Keysight 42942A Operation manual

Operation and
Service Manual
Keysight 42942A Terminal Adapter,
40 Hz to 110 MHz

Notices
© Keysight Technologies
1999 - 2019
No part of this manual may be repro-
duced in any form or by any means
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copyright laws.
Manual Part Number
42942-90020
Edition
Edition 6, August 21, 2019
Printed in Malaysia
Published by:
Keysight Technologies International
Japan G.K,
1-3-3 Higashikawasaki-cho
Chuo-ku
Kobe-shi, Hyogo, Japan
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Keysight 42942A Terminal Adapter 3
Contents
1. Installation Guide
Incoming Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Connecting the 42942A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2. Overview
Product Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3. Operation
Impedance Analyzer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Adapter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Connecting Test Fixture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Fixture Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Performing Open Compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Performing Short Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Performing Load Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Fixture Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4. Specifications
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5. Service
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

4 Keysight 42942A Terminal Adapter
Contents

Keysight 42942A Terminal Adapter 5
Installation Guide
Incoming Inspection
1 Installation Guide
Incoming Inspection
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 42942A has been
checked mechanically and electrically. The shipment should contain
everything listed in Table 1-1. If the contents are incomplete or if there is
mechanical damage or defect, notify the nearest Keysight Technologies office.
If the shipping container is damaged or the cushioning material shows signs of
unusual stress, notify the carrier as well as the Keysight Technologies office.
Keep the shipping materials for the carrier’s inspection.
Table 1-1 Contents
Description Part Number Qty.
42942A Terminal Adapter - 1
OPEN104191-85302 1
SHORT104191-85300 1
LOAD104291-60043 1
Operation and Service Manual Option ABA 1
Carrying Case 42942-60011 1
1. Furnished with Option 700.

6 Keysight 42942A Terminal Adapter
Installation Guide
Connecting the 42942A
Connecting the 42942A
Follow the steps below to connect the 42942A to the Impedance Analyzer.
Step 1. Join the 42942A terminal adapter to the test connectors on the front panel of
the Impedance Analyzer by gently matching the four BNC connectors and
fastening screws of the adapter with the test connectors and accessory
mounting holes of the instrument until they come into complete contact.
Step 2. Turn the adapter’s two fastening screws clockwise at the same time until the
fixture is firmly secured to the instrument.
Figure 1-1 Connecting 42942A to Impedance Analyzer

Keysight 42942A Terminal Adapter 7
Installation Guide
Cleaning
Cleaning
Even a tiny amount of dirt on the 7-mm connector of the OUTPUT port would
greatly degrade the accuracy of your measurement. Use a lint-free cloth to
clean the connector if it gets dirty.
Serial Number
Keysight Technologies uses a ten-character serial number that is stamped on
the serial number plate attached to the bottom of the four-terminal pair
connection block. The first two characters shows the made-in country, the next
three digits are assigned as the serial prefix, and the last five digits are the
suffix.

8 Keysight 42942A Terminal Adapter
Installation Guide
Serial Number

Keysight 42942A Terminal Adapter 9
Overview
Product Overview
2 Overview
Product Overview
The 42942A is an adapter equipped with a 7-mm coaxial connector that
connects a test fixture furnished with the same type of connector to the
Impedance Analyzer.
Figure 2-1 Product Overview

10 Keysight 42942A Terminal Adapter
Overview
Functions
Functions
Figure 2-2 and Figure 2-3 show the names of the 42942A’s parts and contents
of the option 700, respectively.
Figure 2-2 42942A Parts
Table 2-1 42942A Function
No. NAME FUNCTION
1 OUTPUT Port Contact for the test fixture furnished with a 7-mm
coaxial connector.
2 Mounting Post Guide and support post for fixture connection.
3 Adapter Fastening
Screws
Secures the fixture to the Impedance Analyzer.

Keysight 42942A Terminal Adapter 11
Overview
Functions
Figure 2-3 Option 700 7-mm Open/Short/Load Set
Table 2-2 Contents of the Option 700
No. NAME FUNCTION
4 OPEN An open device (OPEN, 0 S) used for the adapter setup.
5 SHORT A short device (SHORT, 0 Ω) used for the adapter setup.
6 LOAD A load device (50 Ω) used for the adapter setup.

12 Keysight 42942A Terminal Adapter
Overview
Functions

Keysight 42942A Terminal Adapter 13
Operation
Impedance Analyzer Setup
3 Operation
This chapter describes the proper methods for adapter setup of the 42942A,
connecting a fixture, and fixture compensation.
Impedance Analyzer Setup
Before beginning measurements, you should perform the adapter setup. The
following procedure shows adapter setup for the 42942A. Also refer to the help
manual of the Impedance Analyzer for more information on adapter setup.
Adapter Setup
Connect the 42942A to the Impedance Analyzer and perform the adapter
setup as described below.
1. Power on the Impedance Analyzer. Allow 30 minutes or longer for warm-up.
2. Press the [Cal] key to bring up the Calibration Menu.
3. Press the Adapter [ ] key to bring up the Adapter Setup Menu. []should
indicate current settings.
4. Select 7mm 42942A. When selected, the softkey label will have a dot
beside it.
5. Press the Adapter Setup key to bring up the Adapter Setup Menu.
When handling the 42942A, care must be taken not to give it any
mechanical shock, which may damage the adapter. Never give any
mechanical shock to the upper face with the 7-mm connector’s mouth. Also,
do not place the 42942A with the upper face down on a hard surface.
If the ambient temperature deviates by more than 5 ˚C from the temperature
in which the adapter setup was done, it is recommended that you perform
the adapter setup again in the ambient temperature.

14 Keysight 42942A Terminal Adapter
Operation
Impedance Analyzer Setup
6. Turn the 7-mm OUTPUT port connector clockwise until the connector
sleeve is fully exposed.
Even a tiny amount of dirt on the 7-mm OUTPUT port connector would
greatly degrade the accuracy of your measurement. Keep the connector
clean and never touch the mating plane surfaces. Use a lint-free cloth to
clean the connector if it gets dirty.
Figure 3-1 Extending Connector Sleeve
7. Connect the OPEN standard to the 7-mm OUTPUT port connector.
The 7-mm OUTPUT port connector is sensitive to damage and thus requires
careful handling. When not used, protect the mating plane surfaces with end
caps.
Never store the OPEN standard loosely in a box or drawer because this may
result in damage to the mating plane surfaces. Do not drop the OPEN
standard or give it any strong mechanical shock.

Keysight 42942A Terminal Adapter 15
Operation
Impedance Analyzer Setup
Figure 3-2 Connecting OPEN Standard
8. Press the Phase [-] key to start the phase compensation data
measurement.
When the phase compensation data measurement is completed, the
softkey label changes to Phase [Done]. Press the Save Phase key.
9. Press the Open [-] key to start the open data measurement. When the open
data measurement is completed, the softkey label changes to Open [Done].
10.Remove the OPEN standard and connect the SHORT standard to the 7-mm
OUTPUT port connector.
Never store the SHORT standard loosely in a box or drawer because this may
result in damage to the mating plane surfaces. Do not drop the SHORT
standard or give it any strong mechanical shock.

16 Keysight 42942A Terminal Adapter
Operation
Impedance Analyzer Setup
Figure 3-3 Connecting SHORT Standard
11.Press the Short [-] key to start the short data measurement.When the short
data measurement is completed, the softkey label changes to Short [Done].
12.Remove the SHORT standard from the 7-mm OUTPUT port connector of the
42942A. Then connect the LOAD standard to the 7-mm port.
Never store the LOAD standard loosely in a box or drawer because this may
result in damage to the mating plane surfaces. Do not drop the LOAD
standard or give it any strong mechanical shock. When not used, protect the
mating plane surfaces with end caps.

Keysight 42942A Terminal Adapter 17
Operation
Impedance Analyzer Setup
Figure 3-4 Connecting LOAD Standard
13.Press the Load [-] key to start the load data measurement. When the load
data measurement is completed, the softkey label changes to Load [Done].
14.Press the Save Impedance key.

18 Keysight 42942A Terminal Adapter
Operation
Connecting Test Fixture
Connecting Test Fixture
After the adapter setup, you can connect the test fixture to the terminal
adapter. Refer to the manual that came with the fixture for the connection
procedure. The connection procedure shown below is common to most
fixtures.
1. Turn the 7-mm OUTPUT port connector on the terminal adapter
counterclockwise until the connector sleeve is fully retracted.
2. Join the test fixture to the terminal adapter by keying the mounting posts
and the OUTPUT port of the adapter.
3. Turn the 7-mm OUTPUT port connector on the terminal adapter
counterclockwise to secure it to the connector on the lower side of the test
fixture.
Figure 3-5 Connecting Test Fixture

Keysight 42942A Terminal Adapter 19
Operation
Fixture Compensation
Fixture Compensation
To compensate for any residual impedance and admittance existing in the test
fixture, perform fixture compensation. The fixture compensation requires
measurements with the 42942A for open and short compensation data.
Generally, there is no need to perform load compensation. For more
information on fixture compensation, refer to the Impedance Analyzer Help
Manual.
Performing Open Compensation
The following procedure is for measurement of the open compensation data.
1. Be sure that the fixture is open, without any connection between the
measurement terminals.
2. Press the [Cal] key to bring up the Calibration Menu.
3. Press the Fixture Compen key to bring up the Fixture Compensation Menu.
4. Press the Open ( ) key to start the OPEN compensation data measurement.
( ) should indicate the defined Open value. When the OPEN compensation
data measurement is completed, the softkey label Open [OFF] (if it is off)
changes to Open [ON].
Performing Short Compensation
The following procedure is for measurement of the short compensation data.
1. Put the terminal of the test fixture into the SHORT state. For more
information on shorting methods, refer to the manual that came with the
fixture.
2. Press the Short ( ) key to start the SHORT compensation data
measurement. ()should indicate the defined Short value.When the SHORT
compensation data measurement is completed, the softkey label Short
[OFF] (if it is off) changes to Short [ON].
Electrical length is noted on the test fixture and its furnished manual. There
is no need to set the electrical length in the Impedance Analyzer when using
the 42942A. The OPEN/SHORT compensation could eliminate the error.

20 Keysight 42942A Terminal Adapter
Operation
Fixture Compensation
Performing Load Compensation
Generally, there is no need to perform load compensation. If you have any
standard device or you need to keep consistency in measured data, perform
the load compensation by using the device. When you perform load
compensation, set the load value of the device to the instrument.
The following procedure is for the measurement of the load compensation
data.
1. Define the load value by pressing Define Value.
2. Connect the load device to the terminal of the test fixture. For more
information on connecting methods, refer to the manual that came with the
fixture.
3. Press the Load ( ) key to start the LOAD compensation data measurement.
( ) should indicate defined Load value. When the LOAD compensation data
measurement is completed, the softkey label Load [OFF] (if it is off) changes
to Load [ON].