Tunable XFP Transceiver
Evaluation Kit
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Technical Note
Tunable XFP Transceiver Evaluation Kit
Introduction
The Lumentum tunable XFP evaluation kit provides designers with a convenient means of
testing and evaluating Lumentum tunable XFP hot-pluggable transceivers. The evaluation kit
consists of two boards: mother and daughter boards “sandwiched” together. The tunable XFP
transceivers always plug into the daughter (top) board. The motherboard allows users to
connect to AC power and PC/laptop via USB connection.
The Lumentum tunable XFP evaluation kit incorporates highspeed electrical SMA connectors that allow users to connect to a
patterns generator or other 10 G serial sources to test tunable
XFP transceivers. The evaluation kit has several different test
points and LEDs to indicate the status of tunable XFP transceivers.
CLK+ and CLK- inputs: These inputs can be used for tunable XFP
transceivers that require a reference clock. Please refer to
individual XFP transceiver data sheet to determine if reference
clock is required for DUT. Note: Lumentum tunable XFP
transceivers do not require a reference clock.
XFP Evaluation Board I/Os
The evaluation kit has several electrical and optical I/Os
that designers can use to perform tunable XFP transceiver
evaluation tasks.
Optical I/O: Users are encouraged to purchase the Lumentum
tunable XFP optical transceiver that is plugged into XFP daughter
board card. The tunable XFP optical transceiver has two optical
I/O inputs where the fiber is connected for evaluation and testing
purposes. XFP transceivers use LC duplex receptacles to connect
fiber to tunable XFP transceiver.
Electrical I/Os: TX+ and TX- are transmitter differential data
inputs to tunable XFP transceiver. The RX+ and RX- are
transmitter differential data output from Tunable XFP transceiver.
All electrical inputs are connected through SMA connectors on
the tunable XFP evaluation board. The phase-matched SMA
cables are highly recommended for differential pairs.
The XFP high-speed electrical lines are based on high-speed, low
voltage logic, with nominal 100 ohms differential impedance and
AC coupled in the module. These lines were developed with the
primary goal of low power and low electromagnetic interference
(EMI). To satisfy these requirements, the nominal differential signal
levels are 500 mV p-p with edge speed control to reduce EMI.
The following minimum and maximum average receive power should
be applied to the transmitter: -24 dBm (min) and -6 dBm (max).
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Tunable XFP Transceiver Evaluation Kit
Evaluation Daughter Board Test Points and LED Indication
The Lumentum evaluation board has several useful test points and
LEDs that help to set and monitor the tunable XFP features. For
location of test points, refer to Figure 1. Use the zoom in option to
identify the location of each test point.
Yellow Test Points:
SCL/SDA: Two-wire serial interface clock and data line.
MOD_NR: Output pin. When asserted high, indicates that the module
has detected a condition that renders Tx and or Rx data invalid. This
red LED indicates that the transceiver has detected a condition that
renders transmit or receive data invalid when lit.
MOD_DESEL: Input pin. When held low by the host the module,
responds to two-wire serial communication commands. When high,
the module does not respond to or acknowledge any two-wire
interface communication from the host. This amber LED indicates
that transceiver will not respond to two-wire interface commands
when lit.
Red and Black Test Points:
MOD_ABS: Indicates XFP transceiver is not present. This green LED
indicates detection of a transceiver when lit.
3.3 V: Power supply
5.0 V: Power supply
1.8 V: Power supply
-5.2 V: Optional power supply (not used for all Lumentum
XFP products)
GROUND: Evaluation board /transceiver ground
Note B: Power supply LEDs are on when the voltage is closed to its
specified value. Power supply LED is off when power supply is off
and flash otherwise.
INT: Interrupt Output pin. When low, indicates possible module
operational fault or a status critical to the host system. The LED
lights on when the interrupt signal is low.
TX_DIS: Input pin. When asserted high, the transmitter output is
turned off. This red LED indicates that the laser is disabled when lit.
RX_LOS: Output pin. Asserted high when insufficient optical power
for reliable signal reception is received. This red LED indicates
insufficient optical power present for reliable signal receptions
when lit.
PDOWN/RESET: Multifunction input pin. The module can be powered
down or reset by pulling the low-speed P-down pin high. This LED is
on when this signal is high.
Note A: Low-speed signaling is based on low voltage TTL (LVTTL)
operating at a nominal voltage of 3.3 V.
Figure 1
Evaluation Motherboard LED Indication
Evaluation motherboard has several useful debugging
LED indicators.
PWR green LED indicates the power is applied to motherboard.
The motherboard has power supply current limit and overload
protection functionality.
LINK flashing blue light indicates USB activity.
FAIL red LED indicates that there is a failure on the motherboard.
STS LED is on if the boot is successful but no daughter card
was detected.
PASS green LED indicates the evaluation board is working normally.
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Tunable XFP Transceiver Evaluation Kit
Evaluation Kit
The evaluation kit includes the following items:
1. Evaluation board consisting of two boards (motherboard and
daughterboard) “sandwiched” together.
2. A
C/DC adapter. AC Input 100 – 240V ~ 1.5A and DC Output
12V ~ 4.17A.
3. USB cable.
4. Lumentum Graphical User Interface (GUI).
Note C: The tunable XFP transceiver is not included in the kit.
Note D: The Lumentum evaluation board comes with an installed
XFP cage assembly, including the heat sink.
System Requirements
The system requirement for Lumentum evaluation kit is Windows
XP operating system installed on PC or laptop. Also, a standard USB
connection is required to connect a PC/laptop to evaluation kit.
Setting up Evaluation Kit
1. The AC/DC power adapter and USB cable should be connected
to the evaluation kit.
2. Insert Lumentum tunable XFP transceiver into the cage.
3. Bring up Lumentum GUI on PC or laptop.
4. Connect SMA cables to TX+, TX- and RX+, RX- inputs and outputs.
The phase-matched SMA cables are highly recommended for
differential pairs.
Note E: Steps 2 and 4 can be performed in any order.
Figure 2
The Alarm & Warning/Serial ID (Figure 3) tab has several subtabs
that display serial ID and alarm and warning information of the
tunable XFP transceiver. The Serial ID Info 1 subtab displays
transceiver serial ID, device technology information, the
transceiver maximum operating electrical and environment
parameters, including encoding types and reach for its supports.
In addition, it also displays transceiver manufactured part and
serial numbers, date code, and transceiver revision number.
XFP Evaluation GUI
The Lumentum tunable XFP evaluation GUI along with tunable
XFP evaluation board allows designers to run tunable XFP
transceivers and monitor the transceiver’s main optical and
electrical parameters. In addition, the XFP evaluation GUI allows
users to read and write (user writeable area) to XFP registers/
bytes, including changing the optical channel number and
wavelength settings.
The XFP evaluation GUI once enabled, automatically reads the
tunable XFP serial and part numbers and decodes the type of the
transceiver. The main status window (Figure 2) displays transceiver
part and serial numbers, case temperature, Tx bias, Tx power, Rx
power in dBm, and total tunable XFP module power consumption.
The main status window shows the XFP transceiver Vcc’s reading,
and has an option to change the power supply values to nominal,
minimum, and maximum as specified by the XFP MSA. In addition,
the main status window has several useful options: power down,
hardware pin Tx disable, module deselect, and soft Tx disables, and
other general control signals and status registers.
Note: GUI will not start without the Gryphon evaluation board
being powered up and connected to a PC or laptop via USB cable.
Once the tunable XFP is inserted in the cage, the GUI automatically
reads and displays the tunable XFP part and serial numbers and
other optical and electrical parameters.
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Figure 3
Note: The content of Alarm & Warning/Serial ID tab cannot be
changed by the user.
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Tunable XFP Transceiver Evaluation Kit
The Serial ID Info 2 subtab (Figure 4) displays tunable XFP
transceiver enhance options, such as optional Soft TX_Disable,
Soft P_Down and wavelength tunability implementations.
Figure 4
The Alarm & Warning subtab (Figure 6) displays tunable XFP
transceiver alarm and warning threshold levels for case temperature,
Tx bias current, Tx and Rx power, and Vcc 5.0 V and Vcc 3.3 V rails.
Figure 6
Note: The content of Serial ID Info 2 subtab cannot be changed by
the user.
Note: The content of the Alarm & Warning subtab cannot be
changed by the user.
The Serial ID Compatibility subtab (Figure 5) displays supported
DWDM channels and wavelengths and support for ITU-T G.959.1
P1L1-2D2.
The Interrupts tab (Figure 7) displays transceiver interrupts
status. In addition, this tab allows users to mask or unmask all
main transceiver interrupts.
Figure 5
Note: The content of Serial ID Compatibility subtab cannot be
changed by the user.
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Figure 7
Note: The content of the Interrupts tab cannot be changed by the user.
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Tunable XFP Transceiver Evaluation Kit
The Tunable tab (Figure 8) allows users to select the tunable XFP
transceiver channel number. The Lumentum XFP supports up to
102 channels with 50 GHz channel grid spacing. The tab also
displays the XFP transceiver tuning ranges: 191.10 – 196.15 GHz.
This tab has an option to disable Tx dither, a suppression function
of stimulating Brillouin scattering (SBS), where a low-frequency
(10 KHz) tone is applied to the wavelength to stop Brillouin
scattering at high channel launch powers. For system firmware
implementation on channel selection and other tunable XFP
features, refer to latest SFF-8477 specification sections 4 and 5.
Figure 9
The Gryphon tab (Figure 10) monitors the tunable XFP evaluation
board power rails values. If these values are out of specified
range, the evaluation board might affect the performance of
XFP transceiver.
Figure 8
The User Memory tab (Figure 9) enables users to obtain tunable
XFP transceiver Serial ID information of A0 pages and userspecific fields in A2 page. To display the specific page number the
user need to specify the page number in “Pages” window. To
display A0 page lower bytes (0-127), “1” should be entered in
“Pages” window. To display A1 page higher bytes (128-256), “0”
should be entered in “Pages” window. For A2 page, “2” should be
entered in “Pages” window.
The “Byte to Highlight” window allows users to highlight the
specific byte number entered. The byte dump file can be
obtained by providing the specific page number in the “Pages”
window. Users can save the byte dump file by selecting
“Write to File” bottom.
Figure 10
Note: The content of the Gryphon tab cannot be changed by the user.
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Tunable XFP Transceiver Evaluation Kit
The I2C Controls tab (Figure 11) displays several I2C interface
options. Some of these options might not be supported by the
latest GUI revision.
Package and Handing Instructions
Connector Covers
The Lumentum 10 Gbps tunable XFP optical transceiver is
supplied with an LC duplex receptacle. The connector plug
supplied protects the connector during standard manufacturing
processes and handling by preventing contamination from dust,
aqueous solutions, body oils, or airborne particles.
Note: It is recommended that the connector plug remain on
whenever the transceiver optical fiber connector is not inserted.
Recommended Cleaning and Degreasing Chemicals
Lumentum recommends the use of methyl, isopropyl, and
isobutyl alcohols for cleaning.
Do not use halogenated hydrocarbons (trichloroethane, ketones
such as acetone, chloroform, ethyl acetate, MEK, methylene
chloride, methylene dichloride, phenol, N-methylpyrolldone).
This product is not designed for aqueous wash.
Figure 11
Electrostatic Discharge (ESD)
Handling
Normal ESD precautions are required during the handling of this
module. This evaluation kit is shipped in ESD protective
packaging. It should be removed from the packaging and
otherwise handled in an ESD protected environment using
standard grounded benches, floor mats, and wrist straps.
Eye Safety
The 10 Gbps tunable XFP optical transceiver is an international
Class 1 laser product per IEC 60825-1 second edition 2007. The
XFP optical transceiver is an eye-safe device when operated
within the limits of this specification.
Operating this product in a manner inconsistent with intended
usage and specification may result in hazardous radiation exposure.
CLASS 1 LASER PRODUCT
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Caution
Tampering with this laser-based product, or operating this
product outside the limits of this specification, may be
considered an act of “manufacturing,” and will require, under law,
recertification of the modified product with the U.S. Food and
Drug Administration (21 CFR 1040).
Ordering Information
Part Number
Product Description
JXP-01BEAA2
XFP Evaluation Kit
North America
Toll Free: 844 810 LITE (5483)
Outside North America
Toll Free: 800 000 LITE (5483)
China
Toll Free: 400 120 LITE (5483)
© 2015 Lumentum Operations LLC
Product specifications and descriptions in this
document are subject to change without notice.
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