Exfo FVA-3150 Variable Attenuator Manuel d'utilisateur Page 30
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Setting Up Your Variable Attenuator
24 FVA-3150
Selecting and Using an Attenuation Display Mode
Selecting and Using an Attenuation Display
Mode
Note: The total or absolute attenuation referred to in this manual is the actual
optical insertion loss between the input and output ports, including the
connectors.
The Variable Attenuator offers the following three attenuation display
modes:
Absolute attenuation mode
Offset attenuation mode
Reference attenuation mode
Display Mode Description
Absolute The displayed attenuation value takes into account both
the absolute value and the offset value.
Default mode upon initial activation.
Reference
(relative)
The displayed attenuation value is the attenuation relative
to a defined reference value, which can be any value
within the unit’s attenuation range and may be selected as
the reference.
- FVA-3150 1
- Contents 3
- Certification Information 5
- DECLARATION OF CONFORMITY 6
- 1 Introducing the FVA-3150 7
- Front Panel 8
- Back Panel 9
- Available Models 10
- Typical Applications 10
- IMPORTANT 11
- 2 Safety Information 13
- Variable Attenuator 9 15
- 10 FVA-3150 16
- Electrical Safety Information 16
- Equipment Ratings 16
- Operation 16
- Storage 16
- 3 Getting Started With Your 17
- Variable Attenuator 17
- 12 FVA-3150 18
- Variable Attenuator 13 19
- 4 Setting Up Your Variable 21
- Attenuator 21
- Locking Control Key Access 22
- Variable Attenuator 17 23
- 18 FVA-3150 24
- Variable Attenuator 19 25
- Selecting the Attenuation 26
- 22 FVA-3150 28
- Reference attenuation mode 30
- Variable Attenuator 25 31
- 26 FVA-3150 32
- Variable Attenuator 27 33
- Current offset value for 33
- 28 FVA-3150 34
- Variable Attenuator 29 35
- Relative attenuation 35
- Absolute attenuation 35
- 30 FVA-3150 36
- Variable Attenuator 31 37
- 32 FVA-3150 38
- Variable Attenuator 33 39
- Configuration number 39
- 36 FVA-3150 42
- Variable Attenuator 39 45
- 40 FVA-3150 46
- Variable Attenuator 41 47
- 42 FVA-3150 48
- Variable Attenuator 43 49
- Operating the Shutter 50
- 6 Controlling Your Variable 51
- Attenuator Remotely 51
- 46 FVA-3150 52
- Variable Attenuator 47 53
- GPIB Setting 53
- GPIB address 53
- Communication Parameters 54
- Variable Attenuator 49 55
- Command Structure 57
- Error Messages 58
- Description Probable Cause 59
- RS-232 Connector Pinout 60
- 7 Maintenance 61
- Recalibrating the Unit 65
- Recycling and Disposal 66
- 8 Troubleshooting 67
- Transportation 68
- Liability 70
- Service and Repairs 72
- Variable Attenuator 67 73
- Technical Specifications 76
- B Remote Control Commands 77
- 72 FVA-3150 78
- IEEE 488.2 Required Commands 78
- 76 FVA-3150 82
- Command Function 83
- 78 FVA-3150 84
- Command Tree 85
- ATTenuation 87
- Example ATT –15.350 DB 88
- ATTenuation? 89
- 84 FVA-3150 90
- Variable Attenuator 85 91
- DISPlay:DIMMer 92
- DISPlay:DIMMer? 92
- Variable Attenuator 87 93
- INPut:ATTenuation 94
- Example INP:ATT -15.350 DB 95
- INPut:ATTenuation? 96
- INPut:OFFSet 97
- INPut:OFFSet:DISPlay 97
- INPut:OFFSet? 98
- INPut:STEP 98
- INPut:STEP? 99
- INPut:STEP:CATAlog? 99
- INPut:WAVElength 100
- INPut:WAVElength? 100
- OUTPut:APMode 101
- OUTPut:APMode? 101
- OUTPut[:STATe] 102
- OUTPut[:STATe]? 102
- PROGram:SELected:ATTenuation 103
- PROGram:SELected:DELAy 103
- PROGram:SELected:DURAtion 104
- PROGram:SELected:STATe 104
- PROGram:SELected:STATe? 105
- PROGram:SELected:STEP 105
- WaVeLength 106
- WaVeLength? 106
- SYSTem:ERRor? 107
- SYSTem:VERSion? 107
- Variable Attenuator 103 109
- Variable Attenuator 105 111
- ₼⦌␂ℝ☀⹂䓸德棟Ⓟ䤓屓⸩ 113
- MARKING REQUIREMENTS 114
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