Agilent P281C Data Sheet

Agilent Technologies
X/P/K281C Adapters

Including Options 006, 012, 013

Operating and
Service Manual

Agilent Part Number: 00281-90043
Printed in USA
Print Date: April 2002

Supersedes: June 2001

Notice

The information contained in this document is subject to change without
notice.

Agilent Technologies makes no warranty of any kind with regard to this
material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Agilent Technologies
shall not be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing, performance, or
use of this material.

Agilent Technologies assumes no responsibility for the use or reliability of
its software on equipment that is not furnished by Agilent Technologies.

This document contains proprietary information which is protected by
copyright. All rights are reserved. No part of this document may be
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written consent of Agilent Technologies.

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Data and Computer Software clause at DFARS 252.227-7013 for DOD
agencies, and subparagraphs (c)(1) and (c)(2) of the Commercial Computer
Software Restricted Rights clause at FAR 52.227-19 for other agencies.

Agilent Technologies, Inc.
1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799, U.S.A.

© Copyright 1996, 1999, 2001, 2002 Agilent Technologies, Inc.

ii X/P/K218C Operating and Service Manual

Warranty

Certification Agilent Technologies 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 NBS), to the extent allowed by the Institute’s calibration facility,
and to the calibration facilities of other International Standards Organization members.

Documentation Warranty

THE MATERIAL CONTAINED IN THIS DOCUMENT IS
PROVIDED "AS IS," AND IS SUBJECT TO BEING CHANGED,
WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO
THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
AGILENT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS
OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY
INFORMATIONCONTAINEDHEREIN,INCLUDING BUTNOT
LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. AGILENT SHALL NOT BE LIABLE FOR ERRORS
OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN
CONNECTION WITH THE FURNISHING, USE, OR
PERFORMANCE OF THIS DOCUMENT OR ANY
INFORMATION CONTAINED HEREIN. SHOULD AGILENT
AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT
WITH WARRANTY TERMS COVERING THE MATERIAL IN
THIS DOCUMENT THAT CONFLICT WITH THESE TERMS,
THE WARRANTY TERMS IN THE SEPARATE AGREEMENT
WILL CONTROL.

X/P/K218C Operating and Service Manual iii

Assistance Product maintenance agreements and other customer assistance agreements

are available for Agilent Technologies products.
For assistance, call your local Agilent Technologies Sales and Service Office

(refer to “Service and Support” on page iv).

Service and Support

By internet, phone, or fax, get assistance with all your test and measurement needs.

Online assistance: www.agilent.com/find/assist
United States

(tel) 1 800 452 4844

New Zealand

(tel) 0 800 738 378
(fax) ([phone]

Latin America

(tel) [phone]
(fax) [phone]

Japan

(tel) ([phone]
(fax) ([phone]

Canada

(tel) 1 877 894 4414
(fax) [phone]

Australia

(tel) 1 800 629 485
(fax) ([phone]

Europe

(tel) ([phone]
(fax) ([phone]

Asia Call Center Numbers

Country Phone Number Fax Number

Singapore 1-800-375-8100 (65) 836-0252
Malaysia 1-800-828-848 1-800-801664
Philippines (632) 8426802

1-800-16510170 (PLDT
Subscriber Only)

Thailand [phone] (outside Bangkok)

[phone] (within Bangkok)

Hong Kong 800-930-871 (852) 2506 9233

(632) 8426809
1-800-16510288 (PLDT
Subscriber Only)

(66) 1-661-3714

Taiwan 0800-047-866 (886) 2 25456723
People’s Republic

of China
India 1-600-11-2929 000-800-650-1101

800-810-0189 (preferred)
10800-650-0021

10800-650-0121

iv X/P/K218C Operating and Service Manual

Safety and Regulatory Information

Review this product and related documentation to familiarize yourself with
safety markings and instructions before you operate the instrument. This
product has been designed and tested in accordance with international
standards.

WARNING The WARNING notice denotes a hazard. It calls attention to a procedure,

practice, or the like, that, if not correctly performed or adhered to, could result
in personal injury. Do not proceed beyond a WARNING notice until the
indicated conditions are fully understood and met.

CAUTION The CAUTION notice denotes a hazard. It calls attention to an operating

procedure, practice, or the like, which, if not correctly performed 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.

Instrument Markings

1SM1-A This text indicates that the instrument isan Industrial Scientific and Medical Group 1

When you see this symbol on your instrument, you should refer to the instrument’s

!

instruction manual for important information.

This symbol indicates hazardous voltages.

The laser radiation symbol is marked on products that have a laser output.

This symbol indicates that the instrument requires alternating current (ac) input.

The CE mark is a registered trademark of the European Community. If it is
accompanied by a year, it indicates the year the design was proven.

The C-Tick mark is a registered trademark of the Australian Spectrum Agency.

The CSA mark is a registered trademark of the Canadian Standards Association.

Class A product (CISPER 11, Clause 4).

X/P/K218C Operating and Service Manual v

This ISM devise complies with Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB du Canada

This symbol indicates that the power line switch is ON.

This symbol indicates that the power line switch is OFF or in STANDBY position.

Safety Earth Ground

This is a Safety Class I product (provided with a protective earthing
terminal). An uninterruptible safety earth ground must be provided from the
main power source to the product input wiring terminals, power cord, or
supplied power cord set. Whenever it is likely that the protection has been
impaired, the product must be made inoperative and secured against any
unintended operation.

BeforeApplying Power Verify that the product is configured to match the available main power

source as described in the input power configuration instructions in this
manual. If this product is to be powered by autotransformer, make sure the
common terminal is connected to the neutral (grounded) side of the ac power
supply.

vi X/P/K218C Operating and Service Manual

General Information

General Information

Description

The X281C, P281C, and K281C adapters provide a convenient means of
coupling between waveguide and coaxial systems. Power can be transmitted
in either direction, and each adapter covers the full frequency range of its
waveguide size. A step-like internal structure transforms the waveguide
impedance to the 50

Option 006 Option 006 adds two alignment holes to the waveguide flange. The

dimensions of the Option 006 alignment holes are provided in the following
table.

Table 1 Option 006 Alignment Hole Measurement Dimensions

Ω impedance of the coaxial line.

Model Number

X281C 3.175 mm

P281C 3.175 mm

K281C 2.381 mm

Alignment Hole
Diameter “A”

(+ 0.014 to 0.0)

(+0.014 to 0.0)

(+0.014 to 0.0)

Dimension “B” Dimension “C”

15.49 mm 16.26 mm

12.62 mm 12.14 mm

8.13 mm 8.51 mm

Figure 1 K281C Option 006 Waveguide Alignment Holes

X/P/K281C Operating and Service Manual 1

General Information

Option 012 Option 012 for the X281C offers a Type-N (m) connector to replace the

standard 7-mm connector.

Option 013 Option 013 for the X281C offers a Type-N (f) connector to replace the

standard 7-mm connector. Option 013 is not offered for the K281C and the
P281C.

Instruments Covered by Manual

The adapters covered by this manual have a two part serial number.The first
four digits and letter constitute the serial number prefix. The last five digits
form the sequential suffix that is unique to each adapter. The contents of this
manual apply to adapters prefixed at 3032A and above.

Incoming Inspection

Inspect the shipping container for damage. Inspect the adapter for any
mechanical damage incurred in transit. If the shipping container or
cushioning material is damaged, it should be kept until the contents of the
shipment have been checked for completeness, and the adapter has been
checked mechanically and electrically.

Returning for Service

If you need to return the adapters for service, complete one of the blue repair
tags located at the end of this manual and attach it to the device. If no repair
tag is available, attach a tag indicating the type of service required, your
return address, model number, and serial number of the adapter to be
repaired.

Repackaging the adapter requires original shipping containers and materials
or their equivalents. Agilent can provide packaging materials identical to the
original materials. To contact the Agilent Technologies nearest you, refer to

“Service and Support” on page iv.

Storage and Shipment Environment

Store the adapter in a clean, dry environment. The following environmental
limitations apply to both storage and shipment.

Temperature
Humidity < 95% relative at + 40
Altitude < 15,000 meters (50,000 feet)

− 55 to 75 °C
°C

2 X/P/K281C Operating and Service Manual

Specifications

Specifications shown in Table 2 are the performance standards against which
the adapter may be tested.

Table 2 Specifications

Frequency range (GHz)

1

SWR
(Typical SWR) (< 1.03) (< 1.04) (< 1.05)
Operating temperature 0 to +55 °C 0 to +55 °C 0 to +55 °C

1. Specifications in this table are measured with no gap between the full diameters of the male and
female center conductors.

Specifications

X281C P281C K281C

8.2 to 12.4 12.4 to 18 18 to 26.5
< 1.05 < 1.06 < 1.07

Figure 2 shows the variation in SWR introduced by the center conductor

gap.

Figure 2 Typical SWR Variation Versus Center Conductor Gap

X/P/K281C Operating and Service Manual 3

Specifications

Supplemental characteristics listed in Table 3 are non-warranted
performance parameters that are included as additional information for the
user.

Table 3 Supplemental Characteristics

X281C P281C K281C

Typical insertion loss 0.08 dB 0.10 dB 0.12 dB
Maximum peak power
Waveguide size:

Nominal outer diameter 25.40 x 12.70 (mm) 17.83 x 9.93 (mm) 12.70 x 6.35 (mm)

EIA WR90 WR62 WR42
Equivalent flange type UG-135/U UG-419/U UG-597/U
Dimensions: L x W x H 73 x 41 x 61 (mm) 52 x 33 x 55 (mm) 35 x 22 x 38 (mm)

1

200 W 200 W 100 W

1.00 x 0.50 (in) 0.70 x 0.39 (in) 0.50 x 0.25 (in)

2.9 x 1.6 x 2.4 (in) 2.0 x 1.3 x 2.2 (in) 1.4 x 0.9 x 1.5 (in)
Net weight 210 g (7.20 oz) 110 g (4.0 oz) 40 g (1.3 oz)
Connector type:
Standard 7-mm 7-mm APC-3.5 mm female
Option 012 N-male not available APC-3.5 mm male
Option 013 N-female not available Not available

1. The power that can be handled will be a function of the size of the center conductor. The majority of

the heat flow will be via conduction. The weak point is the coax portion. The waveguide portion is
capable of higher power. These numbers are assuming an ambient temperature of 25 degrees
centigrade and an altitude of sea level. Higher ambient temperatures and altitude would degrade
power-handling capability.

4 X/P/K281C Operating and Service Manual

Operation

Before connecting the adapter, note the precautions below.

Operation

CAUTION

Operating Environment

• Exceeding the energy and power levels shown in Table 1 may result in

damage to the adapter or associated equipment.

• Care should be taken to protect the face of the flange from any damage

that would prevent close surface-to-surface contact. Any burring,
denting, or scratching may increase RF leakage and the reflection
coefficient of the waveguide connection. The supplied plastic cover
should be used to protect the flange when the adapter is not in use.

• The power that can be handled will be a function of the size of the center

conductor. The majority of the heat flow will be via conduction. The
weak point is the coax portion. The waveguide portion is capable of
higher power. These numbers are assuming an ambient temperature of
25 degrees centigrade and an altitude of sea level. Higher ambient
temperatures and altitude would degrade power-handling capability.

Temperature 0 to 55 °C
Humidity < 95% relative at + 40
Altitude < 4,600 meters (15,000 feet)

°C

Operating Procedures When you connect an adapter to waveguide:

1. Make sure the rectangular ports are oriented the same way; that is, not
“cross-guided.”

2. Align ports carefully to minimize reflections.

3. Clamp or bolt flanges securely together so that pressure is evenly
distributed over the contacting surfaces. Loose waveguide connections
and flange distortion may result in leakage and mismatch.

Performance Test ­SWR

The maximum SWR for the adapters are shown in Table 2 and Figure 2.
When making these measurements, the test results must be less that those
listed in Table 2 plus the measurement uncertainty of the measuring system.
Measurement may be made using a standard reflectometer setup. To ensure
satisfactory performance, make sure flanges and coaxial connectors are not
damaged or worn.

Adjustments Adjustments should not be made unless the adapter does not meet

specifications, or unless the unit has been physically damaged.

X/P/K281C Operating and Service Manual 5

Service Information

Service Information

Replacing the Center Conductor Contact

Not all parts on the adapters are replaceable, but all of the adapters have a
replaceable center conductor contact.

When you replace the center conductor contact, observe the following
precautions:

• Before installing the new center conductor contact, apply

Loctite sealant #222 to the threads of the center conductor.

• Do not use excessive force when tightening center conductor parts.

Models K281C and K281C Option 012

To replace the center conductor, you will need a 5/64 inch hexagonal nut
driver.

In some units, the center conductor mounting hole was made oversized to
allow for a slight adjustment. When the center conductor is replaced in these
units, it may be necessary to readjust and retest if the unit does not meet
specifications.

If the mounting hole appears to be oversized, mount the center conductor
toward one end of the adapter as far as it will go. If the adapter fails the
performance test, move the center conductor toward the opposite end and
then retest.

6 X/P/K281C Operating and Service Manual

Replaceable Parts

Replaceable Parts

Replaceable parts for P281C adapter are shown below. Refer to Table 4,

Table 5, and Table 6 for identification of parts and corresponding part

numbers for all models. For ordering information, contact the nearest
Agilent office listed in “Service and Support” on page iv.

Figure 3 Replaceable Parts

NOTE Table 1 on page 1 gives dimensional tolerances for Option 006 that can be

expected to yield satisfactory results. It may be necessary to try various
combinations of spacers and shims to obtain proper dimensions. The use of
at least one shim is recommended because of electro-chemical differences
between the connector body and the adapter body. Refer to the appropriate
table of replaceable parts for the thickness of shims and spacers.

CAUTION Take care to avoid damaging parts. Burring, scratching, denting or

deforming parts may impair operating characteristics.

X/P/K281C Operating and Service Manual 7

Replaceable Parts

Table 4 X281C Replaceable Parts

Item No. Description Part Number

1 Connector body 1250-1466
2 Spacer 00281-20027 (0.05 mm)

or 00281-20028 (0.075 mm)
or 00281-20049 (0.025 mm)

3 Center conductor contact

G-slotted 85050-20001
Collet holder 85130-20002

4 Shim 5020-8540 (0.013 mm)

or 5020-8541 (0.025 mm)
5 Center conductor Not replaceable
6 Spacer Not replaceable
7 Washer Not replaceable
8 Nut Not replaceable
9 Blank label Not replaceable

10 Flange cap 5040-0354

X281C Option 012

1 Connector body

Male 1250-0916

Nut 1250-0918

Ring 1250-0016
2 Spacer 00281-20027 (0.05 mm)

or 00281-20028 (0.075 mm)

or 00281-20049 (0.025 mm)
3 Center conductor contact 5180-0988
4 Shim 5020-8540 (0.013 mm)

or 5020-8541 (0.025 mm)
5 Center conductor Not replaceable
6 Spacer Not replaceable
7 Washer Not replaceable
8 Nut Not replaceable
9 Blank label Not replaceable

10 Flange cap 5040-0354

8 X/P/K281C Operating and Service Manual

Table 4 X281C Replaceable Parts (Continued)

Item No. Description Part Number

X281C Option 013

1 Connector body 1250-0914
2 Spacer 00281-20027 (0.05 mm)

or 00281-20028 (0.075 mm)

or 00281-20049 (0.025 mm)
3 Center conductor contact 5180-0854
4 Shim 5020-8540 (0.013 mm)

or 5020-8541 (0.025 mm)
5 Center conductor Not replaceable
6 Spacer Not replaceable
7 Washer Not replaceable
8 Nut Not replaceable

Replaceable Parts

9 Blank label Not replaceable

10 Flange cap 5040-0354

Table 5 P281C Replaceable Parts

Item No. Description Part Number

1 Connector body 1250-1466
2 Spacer 00281-20027 (0.05 mm)

or 00281-20028 (0.075 mm)

or 00281-20049 (0.025 mm)
3 Center conductor contact

G-slotted 85050-20001

Collet holder 85130-20002
4 Shim 5020-8540 (0.013 mm)

or 5020-8541 (0.025 mm)
5 Center conductor Not replaceable
6 Spacer Not replaceable
7 Washer Not replaceable
8 Nut Not replaceable
9 Blank label Not replaceable

10 Flange cap 5040-0358

X/P/K281C Operating and Service Manual 9

Replaceable Parts

Table 6 K281C Replaceable Parts

Item No. Description Part Number

1 Connector body 1250-1507
2 Spacer 5021-9679 (0.013 mm)

or 5021-9680 (0.025 mm)

or 5021-9681 (0.051 mm)
3 Center conductor contact 00281-20043
6 Spacer 000281-20045
7 Washer 3050-0261
8 Nut 0608-0003
9 Blank label Not replaceable

10 Flange cap 5040-0357

5/64 inch hexagonal nut driver

Needed But Not Supplied

K218C Option 012

1 Connector body 1250-1509
2 Spacer 5021-9679 (0.013 mm)

or 5021-9680 (0.025 mm)

or 5021-9681 (0.051 mm)
3 Center conductor contact 00281-20044
6 Spacer 000281-20045
7 Washer 3050-0261
8 Nut 0608-0003
9 Blank label Not replaceable

10 Flange cap 5040-0357

Needed But Not Supplied

5/64 inch hexagonal nut driver

Miscellaneous Items

Loctite #222 0470-0573

Operating and Service Manual 00281-90043

10 X/P/K281C Operating and Service Manual

Connector Types

Pin depth is the distance that the center conductor mating plane differs from
being flush with the outer conductor mating plane. The pin depth of a
connector can be in one of two states, protruding or recessed.

Figure 4, Figure 5, and Figure 6 show a visual representation of proper pin

depth for connector types for standard and option models.

Table 7 Connector Types for Standard and Options

X281C P281C K281C

Standard 7-mm 7-mm APC-3.5 mm female
Option 012 N-male Not available APC-3.5 mm male
Op[tion 013 N-female Not available Not available

Connector Types

Type-N Male Connector Type-N Female Connector

Center Conductor

Mating Plane

0.207 inch (5.258 mm)

Figure 4 Type-N Connectors

minimum

Center Conductor

Mating Plane

Outer Conductor
Mating Plane

Outer Conductor
Mating Plane

0.207 inch (5.258 mm)
maximum

X/P/K281C Operating and Service Manual 11

Connector Types

3.5-mm Male Connector 3.5-mm Female Connector

See Detail "A"

See Detail "B"

Center
Conductor
Mating Plane

Center

Center

Conductor

Conductor

Mating Plane

Mating Plane

Detail "A" Detail "B"

Outer
Conductor
Mating Plane

Pin Depth

Outer

Outer

Conductor

Conductor

Mating Plane

Mating Plane

Pin Depth

Pin Depth

Figure 5 3.5-mm Connectors

Coupling
Sleeve

See Detail "A"

Inner
Conductor
Contact

Detail "A"

The pin depth is measured
"after" inner conductor contact
removal.

Figure 6 7-mm Connector

12 X/P/K281C Operating and Service Manual

Support Bead

Coupling Nut

Inner
Conductor
Mating Plane

Outer
Conductor
Mating Plane