Keysight 8710x Low PIM
Coxial Multiport Switches
Operating and
Service Manual
Notices
CAUTION
WARNING
Copyright Notice
© Keysight Technologies 2014 - 2019
No part of this manual may be reproduced 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
87104-80017
Edition
Edition 3, March 14, 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.key-
sight.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.key-
sight.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, reprod uce, 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 8710x 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)
Keysight 8710x Operating and Service Manual 3
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
4 Keysight 8710x Operating and Service Manual
Table of Contents
Waste Electrical and Electronic Equipment (WEEE) Directive . . . . . . . . . . . . . . . . . . . . 3
Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1Introduction
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2 Switch Configuration
Driving the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Standard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
TTL Drive (Option T24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electronic Position Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3 Specifications
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Supplemental specifications (cold switching) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
RF Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Indicator Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Switch Drive Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
TTL drive (option T24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 Installation and Verification
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Initial inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Operating and Service Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operator’s check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Performance test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Service instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Keysight 8710x Operating and Service Manual 5
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
6 Keysight 8710x Operating and Service Manual
List of Figures
Figure 1-1 Keysight 8710x low PIM coaxial multiport switches . . . . . . . . . . . . . . 12
Figure 2-1 Drive connection diagrams for Option 161 and Option 100 . . . . . . . . 16
Figure 2-2 Pin configuration for indicator function . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 3-1 Maximum incident power (cold switching) vs. frequency . . . . . . . . . . 22
Figure 3-2 Power derating factor vs. VSWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 3-3 TTL control voltage states (Option T24) . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 3-4 Dimensions of Keysight 8710x low PIM coaxial multiport switches . . 28
Figure 4-1 Connection to perform quick check . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Keysight 8710x Operating and Service Manual 7
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
8 Keysight 8710x Operating and Service Manual
List of Tables
Table 1-1 List of Keysight 8710x low PIM coaxial multiport switches . . . . . . . . . 12
Table 3-1 General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 3-2 RF specifications for 87104P/Q and 87106P/Q . . . . . . . . . . . . . . . . . 24
Table 3-3 RF specifications for 87104R and 87106R . . . . . . . . . . . . . . . . . . . . . 24
Table 3-4 Indicator specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 3-5 Switch drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 3-6 Switch drive specifications for TTL drive (option 24) . . . . . . . . . . . . . . 26
Table 3-7 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 3-8 Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 4-1 Replacement units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Keysight 8710x Operating and Service Manual 9
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
10 Keysight 8710x Operating and Service Manual
Keysight 8710x Low PIM Coxial Multiport Switches
Operating and Service Manual
1 Introduction
General Information 12
Key Features 13
This chapter provides you the overview of Keysight 8710x low PIM coaxial multiport switches.
11
1Introduction
General Information
Keysight 87104P/Q/R SP4T and 87106P/Q/R SP6T terminated switches provide the life and
reliability required for automated test and measurement and signal monitoring and routing
applications. These switches can be used in various applications as they are available in multiple
frequency ranges, up to 26.5 GHz.
Figure 1-1 Keysight 8710x low PIM coaxial multiport switches
Innovative design and careful process control create switches that meet the requirements for highly
repeatable switching elements in test instruments and switching interfaces. The exceptional
0.03 dB insertion loss repeatability is warranted for 3 million cycles at 25 °C. This reduces sources
of random errors in the measurement path and improves measurement uncertainty. Switch life is a
critical consideration in production test systems, satellite and antenna monitoring systems, and
test instrumentation. The longevity of these switches increases system uptime and lowers the cost
of ownership by reducing calibration cycles and switch maintenance.
Tab l e 1-1 List of Keysight 8710x low PIM coaxial multiport switches
Model number Frequency range Configuration
87104P DC to 4 GHz SP4T
87104Q DC to 20 GHz SP4T
87104R DC to 26.5 GHz SP4T
87106P DC to 4 GHz SP4T
87106Q DC to 20 GHz SP4T
87106R DC to 26.5 GHz SP4T
12 Keysight 8710x Operating and Service Manual
Key Features
Introduction 1
– SP4T and SP6T configurations
– Magnetic latching
– Guaranteed repeatability of 0.03 dB up to 3 million cycles, ensuring accurate system
measurements and reducing calibration intervals
– Excellent isolation, typically > 90 dB at 26.5 GHz
– PIM level (typical) of –165 dBc
– Opto-electronic indicators and interrupts
– Terminated ports
Keysight 8710x Operating and Service Manual 13
1Introduction
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
14 Keysight 8710x Operating and Service Manual
Switch Configuration 2
2 Switch Configuration
Driving the Switch 16
Standard Drive 17
TTL Drive (Option T24) 18
Electronic Position Indicators 19
This chapter provides you information on how to drive the switches using standard drive and TTL
drive. Also included is the configuration to utilize the function of the position indicator.
Keysight 8710x Operating and Service Manual 15
2 Switch Configuration
Driving the Switch
Each RF path can be closed by applying ground (TTL “High” for Option T24) to the corresponding
“drive” pin. In general, all other RF paths are simultaneously opened by internal logic. See
Figure 2-1 for drive connection diagrams.
Figure 2-1 Drive connection diagrams for Option 161 and Option 100
The default operation of the switches is break-before-make. Make-before-break switching can be
accomplished by simultaneously selecting the “drive” pins for old RF path and new RF path. Once
the new RF path is closed (15 ms), de-select the old RF path “drive” pin while leaving the new RF
path “drive” pin selected. The switch circuitry will automatically open the old RF path while leaving
the new RF path engaged.
16 Keysight 8710x Operating and Service Manual
Standard Drive
NOTE
CAUTION
NOTE
1 Connect pin 1 to supply voltage (+20 Vdc to +32 Vdc) and pin 15 to ground.
Pin 15 must always be connected to ground to enable the electronic position-indicating circuitry
and drive logic circuitry.
If pin 15 is not connected to power supply ground, catastrophic failure will occur.
2 Select (close) desired RF path by applying ground to the corresponding “drive” pin; for example
After the RF path is switched and latched, the drive current is interrupted by the electronic
position-sensing circuitry. Pulsed control is not necessary, but if implemented, the pulse width
must be 15 ms minimum to ensure the switch is fully latched.
Switch Configuration 2
ground pin 3 to close RF path 1.
3 To select another RF path, ensure that all unwanted RF path “drive” pins are disconnected from
ground (to prevent multiple RF path engagement). Ground the “drive” pin which corresponds to
the desired RF path.
4 To open all RF paths, ensure that all RF path “drive” pins are disconnected from ground. Then,
connect pin 16 to ground. This feature is not available in option 100.
Keysight 8710x Operating and Service Manual 17
2 Switch Configuration
NOTE
CAUTION
NOTE
TTL Drive (Option T24)
1 Connect pin 1 to supply voltage (+20 Vdc to +32 Vdc) and pin 15 to ground.
Pin 15 must always be connected to ground to enable the electronic position-indicating circuitry
and drive logic circuitry.
In addition to the quiescent current supplying the electronic position-sensing circuitry, the drive
current flows out of pin 15 (during switching) on TTL drive switches (option T24).
If pin 15 is not connected to power supply ground, catastrophic failure will occur.
2 Select (close) desired RF path by applying ground to the corresponding “drive” pin; for example
apply TTL “High” to pin 3 to close RF path 1.
After the RF path is switched and latched, the drive current is interrupted by the electronic
position-sensing circuitry. Pulsed control is not necessary, but if implemented, the pulse width
must be 15 ms minimum to ensure the switch is fully latched.
3 To select another RF path, ensure that all unwanted RF path “drive” pins are at TTL “Low” (to
prevent multiple RF path engagement). Apply TTL “High” to the “drive” pin which corresponds
to the desired RF path.
4 To open all RF paths, ensure that all RF path “drive” pins are at TTL “Low”. Then, apply TTL
“High” to pin. This feature is not available in option 100.
18 Keysight 8710x Operating and Service Manual
Electronic Position Indicators
*Paths 1 and 4 are not connected for 87104P/Q/R
The electronic position indicators consist of optically isolated, solid state relays which are driven by
photo-electric sensors coupled to the mechanical position of the RF path’s moving elements (see
Figure2-2). The circuitry consists of a common which can be connected to an output
corresponding to each RF path. If multiple RF paths are engaged, the position indicator
corresponding to each closed RF path will be connected to common. The solid state relays are
configured for AC and/or DC operation. See “Indicator Specifications” on page 25. The electronic
position indicators require that the supply (20 to 32 VDC) be connected to pin 1 and ground
connected to pin 15.
Switch Configuration 2
Figure 2-2 Pin configuration for indicator function
Keysight 8710x Operating and Service Manual 19
2 Switch Configuration
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
20 Keysight 8710x Operating and Service Manual
Specifications 3
3 Specifications
General Specifications 22
RF Specifications 24
Indicator Specifications 25
Switch Drive Specifications 26
Environmental Specifications 27
Physical Specifications 28
This chapter provides the specifications of the switches.
Specifications refer to the performance standards or limits against which the coaxial multiport
switches are tested.
Typical characteristics are included for additional information only and they are not specifications.
These are denoted as “typical”, “nominal”, or “approximate” and are printed in italics.
Keysight 8710x Operating and Service Manual 21
3 Specifications
General Specifications
Tab l e 3-1 General specifications
Keysight model number 87104P/Q/R and 87106P/Q/R
Maximum power rating 1 watt average into 50 Ω internal loads
Hot switching
Cold switching See Supplemental specifications (cold switching)
Life 3,000,000 cycles minimum
Switching speed 15 ms maximum
1 watt CW
50 W peak, 10 μs max pulse width, not to exceed 1 W average.
Supplemental specifications (cold switching)
Figure 3-1 illustrates the maximum incident CW power (cold switching) from 100 MHz to 26.5 GHz.
The reference conditions are as below:
– Cold switching only (NO hot switching)
– Ambient temperature of 75 °C or less
– Sea level (0.88 derating at 15,000 feet)
– Low VSWR < 1.2 (See Figure 3-2 for derating above 1.2 VSWR)
Figure 3-1 Maximum incident power (cold switching) vs. frequency
22 Keysight 8710x Operating and Service Manual
Figure 3-2 Power derating factor vs. VSWR
Specifications 3
Keysight 8710x Operating and Service Manual 23
3 Specifications
RF Specifications
Tab l e 3-2 RF specifications for 87104P/Q and 87106P/Q
Keysight model number 87104P and 87106P 87104Q and 87106Q
Frequency range DC to 4 GHz DC to 20 GHz
Insertion loss (dB)
Isolation (dB) > 100
SWR < 1.20
Repeatability
Characteristics 50 Ω, terminated 50 Ω, terminated
Connectors SMA (f) SMA (f)
[b]
(dB)
[a]
0.015f
+ 0.3
0.015f
> 100 (DC to 12 GHz)
> 80 (12 to 15 GHz)
> 70 (15 to 20 GHz)
< 1.20 (DC to 4 GHz)
< 1.35 (4 to 12.4 GHz)
< 1.45 (12.4 to 20 GHz)
< 0.03 < 0.03
[a]
+ 0.3
[a] f = frequency in GHz
[b] Up to 3 million cycles, measured at 25 °C
Tab l e 3-3 RF specifications for 87104R and 87106R
Keysight model number 87104R and 87106R
Frequency range DC to 26.5 GHz
Insertion loss (dB)
Isolation (dB)
SWR
[b]
Repeatability
(dB)
Characteristics 50 Ω, terminated
Connectors SMA (f)
[a]
+ 0.3
0.015f
> 100 (DC to 12 GHz)
> 80 (12 to 15 GHz)
> 70 (15 to 20 GHz)
> 65 (20 to 26.5 GHz)
< 1.20 (DC to 4 GHz)
< 1.35 (4 to 12.4 GHz)
< 1.45 (12.4 to 20 GHz)
< 1.70 (20 to 26.5 GHz)
< 0.03
[a] f = frequency in GHz
[b] Up to 3 million cycles, measured at 25 °C
24 Keysight 8710x Operating and Service Manual
Indicator Specifications
Tabl e 3-4 Indicator specifications
Keysight model number 87104P/Q/R and 87106P/Q/R
Maximum withstand voltage 60 V
Maximum current capacity 150 mA
Maximum “ON” resistance 2.5 Ω
Maximum “OFF” resistance 10 GΩ
Specifications 3
Keysight 8710x Operating and Service Manual 25
3 Specifications
Switch Drive Specifications
Tab l e 3-5 Switch drive specifications
Parameter Min Nom Max Unit
Supply voltage, Vcc 202432 V
Supply current, Icc
Supply current (quiescent) 25 50 mA
[a] Switching condition: pulse width ≥ 15 ms (Vcc = 24 VDC).
[b] Closing one RF path requires 200 mA. Add 200 mA for each additional RF path closed or opened. Using all RF paths open (selecting pin 16)
requires 200 mA per RF path reset with Vcc = 24 VDC.
TTL drive (option T24)
Tab l e 3-6 Switch drive specifications for TTL drive (option 24)
[a]
200
[b]
mA
Parameter Min Nom Max Unit
High level input 3 7 V
Low level input 0.8 V
Max high input current
[a] Vcc = Max. Vinput = 3.85 VDC.
[a]
11.4mA
Figure 3-3 TTL control voltage states (Option T24)
26 Keysight 8710x Operating and Service Manual
Environmental Specifications
The N1923/4A low PIM coaxial multiport switches are designed to fully comply with Keysight’s
product operating environmental specifications.
Tabl e 3-7 Environmental specifications
Parameter Specification
Temperature
–Operating
–Storage
–Cycling
Humidity
–Operating
–Storage
–Condensation
Shock
– Non-operating:
– Half-sine
– Transportation
–Operating
Vibration
–Operating
–Survival
– Random
Specifications 3
–25 °C to 75 °C
–55 °C to 85 °C
–50 °C to 150 °C, 10 cycles
40 °C/95% RH, 5 days
65 °C/90% RH, 24 hours
40 °C/95% RH
500 G at 0.5 ms, 3 drops/direction
50 G Vibration: 8 m/s ±10%
50 G at 6 ms, 6 directions
7 G rms, 5 to 2000 Hz at 0.25 in p-p
20 G rms, 20 to 2000 Hz at 0.06 in p-p, 4 min/cycle, 4 cycles/axis
7 G rms, 50 to 2000 Hz, 15 min/axis
ESD immunity
– Direct discharge
– Air discharge
RFI Radiated emission per CISPR 11
Magnetic field
– Operating emission
– Operating immunity
6 kV (to outer conductor)
15 kV (to outer conductor)
AC magnetic emission (1.88 G rms)
DC magnetic emission (5 G)
30 A/M rms at 47 Hz, 50 Hz, 60 Hz, and 189 Hz
150 A/M rms at 47 Hz and 189 Hz
Keysight 8710x Operating and Service Manual 27
3 Specifications
Physical Specifications
Tab l e 3-8 Physical specifications
Parameter Specification
Dimensions Figure 3-4
Net weight, kg (lb) 0.370 (0.82)
Figure 3-4 Dimensions of Keysight 8710x low PIM coaxial multiport switches
28 Keysight 8710x Operating and Service Manual
Keysight 8710x Low PIM Coxial Multiport Switches
Operating and Service Manual
4 Installation and
Verification
Installation 30
Operating and Service Instructions 31
This chapter provides you installation information and simple verification steps of the switches.
29
4 Installation and Verification
Installation
Initial inspection
1 Inspect the shipping container for damage. 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 instrument has been checked both mechanically and electrically.
– Check for mechanical damage such as scratches or dents.
– Procedures for checking electrical performance are given under “Operator’s check” on
page 31 or “Performance test” on page 32.
2 If the contents are incomplete, there is mechanical damage or defect, or the instrument does
not pass the electrical performance test, contact the nearest Keysight Sales and Service office
(refer to “Sales and Technical Support” on page 3). Keysight will arrange for repair or
replacement of the damaged or defective equipment. Keep the shipping materials for the
carrier’s inspection.
3 If you are returning the instrument under warranty or for service, repackaging the instrument
requires original shipping containers and materials or their equivalents. Keysight can provide
packaging materials identical to the original materials. Refer to “Sales and Technical Support”
on page 3 for the Keysight office nearest to you. Attach a tag indicating the type of service
required, return address, model number, and serial number. Mark the container FRAGILE to
insure careful handling. In any correspondence, refer to the instrument by its model number
and serial number.
30 Keysight 8710x Operating and Service Manual
Operating and Service Instructions
CAUTION
Operator’s check
The operator’s check is supplied to allow the operator to make a quick check on the coaxial
multiport switches prior to use or if a failure is suspected.
ESD exceeding the level specified in Environmental Specifications or RF power applied is
greater than the maximum specified as in General Specifications may cause permanent
damage to the device.
Description
The coaxial multiport switch is connected to a network analyzer configured for the S-parameter
measurement. The network analyzer may be set to sweep over the whole or selected frequency
range of the switch to be verified. The S-parameter measurement is the best way to determine if
the switch is working properly.
Installation and Verification 4
Figure 4-1 Connection to perform quick check
Keysight 8710x Operating and Service Manual 31
4 Installation and Verification
NOTE
Quick check procedure
1 Connect the common port of the switch to Port 1 of the network analyzer and one of the outer
RF ports to Port 2 of the network analyzer as illustrated in Figure 4-1.
2 For standard drive, apply ground to the corresponding “drive” pin to close the selected path.
Refer to “Standard Drive” on page 17.
3 For TTL drive (option T24), apply “High” to the corresponding “drive” pin to close the selected
path. Refer to “TTL Drive (Option T24)” on page 18.
4 Perform the S-parameter measurement and verify against “Supplemental specifications (cold
switching)” on page 22.
5 Repeat steps 1 to 4 until all paths are measured and verified.
Performance test
The coaxial multiport switches can be tested to the accuracy of the specifications with a network
analyzer or equivalent equipment of suitable accuracy. If a network analyzer is available, test the
instrument using the procedure in the analyzer’s operating manual.
Service instructions
Adjustment and repair
N1923/4A low PIM coaxial multiport switches do not require internal adjustments and are not
recommended for repair.
If any of the low PIM coaxial multiport switches fails within the warranty period, a new unit will be
replaced. Refer to “Replacement units” on page 33 for more details.
Maintenance
The connectors, particularly the connector faces, must be kept clean. For instructions on
connecting and care of your connectors, refer to the Microwave Connector Care Quick Reference
Card (08510-90360).
32 Keysight 8710x Operating and Service Manual
Installation and Verification 4
NOTE
Replacement units
Tabl e 4-1 Replacement units
Replacement unit Part number
Low PIM switch, SP4T, DC - 4 GHz, terminated with Option 100, 024 87104-60066
Low PIM switch, SP4T, DC - 4 GHz, terminated with Option 100, T24 87104-60067
Low PIM switch, SP4T, DC - 4 GHz, terminated with Option 161, 024 87104-60068
Low PIM switch, SP4T, DC - 4 GHz, terminated with Option 161, T24 87104-60069
Low PIM switch, SP4T, DC - 20 GHz, terminated with Option 100, 024 87104-60070
Low PIM switch, SP4T, DC - 20 GHz, terminated with Option 100, T24 87104-60071
Low PIM switch, SP4T, DC - 20 GHz, terminated with Option 161, 024 87104-60072
Low PIM switch, SP4T, DC - 20 GHz, terminated with Option 161, T24 87104-60073
Low PIM switch, SP4T, DC - 26.5 GHz, terminated with Option 100, 024 87104-60074
Low PIM switch, SP4T, DC - 26.5 GHz, terminated with Option 100, T24 87104-60075
Low PIM switch, SP4T, DC - 26.5 GHz, terminated with Option 161, 024 87104-60076
Low PIM switch, SP4T, DC - 26.5 GHz, terminated with Option 161, T24 87104-60077
Low PIM switch, SP6T, DC - 4 GHz, terminated with Option 100, 024 87106-60094
Low PIM switch, SP6T, DC - 4 GHz, terminated with Option 100, T24 87106-60095
Low PIM switch, SP6T, DC - 4 GHz, terminated with Option 161, 024 87106-60096
Low PIM switch, SP6T, DC - 4 GHz, terminated with Option 161, T24 87106-60097
Low PIM switch, SP6T, DC - 20 GHz, terminated with Option 100, 024 87106-60098
Low PIM switch, SP6T, DC - 20 GHz, terminated with Option 100, T24 87106-60099
Low PIM switch, SP6T, DC - 20 GHz, terminated with Option 161, 024 87106-60100
Low PIM switch, SP6T, DC - 20 GHz, terminated with Option 161, T24 87106-60101
Low PIM switch, SP6T, DC - 26.5 GHz, terminated with Option 100, 024 87106-60102
Low PIM switch, SP6T, DC - 26.5 GHz, terminated with Option 100, T24 87106-60103
Low PIM switch, SP6T, DC - 26.5 GHz, terminated with Option 161, 024 87106-60104
Low PIM switch, SP6T, DC - 26.5 GHz, terminated with Option 161, T24 87106-60105
The above list of replacement units is not applicable as customer-orderable units. The list only
applies for any low PIM coaxial multiport switch which fails within the warranty period.
Keysight 8710x Operating and Service Manual 33
4 Installation and Verification
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.
34 Keysight 8710x Operating and Service Manual
This information is subject to change
without notice. Always refer to the
Keysight website for the latest
revision.
© Keysight Technologies 2014 - 2019
Edition 3, March 14, 2019
Printed in Malaysia
*87104-80017*
87104-80017
www.keysight.com
Loading...