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Getting Started with Optical Heads What is an Optical Head?

14 Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition

Figure 3 shows two types of adapter that are available for connecting the

input fiber to an optical head

Figure 3 Connector adapters

Threaded connector adaptor:

81000xA, 81000BT

D-type magnetic connector adaptor:

(preferred)

81003xx

81001xx

81000BC

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 111 112

User’s Guide 1
Ta b l e o f Co nte n ts 5
Performance Tests 37 6
Cleaning Information 81 6
Index 109 7
Optical Heads 9
Safety Considerations 10
Input Power Limitations 11
Initial Inspection 11
Line Power Requirements 11
Operating Environment 12
Storage and Shipment 12
What is an Optical Head? 13
Analog Output 15
Optical input 15
Optical Head 16
Mounting Instructions 17
Accessories 19
Modules and Options 20
Table 1 Connector Adapters 22
Specifications 23
Definition of Terms 24
Averaging Time 25
Linewidth 25
Reference conditions 25
Power range 26
Wavelength range 26
Optical Head Specifications 29
0°C to 40°C 0°C to +35°C 32
Non-condensing Non-condensing 32
40 min 40 min 32
Safety Note: 34
Supplementary Performance 35
Characteristics 35
Performance Tests 37
Equipment Required 38
Test Record 40
Test Failure 41
Instrument Specification 42
Functional Tests 43
For 81628B only 45
Accuracy Test 46
Linearity Test 48
Test Setup 49
Change Setup 53
Calculation 54
Example: Measurement Results 54
Calculations 55
Noise Test 57
Return Loss Test 58
(Optional Test) 60
Figure 15 Interference Ripple 64
Your Entries 78
Cleaning Information 81
81000xA Optical Head Adapters 82
8162xx Optical Power Heads 82
Safety Precautions 83
Why is it important to clean 84
What do I need for proper 85
Isopropyl alcohol 86
Cotton swabs 86
Soft tissues 87
Pipe cleaner 87
Compressed air 88
Additional Cleaning Equipment 89
Warm water and liquid soap 90
Premoistened cleaning wipes 90
Polymer film 90
Infrared Sensor Card 90
Preserving Connectors 91
Cleaning Instrument Housings 92
Which Cleaning Procedure 93
How to clean connectors 94
An Alternative Procedure 95
How to clean lenses 99
Preferred Procedure 103
Procedure for Stubborn Dirt 103
Alternative Procedure 103
How to clean bare fiber ends 105
Alternative Procedure A 107
Alternative Procedure B 107
Other Cleaning Hints 108
Agilent Technologies 112

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