 47
- 0 or 1. Byte or 53
- Multiple Port 56
- Input/Output 56
- Command Reference 59
- SCPI Command Reference 62
- DISPlay Subsystem 63
- :MONitor[:STATe]? 65
- MEASure Subsystem 66
- Parameters 67
- Comments 69
- MEMory Subsystem 70
- :VME:STATe 73
- • *RST Condition: Set to OFF 73
- :VME:STATe? 73
- [SOURce:] Subsystem 74
- 0.000002. MAX returns 0.015 81
- DIGital:DATAn[:type]:POLarity 84
- DIGital:DATAn[:type]:TRACe 85
- DIGital:FLAGn:POLarity 88
- DIGital:FLAGn:POLarity? 88
- DIGital:TRACe:DEFine? 94
- DIGital:TRACe:DELete:ALL 94
- DIGital:TRACe:DELete[:NAME] 94
- STATus Subsystem 95
- :OPERation:CONDition? 96
- :OPERation:ENABle 96
- :OPERation:ENABle? 96
- :OPERation[:EVENt]? 96
- :QUEStionable:CONDition? 97
- :QUEStionable:ENABle 97
- :QUEStionable:ENABle? 97
- :QUEStionable[:EVENt]? 97
- SYSTem Subsystem 98
- • Related Commands: *ERR 99
- • *RST Condition: None 99
- :VERSion? 99
- IEEE 488.2 Common Commands 100
- Command Quick Reference 101
- Chapter 5 104
- Appendix A 105
- Information 107
- A16 Address Space 108
- Outside the Command 108
- Module or Mainframe 109
- Inside the Command 109
- Reset and Registers 111
- Register Definitions 111
- Appendix B 112
- Register Descriptions 113
- Port Interrupt 114
- Control Register 114
- Port Transfer 115
- Port Control/ 116
- Status Register 116
- Port Handshake 118
- Register 118
- Table B-4. Handshake Type 119
- Table B-5. Range Multipliers 119
- Port Normalization 120
- Programming Examples 123
- Resetting the 124
- Reading the 125
- ID, Device 125
- Type, and 125
- Registers 125
- C Version 126
- Writing an 127
- 8-Bit Byte 127
- Writing a 129
- 16-Bit Word 129
- Reading an 130
- PIR Interrupts 133
- Agilent E1330 133
- B Non-data 138
- Line I/O 138
- Embedded 142
- Computer 142
- Error Messages 145
- 144 Error Messages 146
- Appendix C 146
- Agilent E1330B User’s Manual 147
- 146 Index 148
- C (continued) 149
- 148 Index 150
- I (continued) 151
- M (continued) 152
- P (continued) 153
- R (continued) 154
- S (continued) 155
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