Keysight Technologies 11857B Manuel
Keysight 11857B
75ΩType-N Test Port Return
Cable Set
User’s and Service
Guide
User’s and Service Guide 11857-90016 1
2 User’s and Service Guide 11857-90016
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, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED WITH REGARD
TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEYSIGHT
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 KEYSIGHT 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.
DFARS/Restricted Rights Notice
If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is
delivered and licensed as “Commercial computer software” as defined in DFAR 252.227-7014 (June 1995), or as
a “commercial item” as defined in FAR 2.101(a) or as “Restricted computer software” as defined in FAR
52.227-19 (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of
Software is subject to Keysight Technologies’ standard commercial license terms, and non-DOD Departments
and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR
52.227-19(c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in
FAR 52.227-14 (June 1987) or DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data.
Safety Note
The following safety note is used throughout this document. Familiarize yourself with this note and its meaning
before performing any of the procedures in this document.
CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not correctly performed or
adhered to, could result in damage to or destruction of the instrument. Do not proceed beyond a
caution note until the indicated conditions are fully understood and met.
User’s and Service Guide 11857-90016 3
Printing Copies of This Document
To print copies of this document, download the PDF file from the Keysight Web site:
•Gotohttp://www.keysight.com.
• Enter the document’s part number (located on the title page) in the search box.
•ClickSearch.
• Print the document.
Contacting Keysight
Assistance with test and measurements needs and information on finding a local Keysight office are available
on the Web at:
http://www.keysight.com/find/assist
If you do not have access to the Internet, please contact your Keysight field engineer.
NOTE In any correspondence or telephone conversation, refer to the Keysight product by its model
number and full serial number. With this information, the Keysight representative can
determine whether your product is still within its warranty period.
General Information
To obtain optimum performance from this cable set, observe these simple precautions:
• Flex and straighten the cables as little and seldom as possible.
• Make connections carefully to avoid misalignment and connector damage or inaccurate measurements.
• Keep the connectors free of dirt and metallic particles.
• If you must clean the connectors, try clean compressed air first. Do not use abrasives. With a plastic swab,
apply only liquid Freon (trichlorotrifluoroethane) as a solvent.
• Type-N (f) center conductor protrusion: 0.207 inch maximum.
• Type-N (m) center conductor shoulder or dielectric recession: 0.208 inch minimum.
4 User’s and Service Guide 11857-90016
Description
The 11857B RF cable set consists of two type-N 75Ωcables, specified from 300 kHz to 2 GHz. This set provides
shielded RF connections to extend the test ports of S-parameter test sets such as the 85046B. The cables can
be ordered as either phase-matched or unmatched.
Model Description Number
of Cables
in Set
Replacement Cable
Part Number
11857B Standard Phase matched type-N 75Ωcables
male-male connectors
male-female connectors
1
1
Cables available as a
matched pair only
11857B Option
B24
Unmatched type-N 75Ωcables
male-male connectors
male-female connectors
1
1
11857-60005
11857-60007
User’s and Service Guide 11857-90016 5
Figure 1. Model 1857B Cables, Option B24
6 User’s and Service Guide 11857-90016
Operating Characteristics
CAUTION Mating a 75Ω (f) connector with a 50Ω(m) connector will destroy the 75Ω(f) connector.
CAUTION When mating a 75Ω (f)/(m) connector with an adaptor, do not rotate the adaptor body. Rotate
only the hexagon nut of the adaptor to tighten or loosen the connection. Damage to the center
conductor can occur if the adaptor body is rotated. Recommended adaptors are Keysight part
numbers 00909-60019 (m) and 00909-60020 (f).
Physical Characteristics
11857B
Standard
11857B
Option B24
Impedance 75Ω(nominal) 75Ω(nominal)
Connectors Type-N, male-male
Type-N, male-female
Type-N, male-male
Type-N, male-female
Phase Match ≤ 4°
(at 2 GHz)
n/a
Return Loss ≥ 24 dB
(300 kHz to 2 GHz)
≥ 24 dB
(300 kHz to 2 GHz)
11857B
Standard
11857B
Option B24
Length 61 cm
(24 inches)
61 cm
(24 inches)
Weight (both cables):
Net 0.91 kg (2 lbs) 0.91 kg (2 lbs)
Shipping 1.36 kg (2 lbs) 1.36 kg (2 lbs)
This information is subject to change without notice.
©Keysight Technologies 2010 - 2015
January 2015
*11857-90016*
11857-90016
www.keysight.com
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