HP EPM-442A Manual do Utilizador Página 67
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HP4402.book : chapter2.fm 29 Wed Apr 23 15:29:05 1997
Power Meter Operation
Setting Averaging
HP EPM-442A User’s Guide 2-29
Figure 2-5: Averaged Readings
These four resolution levels represent:
• 1, 0.1, 0.01, 0.001 dB respectively if the measurement suffix is
dBm or dB.
• 1, 2, 3 or 4 significant digits respectively if the measurement suffix
is W or %.
Note The following procedure details how to set the averaging for
channel A. To set the averaging on channel B use the same
procedure using the softkey.
To set averaging:
1. Press , . The current setting of
averaging is displayed under the softkey.
2. To change this setting press . A pop up window appears.
Use or to select your filter choice.
3. To confirm your choice press .
4. is automatically set to “On” when a value is
entered using .
The filter can be disabled and re-enabled simply by pressing
.
10 dB
10 dB
Minimum Sensor Power
Maximum Sensor Power
Power Sensor
Dynamic Range
10 dB
10 dB
1234
1 8 128 128
Resolution Setting
Number of Averages
1 1 16 256
11232
11116
1118
B Input Settings
System
Inputs
A Input Settings
Filter
Filter
Enter
Filter Off On
Filter
Filter Off On
- User’s Guide 1
- Legal Information 3
- Limitation of Warranty 4
- Exclusive Remedies 4
- Equipment Operation 5
- General Safety Considerations 6
- IEC 1010-1 Compliance 7
- Regulatory Information 8
- Declaration of Conformity 9
- DECLARATION OF CONFORMITY 9
- List of Related Publications 10
- HP EPM-442A Options 11
- About this Guide 12
- Table of Contents 13
- List of Figures 17
- List of Tables 19
- Getting Started 21
- Turning On the Power Meter 23
- The Front Panel at a Glance 24
- The Display Layout 27
- Selecting Your Display Layout 29
- Display Tutorial 30
- Window Symbols 32
- 1 of N Entry Window 33
- Numeric or Alphanumeric Entry 33
- The Rear Panel at a Glance 34
- HP EPM-442A User’s Guide 1-15 35
- 8. Serial Label 35
- Adjusting the Carrying Handle 36
- Rack Mounting the Power Meter 37
- Zeroing the Power Meter 41
- Calibrating the Power Meter 42
- HP EPM-442A User’s Guide 2-7 45
- Procedure 46
- Power Sensors 48
- Making the Measurement 52
- 2-16 HP EPM-442A User’s Guide 54
- HP EPM-442A User’s Guide 2-19 57
- 2-20 HP EPM-442A User’s Guide 58
- HP EPM-442A User’s Guide 2-21 59
- Making Relative Measurements 62
- Setting the Resolution 63
- Setting Offsets 64
- Setting Averaging 66
- Measuring Pulsed Signals 68
- Setting Measurement Limits 70
- Checking for Limit Failures 71
- Channel Measurements 73
- Making Ratio Measurements 75
- Setting the Range 79
- HP-IB Address 80
- Recorder Output 81
- Leveling a Source Output 82
- 2-46 HP EPM-442A User’s Guide 84
- Channel A 85
- Channel B 85
- Presetting the Power Meter 86
- Self Test 88
- HP-IB Testing 91
- Test Descriptions 92
- Operator Maintenance 94
- Check the Basics 96
- Instrument serial numbers 96
- UK12345678 97
- Sales and Service Offices 98
- Power Meter Operation 100
- Contacting Hewlett-Packard 100
- 2-64 HP EPM-442A User’s Guide 102
- Menu Reference 103
- Introduction 104
- The Front Panel Menu Maps 105
- Frequency/Cal Fac Menu 106
- Meas Setup Menu 107
- Rel/Offset Menu 108
- Save/Recall Menu 108
- System Inputs Menu 109
- System Inputs Menu Continued 110
- Zero/Cal Menu 111
- Front Panel Menu Reference 112
- Frequency 113
- More More 117
- Diagrammatical Hardkeys 129
- Error Messages 131
- 4-12 HP EPM-442A User’s Guide 142
- Specifications 143
- Power Meter Specifications 145
- Accuracy 146
- Power Reference 147
- Measurement Speed 148
- Zero Drift of Sensors 149
- Measurement Noise 149
- Settling Time 151
- Power Sensor Specifications 154
- General Characteristics 155
- Environmental Characteristics 156
- 5-16 HP EPM-442A User’s Guide 158
- 3-16, 3-20 161
- "Zero/Cal" 164
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