Keysight L-Series
Coaxial Multiport Switches
Operating and
Service Manual
Notices
CAUTION
WARNING
Copyright Notice
© Keysight Technologies 2007 - 2019
No part of this manual may be repro-
duced in any form or by any means
(including electronic storage and
retrieval or translation into a foreign
language) without prior agreement and
written consent from Keysight Technologies as governed by United States and
international copyright laws.
Manual Part Number
L7104-90001
Edition
Edition 3, March 27, 2019
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware and/or software
described in this document are furnished under a license and may be
used or copied only in accordance with
the terms of such license.
Declaration of Conformity
Declarations of Conformity for this
product and for other Keysight products may be downloaded from the
Web. Go to http://www.keysight.com/
go/conformity. You can then search by
product number to find the latest Declaration of Conformity.
U.S. Government Rights
The Software is “commercial computer
software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212 and 27.405-3 and
Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S.
government acquires commercial computer software under the same terms
by which the software is customarily
provided to the public. Accordingly,
Keysight provides the Software to U.S.
government customers under its standard commercial license, which is
embodied in its End User License
Agreement (EULA), a copy of which can
be found at http://www.keysight.com/
find/sweula. The license set forth in the
EULA represents the exclusive authority
by which the U.S. government may use,
modify, distribute, or disclose the Software. The EULA and the license set
forth therein, does not require or permit, among other things, that Keysight:
(1) Furnish technical information
related to commercial computer software or commercial computer software
documentation that is not customarily
provided to the public; or (2) Relinquish
to, or otherwise provide, the government rights in excess of these rights
customarily provided to the public to
use, modify, reproduce, release, perform, display, or disclose commercial
computer software or commercial computer software documentation. No
additional government requirements
beyond those set forth in the EULA
shall apply, except to the extent that
those terms, rights, or licenses are
explicitly required from all providers of
commercial computer software pursuant to the FAR and the DFARS and are
set forth specifically in writing elsewhere in the EULA. Keysight shall be
under no obligation to update, revise or
otherwise modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant to FAR
12.211 and 27.404.2 and DFARS
227.7102, the U.S. government
acquires no greater than Limited Rights
as defined in FAR 27.401 or DFAR
227.7103-5 (c), as applicable in any
technical data.
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 OF 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 SHALL CONTROL.
Safety Information
A CAUTION notice denotes a hazard. It
calls attention to an operating procedure, practice, or the like that, 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.
A WARNING notice denotes a hazard. It
calls attention to an operating procedure, practice, or the like that, if not
correctly performed or adhered to,
could result in personal injury or death.
Do not proceed beyond a WARNING
notice until the indicated conditions are
fully understood and met.
2 Keysight L-Series Operating and Service Manual
Waste Electrical and Electronic Equipment (WEEE) Directive
This instrument complies with the WEEE Directive marking requirement. This
affixed product label indicates that you must not discard this electrical or
electronic product in domestic household waste.
Product category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is as shown below.
Do not dispose in domestic household waste.
To return this unwanted instrument, contact your nearest Keysight Service Center,
or visit http://about.keysight.com/en/companyinfo/environment/takeback.shtml
for more information.
Sales and Technical Support
To contact Keysight for sales and technical support, refer to the support links on
the following Keysight websites:
– www.keysight.com/find/switches
(product-specific information and support, software and
documentation updates)
– www.keysight.com/find/assist
(worldwide contact information for repair and service)
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4 Keysight L-Series Operating and Service Manual
Table of Contents
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Waste Electrical and Electronic Equipment (WEEE) Directive . . . . . . . .4
Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
1Introduction
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Instrument options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Frequency range and attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Attenuation accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Maximum SWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Maximum residual attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Attenuation repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
RF power handling capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Solenoid drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Solenoid cable connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Operating life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Switching speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
2 Environmental Specifications & Physical Dimensions
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
3Operating Guides
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Initial inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Mating connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Keysight L-Series Operating and Service Manual 5
Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Operator's check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Performance tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Service instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6 Keysight L-Series Operating and Service Manual
List of Figures
Figure 1 L-series coaxial multiport switches - L7106C and
Figure 2 Drive connection diagram for Option 161 and Option
Figure 3 Pin function diagram for indicator . . . . . . . . . . . . . . . . . 6
Figure 4 TTL control voltage states (Option T24) . . . . . . . . . . .10
Figure 5 Maximum incident power (cold switching) vs. frequency
Figure 6 Power derating factor vs VSWR . . . . . . . . . . . . . . . . . .12
Figure 7 Dimensions of L-series coaxial multiport switches . . .15
Figure 8 Connection to perform quick check . . . . . . . . . . . . . . .17
L7104C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
11
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List of Tables
Table 1 List of L-series coaxial multiport switches . . . . . . . . . . .2
Table 2 General specifications for L-series coaxial multiport
switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3 Indicator specifications for L-series coaxial multiport
switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4 RF specifications for L710xA and L720xA coaxial multiport
switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5 RF specifications for L710xB and L720xB coaxial multiport
switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6 RF specifications for L710xC and L720xC coaxial multiport
switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 7 Switch drive specifications for L-series coaxial multiport
switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 8 TTL drive specifications for L-series coaxial multiport
switches (Option T24) . . . . . . . . . . . . . . . . . . . . . . .10
Table 9 L-series coaxial multiport switches environmental
specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Table 10 L-series coaxial multiport switches physical
specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
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10 Keysight L-Series Operating and Service Manual
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