Agilent 16517A Programmers Guide

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Programmer’s Guide

Publication number 16517-97007 February, 2000

For Safety information, Warranties, and Regulatory information, see the pages behind the index



Agilent Technologies 16517A/18A 4-GSa/s Timing and 1-GSa/s Synchronous State Logic Analyzer

In This Book

This guide, combined with the

Technologies 16500B/16501A Programmer’s Guide

the information needed to program the Agilent Technologies 16517A/18A logic analyzer module. Each module has its own reference to supplement the mainframe manual since not all mainframes will be configured with the same modules.

This guide is organized in three parts. Part 1 consists of chapter 1 whichs contains general information and instructions to help you get started.

Chapter 1 also contains:

Mainframe system commands that are

•

frequently used with the logic analyzer module

16517A/18A Logic Analyzer command

•

tree Alphabetic command-to-subsystem

•

Selecting the Module

Before you can program the logic analyzer, you must first "select" it. This directs your commands to the logic analyzer.

To select the module, use the system command numeric reference for the slot location of the logic analyzer (1 through 10 refers to slot A through J respectively). For example, if the logic analyzer is in slot E, then the command:

:SELect 5

would select this module. For more information on the select command, refer to the Agilent Technologies 16500B/16501A Programmer’s Guide.

:SELect

followed by the

Programming the Logic Analyzer

A typical logic analyzer program will do the following:

select the appropriate module

•

specify the analyzer type

•

assign pods

•

assign labels

•

set pod thresholds

•

specify a trigger condition

•

set up the display

•

specify acquisition type

•

start acquiring data

•

1–3

Example

Programming the Agilent Technologies 16517A/18A

Programming the Logic Analyzer

The following example program sets up the logic analyzer to make a simple timing analyzer measurement.

10 OUTPUT XXX;":SELECT 3" 20 OUTPUT XXX;":FORMAT:TYPE WIDETIMING" 30 OUTPUT XXX;":FORMAT:LABEL ’COUNT’,POS,0,255" 40 OUTPUT XXX;":TRIGGER:PATTERN ’patt1’, ’COUNT’, ’#HFF’"

50 OUTPUT XXX;":WAVEFORM:RANGE 1E−6" 60 OUTPUT XXX;":MENU 3,2" 70 OUTPUT XXX;":WAVEFORM:INSERT ’COUNT’" 80 OUTPUT XXX;":RMODE SINGLE" 90 OUTPUT XXX;":START" 100 END

The three Xs (XXX) after the "OUTPUT" statements in the previous example refer to the device address required for programming over either GPIB or RS-232C. Refer to your controller manual and programming language reference manual for information on initializing the interface.

Program Comments

Line 10 selects the logic analyzer in slot C. Line 20 specifies the wide timing mode. Line 30 sets up the Format menu by assigning the label COUNT, and

assigning a polarity and channels to the label. Line 40 selects the trigger pattern for the timing analyzer.

Line 50 sets the range to 1 µs (10 times 100 ns/div). Line 60 changes the onscreen display to the Waveform menu. Line 70 inserts the label "COUNT" in the Waveform menu. Line 80 specifies the Single run mode. Line 90 starts data acquisition.

1–4

Programming the Agilent Technologies 16517A/18A

Mainframe Commands

These commands are part of the Agilent Technologies 16500B/16501A mainframe system and are mentioned here only for reference. For more information on these commands, refer to the Agilent Technologies 16500B/16501A Programmer’s Guide.

CARDcage? Query

The CARDcage query returns a string of integers which identifies the modules that are installed in the mainframe. The returned string is in two parts. The first five two-digit numbers identify the card type. The identification number for the 16517A logic analyzer is 04 and the identification number for the 16518A is 05. A "−1" in the first part of the string indicates no card is installed in the slot.

The five, single-digit numbers in the second part of the string indicate which slots have cards installed, which card has the controlling software for the module, and where the master card is located.

Example

4,5,-1,-1,32,1,1,0,0,5

A returned string of card (ID number 5) is loaded in slot B and an 16517A master card (ID number 4) is loaded in slot A. The next two slots (C and D) are empty (−1). Slot E contains a logic analyzer module (ID number 32).

The next group of numbers ( installed in slots A and B with the master card in slot B. The "0" indicates an empty slot, or the module software is not recognized or, is not loaded. The last digit (5) in this group indicates a single module card is loaded in slot E. Complete information for the CARDcage query is in the Agilent Technologies 16500B/16501A Programmer’s Guide.

4,5,-1,-1,32,1,1,0,0,5

2,2,0,0,5

means that an 16518A expansion

) indicate that a two-card module is

1–5

Programming the Agilent Technologies 16517A/18A

Mainframe Commands

MENU Command/query

The MENU command selects a new displayed menu. The first parameter (X) specifies the desired module. The optional, second parameter specifies the desired menu in the module. It defaults to 0 if it is not specified). The query returns the currently selected and displayed menu.

The menus for the 16517A/18A Logic Analyzer are: X,0 — Format X,1 — Trigger X,2 — Waveform X,3 — Listing X,4 — Not used X,5 — Compare X,6 — Not used X,7 — Skew Adjust

SELect Command/query

The SELect command selects which module or intermodule will have parser control. SELect 0 selects the intermodule, SELect 1 through 10 selects modules A through J respectively. Values −1 and −2 select software options 1 and 2. The SELect query returns the currently selected module.

STARt Command

The STARt command starts the specified module or intermodule. If the specified module is configured in an intermodule arming tree, STARt will start all modules configured for intermodule.

1–6

Programming the Agilent Technologies 16517A/18A

Mainframe Commands

STOP Command

The STOP command stops the specified module or intermodule. If the specified module is configured for intermodule, STOP will stop all modules configured in an intermodule arming tree.

STARt and STOP are Overlapped Commands. Overlapped Commands allow execution of subsequent commands while the logic analyzer operations initiated by the Overlapped Command are still in progress. For more information, see *OPC and *WAI commands in Chapter 5 of the Agilent Technologies 16500B/16501A Programmer’s Guide.

RMODe Command/query

The RMODe command specifies the run mode (single or repetitive) for a module or intermodule. If the selected module is configured in an intermodule arming tree, the intermodule run mode will be set by this command. The RMODe query returns the current setting.

SYSTem:ERRor? Query

The SYSTem:ERRor query returns the oldest error in the error queue. In order to return all the errors in the error queue, a simple FOR/NEXT loop can be written to query the queue until all errors are returned. Once all errors are returned, the query will return zeros.

SYSTem:PRINt Command/query

The SYSTem:PRINt command initiates a print of the screen or listing buffer over the current printer communication interface. The SYSTem:PRINt query sends the screen or listing buffer data over the current controller communication interface.

MMEMory Subsystem

The MMEMory Subsystem provides access to both internal disc drives for loading and storing configurations.

INTermodule Subsystem

The INTermodule Subsystem commands are used to specify intermodule arming between multiple modules.

1–7

Programming the Agilent Technologies 16517A/18A

Command Set Organization

The command set for the 16517A/18A is divided into subsystems. The subsystem commands are covered in their individual chapters starting with Chapter 2, "Format Menu Commands."

Each of these chapters contains a description of the subsystem, syntax diagrams, and the commands in alphabetical order. The commands are shown in long form and short form using upper and lowercase letters. For example, LABel indicates that the long form of the command is LABEL and the short form is LAB. Each of the commands contain a description of the command and its arguments, the command syntax, and a programming example.

Figure 1-1 on the following page shows the command tree for the 16517A/18A logic analyzer module. The (x) following the SELect command at the top of the tree represents the slot number in which the logic analyzer module is installed. The number may range from 1 through 10, representing slots A through J, respectively.

1–8

Figure 1-1

Programming the Agilent Technologies 16517A/18A

Command Set Organization

16517A/18A Command Tree

1–9

Programming the Agilent Technologies 16517A/18A

Command Set Organization

Table 1-1

Alphabetical Command-to-Subsystem Directory

Command Subsystem

ACCumulate WAVeform ACQuisition LIST, TRIGger,

WAVeform ARMedby TRIGger BASE SYMBol BRANch TRIGger CENter WAVeform CLEar COMPare, TRIGger CLOCk FORMat CLRPattern LIST, WAVeform CLRStat LIST, WAVeform CMASk COMPare COLumn LIST COPY COMPare DATA COMPare, LIST DELay WAVeform DURation TRIGger EDGE TRIGger FIND COMPare, TRIGger INSert WAVeform LABel FORMat, WAVeform LINE COMPare, LIST MENU COMPare MINus WAVeform MMODe LIST, WAVeform OCONdition LIST, WAVeform OPATtern LIST, WAVeform OSEarch LIST, WAVeform OSTate LIST OTAG LIST OTIMe LIST, WAVeform OVERlay LIST, WAVeform PATTern SYMBol, TRIGger PLUS WAVeform RANGe COMPare, SYMBol,

WAVeform

Command Subsystem

REMove FORMat, LIST,

SYMBol, WAVeform REName TRIGger RUNTil COMPare, LIST,

WAVeform SAMPclk LIST, TRIGger,

WAVeform SEQuence TRIGger SET COMPare SETUPHOLDA TRIGger SETUPHOLDB TRIGger SETUPHOLDC TRIGger SHOW LIST SIZE WAVeform SOFFset FORMat, LIST,

WAVeform SPERiod LIST, TRIGger,

WAVeform SYNC FORMat TAVerage LIST, WAVeform THReshold FORMat TIMER TRIGger TMAXimum LIST, WAVeform TMINimum LIST, WAVeform TPOSition LIST, TRIGger,

WAVeform TYPE FORMat VRUNs LIST, WAVeform WIDTh SYMBol XCONdition LIST, WAVeform XOTag LIST XOTime LIST, WAVeform XPATtern LIST, WAVeform XSEarch LIST, WAVeform XSTate LIST XTAG LIST XTIMe LIST, WAVeform

1–10

Programming the Agilent Technologies 16517A/18A

Module Status Reporting

Each module reports its status to the Module Event Status Register (MESR<N>), which in turn reports to the Combined Event Status Register (CESR) in the Agilent Technologies 16500B/16501A mainframe (see Agilent Technologies 16500B/16501A Programmer’s Guide chapter 6). The Module Event Status Register is enabled by the Module Event Status Enable Register (MESE<N>).

The MESE<N> and MESR<N> instructions are not used in conjunction with the SELect command, so they are not listed in the 16517A/18A’s command tree.

The following descriptions of the MESE<N> and MESR<N> instructions provide the module specific information needed to enable and interpret the contents of the registers.

Figure 1-2

Module Status Reporting

1–11

Programming the Agilent Technologies 16517A/18A

MESE<N>

Command

<enable_mask>

Example

Query

<N>

:MESE<N><enable_mask>

The MESE<N> command sets the Module Event Status Enable register bits. The MESE register contains a mask value for the bits to enable in the MESR register. A one in the MESE will enable the corresponding bit in the MESR, a zero will disable the bit.

The first parameter <N> specifies the module (1 through 10 refers to the module in slot A through J). The second parameter specifies the enable value in decimal.

Refer to table 1-2 for information about the Module Event Status register bits, bit weights, and what each bit masks for the module. Complete information for status reporting is in chapter 6 of the Agilent Technologies 16500B/16501A Programmer’s Guide.

{1|2|3|4|5|6|7|8|9|10}

integer from 0 to 255

OUTPUT XXX;": MESE5 1"

number of slot in which the module resides

:MESE<N>?

Returned Format

Example

The MESE query returns the current setting in decimal.

[:MESE<N>]<enable_mask><NL>

OUTPUT XXX;": MESE5?"

1–12

Programming the Agilent Technologies 16517A/18A

Table 1-2 Module Event Status Enable Register

Bit Weight Enables

7128 Not Used

6 84 Not Used

5 32 External clock period specification

4 16 Default skew values or memory error

3 8 Pattern searches failed

2 4 Trigger found

1 2 RNT-Run until satisified

0 1 MC-Measurement complete

The Module Event Status Enable Register contains a mask value for the bits to be enabled in the Module Event Status Register (MESR). A one in the MESE enables the corresponding bit in the MESR, and a zero disables the bit.

MESE<N>

1–13

Programming the Agilent Technologies 16517A/18A

MESR<N>

Query

Returned Format

Example

<N>

:MESR<N>?

The MESR<N> query returns the contents of the Module Event Status register in decimal. When you read the MESR, the value returned is the total bit weights of all bits that are set at the time the register is read. Reading the register clears the Module Event Status Register.

Table 1-3 shows each bit in the Module Event Status Register and their bit weights for this module.

The parameter 1 through 10 refers to the module in slot A through J respectively.

[MESR<N>]<status><NL>

{1|2|3|4|5|6|7|8|9|10}

integer from 0 to 255

OUTPUT XXX;": MESR5?"

number of slot in which the module resides

1–14

Table 1-3 Module Event Status Register

Bit Weight Condition

7128Not used

6 64 Not used

5 32 1 = External clock period out of specification

0 = External clock period met specification

4 16 1 = Default skew values are being used

or 1 = Memory error could not be corrected during redundancy test 0 = Skew values adjusted and no memory errors

3 8 1 = Search could not place X/O markers

0 = Search placed X/O markers

2 4 1 = Trigger found

0 = Trigger not found

1 2 1 = Run until condition satisified

0 = Run until condition not satisified

0 1 1 = Measurement complete

0 = Measurement did not complete

Programming the Agilent Technologies 16517A/18A

MESR<N>

1–15

1–16

Part 2

Format Menu Commands 2-1

Trigger Menu Commands 3-1

Waveform Menu Commands 4-1

Listing Menu Commands 5-1

Compare Menu Commands 6-1

Symbols Commands 7-1

Data and Setup Commands 8-1

Commands

Format Menu Commands

2–1

Introduction

The Format menu commands allow you access the FORmat subsystem which contains the following commands:

CLOCk

•

LABel

•

REMove

•

SOFFset

•

SYNC

•

THReshold

•

TYPE

•

2–2

Figure 2-1

Format Menu Commands

FORMat Subsystem Syntax Diagram

2–3

Format Menu Commands

FORMat

Table 2-1 FORMat Parameter Values

Parameter Values

<N>

name string of up to 6 alphanumeric characters polarity

pod_specification an integer from 0 to 255 or 0 to 15 (depending on type) for a pod

coarse_time a real number from –5 ns to +5 ns in increments of 200 ps fine_time

pod_skew_time

value

{1|2}

pairs

{POSitive|NEGative}

(pods are assigned from left to right)

an absolute real number that is within ±500 ps of

<coarse_time>

an absolute real number that is within ±500 ps of with a maximum of ±5 ns voltage (real number) −5.00 to +5.00 in 0.01 volt increments

FORMat

for one card or

with a maximum of ±5 ns

{1|2|3|4|5|6|7|8|10}

for up to five cards in

<fine_time>

Selector

Example

:FORMat

The FORMat selector is used as part of a compound header to access those settings normally found in the Format menu. It always follows the SELECT(n) command when you first access the module. It must precede any command you wish to send to the FORMat subsystem unless you send combined command messages (see "Combined Commands in the Same Subsystem" in Chapter 1 of the Agilent Technologies 16500B/16501A Programmer’s Guide).

OUTPUT XXX;": FORMAT:CLOCK?"

2–4

CLOCk (State mode only)

Format Menu Commands

CLOCk (State mode only)

Command

<clock_edge>

Example

Query

Returned Format

Example

:FORMa t:CLOCk <c lo ck_edge>

The CLOCk command allows you to specify the clock edge on which the state analyzer will be clocked. The external clock for the state analyzer is always on pod 1 of the master card. The clock options are

FALLing {RISing|FALLing}

OUTPUT XXX;":FORMAT:CLOCK FALLING"

(edge).

RISing

(edge) and

:FORMAT:CLOCK?

The CLOCk query returns the current clock specification.

[:FORM at :C LOCk] <clo ck _e dge><NL>

OUTPUT XXX;": FORMAT:CLOCK?"

2–5

Format Menu Commands

LABel

Command

:FORMa t:LABel <n am e>[[, <pol arity>] [, <ass ignment>]...]

The LABel command allows you to specify polarity and to assign channels to new or existing labels. If the specified label name does not match an existing label name, a new label will be created.

The order of the pod specification parameters is significant. The first

displayed in the Format menu. For example, sending pod specifications 255 and 15 assigns all eight channels of pod 2 and the lower four channels of pod

1. If multiple boards are installed, the pod specifications in this example will assign channels to pod 2 and pod 1 of top most board. Not including enough pod specifications results in the lower numbered pod being assigned a value of zero (all channels excluded). If you include more pod specifications than there are pods, the extra ones will be ignored. However, an error is reported anytime more pod specifications are listed than the number of available pods.

The polarity can be specified at any point after the label name. Because pods contain either 4 or 8 channels depending on the mode, the

<assignment> value for a pod must be between 0 and 15 (2

−

1) respectively. When specifying the pod assignment in binary (base 2),

each bit will correspond to a single channel. A "1" in a bit position means the associated channel in that pod is assigned to that pod and bit. A "0" in a bit position means the associated channel in that pod is excluded from the label. For example, assigning the front panel.

A label can not have a total of more than 32 channels assigned to it.

listed will match the left most pod in the Format menu. The after that assigns channels to the next pod to the right as

−

1) or 0 and 255

#B11110011

is equivalent to entering

****..**

from

<name>

string of up to 6 alphanumeric characters

{POSitive|NEGative}

For each pod, an integer from 0 to 255 in to 15 in

FASTTIMING

mode (pods are assigned from left to right)

2–6

STATE

WIDETIMING

mode or 0

Format Menu Commands

REMove

Examples

Query

Returned Format

<name>

Example

Command

OUTPUT XXX;":FORMAT:LABEL ’STAT’, POSITIVE, 255,15" OUTPUT XXX;":FORMAT:LABEL ’SIG 1’, ’#B00001111’, ’#B00000000’"

:FORMat:LABel? <name>

The LABel query returns the current specification for the selected (by name) label. If the label does not exist, nothing is returned. Numbers are always returned in decimal format.

[:FORM at :L ABel] <nam e> ,< polarity >[ , <assignm en t>]...<N L>

string of up to 6 alphanumeric characters

{POSitive|NEGative}

OUTPUT XXX;": FORMAT:LABEL? ’DATA’"

REMove

:FORMat:REMove {<name>|ALL}

Examples

<name>

The REMove command allows you to delete all labels or any one label specified by name.

string of up to 6 alphanumeric characters

OUTPUT XXX;": FORMAT:REMOVE ’A’" OUTPUT XXX;": FORMAT:REMOVE ALL"

2–7

Format Menu Commands

SOFFset (State Mode Only)

Command

<coarse_time>

<fine_time>

<pod_skew_

time1...10>

Examples

Query

Returned Format

:FORMa t:SOFFse t <c oarse_ti me>[,<fi ne_time> [, <pod_skew_time1>, ..., <pod_skew_time10>]]

The SOFFset command allows you to specify the offset between the external clock and the internal sample clock in the State mode. An error (–211, Legal command but settings conflict) results if the State mode is not selected.

a real number from –5 ns to +5 ns in increments of 200 ps

an absolute real number that is within ±500 ps of maximum of ±5 ns

OUTPUT XXX;":FORMat:SOFFSET 1.2E–9" OUTPUT XXX;":FORMat:SOFFSET 1.1E–9, 1.3E–9, 1.25E–9, 1.25E-9"

<coarse_time>

with a

:FORMat:SOFFset?

The SOFFset query returns the current setting for the clock offset. If the SOFFset setting is only set with value. If the setting is set with

<pod_skew_time>

by a time value for each pod.

[:FORMat:SOFFset] <coarse_time>[,<fine_time> [, <pod_skew_time1>, ..., <pod_skew_time10>]]<NL>

, the query returns

<coarse_time>

<coarse_time>, <fine_time>

, the query returns one time

, and

followed

Example

OUTPUT XXX;": FORMat:SOFFSET?"

2–8

SYNC

Format Menu Commands

SYNC

Query

Returned Format

Example

Command

:FORMat:SYNC?

The SYNC query instructs the 16517A/18A to synchronize the internal clock to the external clock. It then returns a 1 if the synchronization was successful (the external clock was valid) or a 0 if the synchronization was unsuccessful (the external clock was invalid).

[:FORMat:SYNC] {1|0}<NL>

OUTPUT XXX;": FORMAT:SYNC?"

THReshold

:FORMat:THReshold<N> {TTL|ECL|<value>}

The THReshold command allows you to set the voltage threshold for a given pod to ECL, TTL, or a specific voltage from −5.00 V to +5.00 V in 0.01 volt increments. The order of the pod number <N> is significant in multiple-card systems. Pod number 1 will set the threshold of pod 1 of the card in the lowest numbered slot in the mainframe while pod number 3 will set the threshold of pod 1 of the card in the next higher numbered slot.

Example

Query

<N>

<value>

TTL

ECL

an integer from 1 to 10 depending on number of cards. Pod number options

{1|2}

are

voltage (real number) −5.00 to +5.00 in increments of 0.01 volts

default value of +1.5 V

default value of −1.3 V

OUTPUT XXX;": FORMAT:THRESHOLD1 4.0"

for one card (two pods) or

{1|2|...|10}

for up to five cards in pairs.

:FORMat:THReshold<N>?

2–9

Returned Format

Format Menu Commands

TYPE

The THReshold query returns the current threshold for a given pod.

[:FORmat:THReshold<N>] <value><NL>

Example

Command

<analyzer_

Example

type>

OUTPUT XXX;": FORMAT:THRESHOLD2?"

TYPE

:FORM at:TYPE <analyzer_type >

The TYPE command allows you to specify the acquisition mode of the analyzer. The acquisition modes are

There is one important note about using the TYPE command instead of the front-panel interface. When you change the mode from FASTtiming to WIDetiming from the front panel, you have the option of specifying whether or not to restore bits 4 through 7 to their previous value. When you change the mode from FASTtiming to WIDetiming over the bus, bits 4 through 7 are always restored to their previous value.

{WIDetiming|FASTtiming|STATe}

OUTPUT XXX;": FORMAT:TYPE STATE"

STATe, WIDetiming

FASTtiming

Query

Returned Format

Example

:FORMat:TYPE?

The TYPE query returns the current type or mode (timing).

[:FORMat:TY PE] {WIDEtiming|FASTtiming|S TATe}<NL>

OUTPUT XXX;": FORMat:TYPE?"

2–10

Trigger Menu Commands

3–1

Introduction

The Trigger menu commands allow access to the TRIGer subsystem and contains the following commands:

ACQuisition

•

ARMedby

•

BRANch

•

CLEar

•

DURation

•

EDGE

•

FIND

•

PATTern

•

REName

•

SAMPclk

•

SEQuence

•

SETUPHOLDA

•

SETUPHOLDB

•

SETUPHOLDC

•

SPERiod

•

TIMER

•

TPOSition

•

Hint

TRIGger Subsystem Syntax Diagram

3–3

Figure 3-1 (continued)

Trigger Menu Commands

TRIGger Subsystem Syntax Diagram (continued)

3–4

Figure 3-1 (Continued)

Trigger Menu Commands

TRIGger Subsystem Syntax Diagram (continued)

3–5

Trigger Menu Commands

Table 3-1 TRIGger Parameter Values

Parameter Values

branch_qualifier occurrence number from 1 to 16777216

to_level_number integer from 1 to last level or TRIGger resource_name a string of 8 alphanumeric characters present_arg {PRESent|ABSent} dur_time a real number from 0 ns to 510 ns in 2 ns increments whentrue_arg {UNTilexit|UPONEXit|UPONENtry} edge_name a string of 8 alphanumeric characters edge_spec

proceed_qualifier patt_name a string of 8 alphanumeric characters

label_name string of up to 6 alphanumeric characters resource_id

pattern

over_sample_value an integer from 1 to 32 in powers of 2 setup_time a real number from 2 ns to 510 ns in 2 ns increments hold_time a real number from 2 ns to 33.554 ms in 2 ns increments number_of_levels an integer from 1 to 4 sample_period

time_value a real number from 2 ns to 33.554 ms post_value integer from 1 to 99 representing percentage time_val

qualifier see "Qualifier" on page 3-6

a string consisting of falling, either edge respectively. A period don’t care.

{PATTern1|PATTern2|PATTern3|PATTern4|EDGE1| EDGE2} "{#B{0|1|X}...| #Q{0|1|2|3|4|5| 6 |7 |X}...| #H{0|1|2|3|4|5|6 |7 |8|9|A|B|C |D|E|F|X} ...| {0|1|2 |3|4|5|6|7|8|9}...}"

a real number from 500 ps to 524.29 µs in WIDetiming mode

real number from either (2 whichever is greater to (1048574 × sample period)

{R|F|E|.}

R, F, and E represents rising,

sample period) or 16 ns

(.)

represents a

3–6

Qualifier

Trigger Menu Commands

Qualifier

Figure 3-2

{PATT1|NOTPATT1}

{PATT2|NOTPATT2}

{PATT3|NOTPATT3}

{PATT4|NOTPATT4}

The qualifier for the trigger subsystem can be terms Edge 1 and Edge 2, and Timer. In addition, qualifiers can be the NOT boolean function of the qualifier can also be an expression or combination of expressions as shown below and in figures 3-2 and 3-3. In addition a combination of expressions is shown in "Complex Qualifier," in figure 3-4 on page 3-9.

The following figures show how qualifiers are specified in all commands of the TRIGger subsystem that use

{"ANYSTATE"|"NOSTATE"|"<expression>"}

{AND|OR}

patt1

through

patt4

{AND|OR}

terms and the Timer. The

patt1

through

{AND|OR|XOR}

patt4

EDGE1

EDGE2

{TIMER_EXP|TIMER_NOT_EXP}

Timing <expression>

3–7

Trigger Menu Commands

Qualifier

Figure 3-3

{PATT1|NOTPATT1}

{PATT2|NOTPATT2}

{PATT3|NOTPATT3}

{PATT4|NOTPATT4}

{TIMER_EXP|TIMER_NOT_EXP}

State <expression>

Qualifier Rules

The following rules apply to qualifiers:

Qualifiers are quoted strings and, therefore, need quotes.

•

Expressions are evaluated from left to right.

•

Parentheses are used to change the order evaluation and, therefore, are

•

optional. An expression must map into the combination logic presented in the

•

combination pop-up menu within the TRIGger menu as shown in figure 3-4.

{AND|OR}

{AND|OR|XOR}

3–8

Trigger Menu Commands

Qualifier

Examples

Figure 3-4

’PATT1’ ’( PATT1 OR PATT2 )’ ’(( PATT1 OR PATT2 ) AND EDGE2 )’ ’(( PATT1 OR PATT2 ) AND EDGE2 AND TIMER_NOT_EXP )’ ’(( PATT1 OR PATT2 ) AND ( EDGE1 OR EDGE2)) OR TIMER_EXP’ ’TIMER_NOT_EXP AND (( PATT1 OR PATT2 ) OR (EDGE1 OR EDGE2))’

The following statements are all correct and have the same meaning. Notice that the conventional rules for precedence are not followed. The expressions are evaluated from left to right.

":TRIGGER:BRANCH1 ’PATT3 AND PATT4 OR EDGE1 OR EDGE2’, 1, 3" ":TRIGGER:BRANCH1 ’((PATT3 AND PATT4) OR (EDGE1 OR EDGE2))’, 1, 3" ":TRIGGER:BRANCH1 ’EDGE1 OR (PATT3 AND PATT4) OR EDGE2’,1, 3"

Complex Qualifier

Figure 3-4 is a front-panel representation of the complex qualifier

NOTPATT1 OR PATT2) AND (EDGE1 OR EDGE2) OR TIMER_EXP

(

3–9

Trigger Menu Commands

TRIGger (TRACe)

Example

Selector

This example would be used to specify this complex qualifier.

OUTPUT XXX;":TRIGGER:BRANCH1 ’((PATT1 OR PATT2) AND (EDGE1 OR EDGE2))’, 2, 3"

In the first level, the operators you can use are resources, but only OR is available for the edge resources. Either

may be used at the second level to join the two groups together. The

timer resource can be combined with the pattern and edge resources with

AND, OR

Thus, an expression like ( operands are both simple terms from separate groups.

, or

XOR

. It is acceptable for a group to consist of a single term.

PATT2 AND EDGE1)

AND

, or OR for pattern

is legal since the two

AND

TRIGger (TRACe)

:TRIGger

The TRIGger (TRACe) selector is used as a part of a compound header to access the settings found in the Trigger menu. It always follows the SELECT(n) command when you first access the module. It must precede any command you wish to send to the TRIGger subsystem unless you send combined command messages (see "Combined Commands in the Same Subsystem" in Chapter 1 of the Agilent Technologies 16500B/16501A Programmer’s Guide).

Although the menu is called Trigger and the primary keyword is the command parser in the 16517A/18A is designed to accept eliminates the need to change programs written for earlier modules that required the keyword TRACe.

TRIGger

TRACe

. This

Example

OUTPUT XXX;": TRIGGER:CLEAR ALL"

3–10

ACQuisition (WIDetiming Type Only)

Trigger Menu Commands

Command

Example

Query

Returned Format

Example

:TRIGger:ACQuisition {AUTOmatic|MANual}

The ACQuisition command allows you to specify the acquisition mode for the timing analyzer. This command results in an error (–211, Legal Command but settings conflict) if the STATe or FASTtiming is selected.

OUTPUT XXX;": TRIGGER:ACQUISITION AUTOMATI C"

:TRIGger:ACQuisition?

The ACQuisition query returns the current acquisition mode specified. This query results in an error (–211, Legal Command but settings conflict) if the STATe or FASTtiming is selected.

[:TRIGger:ACQuisition] {AUTOmatic|MANual}<NL>

OUTPUT XXX;": TRIGGER:ACQUISITION?"

ARMedby

Command

:TRIGger:ARMedby {RUN|SMB}

The ARMedby command allows you to specify which source arms the 16517A/18A. The timing analyzer can be armed internally with the RUN option or externally with the SMB option. When the RUN option is specified and when the timing analyzer is not in the intermodule tree, sending RUN immediately arms the analyzer. If the timing analyzer is to be armed by another module in the intermodule tree, it is eventually armed by RUN through the other module. Specifying SMB allows the timing analyzer to be armed by an external source connected to the SMB connector on the rear panel.

3–11

Trigger Menu Commands

BRANch

Example

Query

Returned Format

Example

Command

OUTPUT XXX;": TRIGGER:ARMEDBY RUN"

:TRIGger:ARMedby?

The ARMedby query returns the current arming source.

[:TRIGger:ARMedby] {RUN|SMB}<NL>

OUTPUT XXX;": TRIGGER ARMEDBY?"

BRANch

:TRIG ger:BRANch<N> {OFF|<br anch_qualifier>, <occur rence>, <t o_ level_nu mber>}

The BRANch command defines the secondary branch qualifier, occurrence count, and the sequence level to jump to for a given sequence level. When this branch qualifier is matched, the sequencer will jump to the specified sequence level. When the OFF option is specified, the secondary branch for the given sequence level is turned off.

When an occurrence count of greater than 1 is specified, the occurrence counter for the specified sequence level is assigned to the secondary branch. Therefore, any occurrence count previously specified for the primary branch using the FIND command will be overridden. Also, when you specify an occurrence count greater than 1, any previous use of the timer resource for either branch in this sequence level will be overridden.

If you specify the timer resource to be part of the secondary branch qualifier for this level, any previous setting of an occurrence count in either the primary or the secondary branch will be overridden.

3–12

Trigger Menu Commands

BRANch

If you specify the timer resource to be part of the secondary branch qualifier, and you specify an occurrence count greater than 1 for the secondary branch, an error (–211, Legal command but settings conflict) results and the command is ignored. For example,

OR PATT1’,2,2"

is illegal because the timer is specified as part of the

":TRIGGER:BRANCH1 ’TIMER_EXP

qualifier and the specified occurrence count is 2.

The BRANch command in conjuction with the FIND command allows you to program sequence levels in terms of user-programmable levels only. There is no programming support for macros except SETUP and HOLD. See Hint on page 3-2.

<to_level_

number>

<branch_

qualifier>

Examples

<N>

integer from 1 to

integer from

<number_of_levels>

{1 to <number_of_levels>|TRIGGER}

integer from 1 to 16777216

OUTPUT XXX;":TRIGGER:BRANCH1 ’ANYSTATE’, 3, 4" OUTPUT XXX;":TRIGGER:BRANCH2 ’PATT1’, 7, 3" OUTPUT XXX;":TRIGGER:BRANCH3 ’((PATT1 OR PATT2) OR NOTPATT3)’, 1, 4"

. See "Qualifier" on page 3-6

3–13

Trigger Menu Commands

CLEar

Query Syntax

Returned Format

Example

Command

Example

:TRIGger:BRANch<N>?

The BRANch query returns the current branch qualifier specification for a given sequence level.

[:TRIGger:B RANch<N>] <branch_qualifier> , <occurrence_count>, <to_level_number><NL>

OUTPUT XXX;": TRIGGER:BRANCH3?"

CLEar

:TRIG ger:CLEar {All|SEQuenc e|RESource|NAMes}

The CLEar command allows you to clear all settings in the Timing Trigger menu and replace them with the default, clear only the sequence levels, clear only the resource term patterns and edges, or clear only the resource names.

OUTPUT XXX;": TRIGGER:CLEAR RESOURCE"

3–14

DURation (Timing mode only)

Trigger Menu Commands

DURation (Timing mode only)

Commands

<resource_

<N>

name>

:TRIGger:DURation<N> <resource_name>, <present_arg>, LT, <dur_time>

:TRIGger:DURation<N> <resource_name>, <pres ent_arg>, GT, <dur_time> , <whentrue_arg>

The DURation command allows you to specify the pattern duration in terms of the presence or absence of the pattern, duration of the pattern being greater than or less than a specified time, and when the pattern is considered true for a given pattern resource term as it is used in a given sequence level. Refer to Chapter 4, "Trigger Menu" in the Agilent Technologies 16517A/18A User’s Reference for detailed information on the

When you specify the pattern the name given to the resource instead of the default names PATT1 through PATT4. This differs from the Agilent Technologies 16550A and 1660-series logic analyzers. The name given to the pattern sensitive. For example, "A" is equivalent to "a" in a pattern resource name.

This command results in an error (–211, Legal Command but settings conflict) if the State Mode is selected.

an integer from 1 to

a string of 8 alphanumeric characters naming the pattern resource term

<number_of_levels>

<resource_name>

<whentrue_arg>

, the 16517A/18A looks for

<resource_name>

options.

is not case

<present_arg>

<dur_time>

<whentrue_arg>

{PRESent|ABSent}

greater than

less than

a real number between 0 ns and 510 ns in 2 ns increments

{UNTilexit|UPONEXit|UPONENtry}

3–15

Trigger Menu Commands

DURation (Timing mode only)

Example

Query

Returned Format

Example

OUTPUT XXX;":TRIGGER:DURATION1 ’PATT1’, PRESENT, GT, 300ns, UNTILEXIT"

:TRIGg er:DURat io n<N>? <res ource_na me>

The DURation query returns the current pattern duration for the given pattern resource term at the specified sequence level.

[:TRIGger:DURation<N>]<resource_name>, <present_arg>, {GT|LT}, <dur_time>[ , <whentrue_arg>]<NL>

OUTPUT XXX;": TRIGGER:DURATON<N>? ’PATT1’"

3–16

EDGE (Timing Mode Only)

Trigger Menu Commands

EDGE (Timing Mode Only)

Command

<edge_name>

<label_name>

<edge_spec>

Example

:TRIGger:EDGE <edge_name>, <label_name>, <edge_spec>

The EDGE command allows you to specify the edge specification for a given edge resource. Edge specifications are strings with a length equal to the number of assigned bits and can contain R (rising), F (falling), or E (either edge). Each command deals with only one label in the given term; therefore, a complete specification could require several commands.

When you specify the edge resource, the 16517A/18A looks for the name given to the resource instead of the default names EDGE1 or EDGE2. This differs from the Agilent Technologies 16550A and 1660-series logic analyzers. The name given to the edge resource is not case sensitive. For example, "EDGE1" is equivalent to "edge1" in pattern resource names.

This command results in an error (–211, Legal Command but settings conflict) if the State Mode is selected.

a string of 8 alphanumeric characters naming the edge resource term

a string of 6 alphanumeric characters

a string containing

OUTPUT xxx;":TRIGGER:EDGE ’EDGE1’, ’DATA’, ’R’"

{R|F|E}

with a length equal to the number of assigned bits

Query

Returned Format

Example

:TRIGger:EDGE? <edge_name>, <label_name>

The EDGE query returns the current edge specification for the given edge resource and label.

[TRIGger:EDGE] <edge_name>, <label_name>, <edge_spec><NL>

OUTPUT xxx;":TRIGGER:EDGE? ’EDGE1’, ’DATA’"

3–17

Trigger Menu Commands

FIND

Command

:TRIG ger:FIND<N> <branch_qu alifier>, <occur rence>, <t o_ level_nu mber>

The FIND command defines the primary branch qualifier, occurrence count, and sequence level to jump to for a given sequence level.

When an occurrence count of greater than 1 is specified, the occurrence counter for the specified sequence level is assigned to the primary branch. Therefore, any occurrence count previously specified for the secondary branch, using the BRANch command, will be overridden. Also, when you specify an occurrence count greater than 1, any previous use of the timer resource for either branch in this sequence level will be overridden.

If you specify the timer resource to be part of the primary branch qualifier for this level, any previous setting of an occurrence count in either the primary or secondary branch will be overridden.

If you specify the timer resource to be part of the primary branch qualifier, and you specify an occurrence count greater than 1 for the primary branch, an error (–211, Legal command but settings conflict) results and the command is ignored. For example,

PATT1’,2,2"

and the specified occurrence count is 2.

The FIND command in conjuction with the BRANch command allows you to program sequence levels in terms of user-programmable levels only. There is no programming support for macros except SETUP and HOLD. See Hint on page 3-2.

is illegal because the timer is specified as part of the qualifier

":TRIGGER: F IND1 ’TI ME R _EXP OR

<N>

<branch_

qualifier>

integer from 1 to the number of existing sequence levels (maximum 4)

The "NOSTATE" qualifier is not available for the FIND command.

. See "Qualifier" on page 3-6

3–18

Trigger Menu Commands

FIND

<occurrence_

count>

<to_level_

number>

<number_of_

levels>

Examples

Query

Returned Format

Example

an integer from 1 to 16777216

integer from

{1 to <number_of_levels>|TRIGger}

integer from 1 to the number of existing sequence levels (maximum 4)

OUTPUT XXX;":TRIGGER:FIND1 ’ANYSTATE’, 2, 4" OUTPUT XXX;": TRIGGER:FIND3 ’((NOTPATT1 AND NO TPATT2) OR NOTPATT3)’, 1, 3"

:TRIGger:FIND4?

The FIND query returns the current branch qualifier specification for a given sequence level.

[:TRIGger:F IND<N>] <branch_qualifier>, <o ccurrence_count>, <to_level_number><NL>

OUTPUT XXX;": TRIGGER:FIND<N>?"

3–19

Trigger Menu Commands

PATTern

Command

<patt_name>

<label_name>

:TRIGger:PATTern <patt_name>, <label_name>, <pattern>

The PATTern command allows you to a specify a pattern recognizer term for a given pattern resource. Each command deals with only one label in the given term; therefore, a complete specification could require several commands. Since a label can contain 32 bits or less, the range of the pattern value will be between 2 in binary, it represents the bit values for the label inside the pattern recognizer term. Since the pattern parameter may contain don’t cares and be represented in several bases, it is handled as a string of characters rather than a number.

When you specify the pattern <patt_name>, the 16517A/18A looks for the name given to the pattern instead of the default name PATT1 through PATT4. This differs from the Agilent Technologies 16550A and 1660-series logic analyzers. The name given to the pattern resource is not case sensitive. For example, "PATTERN1" is equivalent to "pattern1" in a pattern resource name.

a string of 8 alphanumeric characters naming the pattern resource term

string of up to 6 alphanumeric characters

"{#B{0|1|X} . . . | #Q{0|1|2| 3 |4|5 |6 | 7 |X} . . . | #H{0|1|2 |3|4 |5 | 6 |7|8 |9|A|B|C|D|E| F| X} . . . | {0|1|2|3|4|5|6|7|8|9} . . . }"

− 1 and 0. When the value of a pattern is expressed

Example

OUTPUT XXX;":TRIGGER:PATTERN ’ADDR’,’LABEL1’, ’#B11100011’"

3–20

Trigger Menu Commands

REName

Query

Returned Format

Example

Command

<resource_id>

<resource_name>

:TRIGger:PATTern? <patt_name>, <label_name>

The PATTern query returns the current pattern recognizer specification for a given pattern resource.

[:TRIGger:PATTern] <patt_name>, <label_name>, <pattern><NL>

OUTPUT XXX;":TRIGGER:PATTERN? ’ADDR’, ’LABEL1’"

REName

:TRIGg er:RENam e {< resource _id>, <resou rce_name >| DEFault}

The REName command allows you to assign a logical name to a given pattern or edge resource. This logical name is then used when referring to the resource in other commands and queries. The DEFault option returns all pattern and edge logical names to the default values.

{PATTern1|PATTern2|PATTern3|PATTern4|EDGE1|EDGE2}

a string of up to 8 alphanumeric characters

Example

Query

OUTPUT XXX;":TRIGGER:RENAME PATTERN1, ’JMP0’"

:TRIGger:REName? <resource_id>

The REName query returns the current logical name assigned to a given resource.

3–21

Trigger Menu Commands

SAMPclk (State Mode Only)

Returned Format

Example

Command

<over_sample_

value>

Example

[:TRIgger:REName] <resource_id>, <resource_name><NL>

OUTPUT XXX;": TRIGGER:RENAME? PATTERN2"

SAMPclk (State Mode Only)

:TRIG ger:SAMPclk <over_samp le_value>

The SAMPclk command allows you to specify the current oversampling value from 1 to 32 samples per clock depending on the current value of the external clock period. The cannot exceed 2 GHz. For example, at a clock speed of 100 MHz the maximum the slowest clock rate (20 MHz), the maximum 32 (32 × 20 MHz = 640 MHz). This command results in an error (–211, Legal command but settings conflict) if the State mode is not selected.

an integer from 1 to 32 in powers of 2

OUTPUT XXX;": TRIGGER:SAMPLCK 16"

<over_sample_value>

is 16 (100 × 16 = 1.6 GHz). Additionally, at

times the sample clock

<over_sample_value>

can be

Query

Returned Format

Example

:TRIGger:SAMPclk?

The SAMPclk query returns the current value of oversampling.

[:TRIGger:S AMPclk] <over_sample_value>< NL>

OUTPUT XXX;": TRIGGER:SAMPLCLK?"

3–22

SEQuence

Trigger Menu Commands

SEQuence

Command

<number_of_

levels>

Example

Query

Returned Format

Example

:TRIGg er:SEQue nc e <number_ of_level s>

The SEQuence command defines the timing analyzer trace sequence. First, it deletes the current trace sequence. Then, it inserts the number of levels specified, with default settings. The number of user levels can be between 1 and 4.

integer from 1 to 4

OUTPUT XXX;":TRIGGER:SEQUENCE 4"

:TRIGger:SEQuence?

The SEQuence query returns the number of user levels in the current sequence specification.

[:TRIG ge r: SEQuence ] <n um ber_of_l ev els><NL>

OUTPUT XXX;": TRIGGER:SEQUENCE?"

The SEQuence command allows you to program sequence levels in terms of user-programmable levels only. There is no programming support for macros except SETUP and HOLD. See Hint on page 3-2.

3–23

Trigger Menu Commands

SETUPHOLDA (Timing Mode Only)

Command

<label_name>

<edge_name>

<set_up_time>

<hold_time>

<N>

:TRIGger:SETUPHOLDA<N> <edge_name>, <label_name1> [, <lab el_name2>], <setup_tim e>, <hold_time>

The SETUPHOLDA command allows you to specify the setup and hold macro number 1. This macro finds setup or hold time violations on the channels specified by specified by must exist prior to sending this command. Make sure you send the SEQuence command with the appropriate number of levels just prior to sending the SETUPHOLDA command. When the edge is specified in setup and hold, two edge resources are used; therefore, the other edge resource is not available for any sequence level. This command results in an error (–211, Legal Command but settings conflict) if the State Mode is selected.

an integer from 1 to setup and hold edge is to be specified.

a string of up to 6 alphanumeric characters

a string of up to 8 alphanumeric characters containing the name (given by the REName command) for

a real number from 2 ns to 510 ns in 2 ns increments

a real number from 2 ns to 33.554 ms in 2 ns increments

<label_name1> <edge_name>

<number_of_levels>

<label_name2>

. The sequence level specified in this command

edge1

edge2

relative to the clock edge

for the sequence level in which the

Examples

OUTPUT XXX;":TRIGGER:SETUPHOLDA1 ’EDGE1’, ’ADDR’, 6E-9, 4E-9" OUTPUT XXX;":TRIGGER:SETUPHOLDA1 ’EDGE1’, ’ADDR1’, ’ADDR2’, 6E-9, 4E -9 "

3–24

SETUPHOLDB (Timing Mode Only)

Trigger Menu Commands

Command

<label_name>

<edge_name>

<patt_name>

<N>

:TRIGger:SETUPHOLDB<N> <edge_name>, <patt_name>, <label_name1> [, <label_name2>], <setup_time>, <hold_time>

The SETUPHOLDB command allows you to specify the setup and hold macro number 2. This macro finds setup or hold time violations on the channels specified by valid pattern. The sequence level specified in this command must exist prior to sending this command. Make sure you send the SEQuence command with the appropriate number of levels just prior to sending the SETUPHOLDB command. When the edge is specified in setup and hold, two edge resources are used; therefore, the other edge resource is not available for any sequence level. This command results in an error (–211, Legal Command but settings conflict) if the State Mode is selected.

an integer from 1 to setup and hold edge is to be specified.

a string of up to 6 alphanumeric characters

a string of up to 8 alphanumeric characters containing the name (given by the REName command) or

<label_name1>

<number_of_levels>

<label_name2>

edge1

patt1

edge2

through

clocked by an edge within a

for the sequence level in which the

patt4

<set_up_time>

<hold_time>

Examples

a real number from 2 ns to 510 ns in 2 ns increments

a real number from 2 ns to 33.554 ms in 2 ns increments

OUTPUT XXX;":TRIGGER:SETUPHOLDB1 ’EDGE1’, ’patt1’, ’ADDR’, 6E-9, 4E -9 " OUTPUT XXX;":TRIGGER:SETUPHOLDB1 ’EDGE1’, ’patt1’, ’ADDR1’, ’ADDR2’, 6E-9 , 4E-9"

3–25

Trigger Menu Commands

SETUPHOLDC (Timing Mode Only)

Command

<label_name>

<patt_name>

<set_up_time>

<hold_time>

<N>

:TRIGger:SETUPHOLDC<N> <patt_name>, <label_name1> [, <lab el_name2>], <setup_tim e>, <hold_time>

The SETUPHOLDC command allows you to specify the setup and hold macro number 3. This macro finds setup or hold time violations on the channels specified by The sequence level specified in this command must exist prior to sending this command. Make sure you send the SEQuence command with the appropriate number of levels just prior to sending the SETUPHOLDC command.

This command results in an error (–211, Legal Command but settings conflict) if the State Mode is selected.

an integer from 1 to setup and hold edge is to be specified.

a string of up to 6 alphanumeric characters

a string of up to 8 alphanumeric characters containing the name (given by the REName command) or

a real number from 2 ns to 510 ns in 2 ns increments

a real number from 2 ns to 33.554 ms in 2 ns increments

<label_name1>

<number_of_levels>

<label_name2>

patt1

through

clocked by a pattern/pulse.

for the sequence level in which the

patt4

Examples

OUTPUT XXX;":TRIGGER:SETUPHOLDC1 ’patt1’, ’ADDR’, 6E-9, 4E-9" OUTPUT XXX;":TRIGGER:SETUPHOLDC1 ’patt1’, ’ADDR1’, ’ADDR2’, 6E-9, 4E -9 "

3–26

SPERiod

Trigger Menu Commands

SPERiod

Command

<sample_period>

Example

Query

Returned Format

:TRIGger:SPERiod <sample_period>

The SPERiod command allows you to set the sample period for the next acquisition of the timing analyzer when in the wide timing mode. If the fast timing mode is selected, the sample period is always 250 ps. When this command is sent, the acquisition mode is automatically set to manual (see "TRIGger:ACQuisition" on page 3-11). The value you specify for this command is rounded to the nearest allowable setting.

This command results in an error (–211, Legal command but settings conflict) if the analyzer is in the State mode or the Fast Timing mode.

real number from 500 ps to 65.536 µs

OUTPUT XXX;": TRIGGER:SPERIOD 64E−9"

:TRIGger:SPERiod?

The SPERiod query returns the sample period of the current acquisition. If there is no valid data, the query returns 9.9E37.

[:TRIGger:SPERiod] <sample_period><NL>

Example

OUTPUT XXX;": TRIGGER:SPERIOD?"

3–27

Trigger Menu Commands

TIMER

Command

<time_value>

Example

Query

Returned Format

<N>

:TRIGg er:TIMER <N > <time_va lue>

The TIMER command allows you to set the time value the timer resource will be set to upon entering a given sequence level. The limits of the timer are 2 ns to 33.554 ms in 2 ns increments in the timing modes. The increment value varies with the external clock in the State mode. The rounded to the nearest clock period. Sending this command will automatically override any settings for the occurrence counter in either the primary or the secondary branch.

an integer from 1 to the number of existing sequence levels (maximum of 4)

real number from 2 ns to 33.554 ms

OUTPUT XXX;":TRIGGER:TIMER1 100E−6"

<time_value>

will be

:TRIGger:TIMER<N>?

The TIMER query returns the current time value at the sequence level specified by

[:TRIG ge r: TIMER<N> ] <t im e_value> <N L>

<N>

Example

OUTPUT XXX;": TRIGGER:TIMER1?"

3–28

TPOSition

Trigger Menu Commands

TPOSition

Command

<time_val>

:TRIG ger:TPOSition {STARt|C ENTer|END|DELay, <time_ val>|POS Ts tore, <pos t_value> }

The TPOSition (trigger position) command allows you to set the trigger at the start, center, end or at any position in the trace using delay or poststore. Delay is specified as a real number representing the time between the trigger and the first acquired sample. In the state mode, if the external clock period is greater than 16 ns, the poststore clock runs at the external clock frequency and the delay limits are 0 ns to (1048574 × external clock period). If the external clock period is less than 16 ns, the external clock is divided down by a power of 2 such that the period of the poststore clock is a minimum of 16 ns.

Otherwise, in the timing mode, with the sequencer running at 500 MHz, the poststore clock runs at the same rate as the sample clock or

sample period×2

clock period is 16 ns. Poststore is defined as 1 to 99 percent with a poststore of 99 percent being

the same as start position and a poststore 1 percent being the same as an end trace.

If the analyzer is a timing analyzer, this command will automatically set the acquisition mode to MANUAL (see "TRIGger:ACQuisition" on page 3-11).

real number from 0 to (1048574 × external clock period), divided down sample period, or divided down external clock period.

where x is great enough so that the minimum poststore

<post_value>

Examples

integer from 1 to 99 representing percentage of poststore.

OUTPUT XXX;": TRIGGER:TPOSITION END" OUTPUT XXX;":TRIGGER:TPOSITION POSTstore, 75"

3–29

Trigger Menu Commands

TPOSition

Query

Returned Format

Example

:TRIGger:TPOSition?

The TPOSition query returns the current trigger position setting.

[:TRIGger:T POSition] {STARt|CENTer|END| DELay, <time_ va l> |POSTsto re , <p ost_valu e> }<NL>

OUTPUT XXX;": TRIGGER:TPOSITION?"

3–30

Waveform Menu Commands

4–1

Introduction

The WAVeform subsystem contains the commands available for the Timing Waveforms menu in the 16517A/18A. These commands are:

ACCumulate

•

ACQuisition

•

CENTer

•

CLRPattern

•

CLRStat

•

DELay

•

INSert

•

LABel

•

MINus

•

MMODe

•

OCONdition

•

OPATtern

•

OSEarch

•

OTIMe

•

OVERlay

•

PLUS

•

RANGe

•

REMove

•

RUNTil

•

SAMPclk

•

SIZE

•

SOFFset

•

SPERiod

•

TAVerage

•

TMAXimum

•

TMINimum

•

TPOSition

•

VRUNs

•

XCONdition

•

XOTime

•

XPATtern

•

XSEarch

•

XTIMe

•

4–2

Figure 4-1

Waveform Menu Commands

WAVeform Subsystem Syntax Diagram

4–3

Figure 4-1 (continued)

Waveform Menu Commands

WAVeform Subsystem Syntax Diagram (continued)

4–4

Figure 4-1 (continued)

Waveform Menu Commands

WAVeform Subsystem Syntax Diagram (continued)

4–5

Figure 4-1 (continued)

Waveform Menu Commands

WAVeform Subsystem Syntax Diagram (continued)

4–6

Table 4-1 WAVeform Parameter Values

Parameter Value

marker_type delay_value module_spec label_name string of up to 6 alphanumeric characters

bit_id integer from 0 to 31 waveform

acquisition_spec state_options timing_options label_pattern

occurrence time_value real number

module_number slot number in which the time base card is installed time_range real number between 2.5 ns and 500 s run_until_spec

GT greater than LT less than value real number

{X|O|XO|TRIGger}

real number between −2500 s and +2500 s

{1|2|3 |4|5|6|7|8|9|10}

string containing

{A|B|C|D|E|F|G|H|I|J} {ENTering|LEAVing|CLOCk} {ENTering|LEAVing} "{#B{0|1|X} . . . | #Q{0|1| 2 |3|4|5|6|7| X }. ..| #H{0|1| 2|3 | 4 |5|6|7|8|9| A |C |D |E|F|X}... | {0|1|2 |3|4|5|6|7|8 |9 |X } . .. } "

integer from −131071 to +131071

OFF|LT, <value> |GT, <value>|INRange ,<value>,

{

<value>|OUT Range, <value>, <value>|EQU al|NEQual}

Waveform Menu Commands

<acquisition_spec>{1|2}

(slot where acquisition card is located)

4–7

Table 4-1 (Continued)

Waveform Menu Commands

WAVeform

WAVeform Parameter Values

Parameter Value

over_sample_value an integer from 1 to 32 in powers of 2

size_spec

coarse_time a real number from –5 ns to +5 ns in increments of 200 ps

Fine_time

pod_skew_time

sample_period

time_val

post_val an integer from 1 to 99 representing percentage of data

{BESTfit|SMALl|MEDium|LARGe}

an absolute real number that is within ±500 ps of

<coarse_time>

an absolute real number that is within ±500 ps of

<coarse_time>

a real number from 250 ps to 524.29 µs depending on mode

real number from either (2 whichever is greater to (1048574 × sample period)

after the trigger

with a maximum of ±5 ns

sample period) or 16 ns

Selector

Example

WAVeform

:WAVeform

The WAVeform selector is used as part of a compound header to access the commands found in the Timing Waveform menu. It always follows the SELECT(n) command when you first access the module. It must precede any command you wish to send to the WAVeform subsystem unless you send combined command messages (see "Combined Commands in the Same Subsystem" in Chapter 1 of the Agilent Technologies 16500B/16501A Programmer’s Guide).

OUTPUT XXX;":WAVEFORM:DELAY 100E−9"

4–8

ACCumulate

Waveform Menu Commands

ACCumulate

Command

Example

Query

Returned Format

Example

:WAVeform:ACCumulate <setting>

The ACCumulate command allows you to control whether the Waveform display gets erased between each individual run or whether subsequent waveforms are allowed to be displayed over the previous waveforms.

{0|OFF}

OUTPUT XXX;": WAVEFORM:ACCUMULATE ON"

{1|ON}

:WAVeform:ACCumulate?

The ACCumulate query returns the current setting. The query always returns the setting as the characters o (off) or 1 (on).

[:WAVeform:ACCumulate] {0|1}<NL>

OUTPUT XXX;": WAVEFORM:ACCUMULATE?"

4–9

Waveform Menu Commands

ACQuisition (WIDetiming Type Only)

Command

Example

Query

Returned Format

Example

:WAVef orm:ACQu is ition {AUT Omatic|M ANual}

OUTPUT XXX;":WAVEFORM:ACQUISITION AUTOMATIC"

:TRIGger:ACQuisition?

The ACQuisition query returns the current acquisition mode specified. This query results in an error (–211, Legal Command but settings conflict) if the STATe or FASTtiming is selected.

[:WAVe fo rm :ACQuisi ti on ] {AUTOmat ic |MANual} <N L>

OUTPUT XXX;": WAVEFORM:ACQUISITION?"ACCu mulate

CENTer

Command

<marker_type>

Example

:WAVeform:CENTer <marker_type>

The CENTer command allows you to center the waveform display about the specified markers. Centering about both the X and O markers will change the s/div and delay settings.

{X|O|XO|TRIGger}

OUTPUT XXX;": WAVEFORM:CENTER X"

4–10

CLRPattern

Waveform Menu Commands

CLRPattern

Command

Example

Command

Example

:WAVeform:CLRPattern {X|O|ALL}

The CLRPattern command allows you to clear the patterns in the Specify Patterns menu, which are the patterns used for pattern searches.

OUTPUT XXX;": WAVEFORM:CLRPATTERN ALL"

CLRStat

:WAVeform:CLRStat

The CLRStat command allows you to clear the waveform statistics without having to stop and restart the acquisition.

OUTPUT XXX;": WAVEFORM:CLRSTAT"

4–11

Waveform Menu Commands

DELay

Command

<delay_value>

Example

Query

Returned Format

Example

:WAVef orm:DELa y <d elay_val ue>

The DELay command specifies the amount of time between the timing trigger and the horizontal center of the the timing waveform display. The allowable range for delay values is −2500 s to +2500 s. If the acquisition mode is Automatic, as delay becomes large in an absolute sense, the sample rate is adjusted so that data will be acquired in the time window of interest.

real number between −2500 s and +2500 s

OUTPUT XXX;":WAVEFORM:DELAY 100E−6"

:WAVeform:DELay?

The DELay query returns the current time offset (delay) value from the trigger to the center of the waveform display.

[:WAVe fo rm :DELay] <d el ay _value>< NL >

OUTPUT XXX;": WAVEFORM:DELAY?"

4–12

INSert

Waveform Menu Commands

INSert

Command

<module_spec>

<label_name>

<bit_id>

Example

:WAVeform:INSert [<module_spec>,] <labe l_name>[, {<bit_id>|OV ERlay|ALL}]

The INSert command allows you to add waveforms to the waveform display. Waveforms are added from top to bottom on the screen. When 96 waveforms are present, inserting an additional waveform replaces the last waveform. Bit numbers are zero based, so a label with 8 bits is referenced as bits 0 through

7. Specifying OVERlay causes a composite waveform display of all bits or channels for the specified label. If you do not specify the third parameter, ALL is assumed.

{1|2|3|4|5|6|7|8|9|10}

string of up to 6 alphanumeric characters

integer from 0 to 31

OUTPUT XXX;":WAVEFORM:INSERT 1, ’WAVE’,10"

4–13

Waveform Menu Commands

LABel

Command

<label_name>

Example

Query

Returned Format

Example

:WAVef orm:LABe l <label_n ame>

The LABel command in the Waveform menu allows you to change which label’s pattern is displayed in the Pattern-at-Marker field when in the time marker mode. If the label, an error (200, Label not found) results and the command is ignored.

a string of up to 6 alphanumeric characters representing an existing label name (see

OUTPUT XXX;":WAVEFORM:LABEL DATA"

FORmat:LABel

<label_name>

in chapter 2)

you send does not match an existing

:WAVeform:LABel?

The LABel query returns the name of the label currently displayed in the Pattern-at-Marker field.

[:WAVe fo rm :LABel] <l ab el _name><N L>

OUTPUT XXX;": WAVEFORM:LABEL?"

4–14

MINus

Waveform Menu Commands

MINus

Command

<module_spec>

<acquisition_

spec>

Example

:WAVeform:MINus <module_spec>, <waveform>, <waveform>

The MINus command inserts time-correlated A−B (A minus B) oscilloscope waveforms on the screen. The first parameter is the module specifier where the oscilloscope module resides, where 1 through 10 refers to slots A through J. The next two parameters specify which waveforms will be subtracted from each other. The second waveform is subtracted from the first waveform.

MINus is only available for oscilloscope waveforms.

{1|2|3|4|5|6|7|8|9|10}

string containing

{A|B|C|D| E|F|G|H|I|J}

OUTPUT XXX; ":WAVEFORM:MINUS 2, ’A1’, ’A2’"

<acquisition_spec>{1|2}

(slot where acquisition card is located)

4–15

Waveform Menu Commands

MMODe

Command

Example

Query

Returned Format

Example

:WAVef orm:MMOD e {O FF|PATTe rn|TIME| MSTats}

The MMODe (Marker Mode) command selects the mode that controls marker placement and the display of the marker readouts. When PATTern is selected, the markers will be placed on patterns. When TIME is selected, the markers move to specific time values. In MSTats, the markers are placed on patterns, but the readouts will be time statistics.

OUTPUT XXX; ":WAVEFORM:MMODE TIME"

:WAVeform:MMODe?

The MMODe query returns the current marker mode.

[:WAVeform:MMODe]

OUTPUT XXX;": WAVEFORM:MMODE?"

{OFF|PATTern|TIME|MSTats}<NL>

4–16

OCONdition

Waveform Menu Commands

OCONdition

Command

<state_

options>

<timing_ options>

Examples

Query

Returned Format

:WAVeform:OCONdition {<state_options>| <timing_options>}

The OCONdition command specifies where the O marker is placed. The O marker can be placed on the entry or exit point of the OPATtern when in the PATTern or STATistics marker modes. An additional option in state mode is CLOCk which places the O marker on externally clocked states only, ignoring the oversampled states.

{ENTering|LEAVing|CLOCk}

{ENTering|LEAVing}

OUTPUT XXX; ":WAVEFORM:OCONDITION ENTERING" OUTPUT XXX; ":WAVEFORM:OCONDITION CLOCK"

:WAVeform:OCONdition?

The OCONdition query returns the current setting.

[:WAVeform: OCONdition] {<state_options> |<timing_options>}<NL>

Example

OUTPUT XXX;": WAVEFORM:OCONDITION?"

4–17

Waveform Menu Commands

OPATtern

Command

<label_name>

<label_pattern>

Example

:WAVe form:OPATtern <label_n ame>, <label_pattern>

The OPATtern command allows you to construct a pattern recognizer term for the O marker which is then used with the OSEarch criteria and OCONdition when placing the marker on patterns. Since this command deals with only one label at a time, a complete specification could require several invocations.

When the value of a pattern is expressed in binary, it represents the bit values for the label inside the pattern recognizer term. Whatever base is

used, the value must be between 0 and (2 more than 32 bits. Because the cares, it is handled as a string of characters rather than a number.

string of up to 6 alphanumeric characters

"{#B{0|1|X} . . . | #Q{0|1|2| 3 |4|5 |6 | 7 |X} . . . | #H{0|1|2 |3|4 |5 | 6 |7|8 |9|A|B|C|D|E| F| X} . . . | {0|1|2|3|4|5|6|7|8|9} . . . }"

OUTPUT XXX; ":WAVEFORM:OPATTERN ’A’, ’511’"

<label_pattern>

−

1), since a label may not have parameter may contain don’t

Query

Returned Format

Example

:WAVef orm:OPAT te rn? <label _name>

The OPATtern query, in pattern marker mode, returns the pattern specification for a given label name. In the time marker mode, the query returns the pattern under the O marker for a given label. If the O marker is not placed on valid data, don’t cares (X) are returned.

[:WAVeform: OPATtern] <label_name>, <label _pattern><NL>

OUTPUT XXX;":WAVEFORM:OPATTERN? ’A’"

4–18

OSEarch

Waveform Menu Commands

OSEarch

Command

Example

Query

Returned Format

:WAVef orm:OSEa rc h <occurre nce>, <ori gin>

The OSEarch command defines the search criteria for the O marker which are then used with the associated OPATtern recognizer specification and the OCONdition when placing the marker on patterns. The origin parameter tells the marker to begin a search at the start of acquired data, at the trigger, or at the X marker. The occurrence parameter determines which occurrence of the OPATtern recognizer specification, relative to the origin, the marker actually searches for. An occurrence of 0 places a marker on the selected origin. With a negative occurrence, the marker searches before the origin. With a positive occurrence, the marker searches after the origin.

{STARt|TRIGger|XMARker}

integer from −131071 to +131071

OUTPUT XXX; ":WAVEFORM:OSEARCH +10,TRIGGER"

:WAVeform:OSEarch?

The OSEarch query returns the search criteria for the O marker.

[:WAVe fo rm :OSEarch ] <o cc urrence> ,< origin>< NL >

Example

OUTPUT XXX;": WAVEFORM:OSEARCH?"

4–19

Waveform Menu Commands

OTIMe

Command

<time_value>

Example

Query

Returned Format

Example

:WAVef orm:OTIM e <t ime_valu e>

The OTIMe command positions the O marker in time when the marker mode is TIME. If data is not valid, the command performs no action.

real number

OUTPUT XXX; ":WAVEFORM:OTIME 30.0E−6"

:WAVeform:OTIMe?

The OTIMe query returns the O marker position in time. If acquired data is not valid, the query returns 9.9E37.

[:WAVe fo rm :OTIMe] <t im e_ value><N L>

OUTPUT XXX;": WAVEFORM:OTIME?"

4–20

OVERlay

Waveform Menu Commands

OVERlay

Command

<module_spec>

<acquisition_

spec>

Example

:WAVeform:OVERlay <module_spec>, <waveform> [, <wav eform>]...

The OVERlay command overlays two or more oscilloscope waveforms and adds the resultant waveform to the current waveforms display. The first parameter of the command syntax specifies which slot contains the oscilloscope time base card. The next parameters are the labels of the waveforms that are to be overlaid.

{1|2|3|4|5|6|7|8|9|10}

string containing

{A|B|C|D|E|F|G|H|I|J}

OUTPUT XXX;":WAVEFORM:OVERLAY 4, ’C1’,’C2’"

<acquisition_spec>{1|2}

(slot where acquisition card is located)

4–21

Waveform Menu Commands

PLUS

Command

<module_spec>

<acquisition_

spec>

Example

:WAVeform:PLUS <module_spec>, <waveform>, <waveform>

The PLUS command inserts time-correlated A+B oscilloscope waveforms on the screen. The first parameter is the module specifier where the oscilloscope module resides, where 1 through 10 refers to slots A through J. The next two parameters specify which waveforms will be added to each other.

PLUS is only available for oscilloscope waveforms.

{1|2|3|4|5|6|7|8|9|10}

string containing

{A|B|C|D|E|F|G|H|I|J}

OUTPUT XXX; ":WAVEFORM:PLUS 2, ’A1’, ’A2’"

<acquisition_spec>{1|2}

(slot where acquisition card is located)

4–22

RANGe

Waveform Menu Commands

RANGe

Command

<time_range>

Example

Query

Returned Format

Example

:WAVef orm:RANG e <t ime_rang e>

The RANGe command specifies the full-screen time in the timing waveform menu. It is equivalent to ten times the seconds-per-division setting on the display. The allowable values for RANGe are from 2.5 ns to 500 s.

real number between 2.5 ns and 500 s

OUTPUT XXX;":WAVEFORM:RANGE 100E−9"

:WAVeform:RANGe?

The RANGe query returns the current full-screen time.

[:WAVe fo rm :RANGe] <t im e_ value><N L>

OUTPUT XXX;": WAVEFORM:RANGE?"

REMove

Command

Example

:WAVeform:REMove

The REMove command deletes all waveforms from the display.

OUTPUT XXX;": WAVEFORM:REMOVE"

4–23

Waveform Menu Commands

RUNTil

Command

:WAVeform:RUNTil <run_until_spec>

The RUNTil (run until) command allows you to define a stop condition when the run mode is repetitive. Specifying OFF causes the analyzer to make runs until either the display’s issued.

There are four conditions based on the time between the X and O markers. These four conditions are as follows:

Less Than (LT) a specified time value.

•

Greater Than (GT) a specified time value.

•

In the range (INRange) between two time values.

•

Out of the range (OUTRange) between two time values.

•

End points for the INRange and OUTRange should be at least 250 ps apart, since this is the minimum time at which data is sampled.

When Compare is allocated to this module, there are two conditions that are based on a comparison of the acquired state data and the compare reference image. The analyzer will run until one of the following conditions is true:

Every channel of every label has the same value (EQUal), unless

•

unmasked. Any channel of any label that is not masked has a different value

•

(NEQual).

Stop

field is touched or the

STOP

command is

<run_until_

Examples

spec>

<value>

{OFF|LT, <value>|GT, <value>|INRange, <value>,< value> | OUTRange, <value>,<value>|EQUal|NEQual}

real number

OUTPUT XXX;": WAVEFORM:RUNTIL GT, 800.0E−6" OUTPUT XXX;":WAVEFORM:RUNTIL INRANGE, 4.5E-9, 5.5E-9"

4–24

Waveform Menu Commands

SAMPclk (State Mode Only)

Query

Returned Format

Example

Command

<over_sample_

value>

:WAVeform:RUNTil?

The RUNTil query returns the current stop criteria.

[:WAVeform: RUNTil] <run_until_spec><NL>

OUTPUT XXX;": WAVEFORM:RUNTIL?"

SAMPclk (State Mode Only)

:WAVEF ORM:SAMP cl k <over_sa mple_val ue>

an integer from 1 to 32 in powers of 2

<over_sample_value>

is 16 (100 × 16 = 1.6 GHz). Additionally, at

times the sample clock

<over_sample_value>

can be

Example

OUTPUT XXX;":WAVEFORM:SAMPLCK 16"

4–25

Waveform Menu Commands

SIZE

Query

Returned Format

Example

Command

<size_spec>

Example

Query

:WAVeform:SAMPclk?

The SAMPclk query returns the current value of oversampling.

[:WAVEFORM:SAMPclk]<over_sample_value><NL>

OUTPUT XXX;": WAVEFORM:SAMPLCLK?"

SIZE

:WAVeform:SIZE <size_spec>

The SIZE command allows you to specify the waveform size for this module.

{BESTfit|SMALl|MEDium|LARGe}

OUTPUT XXX;": WAVEFORM:SIZE BESTFIT"

:WAVeform:SIZE?

Returned Format

Example

The SIZE query returns the current setting for this module.

[:WAVeform:SIZE] <size_spec><NL>

OUTPUT XXX;": WAVEFORM:SIZE?"

4–26

SOFFset (State Mode Only)

Waveform Menu Commands

SOFFset (State Mode Only)

Command

<coarse_time>

<fine_time>

<pod_skew_

time1...10>

Examples

Query

Returned Format

:WAVef orm:SOFF se t <coarse_ time>[,< fine_tim e> [, <pod_skew_time1>, ..., <pod_skew_time10>]]

a real number from –5 ns to +5 ns in increments of 200 ps

an absolute real number that is within ±500 ps of maximum of ±5 ns

OUTPUT XXX;":WAVEFORM:SOFFSET –1.2E–9" OUTPUT XXX;":WAVEFORM:SOFFSET 1.1E–9, 1.3E–9, 1.25E–9,

1.25E-9"

<coarse_time>

with a

:WAVeform:SOFFset?

The SOFFset query returns the current setting for the clock offset. If the SOFFset setting is only set with value. If the setting is set with

<pod_skew_time>

by a time value for each pod.

[:WAVeform:SOFFset] <coarse_time>[,<fine_time>, <pod_s ke w_ time1>, .. ., <p od_skew_ ti me10>]<N L>

, the query returns

<coarse_time>

<coarse_time>, <fine_time>

, the query returns one time

, and

followed

Example

OUTPUT XXX;": WAVEFORM:SOFFSET?"

4–27

Waveform Menu Commands

SPERiod

Command

<sample_period>

Example

Query

Returned Format

:WAVef orm:SPER io d <sample_ period>

The SPERiod command allows you to set the sample period for the next acquisition of the timing analyzer when in the wide timing mode. If the fast timing mode is selected, the sample period is always 250 ps. When this command is sent, the acquisition mode is automatically set to manual (see TRIGger:ACQuisition in chapter 3). The value you specify for this command is rounded to the nearest allowable setting.

This command results in an error (–211, Legal command but settings conflict) if the analyzer is in the state mode or the fast timing mode.

real number from 500 ps to 65.536 µs

OUTPUT XXX;":WAVEFORM:SPERIOD 50E−9"

:WAVeform:SPERiod?

The SPERiod query returns the sample period of the current acquisition. If there is no valid data, the query returns 9.9E37.

[:WAVe fo rm :SPERiod ] <s am ple_peri od ><NL>

Example

OUTPUT XXX;": WAVEFORM:SPERIOD?"

4–28

TAVerage

Waveform Menu Commands

TAVerage

Query

Returned Format

<value>

Example

Query

Returned Format

<value>

:WAVeform:TAVerage?

The TAVerage query returns the value of the average time between the X and O markers when the marker mode is acquired data, the query returns 9.9E37.

[:WAVeform:TAVerage] <value><NL>

real number

OUTPUT XXX;": WAVEFORM:TAVERAGE?"

MSTats

. If there is no valid

TMAXimum

:WAVeform:TMAXimum?

The TMAXimum query returns the value of the maximum time between the X and O markers when the marker mode is acquired data, the query returns 9.9E37.

[:WAVeform:TMAXimum] <value><NL>

real number

MSTats

. If there is no valid

Example

OUTPUT XXX;": WAVEFORM:TMAXIMUM?"

4–29

Waveform Menu Commands

TMINimum

Query

Returned Format

<value>

Example

Command

:WAVeform:TMINimum?

The TMINimum query returns the value of the minimum time between the X and O markers when the marker mode is acquired data, the query returns 9.9E37.

[:WAVeform:TMINimum] <value><NL>

real number

OUTPUT XXX;": WAVEFORM:TMINIMUM?"

MSTats

. If there is no valid

TPOSition

:WAVef orm:TPOS it ion {STARt |CENTer| END|DELa y, <time_ val>|POS Ts tore, <pos t_value}

and the delay limits are 0 ns to (1048574 × external clock period). If the external clock period is less than 16 ns, the external clock is divided down by a power of 2 such that the period of the poststore clock is a minimum of 16 ns.

Otherwise, in the timing mode with the sequencer running at 500 MHz, the poststore clock runs at the same rate as the sample clock or

sample period×2

clock period is 16 ns. Poststore is defined as 1 to 99 percent with a poststore of 99 percent being

the same as start position and a poststore 1 percent being the same as an end trace.

If the analyzer is a timing analyzer, this command will automatically set the acquisition mode to MANUAL (see "TRIGger:ACQuisition" on page 3-11).

where x is great enough so that the minimum poststore

4–30

Agilent 16517A Programmers Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

In This Book

Contents

Selecting the Module

Programming the Logic Analyzer

Mainframe Commands

Command Set Organization

Module Status Reporting

MESE<N>

MESR<N>

Format Menu Commands

FORMat Subsystem Syntax Diagram

FORMat

CLOCk (State mode only)

LABel

REMove

SOFFset (State Mode Only)

SYNC

THReshold

TYPE

Trigger Menu Commands

TRIGger Subsystem Syntax Diagram

Qualifier

TRIGger (TRACe)

ACQuisition (WIDetiming Type Only)

ARMedby

BRANch

CLEar

DURation (Timing mode only)

EDGE (Timing Mode Only)

FIND

PATTern

REName

SAMPclk (State Mode Only)

SEQuence

SETUPHOLDA (Timing Mode Only)

SETUPHOLDB (Timing Mode Only)

SETUPHOLDC (Timing Mode Only)

SPERiod

TIMER

TPOSition

Waveform Menu Commands

WAVeform Subsystem Syntax Diagram

WAVeform

ACCumulate

ACQuisition (WIDetiming Type Only)

CENTer

CLRPattern

CLRStat

DELay

INSert

LABel

MINus

MMODe

OCONdition

OPATtern

OSEarch

OTIMe

OVERlay

PLUS

RANGe

REMove

RUNTil

SAMPclk (State Mode Only)

SIZE

SOFFset (State Mode Only)

SPERiod

TAVerage

TMAXimum

TMINimum

TPOSition