Tektronix 707B, 708B Primary User
Models 707B and 708B
Switching Matrix
User’s Manual
707B-900-01 Rev. C / July 2019
tek.com/keithley
*P707B-900-01C*
707B-900-01C
Switching Matrix
Models 707B and 708B
User's Manual
© 2019, Keithley Instruments, LLC
Cleveland, Ohio, U.S.A.
All rights reserved.
Any unauthorized reproduction, phot ocopy, or use of the information herein, in whole or in part,
without the prior written approval of Keithley Instruments, LLC, is strictly prohibited.
These are the original instructions in English.
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Instruments product names are trademarks or registered trademarks of Keithley Instruments, LLC.
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Document number: 707B-900-01 Rev. C / July 2019
Safety precautions
The following safety precautions should be observed before using this product and any associated instrumentation. Although
some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous
conditions may be present.
This product is intended for use by personnel who recognize shock hazards and are familiar with the safety precautions required
to avoid possible injury. Read and follow all installation, operation, and maintenance information carefully before using the
product. Refer to the user documentation for complete product specifications.
If the product is used in a manner not specified, the protection provided by the produc t warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the
equipment is operated within its specifications and operating limits, and for ensuring that operators ar e adequately trained.
Operators use the product for its intended function. They must be traine d in electrical safety procedures and pr oper use of the
instrument. They must be protected from electric shock and contact with h azardous live circuits.
Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting the line
voltage or replacing consumable materials. Maintenance procedures ar e described in the user documentation. The procedures
explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.
Service personnel are trained to work on live circuits, perform safe installations, and repair products. Only properly trained
service personnel may perform ins tallation and service procedures.
Keithley products are designed for us e with electrical signals that are measurement, control, and data I/O connecti ons, with low
transient overvoltages, and mus t not be directly connected to mains voltage or to voltage sources with high tr ans ient
overvoltages. Measurement Categ ory II (as referenced in IEC 60664) connections require protection for high transient
overvoltages often associated with local AC mains connections. Certai n K ei thley measuring instruments may be connected to
mains. These instruments will be mar k ed as category II or higher.
Unless explicitly allowed in the spec i fications, operating manual, and instrument labels, do not connect any instrument to mains.
Exercise extreme caution when a shock hazard is present. Lethal voltage m ay be present on cable connector jacks or test
fixtures. The American National S tandards Institute (ANSI) states that a shock hazard exists when voltage levels greater than
30 V RMS, 42.4 V peak, or 60 VDC are present. A good safety practice is to expect that hazardous voltage is present in any
unknown circuit before measuring.
Operators of this product must be protec ted from electric shock at all times. The responsible body must ensure that operators
are prevented access and/or insulated from every connection point. In some c ases, connections must be exposed to potential
human contact. Product operators i n these circumstances must be trained to pr otect themselves from the risk of electric shock. If
the circuit is capable of operating at or above 1000 V, no conductive part o f the circuit may be exposed.
Do not connect switching cards direc tly to unlimited power circuits. They are intended to be used with impedance-limited
sources. NEVER connect switching cards directly to AC mains. When conn ec ting sources to switching cards, ins tall protective
devices to limit fault current and v ol tage to the card.
Before operating an instrument, ensure that the line cord is connected to a properly-grounded power receptacle. Inspect the
connecting cables, test leads, and j umpers for possible wear, cracks, or breaks before each use.
When installing equipment where ac cess to the main power cord is restricted, such as rack mounting, a separate main input
power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator.
For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit under
test. ALWAYS remove power from the entire test system and discharge any ca pac i tors before: connecting or disconnecting
cables or jumpers, installing or rem oving switching cards, or making int er nal changes, such as installing or removing jumpers.
Do not touch any object that could provide a current path to the common side of the c i rcuit under test or power line (e ar th)
ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstandin g the
voltage being measured.
For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or
accessories are used in a manner not s pecified in the operating instructions, the protection provided by the equipment may be
impaired.
Do not exceed the maximum signal lev els of the instruments and accessories . Maximum signal levels are defined in the
specifications and operating inf or mation and shown on the instrument panels, test fixture panels, and switching cards.
When fuses are used in a product, replac e with the same type and rating for continued protection against fire hazard.
Chassis connections must only be used as shield connections for measuring cir cuits, NOT as protective earth (safety ground)
connections.
If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requir es the use
of a lid interlock.
If a
screw is present, connect it to prot ective earth (safety ground) using the wire r ecommended in the user documentation.
The symbol on an instrument means caution, risk of hazard. The user must refer to t he operating instructions located in the
user documentation in all cases where the symbol is marked on the instrument .
The symbol on an instrument means warning, risk of electric shock. Use standard saf ety precautions to avoid personal
contact with these voltages.
The
The
If this
symbol on an instrument shows that the sur face may be hot. Avoid personal contact to prevent burns.
symbol indicates a connection termin al to the equipment frame.
symbol is on a product, it indicates th at mercury is present in the display lamp. Please note that the lamp must be
properly disposed of according to federal, state, and local laws.
The WARNING heading in the user documentation explains hazards that might result in personal injury or death. Always read
the associated information ver y car efully before performing the indicated procedure.
The CAUTION heading in the user documentation explains hazards that could damage the inst rument. Such damage may
invalidate the warranty.
The CAUTION heading with the
symbol in the user documentation explains hazards that could result in moderate or minor
injury or damage the instrument. Always read the associated information very carefully before performing the indicated
procedure. Damage to the instrument may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fire, replacement components in mains circuits — including the power
transformer, test leads, and input j ac ks — must be purchased from Keithley. S tandard fuses with applicable national safety
approvals may be used if the rating and type are the same. The detachable mains p ower cord provided with the instrument may
only be replaced with a similarly rated power cord. Other components that ar e not safety-related may be purchased from other
suppliers as long as they are equival ent to the original component (note that selected parts should be purchased only through
Keithley to maintain accuracy and functionality of the product). If you are unsure about the applicabilit y of a replacement
component, call a Keithley office for information.
Unless otherwise noted in product-specific literature, Keithley instruments are designed to operate indoors only, in the following
environment: Altitude at or below 2,000 m (6,562 ft); temperature 0 °C to 50 °C (32 °F to 122 °F); and pollution degree 1 or 2.
To clean an instrument, use a cloth dampened with deionized water or mild, water-based cleaner. Clean the exteri or of the
instrument only. Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that
consist of a circuit board with no case or chassis (e.g., a data acquisition board for installation into a com puter) should never
require cleaning if handled acc or ding to instructions. If the board becomes contaminated and operation is affected, the board
should be returned to the factor y for proper cleaning/servicing.
Safety precaution revision as of June 2017.
Table of contents
Introduction ................................................................................................................ 1-1
Introduction to this manual ................................................................................................... 1-1
Models 707B and 708B applications .................................................................................... 1-1
Extended warranty ............................................................................................................... 1-2
Contact information .............................................................................................................. 1-2
Documentation set ............................................................................................................... 1-2
Using the front-panel interface ................................................................................. 2-1
Introduction .......................................................................................................................... 2-1
Model 707B front panel ........................................................................................................ 2-2
Model 708B front panel ........................................................................................................ 2-3
Keys and navigation wheel .................................................................................................. 2-3
POWER switch .......................................................................................................................... 2-3
Navigation wheel ....................................................................................................................... 2-3
DISPLAY key ............................................................................................................................ 2-4
CONFIG key .............................................................................................................................. 2-4
Keys .......................................................................................................................................... 2-4
LAN status light ......................................................................................................................... 2-6
Display.................................................................................................................................. 2-7
Specifying a channel ............................................................................................................ 2-8
Channel types ........................................................................................................................... 2-8
Matrix card channel specifiers ................................................................................................... 2-8
Operating a channel from the front panel ............................................................................ 2-9
Exercise: Select and close slot 1, r ow C, column 7 crosspoint ................................................ 2-10
Crosspoint display (Model 707B only) ............................................................................... 2-11
Selecting and closing channels using the crosspoint display .................................................. 2-12
Exercise: Select crosspoint on s lot 2, row C, column 3 ........................................................... 2-12
Viewing the close or open status of a channel .................................................................. 2-13
Channel patterns ................................................................................................................ 2-13
Create a channel pattern ......................................................................................................... 2-13
Performing close and open operations on channel patterns ................................................... 2-14
Set up row, column, and channel labels ............................................................................ 2-15
Exercise: Create a row label for row D using the front panel .................................................. 2-16
Using the web interface ............................................................................................. 3-1
Introduction .......................................................................................................................... 3-1
Connecting to the instrument web interface ........................................................................ 3-1
Web interface home page .................................................................................................... 3-2
Log in to the instrument........................................................................................................ 3-2
Card pages ........................................................................................................................... 3-4
Open and close channels from the card pages ......................................................................... 3-4
Table of contents
User's Manual
Models 707B and 708B Switching Mat r i x
Set up channel patterns from the web interface ........................................................................ 3-7
Scan Builder page ................................................................................................................ 3-9
Create a scan list .................................................................................................................... 3-10
Run the scan ........................................................................................................................... 3-11
Stop the scan .......................................................................................................................... 3-11
Clear the scan list from the web interface ............................................................................... 3-12
Set up simple triggers ............................................................................................................. 3-12
TSB Embedded .................................................................................................................. 3-13
Create a script using TSB Embedde d ..................................................................................... 3-13
Working with the 4200-SCS or 4200A-SCS .............................................................. 4-1
Introduction .......................................................................................................................... 4-1
Equipment required to run the example ............................................................................... 4-1
Configure Model 707B or 708B for 4200-SCS or 4200A-SCS ............................................ 4-2
Add Model 707B or 708B to 4200-SCS ............................................................................... 4-3
Add Model 707B or 708B to 4200A-SCS ............................................................................. 4-4
Next steps ............................................................................................................................ 4-7
Working with the Series 2600B ................................................................................. 5-1
About the Series 2600B examples ....................................................................................... 5-1
Equipment required to run the examples ............................................................................. 5-3
Connect the equipment ........................................................................................................ 5-3
Logical block diagram of test connections ........................................................................... 5-5
Example 1: Control with separate interfaces ....................................................................... 5-5
Set up communication ............................................................................................................... 5-6
Example program code for the Model 70 7B or 708B ................................................................ 5-6
Example program code for the Model 26 35B ............................................................................ 5-7
Example code to run the test ..................................................................................................... 5-7
Example 2: Using TSP-Link to configure instruments ......................................................... 5-8
Set up communication ............................................................................................................... 5-8
Example program code ........................................................................................................... 5-10
Example code to run the test ................................................................................................... 5-11
Example 3: Configure using TSP-Link and int eractive triggers ......................................... 5-12
Set up communication ............................................................................................................. 5-12
Example program code ........................................................................................................... 5-13
Program code to run the test ................................................................................................... 5-15
Example 4: Using the scanning and triggering model ....................................................... 5-16
Set up communication ............................................................................................................. 5-16
Program code .......................................................................................................................... 5-16
Program code to run the test ................................................................................................... 5-19
Using background scans for longer scan lists ......................................................................... 5-19
Working with the Series 2400 ................................................................................... 6-1
About the Series 2400 examples ......................................................................................... 6-1
Equipment required to run the examples ............................................................................. 6-1
Models 707B and 708B
of contents
Switching Matrix User's Manual Table
Connect the equipment ........................................................................................................ 6-2
Logical block diagram of test connections ........................................................................... 6-3
Example 1: Individual commands for switch-measure ......................................................... 6-3
Example program code for the Model 24 00 .............................................................................. 6-3
Example program code for the Model 707B or 708B ................................................................ 6-4
Example code to run the test ..................................................................................................... 6-4
Example 2: Digital I/O triggering for switch-mea sure synchronization ................................ 6-5
Example program code for the Model 2400 .............................................................................. 6-5
Example program code for the Model 70 7B or 708B ................................................................ 6-6
Alternate method for creating a list of crosspoints ..................................................................... 6-8
Overview of running the test...................................................................................................... 6-8
Example code to run the test ..................................................................................................... 6-8
Troubleshooting FAQs .............................................................................................. 7-1
About this section ................................................................................................................. 7-1
How do I change the line frequency or voltage? .................................................................. 7-1
How do I get the 4200-SCS or 4200A-SCS to recognize the s witch matrix? ...................... 7-1
How do I run 707A or 708A software on the 707B or 7 08B? ............................................... 7-2
Does this model have Matrix Ready and External Trigger li nes? ........................................ 7-3
Why doesn't the Model 707B or 708B recognize my sw i tch card? ...................................... 7-3
How do I access the internal web page of the instrument ? ................................................. 7-4
Why is there an error when I try to close a channel? ........................................................... 7-5
Why are the switch relays not closing? ................................................................................ 7-5
How do I save the present state of the instrument? ............................................................ 7-5
Where can I get the LabVIEW driver? ................................................................................. 7-5
Next steps ................................................................................................................... 8-1
Next steps ............................................................................................................................ 8-1
Documentation set ................................................................... 1-2
In this section:
Introduction to this manual ....................................................... 1-1
Models 707B and 708B applications ........................................ 1-1
Extended warranty ................................................................... 1-2
Contact information .................................................................. 1-2
Introduction to this manual
This manual provides detailed tutorials to help y ou achieve success with your Keithley Instruments
Model 707B or 708B Semiconductor Switching Matrix. In addition, this manual provides the basics of
the two simplest Models 707B and 708B interfaces, the front panel and the web interface, to
familiarize you with the instrument. You can also f am i liarize yourself with the instrument by running
the examples in this manual that are relevant to y our intended use and to the equipment you are
using.
Section 1
Introduction
Some of the examples in this manual may use unfamiliar commands and concepts. For detailed
information about these, refer to the Models 707B and 708B Reference Manual.
Models 707B and 708B applications
Unlike a standalone instrument, the Keithley Instruments Models 707B and 708B are switching
systems that are used to intelligently connect other i nstruments to multiple devices. This manual
provides application examples that guide you through several common instrument-to-device switching
scenarios. These applications are presented after the summary information about the switching matrix,
and include:
• Working with the Model 4200-SCS or 4200A-SCS (on page 4-1): Demon strates how to connect
the Keithley Instruments Model 4200 or 4200A S em iconductor Characterization System to a
Model 707B or 708B. This enables the 4200-SCS o r 4200A-SCS automate measurements to
multiple devices for DC, C-V, and pulsed I -V char act erization.
• Working with the Series 2600B (on page 5-1): Demo nstrates how to use the Model 707B or 708B
with a Keithley Instruments Series 2600B System SourceMeter® instrument to perform an I-V
sweep across a diode.
Section
User's Manual
1: Introduction Models 707B and 708B Switching Mat r i x
• Working with the Series 2400 (on page 6-1): Demonstrates the basic interaction of the Model
707B or 708B with a Keithley Instruments Model 240 0 SourceMeter instrument, including how to
use digital I/O triggering to synchronize source and m easure actions between the Model 707B or
708B and the Model 2400. The concepts in these ex amples can be applied when used using the
Model 707B or 708B with other SCPI-based instruments.
Extended warranty
Additional years of warranty coverage are available on many products. These valuable contracts
protect you from unbudgeted service expenses and p rovide additional years of protection at a fraction
of the price of a repair. Extended warranties are available on new and existing products. Contact your
local Keithley Instruments office, sales partner, or distributor for details.
Contact information
If you have any questions after you review the information in this documentation, please contact your
local Keithley Instruments office, sales partner, or dist ributor. You can also call the corporate
headquarters of Keithley Instruments (toll -f ree inside the U.S. and Canada only) at 1-800-935-5595,
or from outside the U.S. at +1-440-248-0400. For worldwide contact numbers, visit the
Instruments website (tek.com/keithley).
Keithley
Documentation set
The Models 707B and 708B documentation is suppo rted by the following technical/product
information documentation.
• Quick Start Guide: Provides unpacking instructio ns, describes basic connections, reviews basic
operation information, and provides a quick te st procedure to ensure the instrument is
operational.
• User’s Manual: Provides application examples that you can use as a starting point to create your
own applications.
• Reference Manual: Includes advanced operation topics, maintenance information,
troubleshooting procedures, and in-depth descriptions of programming commands.
• Accessories information: Documentation for accessories that are available for the Models 707B
and 708B.
For the latest drivers and additional support information, see tek.com/keithley
.
1-2 707B-900-01 Rev. C / July 2019
Set up row, column, and channel labels ................................. 2-15
Section 2
Using the front-panel interface
In this section:
Introduction .............................................................................. 2-1
Model 707B front panel ............................................................ 2-2
Model 708B front panel ............................................................ 2-3
Keys and navigation wheel....................................................... 2-3
Display ..................................................................................... 2-7
Specifying a channel ................................................................ 2-8
Operating a channel from the front panel ................................. 2-9
Crosspoint display (Model 707B only) .................................... 2-11
Viewing the close or open status of a channel ....................... 2-13
Channel patterns .................................................................... 2-13
Introduction
Before starting this section, complete the t ask s out l i ned in the Models 707B and 708B Quick Start
Guide and install a switch card in the switching matrix. Once you have completed those tasks, read
this section, which provides enough basic inform ation about the Models 707B and 708B front-panel
interfaces to work through the examples provided in this manual.
The front panel of the Keithley Instruments Model 707B or 708B contains:
• The display
• The crosspoint display (Model 707B only)
• The keys and navigation wheel
• The LAN status indicator
• The POWER button
You can use the keys, displays, and the navigation wheel
channel pattern. You can also use them to access, view, and edit the menu items. The crosspoint
display on the Model 707B shows you which channe l s are opened and closed.
For additional information about the front panel, se e t he " F ront-panel operation" section in the Models
707B and 708B Reference Manual.
to change the selected channel or
Section
User's Manual
2: Using the front-panel interface Models 707B and 708B Switching Mat r i x
Model 707B front panel
The front panel of the Model 707B is shown belo w.
Figure 1: 707B front panel
2-2 707B-900-01 Rev. C / July 2019
Models 707B and 708B
panel interface
Switching Matrix User's Manual Section 2: Using the front-
Model 708B front panel
The front panel of the Model 708B is shown belo w.
Figure 2: 708B front panel
Keys and navigation wheel
The keys and navigation wheel on the front panel allow you to turn on, set up, and op erate the
instrument from the front panel.
POWER switch
The POWER switch. Press this key to turn the instrument on (|). Press it again to t urn t he instrument
off (0).
Navigation wheel
Turn the navigation wheel to scroll to a menu option or to change the selected value.
Push the navigation wheel
pressing the navigation wheel
On the Model 707B, you can use the navigation wheel
crosspoint display.
to open menus or to select a menu option or a value. In most cases,
performs the same action as pressing the ENTER key.
to control which slot is displayed on the
707B-900-01 Rev. C / July 2019 2-3
Section
User's Manual
2: Using the front-panel interface Models 707B and 708B Switching Mat r i x
To change a value with multiple characters:
1. Turn the navigation wheel
when selected).
2. Press the navigation wheel
3. Turn the navigation wheel
4. Press the navigation wheel
5. Repeat these steps as needed to change the value.
6. Press the ENTER key or the navigation wheel
DISPLAY key
The DISPLAY key cycles between three screens: The channel display or pattern display, the closed
channel list, and the user screen text, which is set with display.settext().
When the closed channel listing is displayed, i f t he li st of chan nels is longer than one screen, you can
use the navigation wheel
CONFIG key
The CONFIG key accesses attribute menus in which you can configur e channels and scans.
Select CONFIG and then CHAN to open the Channel Attribute menu.
to go to the character you want to change (the charact er blinks
to edit that character.
to change the value.
to keep the change.
when finished changing all the characters.
to scroll though the list of closed channels.
Keys
Select CONFIG and then SCAN to open the Scan Attribute menu.
The top row of keys under the display allows you t o open and close channels, work with scan lists,
and load and run scripts.
Figure 3: 707B and 708B top row of keys
2-4 707B-900-01 Rev. C / July 2019
Models 707B and 708B
panel interface
OPEN ALL
Opens all closed channels.
STEP
If a scan list has been defined, press STEP to step through the list.
Each press is one scan step. See Basic scan procedure.
OPEN
Opens the selected channel or channel pattern.
CLOSE
Closes the selected channel or channel pattern.
LOAD
Loads code or scripts that can be run from the front panel.
RUN
Runs the last code or script selected through the LOAD key.
INS
Appends the selected channel or chan nel pattern to the scan list.
DEL
Deletes the first occurrence of the s elected channel or channel
pattern from the scan list.
Switching Matrix User's Manual Section 2: Using the front-
Key descriptions
Key Description
Also see:
• For detail on using OPEN ALL, STEP, OPEN, and CLOSE: Closing and opening channels.
• For detail on using LOAD and RUN: LOAD TEST menu options.
• For detail on using INS and DEL: Front-panel scanning.
The bottom row of keys allows you access menus and set up channels, patterns, cards, scans,
triggers, and general instrument operation.
Figure 4: Bottom row of keys
707B-900-01 Rev. C / July 2019 2-5
Section
User's Manual
CHAN
If a channel is displayed, opens the CHANNEL ACTION menu options, which allows you to
view.
PATT
If a pattern is displayed, opens the PA TTERN ACTION menu options, which allows you to
pressing PATT changes to display a pat tern.
SLOT
Displays information about the inst alled cards and the instrument. Information includes the
firmware revision, model name, and model number.
SCAN
Opens the SCAN ACTION menu options, which allows you to run, manage, view, and re s et
scan lists.
TRIG
Generates a trigger that can be used in a script or the trigger model.
MENU
I/O settings, set up the beeper, and display instrument informat i on.
EXIT
This key:
Aborts a script that is executing.
ENTER
Accepts the current selection or brings up the next menu option. In most cas es, pressing
ENTER is the same as pressing the navigation wheel .
2: Using the front-panel interface Models 707B and 708B Switching Matrix
Key descriptions
Key Description
open and close channels. If a pattern is displayed, pressing CHAN switche s to channel
manage patterns, open and close patterns , and reset them. If a channel is displaye d,
Opens the Main menu options, which al l ows you to manage scripts, manage
communications, select channel connections, test the keys, test the display, manage digital
Cancels the current selection and returns to the previous menu item.
Exits remote operation so you can control the instrument from the front panel.
Aborts a scan that is running.
LAN status light
The Models 707B and 708B has three status lights on the front panel.
The 1588 status light indicates 1588 operation. I f this light is off, the 1588 feature is disabled or
improperly configured. If the light blinks at a one-second rate, the instrument is the 1588 master. If t he
instrument is a slave, the light will not blink.
The LAN status light is lit when the instrument is con nected through the local area network (LAN) with
no errors. If this is not lit, the instrument is not connected through the LAN or there is a connection
problem.
If you are using the web interface, the LAN Status li ght blinks when you click ID.
The Power light is lit when power is applied to the instrument.
2-6 707B-900-01 Rev. C / July 2019
Models 707B and 708B
panel interface
Display
This section describes the front-panel display of the Models 70 7B and 708B.
During operation, the display provides information about the selected channel, channel pattern,
channel state, and errors. You can press DISPLAY to cycle between the display of the channel or
pattern, the closed channel list, or a screen mess age.
During setup, the display shows menu choices that you can use to configure the instrument.
During operation, the display shows the control status (local or remote) and the current channel, and
indicates if any channels are closed. An example is shown below.
The control status is shown in the upper left corner of the di splay. If REM is displayed, the instrument
is being controlled remotely (through GPI B , LAN, or USB). If REM is not displayed, control is through
the front panel.
Switching Matrix User's Manual Section 2: Using the front-
Figure 5: Display during operation
By default, the top line of the display shows the slot, row, and column of the selected channel.
707B-900-01 Rev. C / July 2019 2-7
Section
User's Manual
1A05 or 1105*
1
N/A 1 05
1C05
1
N/A 3 05
3C12
3
N/A 3 12
* Specifier depends on card type. See your card documentation for detail.
2: Using the front-panel interface Models 707B and 708B Switching Mat r i x
Specifying a channel
The channels on the cards that you can use with the M odel 707B or 708B are referred to by a
channel specifier. You will use the specifier to identif y channels for use with close and open
operations, scans, and channel patterns. The s pecifier is used for all interfaces (front panel, web, and
remote command).
A channel specifier is a four or five-digit alphanumeric sequence. The first digit is always the slot
number of the slot in which the card is installed in the instrument. The remaining digits vary
depending on the type of card.
The following sections describe the channel spe cifier in more detail and provide generic examples
(which may or may not be suitable for your installed cards).
Channel types
The Models 707B and 708B support cards with matrix channels. The documentation for your card
model lists the available channel types.
Specify multiple channel numbers using li sts. Li st s build on the individual channel specifier.
Matrix card channel specifiers
The channels on the matrix cards are referred to by their slot, bank, row, and column numbers:
• Slot number: The number of the slot in which the card is install ed.
• Bank number: The bank number, if used by your card. S ee your card documentation.
• Row number: The row number is either 1 to 8 or A to Z. See your ca rd documentation.
• Column number: Always two digits. For columns gre ater than 99, use A, B, C and so on to
represent 10, 11, 12, …; the resulting sequence is: 98, 99, A0, A1, …, A8, A9, B0, B1, …
Matrix channel examples
Specifier Slot number Bank number Row number Column number
2-8 707B-900-01 Rev. C / July 2019
Models 707B and 708B
panel interface
Switching Matrix User's Manual Section 2: Using the front-
Operating a channel from the front panel
For the Model 707B, also see Selecting and closing channels using the crosspoint display (on page
2-12) to select a channel using the crosspoint display.
Hot switching can dry-weld reed relays, causing them to always be on. Hot switching is
recommended only when external protection is provided.
You can perform operations on a single channel from the front panel.
To select a channel:
1. If the instrument is being controlled remotely, press EXIT to allow control from the front panel.
Turn the navigation wheel
To:
Close a channel without affecting any other channels: Select CLOSE.
Open the channel: Press OPEN.
Close a channel and open any other closed channels on the instrument: Select CHAN
lect EXCLOSE. Press ENTER to close the selected channels.
se
Close a channel and open any other closed channels on the slot that contains the select
c
hannel: Select CHAN, and then select EXSLOTCLOSE. Press ENTER to close the select
c
hannels.
Once a channel is selected, it is the selected channel for any subsequent front-panel operations.
until the channel specifier is displayed on the front panel.
and
ed
ed
707B-900-01 Rev. C / July 2019 2-9
Section
User's Manual
2: Using the front-panel interface Models 707B and 708B Switching Mat r i x
Exercise: Select and close slot 1, row C, column 7 crosspoint
To select and close the crosspoint on slot 1, at row C and column 7:
1. To change the present row, press the navigation wheel. The first two digits of the four-digit
channel specifier flash, indicating edit mode.
2. Turn the navigation wheel
3. Press the navigation wheel
to change the digit to 1C.
. This accepts the row selection and selects edit mode for the
column. The last two digits of the channel specifier flash, i ndi cati ng edit mode.
4. Turn the navigation wheel
5. Press the navigation wheel
to change the digits to 07.
or ENTER to accept the channel, exit edit mode, and return to the
main display.
6. To:
Open the channel: Press OPEN.
Close a channel without affecting any other channels: Select CLOSE.
Close a channel and open any other closed channels on the instrument: Select CHAN and
select EXCLOSE. Press ENTER to close the selected channels.
Close a channel and open any other closed channels on the slot that contains the selected
channel: Select CHAN, and then select EXSLOTCLOSE. Press ENTER to close the selected
channels.
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panel interface
08B Switching Matrix User's Manual Section 2: Using the front-
Crosspoint display (Model 707B only)
The crosspoint display on the front panel of the Model 707B displays information about the slots that
contain cards and the open and closed state of the channels for one card slot at a time. If there are
no cards in the instrument's slots, the crosspoint display shows "No card in unit."
Figure 6: Model 707B crosspoint display
The crosspoint display has a list of slots on the right. To the left of the slot list are lights that show you
an overview of the cards in the instrument's slot s.
Figure 7: Model 707B slot indicators
In the figure above, there are cards in five slots, no card in slot 5, and the channels for the card in
slot 3 are displayed on the crosspoint display. Also, at l east one channel is closed on the card in
slot 2.
707B-900-01 Rev. C / July 2019 2-11
Section
User's Manual
2: Using the front-panel interface Models 707B and 708B Switching Mat r i x
Selecting and closing channels using the crosspoint display
From the front panel, you can change the display to show another card slot, choose a specific
channel, and open and close channels. For the Model 707B, the crosspoint display shows you the
status of the channels for one card at a time.
To display a different slot:
Turn the navigation wheel
to the right to go to the next slot, or to the left to go to t he prev i ous slot.
Exercise: Select crosspoint on slot 2, row C, column 3
To select the crosspoint that is on slot 2, at row C and column 3
1. When you are displaying slot 2, press the navigation wheel
displayed.
2. Turn the navigation wheel
3. Press the navigation wheel
to go to row 2C.
to select the row. The red lights for each crosspoint in t he row are
on, as shown in the following figure.
Figure 8: One row selected
. The red lights for that slot are
On the Model 707B, if you scroll past the last row of any slot, you go to the next slot.
4. After choosing the row, press the navigation wheel . A column of red lights is displayed.
5. Turn the navigation wheel
to go to column 03. Note that scrolling through the columns will not
scroll through slots as scrolling through row s does.
6. Press the navigation wheel
or ENTER to select the column and row. This channel is now
displayed on the bottom display as 2C+03.
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Switching Matrix User's Manual Section 2: Using the front-
7. To:
Open the channel: Press OPEN.
Close a channel without affecting any other channels: Select CLOSE.
Close a channel and open any other closed channels on the instrument: Select CHAN and
select EXCLOSE. Press ENTER to close the selected channels.
Close a channel and open any other closed channels on the slot that contains the selected
channel: Select CHAN, and then select EXSLOTCLOSE. Press ENTER to close the selected
channels.
Viewing the close or open status of a channel
Closed channels are shown separated by commas after the CLS: characters on the display of the
instrument. If no channels are closed, <none> is displayed here. If the list of closed channels extends
past one screen, ... is displayed at the end of the line. Press DISPLAY to display the full list of
closed channels. Use the navigation wheel
DISPLAY twice to return to the main display.
to scroll through the list. After viewing the l ist , press
Channel patterns
You can use channel patterns as a convenient way t o ref er to a group of switching channels with a
single alphanumeric name. When you perform close or open operations on a channel pattern, only
the channels that are in the channel pattern a re af fected.
There is no speed difference when performing close and open operations on channel patterns
compared to performing the same operations on individual channels or a list of channels.
Create a channel pattern
When you create a channel pattern, make sure to:
• Include all the channels that are needed for that cha nnel pattern.
Figure 9: Multiple closed channels
707B-900-01 Rev. C / July 2019 2-13
• Check that channels in the pattern are correct.
• Check that channels in the pattern create the corre ct path connection.
• Make sure that channels that you want to include in the pattern are not set to forbidden to close.
Section
User's Manual
2: Using the front-panel interface Models 707B and 708B Switching Matrix
When naming the channel pattern, be aware:
• The first character of the name must be alphabetic (upper or lower case)
• Names are case sensitive
• Pattern names must be different than row, colu mn, and channel labels
Exercise: Create channel pattern "TEST01" from closed channels
To create channel pattern "TEST01" from channels currently closed:
1. Close the channels you want to include in the channel pattern. For this example, close channels
1A01, 1B02, and 1C03. Refer to Operating a channel from the front panel (on page 2-9
instructions on how to close individual channels.
2. Press the PATT key.
3. From this menu, select the CREATE menu item.
4. From this menu, select the SNAPSHOT menu item.
5. At the prompt, enter a pattern name using the nav i gation wheel
name TEST01. Use the navigation wheel
to select each character of the name.
6. Press the ENTER key to apply the selection.
7. Press the EXIT key to leave the menu.
Refer to "Channel patterns" in the Models 707B and 708B Reference Manual for more details.
. For this example, enter the
) for
Performing close and open operations on channel patterns
Careless channel pattern operation could create an electric shock hazard that could result in
severe injury or death. Improper operation can also cause damage to the switching cards and
external circuitry. The control of multiple channels using channel patterns should be
restricted to experienced test engineers who recognize the dangers associated with multiple
channel closures.
You can close and open channel patterns the same way you do for individual channels.
When you request a close or open operation, the Model 707B or 708B verifies that the channels exist
for a pattern but does not verify that the switch path c onnection is correct. You must ensure the
requested operation is safe for a channel pattern and that a good connection will result for your
application with the channel pattern.
2-14 707B-900-01 Rev. C / July 2019
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panel interface
Switching Matrix User's Manual Section 2: Using the front-
Exercise: Close channel pattern "TEST01" from the front panel
To close channel pattern "TEST01" from the front panel:
1. Press the PATT key to display a channel pattern.
2. Use the navigation wheel
to select TEST01, the channel pattern you want to close.
Model 707B only: Note that when you select a pattern, on the cross point display, the lights for
the channels included in the pattern are dimly li t.
3. Perform any of the following actions:
Open the channels in the channel pattern: Press OPEN.
Close the channels in the channel pattern without affecting any other channels: Press
CLOSE.
Close the channels in the channel pattern and open any other closed channels on the
instrument: Select PATT and select EXCLOSE. Press ENTER to open or close the channels.
Close the channels in the channel pattern and open any other closed channels on the slot:
Press PATT and select EXSLOTCLOSE. Press ENTER to open or close the channels.
Set up row, column, and channel labels
You can define labels for rows, columns, and chan nels. Using labels is a more descriptive way to
refer to switching paths than the default channel identifiers.
Labels must be unique; they cannot have the same as t he name of another row, column, channel, or
channel pattern. Labels cannot contain spaces, and they do not persist through a power cycle.
Channel labels can be up to 19 characters. Row and c ol um ns labels can be up to 8 characters. On
the crosspoint display, the first four characters of the label are displayed. On the bottom display, the
full label is displayed.
You can only set labels for channels that are inst al led in the instrument.
707B-900-01 Rev. C / July 2019 2-15
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