Bk-precision 4078 - Manual Manual do Utilizador Página 38
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Avaliado. / 5. Com base em avaliações de clientes
𝑟𝑎𝑡𝑒 =
1
1000 𝑝𝑡𝑠 ∙ 1000 𝐻𝑧
= 1 𝜇𝑠
EXAMPLE: Setting the Output Frequency
To set the output frequency of a 1000 point waveform in execution memory to 1000 Hz, set the rate to 1 µs:
ACTION KEYSTROKES
Step 1. Set the output rate to 1 µs (equivalent to PARAMETER
1000 Hz output frequency) F1 :RATE
1
KHz/us
3.14.4 Setting the Amplitude
The following equation represents the relative output amplitude voltage relationship between the front-panel amplitude
peak-to-peak setting and the data point values in waveform memory:
𝑜𝑢𝑡𝑝𝑢𝑡 𝑣𝑜𝑙𝑡𝑎𝑔𝑒 =
𝐴𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒 𝑝 − 𝑝 𝑠𝑒𝑡𝑡𝑖𝑛𝑔 ∙ 𝑑𝑎𝑡𝑎 𝑝𝑜𝑖𝑛𝑡 𝑣𝑎𝑙𝑢𝑒
16382
+ 𝑜𝑓𝑓𝑠𝑒𝑡
Where 16382 is the total data point value range in waveform memory.
Table 3-4: Relative Amplitude for Waveform Output (Examples)
Front Panel
Amplitude Setting
Data Point Value
Relative Output
Amplitude Voltage
5 V peak-to-peak
8191
2.5 V positive peak
5 V peak-to-peak
0
0 V (offset voltage)
10 V peak-to-peak
-8191
5 V positive peak
3.14.5 Executing an Arbitrary Waveform
To load a waveform into execution memory, specify its starting address and length in the ARB menu.
1. Select the channel to ON.
2. Press the ARB key and select the F2:ARB function.
3. Press F1:START to set the address. Valid entries range from 1 to 399,999.
Note: The starting address always has to be an odd number. If an even number is entered, it will automatically
decrement one value to an odd number. For example, if you set start address to 2000 and press ENTER, it will
display 1999.
4. Press F2:LENGTH to set the length of the waveform.
5. Use the rotary input knob or the numerical keypad to enter the waveform length. Valid entries range from 2 to
400,000.
Note: The length value must always be an even number. If you input an odd number length, a message will pop
up and say “Even wave length” and then decrement one value to an even number. For example, if you entered
1001 as the length, the message will pop up for one second and change the value automatically to 1000.
- Safety Summary 3
- Table of Contents 5
- Section 1 7
- Specifications 8
- Modulation Combinations 10
- Section 2 11
- 2.6 Power Requirements 12
- 2.7 Grounding Requirements 12
- 2.8 Signal Connections 12
- 2.9 RS-232 Connection 12
- 2.11 GPIB Address 13
- 2.10 RS-232 Configuration 13
- Section 3 15
- 3.2 Display Window 16
- 3.3 Front Panel Controls 17
- 3.4 Back Panel Controls 17
- 3.5 Output connectors 18
- 3.6 MENU Keys 18
- 3.6.1 WAVEFORM Keys 20
- 3.6.2 MODE Key 22
- 3.6.3 ARBITRARY Key 23
- Start Address 25
- Markers 25
- 3.6.4 Arbitrary EDIT Menu 26
- 3.6.5 PULSE Menu 29
- 3.6.6 UTILITY Key 29
- 3.6.8 MODULATION Key 32
- 3.7 ON Key 34
- 3.8 Cursor Movement Keys 34
- 3.9 Rotary Input Knob 34
- 3.10 Power-On Settings 34
- 3.11 Memory 35
- 3.12 Displaying Errors 35
- 3.14 Examples 36
- 3.14.6 Using Voltage Offset 39
- 4.1 Overview 40
- 4.2 Device State 41
- 4.4 Device Address 41
- 4.5.1 The Input Buffer 42
- 4.5.2 The Output Queue 42
- 4.5.3 Response Messages 42
- 4.5.4 Coupled Commands 42
- 4.6 Block Data (GPIB Only) 43
- 4.8 Instrument Reset 43
- 4.9 Self Test 43
- 4.10 Command Syntax 43
- 4.11 Status Reporting 47
- 4.11.4 The Error Queue 48
- 4.11.5 Error Codes 48
- 4.12 Common Commands 51
- 4.13.1 SOURce Subsystem 55
- 4.13.1.2 Amplitude 57
- 4.13.1.3 Offset 57
- 4.13.1.5 Function 58
- 4.13.1.6 Point Rate 59
- 4.13.1.7 AM modulation 59
- 4.13.1.8 FM modulation 61
- 4.13.1.9 FSK modulation 62
- 4.13.1.10 Sweep control 64
- 4.13.1.11 PHASe adjust 66
- 4.13.1.12 PULSe setting 66
- 4.13.1.13 Duty Cycle 67
- 4.13.2 OUTPut Subsystem 68
- 4.13.2.1 Output State 68
- 4.13.3 Trigger Subsystem 68
- 4.13.3.1 Trigger Mode 69
- 4.13.3.2 Trigger Source 69
- 4.13.3.3 Burst Count 69
- 4.13.4 Arbitrary Subsystem 70
- 4.13.4.1 Point Rate 71
- 4.13.4.2 Address 71
- 4.13.4.3 Data 72
- 4.13.4.4 Line Draw 73
- 4.13.4.5 Clear 73
- 4.13.4.6 Copy 74
- 4.13.4.10 Start Address 76
- 4.13.4.11 Wavelength 76
- 4.13.4.12 Marker Address 76
- 4.13.4.13 Marker Length 77
- 4.13.4.14 Marker State 77
- 4.13.4.15 Save 77
- 4.13.5 Status Subsystem 78
- 4.13.5.1 Status Preset 78
- 4.13.5.2 Error Queue Read 78
- 4.13.5.3 Error Queue Enable 78
- 4.13.6 System Subsystem 81
- 4.13.6.3 SCPI Version 82
- 4.13.6.4 Security 82
- 4.13.6.5 Power-on Buffer 82
- 4.14.2 DCL - Device Clear 83
- 4.14.4 LLO - Local Lockout 83
- 4.15 SCPI Command Tree 84
- 4.15.4 :TRIGger Subsystem 85
- 4.15.5 :ARBitrary Subsystem 85
- 4.15.6 :STATus Subsystem 86
- 4.15.7 :SYSTem Subsystem 86
- 4.17.1 General 90
- Section 5 94
- 5.3 Performance Tests 95
- 5.3.3 Offset Accuracy 97
- 5.3.4 Sine Distortion 97
- 5.3.7 Operating Modes 98
- 5.3.10 RS232 Capability 100
- Performance Tests Results 101
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