Tektronix VX4223 User manual

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User Manual
VX4223
Universal CounterITimer
Please check for change informationatthe rear
of this manual.
First Edition: September 1989
1,ast Revised: March 18, 1994
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Copyright t2 Tektronix, Inc. 1989. 1994. All rights reserved.
Tektronix products are covered by
U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Printed
in the U.S.A.
Tektronix, Inc., P.O. Box
1000, Wilsonville. OR 97070-1000
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
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WARRANTY
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three
(3) years from the date of shipment. If any such product proves defective during this warranty period, Tektronix.
at its option, either will repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product.
In order to obtain service under this warranty. Customer must notify Tektronix of the defect before the expiration
of the warranty period and make suitable arrangements for the performance ol' service. Customer shall be
responsible for packaging and shipping the defective product to the service center designated by Tektronix. with
shipping charges prepaid. Tektronix shall pay for the return
of the product to Customer if the shipment is to a
location within the country in which the Tektronix service center is located. Customer shall be responsible for
paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage
resulting from attempts by personnel other than Tektronix representatives to install. repair or service the product:
b) to repair damage resulting from improper use or connection to incompatible equipment; or c) to service a
product that has been modified or integrated with other products when the effect of such modification or
integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF
ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS
DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A
PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE
PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR
BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL
NOT BE LIABLE FOR ANY
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF
WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OFTHE POSSIBILITY OF
SUCH DAMAGES.
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Table of Contents
Preface
.................
Purpose of this Document
................
Organization of this Manual
..................
NotationalConventions
Related Publications
....................
Section 1 . General Information
.............................
Introduction 1-1
...........................
Description 1-1
....................
Measurement Capabilities 1-1
Additional Capabilit~es
................... 1-2
.....................
Input Signal Conditming 1-2
.............................
Options 1-2
............................
Specifications 1-3
Definitions ......................... 1-5
Trigger Error ..................... 1-5
Trigger Level Timing Error
............... 1-5
Trigger Level Setting Error ............... 1-5
Different~alChannel Delay Error ............ 1-5
Time Base Error
................... 1-5
Resolutionand Gate Time
............... 1-6
GateOut
....................... 1-6
Miscellaneous
..................... 1-6
Section 2 . Preparation for installation
Interrupt Level and Logical Address Setting
...
Interrupt Level ..............
LogicalAddress .............
................... Power-Up
Configuringthe Backplane Jumpers
.......
Section 3 . installation
Introduction .............
Power-Up Default State .......
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REV JUNE 1992
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Table of Contents
Section 4 - Instrument Commands
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gate Time and Resolution Control . . . . . . . . . . . . . . . .
Special Functions . . . . . . . . . . . . . . . . . . . . . . . .
Output Message Format . . . . . . . . . . . . . . . . . . . . .
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . .
Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 5 - Maintenance
PerformanceVerification Procedures . . . e
RequiredTest Equipment . . . . . .
Diagnostic Special Functions . . . . . . . . . . . . . . . . . . .
lnput A Sensitivity Test . . . . . . . . . . . . . . . . . . . . .
lnput B Sensit~vityTest . . . . . . . . . . . . . . . . . . . . .
lnput C Sensitivity Test . . . . . . . . . . . . . . . . . . . . .
Time Interval A-B Test . . . . . . . . . . . . . . . . . . . . . .
Totalize A by B Test . . . . . . . . . . . . . . . . . . . . . . .
Ratio AIB Test . . . . . . . . . . . . . . . . . . . . . . . . .
Ratio CIB Test . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger Level Accuracy Test . . . . . . . . . . . . . . . . . . .
FunctionalChecks . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 1
lnput A Filter Check . . . . . . . . . . . . . . . . . . . . . . . 5-11
lnput A Attenuator Check
. . . . . . . . . . . . . . . . . . . . 5-11
lnput
B Attenuator Check . . . . . . . . . . . . . . . . . . . . 5-1 2
Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . 5-1 3
Reassembly Instructions . . . . . . . . . . . . . . . . . . . . . 5-1 3
VX4223 lnput Amplifier Setup Procedure . . . . . . . . . . . . . . . . 5-13
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
lnput
A Amplifier Setup Procedure . . . . . . . . . . . . . . . . 5-14
lnput
B Amplifier Setup Procedure . . . . . . . . . . . . . . . . 5-15
lnput
C Amplifier Setup Procedure . . . . . . . . . . . . . . . . 5-16
VX4223 PerformanceVerificationTest Record . . . . . . . . . . . . (5- 17)
Appendix A - VXlbus Glossary
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Table of Contents
List of illustrations
Figure
Table
Title Page
......................
VX4223 Universal Counter.Timer viii
............
Input A Low Frequency Sensitivity Test Configuration 5-3
............
Input A High Frequency Sensitivity Test Configuration
5-3
............
Input B Low Frequency Sens~tivityTest Configuration 5-4
............
Input B High Frequency Sensitivity Test Conf~guration 5-5
........................
Input C Test Configuration 5-6
....................
Time Interval A-B Test Configuration 5-7
.....................
Totalize A by B Test Configuration
5-8
.......................
Ratio A i B Test Configuration 5-8
.......................
Ratio C i B Test Conf~guration 5-9
..................
Input A Trigger Level Test Configuration 5-9
..................
Input B Trigger Level Test Configuration 5-10
.....................
Input A Filter Check Configuration 5-11
................
Input A XI0 Attenuator Check Configuration
5-11
................
Input B XI0 Attenuator Check Configuration 5-12
....................
Location of R10. R11. R12 and R15 5-14
Input A Amplifier Setup Configuration
................... 5-14
...................
Input B Amplifier Setup Configuration 5-15
........................
Input C Setup Conf~guration 5-16
List of Tables
Title Page
Environmental Specifications ....................... 1-3
ElectricalSpecifications
.......................... 1-3
Mechanical Specifications
......................... 1-3
Input Specifications
............................ 1-4
Trigger Specifications
........................... 1-5
Measurement Specifications
....................... 1-7
Bus Grant Jumper Straps
......................... 2-3
Interrupt Acknowledge Jumper Straps
................... 2-3
Measurement Mode Output String Headers
................. 4-3
Recalled Data Output String Headers ................... 4-4
Error Codes ............................... 4-5
Enablingthe Special Functions in Check Mode
............... 5-2
Input A Sensitivity Low Frequency Test
.................. 5-3
Input A Sensitivity High Frequency Performance Limits ........... 5-4
Input B Sensitivity Low Frequency PerformanceLimits ........... 5-4
Input B Sensitivity High Frequency Performance Limits ........... 5-5
Input C Sensitivity Performance Limits ................... 5-6
Time Interval
A-B Test Performance L~mits ................. 5-7
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Preface
Purpose of this Document
This manual providesthe informationnecessary to install, configure, and operate
the
VX4223 Universal Counternimer.
Organization of this Manual
This manual consists of the following sections and appendices:
Section
1. General Information - Providesabrief overview of the Counter,Timer
and briefiy describes standard and optional accessories. Specifications provide
the performance conditions of the instrument.
Section
2. Preparation for Installation - Provides the information that the
installer must consider when includingthe
VX4223 as a part of a system. Includes
installationand configuration.
Section
3. Installation - Provides the information required to operate the
VX4223 as a part of a larger system.
Section
4. instrumentCommands - Describesthe instrument-levelcommands
that control the
VX4223.
Section 5. Maintenance - Provides performance procedures and functional
checks to assure correct instrument operation.
Appendix
A. VXlbus Glossary - Providesa glossary of VXlbus terms.
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REV JUNE 1992 v
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Preface
Notational Conventions
This manual uses the following notationalconventions:
Regardingthe active state of TTL signals:
An asterisk (*) followingasignalmnemonic denotesthat thesignal is active
when in the low state (typically,
0 V).
A signal mnemonic without a following asterisk (3 denotes that the signal
is active when inthe high state (typically,
2.8 - 5 V)
Regardingthe base of a number:
Unless otherwise noted, all numbers are assumed to be decimal (base
10).
Related Publications
The following documents on related subjects may be useful in efficient use of the
Mainframe.
VXlbus System Specification, Versron 7.3, July 14, 1989
a
ANSIIIEEEStd 1014-1987, IEEE Standardfor a Versatile BackplaneBus: VME
bus
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Safety Summary
Operators Safety Summary
The general safety information in this summary is for both operating and servic~ngperson-
nel. Specific warnings and cautions are found throughout the manual where they apply,
and may not appear in this summary.
TERMS
Terms in This Manual
WARNING statements identify conditions
or practices that could result In personal
injury or loss of life.
CAUTION statements identify conditions
or practicesthat could result in damage to
the module or other property.
Terms as Marked on Module
DANGER indicates a personal injury haz-
ard immediately accessible as one reads
the marking.
CAUTION indicatesa personalinjury haz-
ard not immediately accessible as one
reads the markings, or a hazard
to prop-
erty, including the module itself.
SYMBOLS
Symbols
in This Manual
This symbol indicates where
applicable cautionary or other
information isto be found.
This symbol indicates where
special explanatory informa-
a
tion isincluded in the manual.
There is no caution or danger
associated with the informa-
tion.
Symbols as Marked on Module
DANGER High Voltage
Protective ground (earth)
terminal.
A ATTENTION refertomanual.
0
Refer to manual before using.
Power Source
This module is intended to operate in a
mainframe whose power source does not
apply morethan
250 volts rmsbetweenthe
supply conductors or between either sup-
ply conductor and ground.
A protective
ground connection through the grounding
conductor inthe power cord(s)isessential
for safe operation.
Grounding the Module
This module is grounded through the
grounding connector of the mainframe
power cord(s).To avoid electrical shock,
plug the mainframe power cord(s) into
a
properly wired receptacle beforeconnect-
ing
to the moduleconnectors. A protective
ground connection through the mainframe
is essential for safe operation.
Danger Arising From Loss of
Ground
Upon loss of the protective-ground con-
nection, all accessible conductive parts
can render an electric shock.
Use the Proper Fuse
To avoid fire hazard, use only fuses spec-
ifiedinthe modulepartslist.
A replacement
fuse must meet the type, voltage rating,
and current rating specifications required
for the fuse that it replaces.
Do Not Operate in Explosive
Atmosphere
To avoid explosion, do not operate the
module in an explosive atmosphere.
Do Not Remove Covers or Pan-
els
To avoid personal injury, the module cov-
ers should be removed only by qualified
service personnel. Do not operate the
modulewithout covers and panelsproperly
installed.
VX4223 Universal CounteriT~merUsers Manual
vii
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INPUT A
A
U INPUTS
0
0
DCT ARM INPUT
UNIVERSAL
COUNTER/
TIMER
VX4223 Universal CounterAimer
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Section 1
General Information
Introduction
Description
The VX4223 Universal Counterrrimer is a microprocessor controlled instrument
withhighresolutionmeasurementcapabilities.The
VX4223 is designed to beused
under the control of a Slot
0 Resource Manager and conforms to the VXlbus
System Specification, Version 1.3. July 14, 1989.
Measurement Capabilities
The VX4223 has the following measurement capabilities:
Frequency A - frequency measurement up to 160 MHz using input A
Frequency B - frequency measurement up to 100 MHz using input B
Period A - period measurement from 6.25 ns - 1700 s using input A
Period B - period measurement from 10 ns - 1700 s using input B
Time Interval - time interval measurements intwo modes:
Separate Mode - events at inputs A and B start and stop the measure-
ment, respectively. Measurement from
5 ns - 800,000 s.
Common Mode - events at input A bothstart and stop the measurement.
Measurement from
5 ns - 800,000 s.
Total A by B - counts the number of events ( up to 10") that occur at input
A between events at input B
Total B by A - up to lo1* events.
ManualTotalize - counts the number of events ( up to 10'~) betweendevice
dependent commands to open and close the counter gate
A
Ratio
- measures the ratio of the frequencies applied to inputs A and B
RiseIFall A - measuresthe rise or fall time (dependingon the slope selected)
of a
signal at input A
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7-7
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Section 7 - introduction
Pulse Width A - measures the interval between successive rising to fallmg
or falling
to risingedges (depending on the slope selected) of a signal at input
A. Measurement from 5 ns - 20 ms.
Phase A re1 B - measuresthe phase difference between signals at inputs A
and B
Additional Capabilities
Inaddition to the previously described measurement capabilities, the VX4223 has
the following features:
External Arming - An additional qualification of the trigger conditions of a
measurementis provided by input D, or by the VXI Trigger bus. Arming con-
ditions are selected by the use of special functions available in the alternate
command set.
ExternalFrequencyStandard Input - TheVX4223can belockedto anexternal
reference applied to this input. The selection of the reference frequency
is
under software control.
MathFunction - Whenthe mathfunction is active, the VX4223 returns values
(Result - X I Y
of the form
, where Result = a measured value, and the values
of
X and Y are constants entered by the user.
Averaging Mode - An additional digit of resolution is added to the VX4223
output
in this mode. The averaging id done over 100 measurements.
Check Mode - The Check mode allows the user to verify that the VX4223 is
operating correctly. The capabilities of the Check mode can be extended by
the use of special functions.
Special Functions - The measurement and diagnostic capabilities of the
VX4223 are extended by the special functions available inthe alternate com-
mand set.
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Section 1 - Introduction
-
lnput Signal Conditioning
Thefollowing signal conditioningcapabilitiesare availableto bothinput A and input
6, independently:
ac or dc coupling
1 MS2 or 50 S2 input impedances
XI or XI0 input attenuations
+ or - slope triggering conditions
Automatic or user-definedinput trigger level setting. (The use of auto-trigger
may cause the VX4223 to change the setting of the attenuation.)
A switchable low pass filter that reduces the bandwidth of input A to 50 KHz
(nominal)
Options
The following option is available for the VX4223:
Option 1 - lnput C. This option extends the frequency range of the VX4223
to 1.3
GHz. lnput C has a fixed impedance of 50 S1, and a bandwidth of 40
C
MHz - 1.3 GHz. This option also provides for a Ratio measurement.
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Section 1 - Specifications
Specifications
Table 1-1. Environmental
Characteristic
1 Performance Requirement
Table
1-2. Electrical
Temperature:
Operating
Non-operatinq
Characteristic 1 Performance Requirement
0 - 50" C
-40 - + 70" C
Table 13. Mechanical
Maximum Current Required:
+ 24 Vdc
+ 5 Vdc
-5.2 Vdc
Characteristic
Dimensions:
He~ght 261.62 rnm (1 0.3")
Width 30.18 mm (1.188")
200 mA
3.1 A
1.6 A
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Section 1 - Specifications
Table 1-4. lnput
Note
Inputs A andB areavailableas front panel BNC connectors.lnput
A can also receive a signal from any one of the internal SUMBUS
lines on the VXlbus Backplane.
VX4223 Universal CounterlTimer Users Manual
Characteristic
Input A Frequency Range
Input
B Frequency Range
Input Impedance
Input Attenuation
Sensitivity
Sinewave (XI
)
Pulse (XI)
Dynamic Range (XI)
Maximum lnput
50
S2
1 MSZ
Low Pass Filter
Crosstalk
lnput
C (Option 1):
Frequency Range
Sensitivity (sinewave)
Dynamic Range
Input Impedance
VSWR
Maximum lnput
Operating
Without damaqe
Performance Requirement
dc coupled: dc - 160 MHz
ac coupled: 10 Hz - 160 MHz
dc coupled: dc
- 100 MHz
ac coupled: 10 Hz - 100 MHz
1
MQ or 50 Q. selectable
XI or XI0, selectable
25 mV rms to 100
MHz
50 mV rrns to 160 MHz
75 mVoD,at 5ns pulse width
36 db to 50
MHz (75 mVpp - 5 Vpp)
30 db to 100
MHz (75 mVpp - 2.5 Vpp)
24 db to 160 MHz (150 mVDo - 2.5 VDD)
5 V rms
XI: 260 V (dc
+ ac rms), dc - 2 KHz,
decreasing to 5 V rrns at 100 KHz and
above
X10: 260 V (dc
+ ac rrns), dc - 20 KHz,
decreasing to 50 V rrns at 100 KHz and
above
50
KHz (nominal),Input A only
<-36 db between channels, measured at
100
MHz with 50 S2 input impedance
40
MHz - 1.3 GHz
25 mV rms to 1 GHz
50 mV rrns to 1.3 GHz
40 db to 1 GHz
50 S1 (nominal)
<2:1 at 1 GHz
1 V rms
7 V rms
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Section 1 - Specifications
Table 1-5. Trigger
Definitions
Characteristic
Trigger Level Range
Trigger Level Accuracy
Auto-trigqer Minimum Amplitude
Auto-trigger LevelAccuracy
Auto-trigger Frequency Range
The following definitions apply to terms used in
Table 1-6:
Performance Requirement
XI: f 5.1 V in 20 mV steps (automatic or
manual selection)
XI
0: 151 V in 200 mV steps (automatic
or manual selection)
XI : +_ 1 Oio of trigger level f 30 mV
XI 0: k 1% of triqqer level i 300 rnV
150 ~VD-D
+5 through -4 V: k30 mV relative to
displayed reading
-4 through -5.1 V: k 100 mv relat~veto
displayed reading
dc.
50 Hz - 100 MHz (typically to 160
MHz)
Trigger Error
2
SQR (el + en 1
Input slew rate at trlgger point
where:
el
= input amplifier rms noise (typically 150 pV, 450 pV maximum in a 160 MHz
bandwidth)
en = input signal rms noise in a 160 MHz bandwidth
Trigger Level Timing Error
'12 Hysteresis Band Trigger Level Accuracy
+-
Input Slew Rate at START Trigger Pomt
+ Input Slew Rate st STOP Trigger Point
Where:
Hysteresis Band is nominally 25 mV
Trigger Level Setting Error
Tngger Level Accuracy Trigger Level Accuracy
' Input Slew Rate at START Trigger Point
+ lnput Slew Rate at STOP Tngger Point
Differential Channel Delay Error
The difference in propagation times between signals applied to input A and B.
Time Base Error
The fractional deviation of the time base frequency from 10 MHz due to aging,
temperature, voltage variations, etc.; determinedbythe referencefrequency used
bythe
VX4223 inthe VXI Mainframe.The default referencefrequency isthe VXlbus
CLKlO signal.
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section 1 - Specifications
Resolution and Gate Time
Gate time is relatedto the resolutionselected in the frequency, period, ratio, and
check functions as follows:
roviding
a 10% overrange. This precludes unnecessaryshifting of digits.
'Measurements of frequency. period, ratio, and check are averaged when
these qate times are set.
Resolution (number of selected digits) in Frequency,
Period, Ratio,and checka
9 = overflow
9
8
7
6
5b
4
3b
Gate time is also programmablein increments of 25.6 ps - 99.999 s. The default
state is 100 ms Gate Time and
8 digits of resolution.Note that the Gate Time can
be extended by:
Gate Time
10 s
1
S
100 ms
10 ms
1 ms
1 ms
1 ms
1 ms
A
r
one period of the input signal on Frequency B and Ratio -.
B
a~hemost significant digit is permittedto exceed the resolution by 1 digit,
two periodsof the input signal on Frequency A and Period A.
Whensettingtheresolutionby programmingthe number of digits, usethe following
formula to determinethe value of the Least Significant Digit
(LSD):
LSD = F x
Where:
F = Frequency
D
= Number of digits roundedup to the next decade.
Gate Out
A TTL compatible signal coincident with the measurement gate is accessible to
any one of the TTLTRG bus lines.
The signal is low when the gate is open.
Miscellaneous
The resolutionof phase and totalize is determined by the input signal.
Time interval, riselfall time, and pulse width measurements have the resolution
determined by both the input signal and the resolution set.
Resolution is programmable from
3 - 9 digits, but the minimum LSD that the
counter will achieve is 1 ns, regardless of programmed gate time or resolution in
time interval mode.
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