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Programming the Status Register System
Accessing Status Register Information
Chapter 3106
Accessing Status Register Information
1. Determine which register contains the bit that reports the condition. Refer to Figure 3-1
on page 103 or Figure 3-2 on page 104 for register location and names.
2. Send the unique SCPI query that reads that register.
3. Examine the bit to see if the condition has changed.
Determining What to Monitor
You can monitor the following conditions:
• current signal generator hardware and firmware status
• whether a particular condition (bit) has occurred
Monitoring Current Signal Generator Hardware and Firmware Status
To monitor the signal generator’s operating status, you can query the condition registers.
These registers represent the current state of the signal generator and are updated in real
time. When the condition monitored by a particular bit becomes true, the bit sets to 1. When
the condition becomes false, the bit resets to 0.
Monitoring Whether a Condition (Bit) has Changed
The transition registers determine which bit transition (condition change) should be recorded
as an event. The transitions can be positive to negative, negative to positive, or both. To
monitor a certain condition, enable the bit associated with the condition in the associated
positive and negative registers.
Once you have enabled a bit via the transition registers, the signal generator monitors it for a
change in its condition. If this change in condition occurs, the corresponding bit in the event
register will be set to 1. When a bit becomes true (set to 1) in the event register, it stays set
until the event register is read or is cleared. You can thus query the event register for a
condition even if that condition no longer exists.
The event register can be cleared only by querying its contents or sending the *CLS command,
which clears all event registers.
Monitoring When a Condition (Bit) Changes
Once you enable a bit, the signal generator monitors it for a change in its condition. The
transition registers are preset to register positive transitions (a change going from 0 to 1).
This can be changed so the selected bit is detected if it goes from true to false (negative
transition), or if either transition occurs.
- Programming Guide 1
- Contents 3
- 1 Getting Started 7
- I/O Libraries 9
- Interfaces 9
- Programming Language 10
- Using GPIB 11
- GPIB Interface Terms 14
- GPIB Function Statements 15
- Local key 16
- Preset key is pressed 16
- Using LAN 20
- Utility > 23
- Using VXI-11 24
- Getting Started 25
- Chapter 1 19 25
- Figure 1-2 Show Devices Form 25
- Using Sockets LAN 26
- Using TELNET LAN 27
- Start > Run 28
- Using FTP 31
- Using RS-232 33
- Character Format Parameters 36
- If You Have Problems 36
- 2 Programming Examples 37
- Remote Off On 38
- GPIB Programming Examples 40
- Chapter 240 46
- Chapter 242 48
- Chapter 244 50
- Chapter 246 52
- Chapter 248 54
- Chapter 250 56
- Chapter 252 58
- Chapter 254 60
- Chapter 256 62
- Chapter 258 64
- Chapter 2 59 65
- Chapter 2 61 67
- Chapter 262 68
- Chapter 2 63 69
- LAN Programming Examples 70
- VXI-11 Programing 71
- Chapter 2 67 73
- Chapter 268 74
- Chapter 2 73 79
- Chapter 274 80
- Chapter 2 75 81
- Chapter 276 82
- Chapter 2 77 83
- Chapter 278 84
- Chapter 2 79 85
- Chapter 280 86
- Chapter 2 81 87
- Chapter 282 88
- Chapter 2 83 89
- Chapter 284 90
- Chapter 2 85 91
- Chapter 286 92
- Chapter 2 87 93
- Chapter 288 94
- Chapter 290 96
- Start > Programs > 97
- Command Prompt 97
- Chapter 292 98
- Programming Examples 102
- RS-232 Programming Examples 102
- Chapter 296 102
- Queries Using Agilent BASIC 103
- Queries Using VISA and C 104
- Chapter 2 99 105
- Chapter 2100 106
- 3 Programming the 107
- Overview 108
- Chapter 3 103 109
- Chapter 3104 110
- Status Register Bit Values 111
- Determining What to Monitor 112
- Deciding How to Monitor 113
- Status Register SCPI Commands 116
- Status Byte Group 118
- Status Byte Register 119
- Chapter 3114 120
- Status Groups 121
- Standard Event Status Group 122
- Chapter 3 117 123
- Chapter 3128 134
- Chapter 3144 150
- 4 Downloading and Using Files 151
- Introduction 152
- ARB Waveform Data Downloads 153
- Bit-value and Output Power 154
- Data Requirements 156
- File Structure and Memory 156
- Downloading Waveforms 157
- Metrowerks CodeWarrior 3.0) 161
- Playing a Downloaded Waveform 166
- Mode > Dual ARB > 168
- User File Data Downloads 173
- Data Limitations 175
- Data Volatility 175
- Downloading User File Data 180
- Timeslots 184
- Select File 184
- Downloading in List Format 190
- Downloading in Block Format 192
- Viewing the PRAM Waveform 194
- Data Transfer Troubleshooting 195
- User File Download Problems 197
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