Agilent Technologies N7745A User manual

Agilent Technologies
Agilent N7744A
4-Channel Optical Multiport Power Meter
Agilent N7745A
8-Channel Optical Multiport Power Meter
Getting Started

Notices
© Agilent Technologies, Inc. 2008
No part of this manual may be reproduced
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electronic storage and retrieval or transla-
tion into a foreign language) without prior
agreement and written consent from Agi-
lent Technologies, Inc. as governed by
United States and international copyright
laws.
Manual Part Number
N7744-90A01
Edition
First edition, April 2008
Printed in Germany
Agilent Technologies Deutschland GmbH
Herrenberger Str. 130
71034 Böblingen, Germany
Warranty
This Agilent Technologies instrument prod-
uct is warranted against defects in material
and workmanship for a period of one year
from date of shipment. During the warranty
period, Agilent will, at its option, either
repair or replace products that prove to be
defective.
For warranty service or repair, this product
must be returned to a service facility desig-
nated by Agilent. Buyer shall prepay ship-
ping charges to Agilent and Agilent shall
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ware designated by Agilent for use with an
instrument will execute its programming
instructions when properly installed on that
instrument. Agilent does not warrant that
the operation of the instrument, software,
or firmware will be uninterrupted or error
free.
Limitation of Warranty
The foregoing warranty shall not apply to
defects resulting from improper or inade-
quate maintenance by Buyer, Buyer-sup-
plied software or interfacing, unauthorized
modification or misuse, operation outside
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product, or improper site preparation or
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Certification
Agilent Technologies Inc. certifies that this
product met its published specifications at
the time of shipment from the factory.
Agilent Technologies further certifies that
its calibration measurements are traceable
to the United States National Institute of
Standards and Technology, NIST (formerly
the United States National Bureau of Stan-
dards, NBS) to the extent allowed by the
Institutes’s calibration facility, and to the
calibration facilities of other International
Standards Organization members.
ISO 9001 Certification
Produced to ISO 9001 international quality
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Safety Notices
CAUTION
A CAUTION notice calls attention
to an operating procedure, practice,
or the like that, if not correctly per-
formed or adhered to, could result
in damage to the product or loss of
important data. Do not proceed
beyond a CAUTION notice until the
indicated conditions are fully
understood and met.
WARNING
A WARNING notice calls attention
to an operating procedure, prac-
tice, or the like that, if not cor-
rectly performed or adhered to,
could result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indi-
cated conditions are fully under-
stood and met.

Multiport Power Meter Getting Started 3
Safety Considerations
The following general safety precautions must be observed
during all phases of operation, service, and repair of this
instrument. Failure to comply with these precautions or with
specific warnings elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the
instrument. Agilent Technologies Inc. assumes no liability for
the customer’s failure to comply with these requirements.
This product has been designed and tested in accordance with
IEC Publication 61010-1, Safety Requirements for Electrical
Equipment for Measurement, Control and Laboratory, and has
been supplied in a safe condition. The instruction
documentation contains information and warnings that must be
followed by the user to ensure safe operation and to maintain
the product in a safe condition.
Safety Symbols
General
This is a Safety Class 1 instrument (provided with a protective
earth terminal) and has been manufactured and tested
according to international safety standards.
Before operation, you should review the instrument and manual
for safety markings and instructions. You must follow these to
ensure safe operation and to maintain the instrument in safe
condition.
Some Agilent N7744/5A circuits are powered whenever the
instrument is connected to the AC power source. To disconnect
from the line power, disconnect the power cord either at the
rear power inlet or at the AC line power source (receptacle).
CAUTION The caution sign denotes a hazard. It calls attention to a procedure
which, if not correctly performed or adhered to, could result in
damage to or destruction of the product. Do not proceed beyond a
caution sign until the indicated conditions are fully understood and
met.
WARNING The warning sign denotes a hazard. It calls attention to a
procedure which, if not correctly performed or adhered to, could
result in injury or loss of life. Do not proceed beyond a warning
sign until the indicated conditions are fully understood and met.

4Multiport Power Meter Getting Started
One of these must always be accessible. If the instrument is in a
cabinet, it must be disconnected from the line power by the
system’s line power switch.
Operating Environment
Line Power Requirements
Input/Output Signals
Line Power Connectors
In accordance with international safety standards, the
instrument has a three-wire power cable. When connected to an
appropriate AC power receptacle, this cable earths the
instrument cabinet. The type of power cable shipped with each
instrument depends on the country of destination. Please refer
to “Accessories“ in the User Guide for the part numbers of
available power cables.
WARNING To avoid hazardous electrical shock, do not perform electrical
tests when there are signs of shipping damage to any portion of
the outer enclosure (covers, panels, and so on).
WARNING The Agilent N7744/5A Optical Multiport Power Meter is not
designed for outdoor use. To prevent potential fire or shock hazard,
do not expose the instrument to rain or other excessive moisture.
CAUTION The Agilent N7744/5A Optical Multiport Power Meter complies with
overvoltage category II and can operate from the single-phase AC
power source that supplies between 100 V and 240 V at a frequency
in the range 50 to 60 Hz. The maximum power consumption is 60 VA
with all options installed.
CAUTION There is one input BNC connector: Trigger In (see “Input and Output
Connectors" on page 15). This is a TTL input. A maximum of 5 V can
be applied as an external voltage to this input connector.
There is one output BNC connector: Trigger Out (see “Input and
Output Connectors" on page 15). This is a TTL output. Do not apply
an external voltage to this connector.

Multiport Power Meter Getting Started 5
Instrument Markings
The instruction manual symbol. The product is marked
with this warning symbol when it is necessary for the user
to refer to the instructions in the manual.
Conformity Mark of the European Union.
Conformity Mark of the Canadian Standards Association,
including Agilent Technologies’ Registration Number.
Conformity Mark of the Australian ACA for EMC
compliance, including Agilent Technologies’ Registration
Number.
General Recycling Mark for plastic parts used in the
product.
Do not dispose in domestic household waste.
To return unwanted products, contact your local Agilent
office, or see www.agilent.com/environment/product/ for
more information.
WARNING To avoid the possibility of injury or death, you must observe the
following precautions before switching on the instrument.
• Insert the power cable plug only into a socket outlet provided
with a protective earth contact. Do not negate this protective
action by using an extension cord without a protective
conductor.
• Do not interrupt the protective earth connection intentionally.
• Do not remove protective covers. Operating personnel must not
remove instrument covers. Component replacement and
internal adjustments must be made only by qualified service
personnel.
• Instruments that appear damaged or defective should be made
inoperative and secured against unintended operation until
they can be repaired by qualified service personnel.
• Defective, damaged, or malfunctioning laser sources must be
returned to an Agilent Technologies Service Center.
Do not operate the instrument in the presence of flammable gases
or fumes. Operation of any electrical instrument in such an envi-
ronment constitutes a definite safety hazard.

6Multiport Power Meter Getting Started

Multiport Power Meter Getting Started 7
Contents
Safety Considerations 3
1 Getting Started
Initial Inspection 10
AC Line Power Supply Requirements 11
Operating and Storage Environment 13
Input and Output Connectors 15
Claims and Repackaging 27
2 Regulations Compliance
Declarations of Conformity 30
Regulations Information 31
Remove all doubt 32

8Multiport Power Meter Getting Started

9
Agilent N7744/5A Optical Multiport Power Meter
Getting Started
Agilent Technologies
1
Getting Started
This document helps you start using your Agilent N7744/5A
Optical Multiport Power Meter.
The full user and programming documentation for the Agilent
N7744/5A Optical Multiport Power Meter is on the CD supplied
with the instrument and on www.agilent.com. Refer to it for
details on using the Optical Multiport Power Meter.

10 Multiport Power Meter Getting Started
1Getting Started
Initial Inspection
Inspect the shipping container for damage. If there is damage to
the container or cushioning, keep them until you have checked
the contents of the shipment for completeness and verified the
instrument both mechanically and electrically.
The Function Tests in the User’s Guide give a procedure for
checking the operation of the instrument. If the contents are
incomplete, mechanical damage or defect is apparent, or if an
instrument does not pass the operator’s checks, notify the
nearest Agilent Technologies Sales/Service Office.
WARNING To avoid hazardous electrical shock, do not perform electrical
tests when there are signs of shipping damage to any portion of
the outer enclosure (covers, panels, and so on).

Getting Started 1
Multiport Power Meter Getting Started 11
AC Line Power Supply Requirements
Line Power Requirements
The Agilent N7744/5A Optical Multiport Power Meter complies
with overvoltage category II and can operate from the
single-phase AC power source that supplies between 100 V and
240 V at a frequency in the range 50 to 60 Hz.The maximum
power consumption is 60 VA with all options installed.
Line Power Cable
In accordance with international safety standards, the
instrument has a three-wire power cable. When connected to an
appropriate AC power receptacle, this cable earths the
instrument cabinet. For the part number of the power cable for
your country and instrument see the “Accessories“ chapter in
the User Guide.
The power switch allows you to switch between stand-by mode and
power-on mode..
Figure 1 Agilent N7744/5A Optical Multiport Power Meter Switch
When the instrument is in stand-by mode, the Pwr LED is
orange.
When the instrument is powered-on, the Pwr LED is green.
CAUTION Please note that the switch on the front panel of the Agilent
N7744/5A Optical Multiport Power Meter does not stop the flow of
power to the instrument.
If you need to turn off the power, unplug the instrument at the mains
or remove the power cable connector from the appliance coupler at
the rear of the instrument. For this reason, the power cable
connection should be easily accessible - allowing you to turn off the
power quickly. If the instrument is in a cabinet, it must be
disconnected from the line power by the system’s line power
switch.

12 Multiport Power Meter Getting Started
1Getting Started
The AC power requirements are summarized on the rear panel
of the instrument.
Figure 2 AC Power Requirement Markings - Agilent N7744/5A
WARNING To avoid the possibility of injury or death, you must observe the
following precautions before switching on the instrument.
• Insert the power cable plug only into a socket outlet provided
with a protective earth contact. Do not negate this protective
action by using an extension cord without a protective
conductor.
• Do not interrupt the protective earth connection intentionally.

Getting Started 1
Multiport Power Meter Getting Started 13
Operating and Storage Environment
The following summarizes the operating environment ranges. In
order for the Agilent N7744/5A Optical Multiport Power Meter
to meet specifications, the operating environment must be
within these limits.
Temperature
The instrument should be protected from temperature extremes
and changes in temperature that may cause condensation
within it.
The operating temperature for the Agilent N7744/5A Optical
Multiport Power Meter is from 5°C to +40°C.
The storage temperature for the Agilent N7744/5A Optical
Multiport Power Meter is from -40°C to +70°C.
Humidity
The operating humidity for the Agilent N7744/5A Optical
Multiport Power Meter is 15 to 80%, non-condensing.
Altitude
The maximum operating altitude of the Agilent N7744/5A
Optical Multiport Power Meter is 2000 m.
Pollution Protection
The Agilent N7744/5A Optical Multiport Power Meter is
designed for pollution degree 2.
Instrument Cooling
The Agilent N7744/5A Optical Multiport Power Meter has a
cooling fan mounted internally.
Mount or position your instrument upright and horizontally, as
shown in Figure 3 so that air can circulate through it freely.
WARNING The Agilent N7744/5A Optical Multiport Power Meter is not
designed for outdoor use. To prevent potential fire or shock hazard,
do not expose the instrument to rain or other excessive moisture.

14 Multiport Power Meter Getting Started
1Getting Started
Operating Position
When operating the Agilent N7744/5A Optical Multiport Power
Meter choose a location that provides at least 75 mm (3 inches)
of clearance at the rear, and at least 25 mm (1 inch) of clearance
at each side. Failure to provide adequate air clearance may
result in excessive internal temperature, reducing instrument
reliability. The instrument should not be operated when resting
on its rear or side panels.
Figure 3 Correct Operating Position of the Agilent N7744/5A
75 mm
(3 inches)
25 mm
(1 inch)
25 mm
(1 inch)

Getting Started 1
Multiport Power Meter Getting Started 15
Input and Output Connectors
Front and Rear Panels
Figure 4 The Agilent N7744A 4-Channel Optical Multiport Power Meter
front panel
Figure 5 The Agilent N7745A 8-Channel Optical Multiport Power Meter
front panel
Figure 6 The Agilent N7744/5A Optical Multiport Power Meter rear
panel

16 Multiport Power Meter Getting Started
1Getting Started
Making Optical Connections
Figure 7 Connecting Optical Fibers
To use a quad-adapter to connect optical fibers to the power
meter inputs:
1Select the quad-adapter that suits the optical connector that
your optical fiber is terminated with.
2Attach the optical connectors to the quad-adapter.
You can attach up to 4 fibers to the quad-adapter at the same
time.
3Make sure the number labels on the quad-adapter are at the
top.
4Connect the quad-adapter to the optical inputs, see Figure 7,
by pressing it on until it clicks securely into place.
Optical
Connectors
Quad
Adapter
Optical
Inp uts
NOTE Before you attach a quad-adapter or fiber, you should make sure they are
clean. This is important for accurate measurements.
The fibers do not contact the optical inputs (all contact with the optical
inputs should be avoided). Usually the only cleaning necessary for the
optical inputs is the gentle removal of dust with pressurized, dry air.
For further information see “Cleaning Instructions“ in the User’s Guide.

Getting Started 1
Multiport Power Meter Getting Started 17
Removing Optical Interfaces
1Press the release levers on both sides of the quad-adapter to
release it from the front panel of the power meter.
2You can now remove the optical connectors from the
quad-adapter.
Electrical Connectors
There are two BNC connectors on the rear panel of your
instrument. These are the Trigger Out and the Trigger In
connectors.
LAN Interface
Selecting a LAN Network
For the purposes of this guide, a private (isolated) LAN network
is defined as a network configuration in which instrument
access is a direct connection between the computer and the
instrument, or to multiple instruments connected via a
dedicated router or switch. A site (company-wide) LAN is
defined as a network in which instrument access is available to
NOTE There are release levers on both sides of the quad-adapter for removing it
from the optical inputs.
release
lever
release
lever
NOTE Always place the dust cap on unused connector interfaces.
You can use the quad-adapter dust caps to protect the four power meter
inputs and the rear of the quad-adapter, for example, when fibers are
attached.
CAUTION The Trigger In, see Figure 6, is a TTL input. A maximum of 5 V can be
applied as an external voltage to this input connector.
The Trigger Output, see Figure 6, is the only output BNC connector.
This is a TTL output. Do not apply an external voltage to this
connector.

18 Multiport Power Meter Getting Started
1Getting Started
many users at on-site and remote locations. The instrument’s
application and/or your company’s IT (Information Technology)
department may have guidelines that help decide the type of
network (private or site) used. If a network configuration has
not been determined, refer to the following considerations
concerning each type.
Private LAN Considerations
Among the basic parameters of a private LAN network to
consider are security, performance, reliability, and IP address
availability.
Security A private network generally involves a direct
connection between the computer and the instrument, or to
multiple instruments using switches or routers. Access to the
instrument is limited to users on the private network, as
opposed to users on a site network that could locate and access
the instrument from any location.
Private networks can reduce the possibility of tests being
disrupted by unplanned or unauthorized access. Code
generation for test systems on a private network is often
simplified, as provisions against unauthorized users may not be
required.
Performance Test systems where large amounts of data are
transferred usually have faster throughput on a private
network. On a site network, heavy and unpredictable LAN
traffic affects each instrument (node) on the network.
The impact on a test system is that repeatability is difficult to
achieve as latencies are difficult to account for.
Reliability Private networks are fundamentally more reliable
than site networks as they host fewer users and are less
complex than site networks.
Private networks are isolated from conditions that could bring
down (crash) a site network.
IP Address Availability Every instrument (node) on a LAN
(private or site) has an IP (Internet Protocol) address. Due to
the expanding use of the internet, the number of site network IP
addresses available is limited. By using a router with Dynamic
Host Configuration Protocol (DHCP) capability on a private
network, the router can assign an IP address to each instrument
thus creating a sub-network (subnet) that does not consume site
IP addresses.

Getting Started 1
Multiport Power Meter Getting Started 19
Site LAN Considerations
For applications requiring access by many users or by users at
distributed sites, a site LAN network is required. In addition to
supporting multiple users, site LANs often offer the advantage
of being maintained by IT departments. When using a site LAN,
consult your IT department regarding LAN configuration and
security issues.
Connecting the LAN Cable
LAN cables are connected between the LAN terminal on the
instrument and the computer, or between the instrument and a
router or switch if included in your network.
Private Network Connections Figure 8 shows typical LAN cable
connections for a private network.
Figure 8 Typical Private (isolated) LAN Network Connections.
If the Agilent N7744/5A power meter is connected directly to the
PC, use a LAN crossover cable, as provided with the instrument.
If your computer supports Auto-MDIX or contains a LAN card
with gigabit data transfer rates, the (blue) crossover cable is not
required. A standard LAN cable can be used instead.
For private LAN networks that include a switch or router, use
standard LAN cables for all network connections. Do not use a
crossover cable.
Site Network Connections Figure 9 shows a typical LAN cable
connection for a site network.
Direct
Connection
PC
CAT6 Crossover Cable LAN enabled
instrument
PC
Router/Switch
Connection
Ethernet Hub Switch/Router
Standard LAN cables
LAN enabled instruments

20 Multiport Power Meter Getting Started
1Getting Started
Figure 9 Typical Site LAN Network Connections.
On site networks, the Agilent N7744/5A and the computer are
connected directly to site LAN ports, or are connected to the
site LAN through a switch. In each site network configuration,
standard LAN cables are used.
The LAN LED As the LAN connection is made, the DHCP server
assigns an address and the LXI device identification proceeds
you will see the following indicators:,
There may be a delay between making the LAN link (yellow
status) and getting the IP address (green status).
This delay may be longer if there is no DHCP server, for example
when the Agilent N7744/5A is connected directly to a PC.
GPIB Interface
You can connect your GPIB interface into a star network, a
linear network, or a combination star and linear network. The
limitations imposed on this network are as follows:
•The total cable length cannot exceed 20 meters
•The maximum cable length between devices is 4 meters, with
an average separation of 2m between devices over the whole
bus.
•No more than 15 devices may be interconnected on one bus.
No LAN link
LAN link
No IP Address LAN link
LXI Device
identification
Red LAN Yellow LAN Green LAN Green
blink
LAN
PC
PC
Standard LAN cable LAN enabled
instrument
Ethernet Hub Switch/Router
Router/Switch
Connection
Standard LAN
cables
LAN enabled instruments
To Site LAN
To Site LAN