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304 Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide
Creating and Downloading User-Data Files
User File Data (Bit/Binary) Downloads (E4438C and E8267D)
Using the Signal Generator’s Internal Web Server
1. Enter the signal generator’s hostname or IP address in the URL.
http://<host name> or <IP address>
2. Click the Signal Generator FTP Access button located on the left side of the window.
The signal generator files appear in the web browser’s window.
3. Drag and drop files between the PC and the browser’s window
For more information on the web server feature, see the Programming Guide.
Using the Command Window (PC or UNIX)
1. From the PC command prompt or UNIX command line, change to the proper directory:
• When downloading from the signal generator, the directory in which to place the file.
• When downloading to the signal generator, the directory that contains the file.
2. From the PC command prompt or UNIX command line, type ftp <instrument name>.
Where instrument name is the signal generator’s hostname or IP address.
3. At the User: prompt, press Enter (no entry is required).
4. At the Password: prompt, press Enter (no entry is required).
5. At the ftp prompt, type the desired command:
• <file_name1> is the name of the file as it appears in the signal generator’s directory.
• <file_name> is the name of the file as it appears in the PC/UNIX current directory.
• <directory> is the signal generator’s BIT or BIN directory.
6. At the ftp prompt, type: bye
7. At the command prompt, type: exit
Understanding Framed Transmission For Real-Time TDMA
Specifying a user file as the data source for a framed transmission provides you with an easy method
to multiplex real data into internally generated TDMA framing. The user file fills the data fields of
the active timeslot in the first frame, and continue to fill the same timeslot of successive frames as
long as there is more data in the file with enough bits to fill the data field. This functionality enables
a communications system designer to download and modulate proprietary data sequences, specific PN
sequences, or simulate multiframe transmission such as those specified by some mobile
communications protocols. As the example in the following figure shows, a GSM multiframe
transmission requires 26 frames for speech.
To Get a File From the Signal Generator
get /user/<directory>/<file_name1> <file_name>
To Place a File in the Signal Generator
put <file_name> /user/<directory>/<file_name1>
- 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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