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DATA:DAC VOLATILE, #214
z The following statement shows how to use the DATA:DAC command to
download five integer points in decimal format.
DATA:DAC VOLATILE, 8191, 4096, 0, -4096, -8191
IEEE-488.2 Binary Block Format
In the binary block format, a block header precedes the data points. The
block header follows the format below:
# 5 32768
“#” starts the data block. The second number represents the number of
digits to follow and the third number represents the number of bytes to
follow (32,768 bytes = 16,384 points).
A waveform data point is represented as a 16-bit integer sent in two bytes.
Therefore, the total number of bytes is always twice the number of data
points in the waveform (and must always be an even number). For example,
32,768 bytes are required to load a waveform with 16,384 points.
Use the FORM:BORD command to select the byte order for binary block
transfers. If you specify FORM:BORD NORM (the default setting), the
most-significant byte (MSB) of each data point is sent first. If you specify
FORM:BORD SWAP, the least-significant byte (LSB) of each data point is
sent first. Most computers use the “swapped” byte order.
Notes:
z The values ±8191 correspond to the peak values of the waveform (if
the offset is 0 volts).
z The maximum amplitude will be limited if the data points do not span
the full range of the output DAC (Digital-to-Analog converter). For
example, the built-in sinc wave does not use the full range of binary
values between ±8191 and thus its maximum amplitude is limited to
6.087 Vpp (into 50 Ω).
z The DATA:DAC command overwrites the previous waveform in the
volatile memory (and no error will be generated). Use the DATA:COPY
command to copy the waveform to non-volatile memory.
DATA:CATalog?
List all waveform names available for use. The names of the five built-in
waveforms (in non-volatile memory) and all user-defined waveforms (in volatile
- Model 645 1
- Arbitrary Waveform Generator 1
- Table of Contents 2
- 1 General Information 5
- 1.2 Warranty Information 6
- Limitation of warranty 7
- 1.3 Precaution of Operation 7
- 1.4 Upkeep of Model 645 8
- 1.5 Safety Information 8
- 1.6 Symbols and Terms 9
- 10
- 1.8 Options and Accessories 11
- 2 Overview 12
- 2.3.1 Front Panel 17
- 2.3.2 Rear Panel 18
- 3 Common Operations 19
- To Set Output Amplitude 23
- To Set DC Offset Voltage 25
- 4 Waveform Output Operations 33
- 4.2 Square Wave 34
- 4.3 Ramp Wave 35
- 4.4 Noise Waveform 36
- 4.5 Pulse Waveform 37
- Edge Time 38
- Pulse Duty Cycle 38
- 4.6 Arbitrary Waveform 39
- 4.7 Amplitude Modulation 41
- Modulation Depth 42
- 4.8 Frequency Modulation 44
- 4.9 Phase Modulation 47
- Phase Deviation 48
- Nimum 49
- 4.10 FSK Modulation 50
- 4.11 PWM Waveform 52
- 4.12 Frequency Sweep 54
- 4.13 Burst Operation 59
- Burst Period 61
- Burst Phase 61
- 4.14 Pattern Output 64
- Pattern Generator Cable 69
- 5 System Operations 72
- 5.3 Display Control 77
- 5.4 Beeper 78
- 5.5 Sound 78
- 5.6 Error Display 79
- 5.7 Calibration 79
- 6.1.1 USB Interface 80
- 6.1.2 GPIB Interface 80
- 6.1.3 LAN Interface 81
- Default Gateway 82
- Host Name 82
- Domain Name 82
- DNS Server 82
- The APPLy Commands 85
- IEEE 488.2 Common Commands 93
- ︱1︱2︱3︱4} 93
- 7 Error Messages 94
- 7.1 Command Errors 95
- 7.2 Execution Errors 96
- 7.3 Device Dependent Errors 107
- 7.4 Query Errors 108
- 7.5 Instrument Errors 108
- 7.6 Self-Test Errors 108
- 7.7 Calibration Errors 109
- Appendix 113
- A Specification List 114
- COMMON CHARACTERISTIC 116
- Modulation 117
- Pattern Mode CHARACTERISTIC 119
- Remote Interface Reference 120
- B.2 Output Data Formats 125
- B.3 Command Reference 125
- -- B 128
- BurstCount 130
- -- C 131
- -- D 132
- -- F 137
- -- I to O 147
- -- I 147
- -- L 148
- -- M 148
- -- O 150
- , and high/low 151
- -- P to Z 153
- -- P 153
- -- R 160
- -- S 160
- -- T 163
- -- U 164
- -- V 165
- -- W 169
- ︱1︱2︱3︱4> 170
- C. General Specifications 172
- D. Application Programs 173
- Visual Basic 180
- Visual C++ 180
- Creating the Application 181
- Using the Status Registers 183
- Object Property Setting 184
- THE SRQFetch FUNCTION 185
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