Agilent Technologies 54753A User manual

Agilent 54753A and 54754A
TDR Plug-in Modules
Programmer’s Quick Reference

ii
Notices
© Agilent Technologies, Inc. 2000-2004
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international copyright lays.
Manual Part Number
54754-90013
Edition
July 2004
Printed in Malaysia
Agilent Technologies, Inc.
Digital Signal Analysis Division
1400 Fountaingrove Parkway
Santa Rosa, CA 95403, USA
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Safety Notices
CAUTION
Caution denotes a hazard. It calls attention
to a procedure which, if not correctly per-
formed or adhered to, could result in
damage to or destruction of the product.
Do not proceed beyond a caution sign
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injury or loss of life. Do not proceed
beyond a warning sign until the indicated
conditions are fully understood and met.

iii
Introduction
Introduction
54750A/83480A
Mainframes
For controlling 54753A and 54754A TDR plug-in modules that are installed in
a 54750A or 83480A mainframes, refer to the following books:
• This manual, the 54753A and 54754A TDR Plug-in Modules Programmer’s
Quick Reference
•54753A and 54754A Programmer’s Guide for detailed information.
•54750A Oscilloscope and 83480A Analyzer Programmer’s Guide for infor-
mation about programming the oscilloscope.
•54753A and 54754A User’s Guide for general information about the opera-
tion of the TDR plug-in module.
86100-Series
Mainframes
For controlling 54753A and 54754A TDR plug-in modules that are installed in
an 86100-series mainframe, refer to the following books:
• 86100-series programmer’s guide.
• 86100-series online help.
Notational
Conventions
computer type. All characters appearing in computer type are key
words and must be entered exactly as shown.
CAPITAL LETTERS. Capital letters indicate the short form of a command.
The actual command is not case sensitive and can be entered in upper or
lower case.
<>. Angular brackets enclose words or characters that symbolize a program
code parameter or an GPIB command.
::= "is defined as." For example, <A> ::= <B> indicates that <A> can be
replaced by <B> in any statement containing <A>.
| "or." Indicates a choice of one element from a list. For example, <A> | <B>
indicates <A> or <B> but not both.
... An ellipsis (trailing dots) indicate that the preceding element may be
repeated one or more times.

iv
Introduction
[ ] Square brackets indicate that the enclosed items are optional.
{ } When several items are enclosed by braces, one, and only one of these
elements may be selected.
Definitions d ::= A single ASCII numeric character, 0-9.
n ::= A single ASCII non-zero, numeric character, 1-9.
<NL> ::= Newline or Linefeed (ASCII decimal 10).
<sp> ::= space character.
<white_space> ::= space(s) and tabs.

Contents
Root Level Commands 4
Acquire Commands 7
Calibrate Commands 8
C annel Commands 9
Disk Commands 11
Display Commands 12
Function Commands 13
Histogram Commands 19
Limit Test Commands 20
Marker Commands 21
Mask Test Commands 23
Measure Commands 25
TDR Commands 37
Waveform Commands 41
Waveform Memory Commands 42
3

Root Level Commands
Command :BLANk {CHANnel<number> | WMEMory<number> |
FUNCtion <number> | FFT | RESPonse<number> |
HISTogram | PMEMory1}
Turns off an active c annel, function, waveform memory, pixel memory, FFT,
istogram, or TDR response. T e VIEW command turns t em on.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1 or 2. For waveform
memories (WMEMory): 1, 2, 3, or 4. For pixel memories (PMEMory): 1. For
TDR response: 1, 2, 3, or 4.
Command :COMMents {PLUGin<number>, <comments>}
Sets t e comments field for t e plugin. T is field is used to describe options
included in t e plugin, or for user commands about t e plugin.
<number> Represents t e plugin slot numbered 1 t roug 4.
<comments> Represents t e unquoted string.
4

Command :DIGitize [<waveform_name>][,<waveform_name>]
Invokes a special mode of data acquisition t at is more efficient t an using
t e RUN command. T is command initializes t e selected c annels,
functions, responses, or FFT to “unacquired,” t en acquires t em according
to t e current instrument settings. W en all signals are completely acquired,
t e instrument is stopped.
<waveform_name> {CHANnel<number> | FUNCtion<number> | FFT |
RESPonse<number>}
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1 or 2. For responses:
1, 2, 3, or 4.
Command :MENU {APPLication | CHANnel<number> | ACQuire |
TIMebase | TRIGger | DISK | DISPlay | MARker |
MEASure | MATH | WAVeform | SETup | PRINt |
HELP | UTILity | FFT | LTESt | HISTogram |
MTESt | MEYE | TDR<number> | MTDR<number>}
<number> For c annels, indicates t e slot (1 t roug 4) in w ic t e c annel resides,
followed by an optional A or B identifying w ic of two possible c annels in
t e slot is being referenced.
For TDR, controls t e TDR/TDT menus for c annels 2 and 4.
For MTDR, controls t e TDR/TDT menus for c annels 2 and 4.
Root Level Commands
5

Command :STORe:WAVEform {CHANnel<number> |
FUNCtion<number> | WMEMory<number> | HISTogram |
FFT | RESPonse<number>},{WMEMory<number>}
Copies a c annel, function, stored waveform, istogram, TDR response, or
FFT to a waveform memory. T e first parameters specifies t e source of t e
copy and can be any c annel, function, waveform memory, istogram, TDR
response, or t e FFT. T e second parameter is t e destination of t e copy,
and can be any waveform memory.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1 or 2. For waveform
memories (WMEMory): 1, 2, 3, or 4. For responses: 1, 2, 3, or 4.
Command :VIEW {CHANnel<number> | WMEMory<number> |
FUNCtion<number> | FFT | RESPonse<number> |
HISTogram | PMEMory1}
Turns on a c annel, function, pixel memory, waveform memory, TDR
response, istogram, or FFT. Use t e BLANk command to turn t ese off.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1 or 2. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4. For
pixel memories (PMEMory): 1.
Root Level Commands
6

cquire Commands
Command :ACQuire:BEST[?] {THRuput | FLATness}
W en averaging is enabled wit ACQuire:AVERage, t e FLATness option
improves t e step flatness by using a signal processing algorit m wit in t e
instrument. You s ould use t is option w en performing TDR measurements
or w en step flatness is important. T e THRuput option improves t e
instrument’s t roug put and s ould be used w enever best flatness is not
required.
7

Calibrate Commands
Command :CALibrate:SAMPlers[?] {DISable | ENABle}
Enables or disables t e samplers in t e plug-in.
8

Channel Commands
Command :CHANnel<number>:OFFSet[?] <offset_value>
For TDR and TDT applications, you may c ange t e offset to magnify offset
in some circumstances. T is command is used to set t e magnify offset as
well as t e offset.
<number> An integer, 1-4, indicating t e slot in w ic t e c annel resides.
<offset_value> Offset value at center screen; can be volts, amperes, or ot er units.
Command :CHANnel<number>:RANGe[?] <range_value>
For TDR and TDT applications, you may c ange t e range to magnify range
in some circumstances. T is command is used to set t e magnify range as
well as t e range.
<number> An integer, 1-4, indicating t e slot in w ic t e c annel resides.
<range_value> Full-scale voltage of t e specified c annel number.
Command :CHANnel<number>:SCALe[?] <scale_value>
For TDR and TDT applications, you may c ange t e scale to magnify scale in
some circumstances. T is command is used to set t e magnify scale as well
as t e scale.
<number> An integer, 1-4, indicating t e slot in w ic t e c annel resides.
<scale_value> Vertical scale of t e c annel in units per division.
9

Command :CHANnel<number>:TDRSkew <percent> [%]
T is command sets t e TDR skew for t e given c annel. T e TDR skew
control moves t e TDR step relative to t e trigger position. T e control may
be set from -100 to 100 percent of t e allowable range. T is command is only
applicable to TDR c annels.
<number> An integer, 1 t roug 4, indicating t e slot in w ic t e c annel resides,
followed by an optional A or B identifying w ic of two possible c annels in
t e slot is being referenced.
<percent> A number between -100 and 100, used to set t e step position.
Command :CHANnel<number>:UNITs[?] {VOLT | AMPere | WATT |
UNKNown | OHM | REFLect | GAIN}
For TDR and TDT applications, you can select t e units OHM, REFLect, and
GAIN. OHM and REFLect may be selected for TDR c annels, w ile GAIN
may be selected for TDT c annels. You must perform a normalization and a
reference plane calibration to select t ese units.
<number> An integer, 1-4, indicating t e slot in w ic t e c annel resides.
Channel Commands
10

Disk Commands
Command :DISK:LOAD "<filename>", <source>
Loads a setup, waveform, database, mask, TDR/TDT calibration, or pixel
memory from t e disk. T e filename does not include a suffix. T e suffix
supplied by t e instrument depends on t e source and file format specified.
T e TDRTDT option is a file type c oice used to load TDR/TDT calibration
values into t e instrument.
<source> {DATabase | MASK | PMEMory 1 | SETup |
WMEMory<number> | TDRTDT}
<filename> Is an MS-DOS compatible file name up to 8 c aracters long.
<number> Represents waveforms 1, 2, 3, or 4.
Command :DISK:STORe <source>, "<filename>"[,<format>]
Stores a setup, waveform, database, mask, TDR response, TDR/TDT
calibration, or pixel memory to t e disk. T e filename does not include a
suffix. T e suffix is supplied by t e instrument depending on t e source and
file format specified. T e database may only be saved in internal format.
<source> {DATabase | MASK | PMEMory 1 | SETup |
WMEMory<number> | TDRTDT}
<filename> Is an MS-DOS compatible file name up to 8 c aracters long.
<number> Represents waveforms 1, 2, 3, or 4.
<format> {TEXT [,YVALues | VERBose] | INTernal}
11

Display Commands
Command :DISPlay:ASSign[?] {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | FFT},{UPPer | LOWer}
Assigns t e specified c annel, waveform, function, TDR response, or FFT to
a particular portion of t e waveform area on t e screen. T is command as
no effect w en t e graticule format is single.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1 or 2. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
12

Function Commands
Command :FUNCtion{1 | 2}:ADD <source>[,<source>]
Defines a function t at takes t e algebraic sum of two defined operands.
<source> {CHANnel<number> | FUNCtion<number> |
RESPonse<number> | WMEMory<number> |
<float_value>}
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:BWLimit {{CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number>}, <bandwidth>}
Provides a bandwidt limit filter function. You can use t is function on
waveforms to limit t e bandwidt of t e signal. In TDR or TDT applications
w ere t e accuracy of normalization is not required, you can use t is to
simulate a bandlimited signal t roug a device under test.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1 or 2. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<bandwidth> Real number indicating frequency limit for t e specified function.
13

Command :FUNCtion{1 | 2}:DIFFerentiate {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Computes t e discrete derivative of t e defined operand’s waveform.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:DIVide <source>[,<source>]
Defines a function t at divides t e first operand by t e second operand.
<source> {CHANnel<number> | FUNCtion<number> |
RESPonse<number> | WMEMory<number> |
<float_value>}
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:FFTMagnitude {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Defines a function t at computes t e FFT magnitude.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Function Commands
14

Command :FUNCtion{1 | 2}:INTegrate {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Defines a function t at computes t e integral of t e defined operand’s
waveform.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:INVert {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Defines a function t at inverts t e defined operand’s waveform by
multiplying by -1.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:MAGNify {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Defines a function t at is a copy of t e operand. T e magnify function is a
software magnify. No ardware settings are altered as a result of using t is
function. It is useful for scaling c annels, anot er function, TDR/TDT
responses and memories wit t e RANGE and OFFSET commands in t is
subsystem.
Magnify performs t e same operation as t e "ONLY" operator, and is t e
preferred operator of t e two. "ONLY" is included in t is instrument for
compatibility wit previous instruments.
Function Commands
15

<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:MAXimum {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Defines a function t at computes t e maximum value of t e operand
waveform in eac time bucket.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:MINimum {CHANnel<number> |
FUNCtion<number> | RESPonse<number> |
WMEMory<number> | <float_value>}
Defines a function t at computes t e minimum of eac time bucket for t e
defined operand’s waveform.
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Function Commands
16

Command :FUNCtion{1 | 2}:MULTiply <source>[,<source>]
Defines a function t at algebraically multiplies t e first operand by t e
second operand.
<source> {CHANnel<number> | FUNCtion<number> |
RESPonse<number> | WMEMory<number> |
<float_value>}
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Command :FUNCtion{1 | 2}:SUBTract <source>[,<source>]
Defines a function t at algebraically subtracts t e second operand from t e
first operand.
<source> {CHANnel<number> | FUNCtion<number> |
RESPonse<number> | WMEMory<number> |
<float_value>}
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Function Commands
17

Command :FUNCtion{1 | 2}:VERSus <source>[,<source>]
Defines a function for an X-versus-Y display. T e first operand defines t e
Y axis and t e second defines t e X axis. T e Y-axis range and offset are
initially equal to t at of t e first operand and can be adjusted wit t e
RANGE and OFFSET commands.
<source> {CHANnel<number> | FUNCtion<number> |
RESPonse<number> | WMEMory<number> |
<float_value>}
<number> For c annels: an integer, 1 t roug 4, indicating t e slot in w ic t e c annel
resides, followed by an optional A or B identifying w ic of two possible
c annels in t e slot is being referenced. For functions: 1. For waveform
memories (WMEMory): 1, 2, 3, or 4. For TDR responses: 1, 2, 3, or 4.
<float_value> A real number.
Function Commands
18