Agilent Technologies N6705 Guia do Utilizador Página 103
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Operation and Connections Tutorial 5
Model N6705A User’s Guide 103
Parallel Connections
CAUTION
Only connect outputs that have identical voltage and current ratings in parallel.
Connecting outputs in parallel provides a greater current capability
than can be obtained from a single output.
The following figures show how to connect two outputs in parallel.
The figure on the left illustrates local sensing. If voltage drop in the
load leads is a concern, the figure on the right shows how to connect
the sense leads directly at the load (4-wire sensing).
1. Twist leads
2. 4-wire
disabled
(indicator
is off)
3. 4-wire
enabled
(indicator
is on)
Grouping the Outputs
Once outputs have been connected in parallel, they can be configured
or “grouped” to act as a single, higher-power output. This applies
when programming via the front panel or using SCPI commands.
How to group outputs that have been connected in parallel is
discussed in Chapter 3 under “Using the Power Supply - Output
Grouping”.
Effect on Specifications
Specifications for outputs operating in parallel can be obtained from
the specifications for single outputs. Most specifications are
expressed as a constant or as a percentage (or ppm) plus a constant.
For parallel operation, the percentage portion remains unchanged
while constant portions or any constants are changed as indicated
below. For current readback accuracy and temperature coefficient of
current readback, use the minus current specifications:
Current All parallel specifications referring to current are twice the single output
specification except for programming resolution, which is the same for both
single output and parallel output operation.
A B
+ +
1
23
- A 1
- Legal Notices 2
- Safety Notices 3
- DECLARATION OF CONFORMITY 4
- In this Book 5
- Contents 6
- Model N6705A User’s Guide 7 7
- Model N6705A User’s Guide 9 9
- A 11 11
- Source Features 12
- Measurement Features 13
- System Features 13
- Power Module Features 14
- The Rear Panel – At a Glance 16
- Meter View 17
- Scope View 18
- Data Logger 19
- Front Panel Menu Reference 20
- Instrument Settings 21
- Power On Settings 22
- A 23 23
- Inspecting the Unit 24
- Installing the Unit 25
- Power Module Location 26
- Bench Installation 26
- Rack Installation 26
- Cleaning 26
- Connecting the Line Cord 27
- Connecting the Outputs 27
- 4-Wire Sense Connections 28
- Connecting the Digital Port 29
- GPIB Cable 30
- USB Cable 31
- LAN Interface 32
- Connecting to a Private LAN 33
- Connecting to the Web Server 34
- Connecting Using Telnet 35
- Connecting Using Sockets 35
- Power supply function 37
- Scope measurement function 37
- Data logging function 37
- File functions 37
- Turning the Unit On 38
- Using the Power Supply 38
- Enable the Output 39
- Set Additional Properties 39
- Set the Protection Functions 40
- Output Grouping 42
- Output Ratings 43
- Power Limit 43
- Turn-on Preference 44
- Common Properties 46
- Step Properties 46
- Ramp Properties 47
- Staircase Properties 47
- Sine Properties 48
- Pulse Properties 48
- Trapezoid Properties 49
- Exponential Properties 49
- User-Defined Properties 50
- Trigger the Arb 53
- bring the trace 56
- Marker View 57
- will indicate 58
- Scope Properties 59
- Markers 60
- Data Logger View 61
- Data Logger Properties 65
- Trigger 66
- Filename 67
- Data Logger Sampling Modes 68
- Standard (interleaved) 69
- Using the File Functions 71
- Load Function 72
- Export Function 72
- Import Function 73
- Screen Capture 73
- Show Details 74
- Delete Function 74
- Rename Function 75
- Copy Function 75
- New Folder 76
- Reset/Recall/Power-On State 76
- Using the System Utilities 79
- Error Reporting 80
- Configuring the Interfaces 81
- GBIB/USB Settings 83
- Configuring User Preferences 84
- Front Panel Lockout 85
- Clock Setup 85
- Administrator Login/Logout 86
- Instrument Calibration 86
- Disk Management 88
- Updating the Firmware 88
- Installing Options 89
- Changing the Password 90
- Configuring the Digital Port 91
- Digital In 92
- Fault Out 92
- Inhibit In 92
- Trigger In 94
- Trigger Out 95
- Output Couple Controls 95
- A 97 97
- Operating Modes 98
- Current Sinking 99
- Autoranging Boundary 99
- Wire Size 100
- Multiple Loads 101
- 4-Wire Sense Considerations 101
- Open Sense Leads 102
- Output Noise Considerations 102
- Parallel Connections 103
- Series Connections 104
- Effect on Specifications 105
- Setting the Outputs 105
- Measurement Considerations 107
- Measurement System Bandwidth 108
- Averaged Measurements 109
- A 111 111
- Performance Specifications 112
- Supplemental Characteristics 113
- Autoranging Characteristic 115
- Output Impedance Graphs 115
- Appendix A Specifications 116
- Outline Diagram 125
- A 127 127
- Error List 128
- Error Messages Appendix B 129
- Appendix B Error Messages 130
- Command Errors (continued) 130
- A 133 133
- SCPI Command Summary 134
- :DELay 135
- Appendix C SCPI Commands 136
- SCPI Command Description 136
- SCPI Commands Appendix C 137
- Common Commands 139
- A 141 141
- Output Coupling 142
- Coupling Multiple Mainframes 143
- Operation 144
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