Keysight N774 C Series - N7747 C Power Meter; N7748 C Power Meter

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30 Keysight N774-C & 8162-C Series User’s Guide

2 Getting Started

N7747C Power Meter

Figure 9 Front panel of the N7747C 2-port optical power meter

N7748C Power Meter

Figure 10 Front panel of the N7748C 4-port optical power meter

Main Page

Safety Summary3
Instrument Markings5
South Korean Class a EMC Declaration6
Compliance and Environmental Information6
Declaration of Conformity6
Table of Contents7
General Operating Considerations14
General Information14
Operating Environment15
Handling the Instrument17
Storage, Carrying and Shipment17
Rack Mount the Instrument17
Obtaining Source Code19
Getting Started21
N774-C and 8162-C Series Instruments22
N7742C and N7743C Optical Power Meter22
N7744C and N7745C Optical Power Meter23
N7747C and N7748C Optical High Performance Power Meter24
N7749C Optical Head Interface24
81620C, 81623C, 81624C, 81626C & 81628C Optical Power Head25
N774-C Series Instrument's Front and Rear Panels27
N7742C Power Meter27
N7743C Power Meter28
N7744C Power Meter29
N7745C Power Meter29
N7747C Power Meter30
N7748C Power Meter30
N7749C Optical Head Interface31
N774-C Series Instrument's Rear Panel32
Initial Inspection33
Claims and Repackaging33
Return Shipments to Keysight Technologies33
Power Supply Requirements35
Line Power Requirements35
Optical Connections37
Optical Head Adapters37
Quad-Adapter Connections42
8100Xxi Optical Module Connector Interfaces44
Exchangeable Connector Interface N7742Xl44
Electrical Connectors45
Rear Panel Trigger BNC Connectors45
Front Panel Analog Output BNC Connector45
Optical Head Analog Output46
Powering up the Instrument47
Remote Interface48
LAN Connection with a DHCP Server (Site LAN)48
LAN Connection Without a DHCP Server (Private LAN)49
USB Connection50
Technical Overview51
The LAN Status Indicators51
The LAN Reset Button52
Deleting User Data53
Connecting the Instrument54
Connecting over USB54
Connecting over LAN55
N774-C User Interface58
Definition of Terms59
Definition of Terms61
Specification61
Typical Value (Characteristics)61
Operating Conditions61
Specified Temperature61
Ambient Temperature Range61
(Applicable) Fiber Type61
Averaging Time62
Constant Operating Conditions62
Data Logging Capability62
Drift (Dark)62
Dynamic Range (Logging Mode)63
Frequency Response63
Linearity63
Maximum Safe (Input) Power64
Minimum Averaging Time64
Noise Pp (Dark)64
Noise 2 Sigma (Dark)64
Operating Humidity65
Operating Temperature65
Operating Temperature and Humidity65
Polarization Dependent Responsivity (PDR)65
Port Separation (Static)66
Port Separation, Dynamic66
Power Range66
Range Settling Time (One Range Step)67
Relative Port to Port Uncertainty67
Return Loss67
Specification Wavelength Range68
Spectral Ripple (Power Meter; Due to Interference)68
Storage Conditions68
Total Uncertainty68
Uncertainty at Reference Conditions69
Wavelength Range69
Warm-Up Time69
User Interface Reference71
N774-C Series User Interface72
Controlling N774-C Instruments74
Control Instrument Tab74
How to Measure Power78
How to Set the Wavelength79
How to Set the Calibration Offset79
How to Set the Reference Level80
How to Remove Electrical Offsets (Zero)82
How to Choose the Range Mode83
How to Set the Range84
How to Set the Averaging Time85
How to Set Automatic Gain for Averaging Modulated Signals85
How to Choose the Minmax Function85
How to Use External Triggers85
How to Use Auxiliary Functions88
How to Get Current Instrument Settings88
How to Identity a Module89
How to Capture an Image of the Graph89
How to Save/Recall the User Interface Settings89
Logging In/Out of the N774-C User Interface90
How to Create/Change the Password91
What if You Forget Your Password91
Update Rate and Data Points91
Reboot Device92
How to Configure LAN93
Cleaning Instructions102
Safety Precautions102
Why Is It Important to Clean Optical Devices102
What Materials Do I Need for Proper Cleaning103
General Cleaning Procedure105
Additional Cleaning Information106
Firmware Upgrades107
Requirements107
Contact Keysight Technologies108

Keysight N774 C Series - N7747 C Power Meter; N7748 C Power Meter

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