EXFO OSA20 Manuel utilisateur
Getting Started
Optical Spectrum Analyzer
OSA20
Optical Spectrum Analyzer
www.EXFO.com
Contents
ii OSA20
Contents
1 Introducing the OSA20 ......................................................................................................... 1
Technical Specifications .......................................................................................................................................1
Product Overview ................................................................................................................................................4
2 Safety Information ............................................................................................................. 10
Other Safety Symbols on Your Unit ...................................................................................................................11
Laser Safety Information ....................................................................................................................................12
Electrical Safety Information ..............................................................................................................................12
3 Getting Started with Your OSA20 ...................................................................................... 14
Unpacking and Installing the OSA20 .................................................................................................................14
Connecting the OSA20 to a Power Source .........................................................................................................16
Connecting a Light Source to the OSA20 ...........................................................................................................18
Connecting a Mouse and Keyboard to the OSA20 .............................................................................................19
Turning on the OSA20 and Accessing the Home Window .................................................................................20
Turning off the OSA20 .......................................................................................................................................21
For full details on how to use the OSA20, see
CTP10 User Guide available on the USB key
provided with the instrument.
OSA20 1
1 Introducing the OSA20
The OSA20 is a diffraction-grating based optical spectrum analyzer, using a touch sensitive
display with multi-touch gesture control. It provides an extensive suite of built-in analysis
functions enabling input signal measurement and analysis for many common applications.
A wide range of communication ports allows remote control operations and export of data.
The OSA20 features one general analysis mode and seven application-oriented modes.
Each analysis mode has a full suite of analysis functions for a detailed spectrum analysis.
Technical Specifications
IMPORTANT
The following technical specifications can change without notice. The information
presented in this section is provided as a reference only. To obtain this product’s
most recent technical specifications, visit the EXFO Web site at www.exfo.com.
Optical Measurement
Wavelength Spectral range 1250–1700 nm / 239.834–176.349 THz
Span range 0.5 nm to full range (450 nm)
Linearitya±6 pm over 1500–1640 nm, ±20 pm over full range /
2.5 GHz @ 1550 nm
Accuracya. ±10 pm over 1500–1640 nm, ±25 pm over full range /
2.5 GHz @ 1550 nm
Repeatability ±2 pm / 0.25 GHz @ 1550 nm
Sampling resolution 2 pm / 0.25 GHz @ 1550 nm
Sampling points 251 (span of 0.5 nm) to 225,001 (span of 450 nm)
Reference Built-in ELED (safety class 1) + Acetylene cell (user
calibration by patch cord)
Acetylene gas is a NIST standard Reference Material
SRM 2517a. The P9 line is used in the case of OSA20
Monochromator Resolution bandwidthb, c, d 20 pm native, adjustable over 50–2000 pm with 1 pm
step
Dynamic range (ORR)e≥ 30 dB (> 35 dB typ.) beyond ±50 pm from peak
≥ 50 dB (> 55 dB typ.) beyond ±100 pm from peak
≥ 60 dB (> 63 dB typ.) beyond ±200 pm from peak
Stray light suppression ratiof≥ 73 dB
Introducing the OSA20
2OSA20
Technical Specifications
The validity of specifications depends on operating conditions (see OSA20 User Guide,
Recalibrating the OSA20 on page 146).
Optical power Input power per channel ≤ 20 dBm
Total safe power ≤ 25 dBm
Level
sensitivityg
single scan High (0.5 nm/s): < -76 dBm (-78 dBm typ.)
with averaging
(Avg Nb of scans)h
High (0.5 nm/s): -80 dBm (Avg 3), -85 dBm (Avg 30),
-90 dBm (Avg 380)
-75 dBm (2 nm/s): -80 dBm (Avg 7), -85 dBm (Avg 70),
-90 dBm (Avg 800)
Absolute level accuracya., i ±0.4 dB at 1310 nm and 1550 nm
Level linearityj±0.07 dB over the full range (input level -50 to
+3 dBm)
Level/wavelength flatnessk±0.15 dB over 1500–1640 nm,
±0.25 dB over 1260–1680 nm
Level sampling ±0.01 dB over -60 to +20 dBm
Sweep speed Sensitivityg. -55 dBm at 2000 nm/s to -75 dBm at 2 nm/s
Sweep cycle/100 nml300 ms typ.
Sampling rate 1 MHz typ.
a. After user calibration performed after 1 hour warm-up time.
b. Native 17–24 pm over 1500–1620 nm (except in -55 dBm sensitivity), 17–26 pm over 1250–1700 nm.
c. Adjustable resolution bandwidth is calculated from the native bandwidth.
d. Adjustable over 6–400 GHz with 0.1 GHz step on the abscissa in THz.
e. HeNe laser at 1523 nm with ±2 nm span.
f. Laser at 1523 nm with ±50 nm span, excluding ±2 nm around peak.
g. Noise level of 99 % of all data points over 1520–1620 nm.
h. Typical values.
i. Over 18–28°C all sensitivity settings except ±0.6 dB in -55 dBm and Burst sensitivities.
j. Measured @ 1310 nm and 1500 nm, except ±0.3 dB in -55 dBm and Burst sensitivities.
k. Except ±0.35 dB in -55 dBm and Burst sensitivities, except for water absorption lines, over 18–28°C all sensitivity settings.
l. Sweep cycle /100 nm at -60 dBm sensitivity at center wavelength of 1475 nm.
Optical Measurement
Introducing the OSA20
OSA20 3
Technical Specifications
Interfaces and Electrical
Optical interfaces Optical input SMF-28 type fiber
User calibration output Built-in ELED (safety class 1) + Acetylene cell (user
calibration by patch cord)
Connector (input and
output)
FC/APC or FC/PC or SC/APC or SC/PC
Return loss > 38 dB (> 42 dB typ.) at 1310 nm and at 1550 nm (APC
connector)
External devices Screen VGA Port (x1), DVI-D Port (x1), HDMI (x1)
Mouse, keyboard, hard
disk...
USB 2.0-A (x4), USB 3.0-A (x2)
Serial ports (unused) Male SUBD-9 (x2)
Sound ports (unused) Line-in (x1), Line-out (x1), Microphone (x1)
Remote
interfaces
Ethernet (2x RJ45) 1 GB/s max.
GPIB (1x IEEE 488) 7.2 MB/s max.
USB (1x USB 2.0-B) 115 kB/s max.
Triggers Trigger In (BNC) High level: >3 V
Low level: <2 V
Input maximum range: 0–5.5 V
Trigger Out (BNC) High level: 4.5 to 5 V on high-impedance load (>10 kΩ)
Low level: 0 to 0.5 V on high-impedance load (>10 kΩ)
Physical
specifications
Display screen 12 inch capacitive touch-screen (res. 1024 x 768)
Data Storage capacity 2 GB
Dimensions & weight W 413 x H 314 x D 385 mm, 15 kg
Available accessory Rack mount kit
Introducing the OSA20
4OSA20
Product Overview
Product Overview
The OSA20 is delivered with the following accessories:
1 front panel protective cover
1 power supply cord
1 AC/DC power adapter (fastened on the rear panel)
1 jumper (for user calibration)
1 capacitive touch screen stylus
1 manual Getting Started with OSA20
1 USB key containing the system version installed on the OSA20 and the available
drivers, examples, reports and user documentation.
Front Panel
The OSA20 is delivered with a protective cover fastened on the front panel.
On/Off button
The label identifies the On/Off button that enables you to turn on or off the OSA20 (see
Turning on the OSA20 and Accessing the Home Window on page 20).
Multi-touch Screen
The multi-touch screen enables you to perform all possible operations on the OSA20.
USB 2.0-A port
Multi-touch screen
On/Off button
Optical connectorsConnector’s plate
Introducing the OSA20
OSA20 5
Product Overview
To select a parameter, command or function on the screen, touch the corresponding
command with the tip of your finger or the stylus, without tapping it.
The following gestures are available on the multi-touch screen:
USB ports
The label identifies the two USB 2.0 type-A ports located on the front panel. They
enable you to connect USB devices such as:
Keyboard and mouse if needed (see OSA20 User Guide, Connecting a Mouse and
Keyboard to the OSA20 on page 19)
USB key or hard disk to export your measurement results
An external multi-touch screen
The USB ports are SELV classified; you must only connect them to interfaces of the same
type.
Optical Connectors
The two following optical connectors, protected by a dust cap, are located on the front
panel:
The Calibration Output label identifies the ELED and acetylene source output, used for
user calibration of the wavelength (see OSA20 User Guide, Performing a User
Calibration on page 144).
The label indicates an injury hazard. The user calibration output requires special
safety instructions for proper use: see OSA20 User Guide, Performing a User Calibration
on page 144.
The Optical Input label identifies the optical input, used to connect a light source.
The two optical connectors are mounted on a plate, which enables you to access the
internal optical connectors for cleaning (see OSA20 User Guide, Cleaning Optical
Connectors on page 143).
Gesture Description
Touch Gently touch something on the screen with your finger or the stylus to
select it.
Pan Drag your finger or the stylus across the screen.
Pinch/Stretch Pinch two fingers together or move them apart to zoom in or out:
To zoom in, touch two points on the screen and move your fingers
away from each other.
To zoom out, touch two points on the screen and move your fingers
toward each other.
Long press Hold your finger or stylus on the graph until a complete circle appears
around it to automatically activate the rectangle zoom (see OSA20 User
Guide, Adjusting the Scale of the Graph on page 60).
Introducing the OSA20
6OSA20
Product Overview
Left-side Panel: Cooling Fan
The cooling fan, located on the left-side panel of the OSA20, extracts warm air from inside.
A cover grid protects it.
Right-side Panel: Connectors
The right-side panel of the OSA20 contains:
A complete set of communication ports and interfaces for remote control and export of
data.
All ports and interfaces are SELV classified and must only be connected to interfaces of
the same type.
Ventilation holes for air input.
Cooling Fan
Introducing the OSA20
OSA20 7
Product Overview
External Screen Connectors
You can connect an external screen to the following ports:
VGA port
DVI port
HDMI port
For more details on how to configure the external screen settings, see OSA20 User Guide,
Sharing the OSA20 Display with an External Screen on page 29.
Trigger Ports
The trigger ports enable you to synchronize scans with a signal (see Interfaces and Electrical
on page 3 for more details on signal levels).
TRIG OUT: BNC connector for outputting trigger signals. For more details, see OSA20
User Guide, Generating Output Trigger Signals on page 51.
TRIG IN: input BNC connector for starting scan in synchronization with an external
trigger signal, as described in OSA20 User Guide, Triggering the Optical Spectrum
Acquisition on page 50.
In RLT mode, this port is used as a gate: in OSA20 User Guide, see paragraphs RLT –
Recirculating Loop Transmission on page 37 and Gate Acquisition (RLT mode
only) on page 45.
Ventilation Holes
Trigger IN
Ethernet Port #2
USB 2.0-B port
Serial Ports (x2)
(unused)
VGA Port
DVI Port
HDMI Port
Screen
Connectors
USB 3.0-A Ports (x2)
USB 2.0-A Ports (x2)
Audio Ports
(unused)
Ethernet Port #1
Trigger OUT
Introducing the OSA20
8OSA20
Product Overview
USB Ports
USB 2.0-A and USB 3.0-A: these ports enable you to connect USB devices such as:
Keyboard and mouse if needed (see OSA20 User Guide, Connecting a Mouse and
Keyboard to the OSA20 on page 19)
USB key or hard disk to export your measurement results
An external multi-touch screen
The USB ports are SELV classified; you must only connect them to interfaces of the
same type.
USB 2.0-B: this port enables you to perform remote control operations from a
connected computer. For more information, see OSA20 User Guide, Using the OSA20 in
Remote Control on page 137.
Ethernet Ports
The two Ethernet ports enable you to perform remote control operations.
Ethernet port #1:
This port is associated with a DHCP server. It can be used to connect directly a
computer that will be assigned automatically an IP address.
Ethernet port #2:
You can configure this port manually or automatically through a remote DHCP server.
For more information, see OSA20 User Guide, Using the OSA20 in Remote Control on
page 137.
Audio and Serial Ports
Unused ports.
IMPORTANT
The Ethernet ports can only be used for remote control of the OSA20. Any other
use is not possible.
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2
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