Agilent Technologies N5181A/82A User Manual Page 229
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Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 219
Creating and Downloading Waveform Files
Downloading Waveform Data
For advanced programming languages, this section closely examines the code algorithm for
downloading I/Q waveform data by breaking the programming examples into functional parts and
explaining the code in generic terms. This is done to help you understand the code algorithm in
downloading the interleaved I/Q data, so you can leverage the concept into your programming
environment. While not discussed in this section, you may also save the data to a binary file and use
one of the download utilities to download the waveform data (see “Using the Download Utilities” on
page 227).
If you do not need the level of detail this section provides, you can find complete programming
examples in “Programming Examples” on page 231. Prior to downloading the I/Q data, ensure that it
conforms to the data requirements shown on page 185. To learn about I/Q data for the signal
generator, see “Understanding Waveform Data” on page 185. For creating waveform data, see
“Creating Waveform Data” on page 212.
NOTE To avoid overwriting the current waveform in volatile memory, before downloading files into
volatile memory (WFM1), change the file name or turn off the ARB. For more information, on
manually turning off the ARB, refer to the User’s Guide.
To turn off the ARB remotely, send: :SOURce:RADio:ARB:STATe OFF.
Using Simulation Software
This procedure uses a complex data array created in MATLAB and uses the Agilent Waveform
Download Assistant to download the data. To obtain the Agilent Waveform Download Assistant, see
“Using the Download Utilities” on page 227.
There are two steps in the process of downloading an I/Q waveform:
1. Open a connection session.
2. Download the I/Q data.
1. Open a connection session with the signal generator.
The following code establishes a LAN connection with the signal generator, sends the IEEE SCPI
command *idn?, and if the connection fails, displays an error message.
Line Code—Open a Connection Session
1
2
3
4
5
io = agt_newconnection('tcpip','IP address');
%io = agt_newconnection('gpib',<primary address>,<secondary address>);
[status,status_description,query_result] = agt_query(io,'*idn?');
if status == -1
display ‘fail to connect to the signal generator’;
end;
- Programming Guide 1
- Contents 3
- Documentation Overview 9
- Interfaces 13
- Agilent IO Libraries Suite 15
- Programming Languages 19
- Using the Web Browser 20
- Agilent MXG Web Server On 21
- ESG/PSG/E8663B Web Server On 21
- Preferences 26
- Getting Help (Agilent MXG) 28
- Getting Help (ESG/PSG/E8663B) 28
- Error Messages 29
- Error Message Types 30
- 2 Using IO Interfaces 31
- Using GPIB 32
- Set Up the GPIB Interface 34
- Verify GPIB Functionality 35
- GPIB Interface Terms 35
- Using IO Interfaces 36
- Using LAN 38
- Setting Up the LAN Interface 39
- Setting up Private LAN 44
- Verifying LAN Functionality 44
- Table 2-1 Ping Responses 45
- Using VXI-11 47
- Using Sockets LAN 49
- Using Telnet LAN 49
- Figure 2-7 Telnet 2000 Window 52
- Using FTP 53
- Figure 2-8 FTP Screen 54
- Character Format Parameters 59
- If You Have Problems 59
- Using USB (Agilent MXG) 63
- Setting Up the USB Interface 65
- 3 Programming Examples 67
- Running C++ Programs 69
- Running C# Examples 70
- Running Basic Examples 70
- Running Java Examples 71
- Running MATLAB Examples 71
- Running Perl Examples 71
- Clear Function 75
- Output Function 75
- • resets instrument 79
- • resets the signal generator 84
- • reads the various settings 84
- • verifies RF state off 88
- Programming Examples 100
- Figure 3-1 108
- VXI-11 Programming 111
- Sockets LAN Programming and C 115
- Queries for Lan Using Sockets 117
- Before Using the Examples 141
- Overview 148
- Status Register Bit Values 158
- Determining What to Monitor 159
- Deciding How to Monitor 159
- Status Register SCPI Commands 161
- Status Byte Group 164
- Status Byte Register 165
- Status Groups 166
- Standard Event Status Group 167
- STATus:OPERation:CONDition? 170
- Register) to 1 180
- Condition Register) to 1 186
- Condition register) to 1 189
- Understanding Waveform Data 195
- LSB and MSB (Bit Order) 196
- 1 0 1 1 0 1 1 1 197
- 1 1 1 0 1 0 0 1 197
- Byte Swapping 198
- DAC Input Values 198
- 2’s Complement Data Format 201
- I and Q Interleaving 201
- Waveform Structure 203
- I/Q File 204
- Waveform Phase Continuity 205
- Waveform Memory 208
- Memory Allocation 210
- Memory Size 212
- Waveform Data Encryption 214
- File Transfer Methods 215
- SCPI Command Line Structure 215
- FTP Procedures 220
- Creating Waveform Data 222
- Code Algorithm 223
- Downloading Waveform Data 228
- Using Simulation Software 229
- Playing the Waveform 235
- Verifying the Waveform 236
- Using the Download Utilities 237
- E443xB Data Format 238
- Marker 3 and 4 bits 240
- C++ Programming Examples 242
- MATLAB Programming Examples 265
- HP Basic Programming Examples 277
- Mode Setup 287
- Signal Generator Memory 291
- Checking Available Memory 295
- Bit File Type Data 298
- Start block data 299
- Binary File Type Data 301
- User File Size 302
- Downloading User Files 306
- Modifying User File Data 312
- 2499 only) 316
- Understanding PRAM Files 320
- Viewing the PRAM Waveform 322
- PRAM File Size 323
- Extracting a PRAM File 329
- Modifying PRAM Files 331
- Data Requirements 332
- Data Limitations 332
- Save and Recall SCPI Commands 335
- User File Download Problems 350
- PRAM Download Problems 351
- Numerics 355
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