Agilent 70820A Programmers Guide

Programmer's Guide

HP 71500 Series

ABCDE

70820-90053

No.

art

P

HP

Printed

in

USA

Ma

y

1993

c

yrigh

Cop



All Righ

ermission

p

oun

F

1400

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ts

tain

t

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ed.

prohibited,

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kard

ac

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except

arkw

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duction,

as

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y

a

1991,

y

adaptation,

ed

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allo

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ta

1993

under

CA

translation

or

cop

the

95403,

yrigh

USA

without

ws.

la

t

prior

written

Certification

Hewlett-Packard Company certies that this product met its published specications at the

time of shipment from the factory. Hewlett-Packard further certies that its calibration

measurements are traceable to the United States National Institute of Standards and

Technology, to the extent allo wed by the Institute's calibration facility, and to the calibration

facilities of other International Standards Organization members.

Warranty

This Hewlett-Packard instrument product is warranted against defects in material and

workmanship for a perio d of one year from date of shipment. During the warranty perio d,

Hewlett-Packard Company will, at its option, either repair or replace products whichproveto

be defective.

For warranty service or repair, this product must be returned to a service facility designated

and

ard

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Buy

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when

to

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NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD

SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY

AND FITNESS FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES

REMEDIES.

HEWLETT-P

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VIDED

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HEREIN

CKARD

A

INDIRECT, SPECIAL, INCIDENT

BASED ON CONTRA

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ANY OTHER LEGAL THEOR

AND

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OR

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AMAGES, WHETHER

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CLUSIVE

EX

Assistance

available

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duct

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Pr

lett-Packar

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any

or

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maintenanc

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assistanc

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ducts.

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iii

Safety Symbols

The following safetysymbols are used throughout this manual. Familiarize yourself with each

of the symbols and its meaning before operating this instrument.

Caution

caution

sign denotes a hazard. It calls attention to a pro cedure which,

The

if not correctly performed or adhered to, could result in damage to or

destruction of the instrument. Do not pro ceed beyond a

caution

sign until the

indicated conditions are fully understood and met.

Warning

warning

sign denotes a hazard. It calls attention to a procedure which,

The

if not correctly performed or adhered to, could result in injury or loss of life.

Do not proceed beyond a

warning

sign until the indicated conditions are fully

understood and met.

General

arning

W

arning

W

Caution

Safety

Considerations

instrument

this

e

Befor

protectiv

through

pro

Any

the

personal

There

injury

Any

with

the

with

vided

interruption

instrument,

injury

many

are

Be extremely

.

adjustments

protective

e

protectiv

the

of

disconnection

or

.

points

careful.

or service

ers

v

co

switche

is

conductor

contact.

earth

e

protectiv

instrument

the

in

procedures that

ed

v

remo

mak

,

on

d

the

of

(grounding)

e

the

of

should

sure

e

w

po

ac

conductor,

protectiv

which

require operation

performed

be

personnel.

Before this instrument is switched on,

make sure its primary p ower circuitry

has b een adapted to the voltage of the ac power source.

correct

the

ailure

F

instrumen

the

to

set

ac

the

when the

t

o

p

er input

w

ac

to

plugged

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cable

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has

it

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er

earth

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if contacted,

can,

oltage

v

in.

been

to

inside

terminal

only

could

properly

et outlet

sock

a

or

can

cause personal

of the

trained

y

b

cause

grounded

outside

result

instrument

service

damage

in

to

iv

Programming Fundamentals

This chapter provides the necessary information to operate a microwave transition analyzer

system via a computer. The topics described in this chapter are as follows:

Setup Pro cedures for Remote Operation

Address Switches

Communication With the System

Status Reporting Structure

Synchronization of Events and Commands

ransfer

T

Data

1

Programming

Fundamentals

1-1

Setup Procedures

Note

Refer to the HP 71500A MicrowaveTransition Analyzer Installation and

Verication Manual for more information on installation, conguration, and

addressing for microwave transition analyzer systems.

The following procedure describes how to connect your equipment for remote operation

specically for a microwave transition analyzer system.

1. Connect computer, microwave transition analyzer system, and other peripherals with

HP-IB cables.

Note

When connecting the HP-IB cables to the microwave transition analyzer

system, make sure that these connections are made to the HP-IB connector

on the mainframe and

not

to the mo dule itself. This ensures access to all

equipment via the public HP-IB.

(If

bus.

the

to

dule

mo

fron

displa

to

reset

panel,

t

y

it.)

the address

on

then

the

til

un

press the

micro

After

2.

not sure

k

Chec

3.

view

o

T

NN

NN

N

N

N

N

N

N

N

N

N

N

N

ADDRESS MAP

transition

the

the

N

N

N

N

N

N

HP-IB

how

HP-IB

address

the

N

N

N

N

N

N

N

N

N

N

N

N

analyzer

cables

to reset

address

N

N

softk

are installed,

device,

a

of

map,

urn

T

.

ey

appears

the

press

the

in

switc

micro

the

knob

the

reset all

its

h

a

w

4

DISPLA

on

address

line

transition

e

v

k

5

Y

the

map.

instruments

o,

er

w

o

p

analyzer

the

on

ey

panel

t

fron

connected

on,

then

y

displa

the

of

y

ou

map.

w

are

a

e

v

Note

The

access

micro

and

transition

e

v

a

w

error-rep

orting

analyzer

mo

capabilities.

dule

m

ust

be

cated

lo

in

ro

HP-IB

for

0

w

Programming

1-2

Fundamentals

Address Switches

Address switches set the HP-MSIB address of an element (mo dule); the column address

switches also set the HP-IB address for masters and independent elements. Some master

elements can also have their HP-IB address set through the use of softkeys (that is, soft-set

address).

The hard address switches for the microwave transition analyzer are located on the top of the

module.

Note

HP-IB address 31 is an illegal address and should not be used.

Descriptions of the address switches for the microwave transition analyzer are given below.

Switches

v

a

w

micro

address whic

transition

e

h

also

is

analyzer

the

switched

is

HP-IB

HP-IB

Column

hes

Switc

ADDRESS

w

Ro

ON-OFF

ADDRESS

1|5

Figure

When

the

o

These

address.

These

1-1.

is

this

HP-IB.

the

set

the

set

Address

the

set

HP

to

71500A

OFF,

HP-MSIB column

w

HP-MSIB

ro

address.

Switches 1|3

Self-Test Switches

SwitchA

hB

Switc

enables or disables portions of the power-on self test. In the OFF (or 0)

osition,

p

ortions

p

seconds

10

enables or disables the po

the normal po

HPMSIB

Caution

Disabling this test can prevent correct operation of the system. SwitchBis

intended for factory or service use only.

executed.

is

test

self

full

the

to

ed

skipp

are

the self

of

or

test

less.

wer-on HPMSIB c

wer on test is p erformed. In the ON

power-up test is skipp ed.

osition,

p

test

1)

approximately

time

In

k

the

eep

ON (or

the

heck. In the OFF (or 0) position,

(or 1) p osition, the

Programming

Fundamentals

arious

v

1-3

SwitchC

enables or disables lo oping on RAM test failures. In the OFF (or 0) position,

the lo oping is disabled. In the ON (or 1) position, the RAM data test will

loop on failures until the switchis moved to the OFF (or 0) position.

Caution

SwitchD

Caution

CNTRL

SYS

Soft-Set

This mo de can prevent correct op eration of the system. SwitchCisintended

for factory or service use only.

enables or disables printing any errors from certain p ortions of the p ower-up

self test. In the OFF (or 0) position, this mode is disabled. In the ON (or

1) position, the power-up self test will congure the \lo cal" HP-IB as TON

(talker only) and certain errors will print out information pertaining to the

errors.

This mo de can prevent correct op eration of the system. Switch D is intended

for factory or service use only.

system

the

is

set

is

dule ma

activ

dule

in

C

IF

the

and

y

e

ON

not

con

(or

REN.

assert

troller

HP-IB

(system

con

controller

dule

mo

the

is

h

switc

or

to

F

App

REN.

refer

Addresses

troller)

on the

is

in

set

more

endix

indicates whether

\local"

system

the

OFF

the

details on

assing

\P

G,

HP-IB.

troller

con

p

0)

(or

system con

Con

or not

this

If

and

osition,

troller

trol".

switc

ma

the mo

the mo

h

assert

y

ersus

v

p

1)

If this

C

IF

eration

op

osition,

nor

The

fron

the

til

un

Note

HP-IB

panel

t

another

address

of

soft-set

Changing

osition

p

of

the

micro

the

displa

address

the

the mo

of

.

y

is en

HP-IB

w

The

transition

e

v

a

soft-set

tered.

address

dules on

analyzer

address

the

via

the address

master

remains in

y

displa

map.

Use the following procedure to enter a soft-set HP-IB address.

1. Press the

2.

When

Use

3.

\70820A MT

4. When the next men

ter the new HP-IB address using the n

5. En

6.

Press

the

the

NNNNNNNNNNNNNNNNN

ENTER

4

DISPLAY

displa

fron

y

t-panel

A."

.

5

key on the displayfront panel.

press

ears,

app

or

u

step

eys to

k

scroll

NNNNNNNNNNNNNNNNNNNNNNNNN

NNNNNN

HP-IB ADDRSET

Main Men

knob

appears, press

u

umeric k

N

N

N

N

N

N

N

N

N

N

NN

N

N

N

N

the

ADDRESS

highligh

the

NNNNNNNNNN

.

eys on the displa

N

N

NN

N

mo

eect un

t

fron

N

N

NN

N

N

N

N

N

N

N

N

MAP

ted

ma

dule

til

panel do

N

N

softk

ey

rectangle

yfron

y

w

o

p

es not

.

to

t

changed

e

b

is

er

the

panel.

cycled,

aect the

lab

x

o

b

from

or

eled

Programming

1-4

Fundamentals

Communication with the System

This section develops some fundamental techniques for controlling the microwave transition

analyzer and obtaining sound measurement results. Remote operation of the microwave

transition analyzer is controlled with commands that mainly correspond to front-panel softkey

functions.

It is imp ortant to understand how messages are communicated to the microwave transition

analyzer. Therefore, enter and output statements and command syntax will b e discussed in

this section. It should b e noted that HP BASIC is used for all examples in this manual.

Talking to the Instrument

Commands are sent to the instrument with ASCI I program messages. These messages

are placed on the bus using an output command and passing the device address, program

message, and terminator. Passing the device address ensures that the program message is sent

to the correct interface and instrument.

Note

Executing

The actual

both

Angular brac

parameter

de

co

Information

across

is

that

HP

or

F

actual

automatically

Remote

OUTPUT

the con

troller

kets

that

bus.

the

t

sen

also

Series

9000

terminator

<

terminate

Commands

command you use when programming is dependenton

using.

are

ou

y

that

haracters

c

the

ts

only

the

not necessary

is

message.

ternally

in

sym

that

information

additional

to

These

.

olize

b

information

e

yp

t

con

\

<

an

or

is

The

across

>

programming

and

enclose

"

>

HP-IB

y

displa

message

the

200/300

the

at

the

w

command.

quotes

in

ed

terminator

bus.

trollers,

con

of

end

program

language

ords

the

message

or

represen

is

it

program

a

that

the

in

trollers

program

sen

is

Microwave transition analyzer programs control the passage of commands and data b etween

the microwave transition analyzer and the computer on the Hewlett-Packard Interface Bus

(HP-IB), using HP BASIC

An

OUTPUT

analyzer.

statement tells the computer to send a message to the microwave transition

example,

or

F

OUTPUT

executing

the

and

ENTER

output

statements.

statement

ns.

10

range

time

the

sets

w

elo

b

to

t

Programming

Fundamentals

1-5

ENTER

An

information

adding

y

query

b

statemen

computer.

the

to

question

a

t used

conjunction

in

return

o

T

(?)

mark

to

with

time

the

command:

the

micro

a

range

w

alue

v

a

transition

e

v

to

computer,

the

analyzer

query

rst

form

returns

a

the

Next,

computer:

Programming

1-6

en

statemen

ter

b

can

t

Fundamentals

eused

to

assign

the

returned

alue

v

to

v

a

ariable

in the

The value of the time range above is equated to the computer variable \Range". The variable

may be printed, stored, or used for any other computer function.

Syntax Requirements

All of the program examples in this manual show the recommended command syntax. All

microwave transition analyzer commands must be constructed according to sp ecic syntactical

rules which are outlined in Chapter 2, Programming Commands. Chapter 2 lists all of the

remote microwave transition analyzer commands in alphabetical order according to each

functional group subsystem. A group syntax diagram for each subsystem has been provided in

addition to syntax diagrams for each individual command or query.

Longform or Shortform Mnemonic Format

Program commands can be a combination of either uppercase or lowercase ASCII characters,

whereas the instrument responses are always returned in uppercase.

Capital letters are used to indicate the shortform (abbreviated spelling) of a command

program header that is minimally required. Lowercase letters indicate the longform (complete

elling).

sp

abbreviated

Note

When

elling

sp

y

An

ecifying

sp

indicated

other

a

b

elling other

sp

program

shortform

the

y

than the

command

or

shortform

or

the

query

use

,

complete

longform

or

either

sp

the

elling of

not

is

the longform.

alid.

v

or

Both program

ys

dela

OUTPUT

OUTPUT

either

the

@Mta;

@Mta; "SWE:TIME:RANG

written in

example,

and

Programs

follo

and

wing

presen

commands

the

of

on-screen

"SWEEP:TIME:RANGE

longform are

queries

program

tation

easily read

e

b

y

ma

lines

resp

(with

1;DELAY

1;DEL 1"

used

hanges

c

ect

and

1"

are

either

in

to

almost

longform

timebase

the

the trigger

!

!

self-do

in

or

0.1

to

b

t)

en

ev

Longform

Shortform

cumen

shortform.

seconds

second

1

y

The

ting.

F

division

er

p

time.

in

shortform

syntax conserves the amountof controller memory needed for program storage and reduces

the amount of I/O activity.

Refer to the individual syntax diagrams of each command for both the longform and

shortform mnemonic sp ellings.

Remote

Local

and

The lo cal, remote, and remote with local lo c

front-panel con

trol while a program

In lo cal mode, the instrumen

Control

kout mo des ma

is running.

t accepts and executes bus

arious degrees of

y be used

for v

commands and the fron

t panel is

entirely active.

In remote mo de, all front-panel input is disabled except for the local key and the line

h.

switc

In

out.

remote

(Lo

cal

with

con

lo

trol

cal

lo

can

k

c

only

out

de,

mo

restored

e

b

all

con

y

b

trols

the

(except

troller.)

con

line

the

Programming

switc

en

are

h)

Fundamentals

tirely

loc

ed

k

1-7

Note

Cycling the power also restores lo cal control, however, this will also reset

certain HP-IB states.

The instrument is placed in remote mo de by setting the REN bus control line true, and

then addressing the instrument to listen. Sending the lo cal lockout command

LLO

places the

instrument in lo cal lo ckout mode. The instrument can b e returned to lo cal mode by either

setting the REN line false, or sending the instrument the go-to-lo cal command

GTL

.

Initialization Statements

Programs should b egin with an initialization statement which is comprised of a series of

HP BASIC and microwave transition analyzer commands to ensure that the bus and all

appropriate interfaces are in a known state. The following example shows how to initialize the

microwave transition analyzer.

10 ASSIGN @Mta to 711

20 CLEAR @Mta

30 OUTPUT @Mta;"*SRE 0;*ESE 0;*RST;"

and

name

path

I/O

ASSIGN

The

assigns

is

and

name

that

assigned

command

an

to

the

to

an

is

resource.

I/O

device at

BASIC

HP

In

HP-IB address

command

example

the

11.

that

creates

o

ab

ve,

an

the I/O

path

name

\@Mta"

is

Note

ASSIGN

The

analyzer

computer

the

RESET

The

analyzer

All

analyzer

command

program.

program

command,

and pro

program

or

F

vides a

examples

addressed

is

oers

example,

the

and

*RST,

starting

d

goo

eral

sev

the

program

presets

this

in

HP-IB

at

an

adv

w

micro

can transfer

of the

all

t

oin

p

ual

man

address

when

tages

transition

e

v

a

parameters of

all

for

assume

data to

measuremen

that

711.

included

analyzer

a

micro

a

in

address is

storage

mass

the micro

cesses.

pro

t

v

a

w

unit.

e

v

wa

Executing

transition

e

easily c

hanged

transition

*RST

transition

e

v

a

w

micro

the

actually is the same as executing a number of microwave transition analyzer commands that

set the microwave transition analyzer to a known state.

The CLEAR command is an HP BASIC command that clears the input buer, the output

buer, and the command parser of the specied instrument. That is, a device on HP-IB is

it

that

bus

so

singly

ts

or

on

in

the bus

\cleared"

the

instrumen

To clear the microw

command

eration.

op

are

for

It

not

often

is

aected.

is ready

unison.

e transition analyzer, the \CLEAR @Mta" statemen

av

This

desirable

to reset

ma

only

one

instrumen

used

e

b

y

clear devices

to

so

t

ybeen

tma

that

on

other

tered

into the computer.

clear all devices at select code 7, the \CLEAR 7" statemen

To

tma

ybe en

tered in

to the

computer.

in

Programming

1-8

Fundamentals

Status Reporting Structure

This section describes and denes the status reporting structure used in the HP 71500A

MicrowaveTransition Analyzer. In general, the status data structure is used to \request

service" or indicate a specic condition (for example, operation complete) via SRQ (Service

Request). Therefore, this structure may be used to alert the user that certain events have

occurred without actually initiating a request for this information. Refer to Figure 1-2 for a

model of the status data structure.

Each of the integral parts of the status data structure are described below in more detail.

Figure

1-2.

Status

Data

Structure

2)

of

(1

Programming

Fundamentals

1-9

Status

Byte

Figure 1-2. Status Data Structure (2 of 2)

Register

The Status Byte Register con

Request Service (R

Figure 1-3

1-10

.

Programming

QS) messages, and Master Summary Status

Fundamentals

tains the device's Status Byte (STB) summary messages,

(MSS) messages. See

Figure 1-3. Status Byte Register

Note

Status

The

common query

er,

ev

w

Ho

7-bit

yte.

b

7-bit

OGRAM

except

oll

the

status

the

status

When

the

data

When

the

PR

p

message.

Bits 0 through 3 are not used at this time.

Register

Byte

(*STB?). Both

alue

v

the

Status

Status

Byte

yte

b

Byte

byte

A

T

A

D

the

that

MSS

The

can

for

t

sen

Register

message

Register

message

elemen

>

summary

MSS

summary

be

of these

bit

the

is

plus

is

plus

The

t.

message

read with

p

6

read

the

read

the

resp

message

either a

metho

osition

a

with

single-bit

the

with

single-bit

onse

app

indicates

ds

dep

serial

to

serial p

read

ends

p

QS

R

*STB?

MSS

*STB?

in

ears

the device

that

or

oll

status

the

the metho

on

\SPOLL

oll

message

to

common query

iden

bit

as

tical

6

message

is

the

has at

READ

the

message

yte

b

d used.

(@Mta)",

con

the

,

single

a

the

to

position

troller as

device

the

NR1

<

resp

in place

least

A

ST

iden

device

the

NUMERIC

onse

reason

one

TUS

tically

single

a

returns

to a

of

BYTE

returns

serial

the

for

.

R

requesting service.

Serial Poll

When a serial poll of the instrument is requested, the RQS bit is returned on bit 6 of the

status byte. An example of how to use the service request by conducting a serial p oll of all

instruments on the bus is describ ed below.

QS

transition

e

v

a

w

micro

a

bus;

the

It

on

assumed

also

is

that

erating

op

are

we

on

this

In

analyzer

example,

address

at

assume

11 and

that

a

there

prin

ter

are

at

instruments

o

w

t

address

1.

Interface Select Code 7.

The program command for serial poll using HP BASIC 4.0 is

is the address of the microw

Stat=SPOLL(701)

because the address of the prin

ave transition analyzer. The command for c

ter is 01 on

Stat=SPOLL(711)

hecking the prin

bus address 7. This command

. Address 711

ter is

reads the contents of the HP-IB Status Register into the variable called \Stat". At that time,

bit 6 of the variable Stat can be tested to see if it is set (that is, bit 6=1).

manner:

wing

follo

the

allo

ws

in

the

con

troller

the

\see"

to

Programming

line.

Q

SR

Fundamentals

1-11

The serial

Enable

1.

oll

p

terrupts

in

eration

op

on

can

the

b

bus.

e

conducted

This

2. If the SRQ line is high (that is, if some instrument is requesting service), then checkthe

instrument at address 1 to see if bit 6 of its status register is high.

3. Disable interrupts on the bus.

4. Tocheck whether bit 6 of an instrument's status register is high, use the following

command line.

IF BIT(Stat,6) THEN

5. If bit 6 of the instrument at address 1 is not high, then check the instrument at address 11

to see if bit 6 of its status register is high.

6. As soon as the instrument with status bit 6 high is found, check the rest of the status bits

to determine what is required.

The SPOLL(711) command causes much more to happen on the bus than simply reading the

register. This command clears the bus, automatically addresses the talker and listener, sends

SPE (serial poll enable) and SPD (serial poll disable) bus commands, and reads the data.

Standard Event Status Bit (ESB) Summary Message

ve

to

no

ALSE

F

Byte

ccurred

o

Figure

t Status

enabled

y

empt

ytes,

b

when

1-2

.

the

ESB

The

Register.

the

since

ESB

The

Register

are

ts

en

ev

Message

MA

The

Register.

Whenev

summary

MAV

Output

the

summary

state

Its

reading

last

summary

set

is

TRUE.

ailable

Av

summary

V

The

the

er

Queue

message

indicates

message

UE.

TR

(MA

message

of

state

device is

message

is

clearing

or

Con

V)

the

ready to

shall

empt

a

is

whether

TR

is

ersely

v

Queue

a

is

message

e

b

Refer

.

y

dened

or

UE

the

when

ESB

Standard Ev

of the

,

Summary

dened

indicates

accept

UE.

TR

Figure

to

one

that

or

more

message

not

en

enabled

an

summary message

Message

message

that

whether

y

MA

1-2

b

summary

V

.

request

a

The

app

t

or

the

Status

ev

app

in

ears

the enabled

of

Register.

in

t

en

is

in

ears

the Output

not

troller

con

message

bit

the

ALSE

F

bit

to

the

of

5

even

Refer

Standard

when

the

of

4

Queue is

output

shall

Status

ts ha

Even

Status Byte

data

e

b

The MAV summary message is used to synchronize information exchange with the controller.

The controller can, for example, send a query command to the device and then wait for MAV

to become TRUE. The system bus is available for other use while an application program is

waiting for a device to resp ond. If an application program begins a read op eration of the

Output

device

Note

Queue

resp

without

rst

V, all

MA

for

king

hec

c

onds.

Due to the operation of HP-MSIB, the MA

system

activit

bus

V bit is not implemen

y

ted when

the

til

un

up

held

is

using HP-MSIB.

.

Operation Status Bit (OSB) Summary Message

The OSB summary message is a dened message that appears in bit 7 of the Status Byte

ccurred

o

e

v

ha

ents

Register.

the

since

Figure

1-12

Programming

1-2.

Its

last

state

reading

indicates

or

whether

clearing

Fundamentals

not

or

the Standard

of

one

or

more

Op

of

eration

the

Status

enabled

ev

Register.

Refer

to

The OSB summary message is TRUE when an enabled event in the Standard Operation

Status Register is set TRUE. Conversely, the OSB summary message is FALSE when no

enabled events are TRUE.

Clearing the Status Byte Register

The CLEAR STATUS (*CLS) common command causes the Event Registers and Queues of

the status data structure to be cleared so that the corresp onding summary messages are clear.

The Output Queue and its MAV summary message are an exception and are unaected by

*CLS.

Service Request Enable Register

The Service Request Enable Register is an 8-bit register that can be used by the programmer

to select which summary messages in the Status Byte Register may cause service requests.

The programmer may select reasons for the device to issue a service request by altering the

contents of the Service Request Enable Register. Refer to Figure 1-4.

Figure 1-4. Service Request Enable Register

Reading/Writing the Service Request Enable Register

The Service Request Enable Register

is read with the SER

VICE REQUEST ENABLE

(*SRE?) common query. The response message to this query is a<NR1 NUMERIC

PROGRAM DATA>element that represents the sum of the binary-weighted values of the

of

alue

v

The

er).

b

um

Service

used

un

Service

The

(*SRE)

Request

is

6

bit

Request

common

Enable

ays

alw

Enable

command

Register

zero.

follo

(2

Register

ed

w

raised

written

is

a

y

b

the bit

of

er

w

o

p

the

to

the SER

with

to

DECIMAL NUMERIC

<

n

VICE

REQUEST

OGRAM

PR

Programming

ENABLE

>

A

T

A

D

Fundamentals

1-13

element. The<DECIMAL NUMERIC PROGRAM DATA>, when rounded to an integer

value and expressed in base 2 (binary), represents the bit values of the Service Request Enable

Register. A bit value of one indicates an enabled condition. A bit value of zero indicates a

disabled condition.

Note

*SRE is not aected by *RST.

The device always ignores the value of bit 6.

Service Request Generation

The Service Request function provides the device with the capabilities of requesting service

from the controller via the Service Request interface (SRQ, a line on HP-IB) and reporting

that it has requested service via the Request Service message (RQS, bit 6 of the Status Byte

Register).

The generation of service requests ensures that the device shall:

1. Assert an SRQ when a previously \enabled" condition o ccurs.

the

olled

p

2. Keep

device,

Release

3.

Assert

4.

the

dieren

e

b

Whenev

hanged,

c

device.

changes

messages

cal

lo

ALSE)

F

SRQ

or

an

rst

the

er

the

Device

to

the

asserted

tak

has

when

Q

SR

Qagain

SR

condition.

than

t

ten

con

device

status

Status

the

whic

hardw

un

sp

en

olled

p

if another

If

rst

the

of

ts

ust

m

transitions

Byte

either

h

are.

the

til

action

ecic

so

previous

the

for

Status

the

determine

Register

assert

troller

con

that

condition

SR

an

whether

not aect

do

(Request

has

cancel

to

con

the

condition

to

Q

Register

Byte

the

and

recognized

request

the

troller can

ccurs,

o

not

has

asserted

e

b

or

hange

c

the

state

the

Service

Service

TR

the

detect an

whether

een

b

again.

Service

the

aects

the

of

Request

UE)

service

example,

(for

not

or

cleared,

the service

SR

Enable

unassert

or

request

Q

SR

the

the

Request

terface

in

Q

Register

from

and

*CLS

another

troller

con

condition

next

Enable

request

directly

generate

(Request

command).

device.

cleared

has

m

Register

of

state

Instead,

.

w

t

Service

ust

o

are

the

The

device

shall

generate

a

new

service

request

(assert

Request

Service

TRUE)

when:

1. A bit in the Status Byte Register changes from FALSE to TRUE while the corresponding

bit in the Service Request Enable Register is TRUE.

2. A bit in the Service Request Enable Register changes from FALSE to TRUE while the

UE.

TR

Register

corresponding

in

bit

A

3.

bit

Status Byte

the

in

the

Status

Register

Byte

c

hanges

in the Service Request Enable Register c

In general, the con

troller application program m

that a new reason for service has o ccurred, but only that

occurred, and that the application program should c

is

ALSE

F

from

hanges from F

ust nev

er assume that an SR

heck the device Status Byte Register to

corresponding

the

and

UE

TR

to

ALSE to TR

UE sim

ultaneously.

Q indicates

a new reason for service ma

yha

ve

determine whether this is indeed the case.

Clearing the Service Request Enable Register

a

with

ed

w

of

follo

zero

clears

the

Service

The SER

DECIMAL

<

1-14

Programming

VICE

NUMERIC

REQUEST

Fundamentals

ENABLE

OGRAM

PR

(*SRE)

A

T

A

D

common

elemen

>

command

alue

v

t

bit

Request Enable Register. A cleared register does not allow status information to generate a

hardware Request Service message and thus, no service requests are issued.

Standard Event Status Register

The Standard Event Status Register structure has specic dened events assigned to specic

bits. Refer to Figure 1-5.

Bit 7 - Power On

(PON)

User

-

6

Bit

Request (URQ)

Bit 5 - Command

Error (CME)

Figure 1-5. Standard Event Status Register

This event bit indicates that an o-to-on transition has o ccurred in the

supply

er

w

o

p

ev

This

This ev

1. A syn

en

ent bit indicates that

of the

bit

t

tax error (con

Possible errors include a data elemen

device.

time.

this

at

used

not

is

one of the following ev

ents has occurred:

troller-to-device message) has been detected.

which violates the device

t

listening formats or whose type is unacceptable to the device.

2. A semantic error has o ccurred indicating that an unrecognized

header

w

device-dep

as receiv

enden

Unrecognized

ed.

headers

t

and

headers

incorrect

include

unimplemen

or

incorrect

common

ted

commands.

Programming

Fundamentals

1-15

3. A Group Execute Trigger (GET) was entered into the Input Buer

inside of a<PROGRAM MESSAGE>. A GET message is a

controller-to-device message dened as an addressed command.

The Command Error bit is not set to report any other device-dependent

condition. Events that are rep orted as Command Errors also are not

reported as Execution Errors, Query Errors, or Device-Dependent Errors.

Refer to the appropriate bit denitions for more information.

Bit 4 - Execution

Error (EXE)

-

3

Bit

Device-Dep

Error

enden

(DDE)

This event bit indicates that:

1. A<PROGRAM DATA>element following a header was evaluated

by the device as outside of its legal input range, or is otherwise

inconsistent with the capabilities of the device.

2. A valid program message could not be properly executed due to some

device condition.

Following an Execution Error, the device continues to process the input

stream.

Execution

expression

rounding

Ev

Query

denitions

This

t

Command

A

prop

F

input

a

that

ts

en

Errors,

t

en

ev

Device-Dep

complete

erly

wing

ollo

stream.

errors are

aluation

ev

umeric

n

generate

Device-Dep

or

more

for

indicates

bit

Error,

a

enden

Device-Dep

a

orted

rep

erations

op

elemen

data

Execution

information.

that

Error

to

Error,

is

some

Query

t

due

enden

the

y

b

ha

is

t

Errors

enden

error

an

nor

executed

y

an

condition,

Error,

t

device

en

tak

e

v

not rep

do

t Errors.

has

Execution

an

the

after

place.

orted as

not

Refer

ccurred

o

device

h

suc

device

rounding

or

F

an

generate

to

whic

Error.

op

errange.

v

o

as

tin

con

and

example,

Execution

Command Errors,

appropriate

the

neither

is

h

eration that

ues to

process

Error.

bit

a

did not

the

Bit 2 - Query Error

(QYE)

Bit 1 - Request

QC)

(R

trol

Con

1-16

Programming

Events that generate Device-Dependent Errors do not generate

Command Errors, Query Errors, or Execution Errors. Refer to the

appropriate bit denitions for more information.

This event bit indicates that:

1.

attempt is

An

output

no

is

eing

b

either

made

presen

Output

the

from

data

read

to

ending.

p

or

t

Queue

when

2. Data in the Output Queue has been lost.

The Query Error bit is not

set to rep ort an

y other condition. Ev

ents

that generate Query Errors do not generate Execution Errors, Command

Errors, or Device-Dependen

t Errors.

This event bit is not used at this time.

Fundamentals

Bit 0 - Operation

Complete (OPC)

This event bit is generated in response to the OPERATION

COMPLETE (*OPC) common command. It indicates that the device

has completed any pending operations and that the parser is ready to

accept more program messages. The parser is the logical portion of the

device whichtakes Data Byte Messages, END messages, and hardware

Group Execute Trigger messages from the Input Buer and analyzes

them by separating out the various syntactic elements.

Reading/Writing the Standard Event Status Register

The Standard Event Status Register is destructively read (that is, read and cleared) with the

STANDARD EVENT STATUS REGISTER common query (*ESR?).

The Standard Event Status Register cannot be written to remotely except to clear it.

Clearing the Standard Event Status Register

The Standard Event Status Register shall only be cleared by:

A CLEAR STATUS common command (*CLS).

records

er-on

w

o

p

A

y subsequen

an

en

ev

PON

sequence

tev

bit

t

(Bit

whic

ents

7).

initially clears

h

during the

t Status

of

Even

the

device

the Standard

sequence

er-on

w

o

p

Register

including

then

setting

the

the

in

for 8

Figure

ent

Register

Register

ESB

bits,

.

1-5

Status

Register

(*ESE?).

more

or

one

ws

allo

summary-message

with

returned

is

onding

the

h

eac

Enable

read

is

Data

corresp

Register

bit

ST

ev

(Bit

to

AND

as

a

the

in

ts

en

the

5of

in

bits

the

EVENT

ARD

binary-weigh

Standard

Status

Standard

the

ted

Status

reected

dened

is

Refer

Status

Enable

Enable

to

Ev

Enable

query

Standard

Standard

The

Status

Register).

t

Even

Reading/Writing

Standard

The

TUS

A

ST

<

NR1 NUMERIC RESPONSE DATA>.

Ev

Register

This

Status

ENABLE

t

en

Ev

e

b

to

register

Register.

Standard

the

t

en

Ev

common

Status

ent

The Standard Event Status Enable Register is written to bytheSTANDARD

EVENT STATUS ENABLE common command (*ESE). Data is encoded as

<

DECIMAL NUMERIC PROGRAM DATA>.

Clearing the

The Standard

Standard

Ev

Status

ent

Event Status Enable Register shall be cleared b

Enable

Sending the *ESE common command with a data v

er-on event.

w

Apo

Register

y the following:

alue of zero.

The Standard Event Status Enable Register is sp ecically not aected by the RESET

common command (*RST).

Even

Byte

t

Programming

Fundamentals

1-17

Output Queue

The Output Queue stores response messages until they are read. The availabilityofthe

output is summarized by the Message Available (MAV) summary message (bit 4 of the Status

Byte Register). The MAV summary message is used to synchronize information exchange with

the controller. Refer to Figure 1-6.

Queue

and

END

messages

in

to

the

Output

The

Resp

onse

ormatter

F

places

Figure

Data

Byte

Output

1-6.

Messages

Queue in resp onse to query commands. These bytes are removed from the Output Queue as

they are read by the controller. As long as the Output Queue contains one or more bytes,

MAVisTRUE.

The Output Queue is cleared upon power-on, Device Clear Active State Message (dcas), or

is

RESET

the

generated

(*RST) common

ts

ten

con

the

if

command

the Output

of

without

Queue

causing

discarded

are

Query

a

for

Error.

y

an

other

Query

A

reason.

Error

Standard Operation Status Register

Events in the

Standard Op eration Status Register ma

y be enabled with the following

commands:

STATus:OPERation:ENABle

STATus:OPERation:PTRansition

us:OPERation:NTRansition

T

A

ST

1-18

Programming

Fundamentals

Figure 1-7. Standard Operation Status Structure

The

denition

of

Operation

the

Status

Register

bits

(see

Figure

1-7

follo

as

is

)

bit 0: calibrating|set at the start of calibration, cleared at the end of calibration

ws:

bit 1: un

bit 2: un

used (dened

used (dened as ranging)

as settling)

bit 3: unused (dened as sweeping)

bit 4: unused (dened as measuring)

5:

bit

trigger

6:

bit

aiting

w

ccurs

o

un

used

trigger|set

for

(dened

as

when

aiting for

w

measuremen

the

arm)

a

trigger,

a

aiting

w

is

t

for

Programming

cleared

Fundamentals

when

1-19

bit 7: unused (dened as correcting)

bit 8: unused (dened as instrument-specic)

bit 9: unused (dened as instrument-specic)

bit 10: self test in progress (instrument-specic)|set at the start of self-test, cleared at the

end of self-test

bit 11: ready (instrument-specic)|set by the :READy command, cleared by a program

message terminator

bit 12: unused (dened as instrument-specic)

bit 13: unused (reserved)

bit 14: unused (dened as user-dened program running)

bit 15: always zero

Commands

Synchronization

section

This

commands,

and

tial

oten

p

A

application

measuremen

e

v

a

w

micro

voided

a

e

b

measuremen

describ

problem with

program

ts

transition

y

b

t

es

which

remotely

using

nished

is

Ev

of

hniques

tec

in turn

commands that

,

the

to

con

needs

analyzer

hronization

sync

efore

b

ents

insures

kno

b

and

whic

when

w

troller

efore

commands

making

hma

alid

v

tak

the

ust

m

making

y

an

eused

yb

measuremen

appreciable

e

commands

when

w

kno

a measuremen

instruct

that

measuremen

other

to insure

ts.

time

v

ha

trace

t.

sync

to

nished.

e

data

This

the

ts.

hronization

nish

Therefore,

ailable to

v

a

is

tial

oten

p

dule

mo

is

to

that

w

w

et

b

the

to

the

problem

un

ait

een

til

mak

can

a

ev

ts

en

e

with

For

the

UN

R

erations

op

example,

command

UN

R

command

consider

a

is

initiated b

data-logging

a

then

and

command

RUN

y the

mak

to

that

command

device

a

e

allows

whic

frequency

execution of

still

are

commanded

is

h

measuremen

subsequent

progress.

in

a

e

tak

to

MEAS:FREQ?.

using

t

commands while

UN

R

The

measuremen

command

t

The

device

the

therefore

takes appreciable time to perform. Figure 1-8 shows a timing diagram of this operation

without the use of a synchronization command.

It should b e noted that, without the use of a synchronization command, the RUN command

is still in progress when the FREQUENCY measurement is initiated. If the RUN command

example,

(for

progress

in

e

completed

not

has

FREQUENCY)

its

while

eration,

op

the

RUN

data

y

an

command

used

still

is

to mak

operation has been completed can the data be assumed to

other

ma

be v

measuremen

e

b

y

alid.

in

valid.

ts

Only

after

an

1-20

Programming

Fundamentals

Figure

1-9

command

RUN

the

initiated.

Figure 1-8. Timing Diagram Without A Synchronization Command

except

e

v

o

ab

illustrates

used. It

is

command

Therefore,

same

the

should b

completed

has

data

the

example

e noted

its

to

used

describ

as

that, with

eration

op

e

mak

ed

use

the

efore

b

FREQUENCY

the

sync

a

of

FREQUENCY

the

measuremen

sync

a

that

hronization

measuremen

hronization

command,

alid.

v

is

t

is

t

Figure

1-9. Timing

Diagram

Using

Synchronization

A

Command

General Sequence

The following example HP BASIC statemen

followed when making measuremen

1. OUTPUT @Mta;\*RST;

:SWE:MODE ASIN; . . . "

ts via remote con

ts illustrate the general

trol.

sequence that should be

RESET the mo dule, put it into SINGLE SWEEP mo de, then set up all desired parameters

on).

so

mo

and

de, a

single

measuremen

Programming

b

will

t

Fundamentals

en.)

tak

e

(for

OUTPUT

2.

v

In

example,

sw

a

e

ok

oltage

v

@Mta;\R

(In

eep.

range,

UN"

SINGLE

range,

time

SWEEP

1-21

3. SYNCHRONIZATION COMMAND Use a synchronization command to allow the module

to complete one operation before starting another. Refer to Synchronization Commands

below for more detailed information on the three forms of synchronization commands that

are available.

4.

OUTPUT @Mta;"MEAS:SOUR CHAN1;FREQ?"

ENTER @Mta;Frequency

Ask for and enter measurement data.

Synchronization Commands

There are three forms of synchronization commands that can be used in the general sequence

for remote measurements listed above. The three forms are listed and describ ed below.

Wait-To-Continue (*WAI)

This command instructs the module to not use the bus until all

operations are complete. If using triggered sweeps, this command may cause the bus to

\wait" indenitely if the trigger do es not o ccur.

Operation Complete (*OPC)

status

the

Output

*WAI

to

Assert

Queue

command, the

ccur.

o

SR

indicating

erations

op

where

state

metho

d

OUTPUT

sent

OUTPUT

sent

OUTPUT

is:

of

*OPC

(Service

Q

that

are

it

complete.

is

Request)

after the

aiting

w

@Mta;"*ESE

once

@Mta;"*SRE

once

@Mta;"*CLS;*OPC;"

This command instructs the module to send a \1" to the

complete.

of

aiting

w

is

the

are

to

indenitely

a sequence

assert

for

nev

this

needs

needs

HP-IB

only

only

SR

er

sync

structure

data

command

This

*OPC query

metho

This

indenitely

1;"

32;"

form

d

The

.

ma

is

has

receiv

when

result

y

sync

of

ed,

adv

the

sequence

!

!

erations

op

all

bus

the

in

hronization uses

dule

mo

the

tage

an

commands

of

command

This

command

This

Similar

an

for

commands

of

when

Q

in

eing

b

hronization

be

to

be

to

all

to

the

ev

a

REPEAT

UNTIL BIT (SPOLL(@Mta),6)=1

en

t

Note

1-22

\All op erations complete" is dened as 1) there is no trace in progress, and 2)

all remote commands have been parsed and processed.

Programming

Fundamentals

Data Transfer

The microwave transition analyzer represents trace data and non-trace data dierently.

For non-trace data, the microwave transition analyzer will send information backin

ASCII character co de as either text or numeric data. As an example of ASCII text, the

SWEEP:MODE query (SWE:MODE?) returns ASINjSINGjAUTOjTRIG as a response. As

an example of ASCII numeric data, the SWEEP:TIME RANGE query (SWE:TIME:RANG?)

returns a value X.XXEXX as a response.

Note

Some numeric responses are integers (for example, no decimal pointor

exponent).

For trace data, the microwave transition analyzer supp orts 16-bit binary, 32-bit binary,and

ASCII transfers (MSByte rst, LSByte last). Binary trace data is preceded by a header

to indicate that binary data is about to be received. The header is \#0" which indicates

indeterminate length binary data. When using the microwave transition analyzer via HP-IB,

the last data byte will have the EOI (END OR INTERRUPT) status line asserted with it.

Listed

BASIC example

HP

an

is

w

elo

b

program that

reads trace

data

e

v

a

w

micro

the

from

transition analyzer.

OUTPUT

ENTER

J=1

FOR

ENTER

NEXT

@Mta;"WAV:DATA?"

@Mta

TO

@Mta

USING

Points

"#,2A";Header$

USING

J

"#,W";Value(J)

Request

!

Read

!

Read

!

trace data.

header.

the

point.

each

Programming

Fundamentals

1-23

2

Language Reference Information

Introduction

This chapter contains organization and syntax information for the microwave transition

analyzer commands. The programming commands are divided into three types: common

commands, top-level commands, and subsystem commands. A command syntax summary is

shown at the beginning of each subsystem.

The commands or queries of each subsystem are listed in alphabetical order according to their

mnemonics. A syntax diagram, parameter information, and functional description is provided

for each command; however if more detailed information regarding a command function is

e

v

a

w

ma

b

y

Micro

used

e

in

necessary

ransition

T

Note

refer

,

Analyzer

Chapter

to

Either

3,

Reference

longform

the

\Key

Man

Denitions"

ual.

shortform

or

in

the

sp

HP

elling

71500A/HP

command

the

of

70820A

programming.

subsystems

The

CQUIRE

A

BASIC

CALIBRA

TION

CHANNEL

CONFIGURE

DAC

DIAGNOSTICS

DISPLAY

FUNCTION

HISTOGRAM

LIMIT

MARKER

MASS

MEMORY

MEASURE

in the

denes

starts

reloads

con

ecies

sp

a

w

micro

measuremen

the instrumen

calibration

v

all

trols

the

transition

e

v

ertical

metho

analyzer

conditions.

t

calibration

t

data.

Y-axis

or

acquiring sla

dfor

are:

sequence,

functions

of

ve

retriev

the input

dules

mo

calibration

es

channels.

w

o

p

at

er

on.

data,

or

controls the 12-bit DAC output.

controls the screen format and howwaveforms, data, and text are displayed

on-screen.

trols

con

allows v

eform math

v

a

w

the

arious statistics of the input c

functions.

hannels or function to be measured.

controls masks for pass/fail testing.

controls the t

wo cursor mark

ers.

provides mass storage capabilities for the HP 70820A.

mak

es

arious

v

eform measuremen

v

a

w

ts.

MODULA

SOUR

CE

TOR

con

trols

the

ternal

in

pulse

generator.

Language

Reference

Information

2-1

PEAK POWER

METER

Available with Option H10 only.

controls the operation of the HP 70820A as a statistical peak power meter.

PROGRAM

RF PULSE

SECURE

SOURCE

STATUS

SWEEP

SYSTEM

TABLE

TRIGGER

WAVEFORM

WINDO

XLINE,

W

YLINE

Notation Conv

Pictorial

controls HP Instrument BASIC.

controls the various parameters relating to RF pulses.

provides a convenient metho d for destroying or blanking mo dule

information.

controls the conguration and settings of an external source.

accesses the non-IEEE 488.2 status structures for this instrument.

controls all horizontal or X-axis functions.

returns the state of the microwave transition analyzer system.

controls tabular data measurements.

denes and controls trigger conditions.

provides access to waveform data and determines trace parameters.

sp

pro

ecies

the

vides access

to line

markers.

e used.

to b

ws

windo

math

and

FFT

entions

functional

each

in

for

is,

shown;

command

the

either

ho

upp

er,

ev

w

sequence.

ercase

the

follo

The

subsystem

items enclosed

All

ercase

w

lo

or

minim

Items

um

enclosed b

wing

in

general

this

letters

um

n

guidelines

ual.

man

y

b

ma

of

er

b

rectangular b

ya

rounded

a

used)

e

b

y

haracters is

c

refer

en

to

elop

v

and

shown

indicate

ox

the

m

e

ust

pictorial

case

are

e

b

in upp

parameters

insensitiv

tered

en

ercase.

tax

syn

exactly as

diagrams

(that

e

used

description of each parameter is given in the resp ective command descriptions.

Command sequence items are connected by lines. Each line can be followed in only one

direction, as indicated by an arrow at the end of each line.

Any combination of command sequence items that can be generated by following the lines

proper

the

in

command

A

Textual

Notation

CAPITAL

LETTERS

tactically

syn

direction

sequence

is

item

optional

is

Capital letters are used to indicate the shortform of a command program

header that is

minimally required. Lo

correct.

there

if

is a

alid

v

path

around

it.

wercase letters indicate the longform

(complete spelling).

<>

Angular brackets are used to enclose elements of the language being dened.

\F

to

Refer

information

unctional

tained

con

Syn

within

tax

Con

these

v

en

brac

tions"

k

ets.

explanation

an

for

w

elo

b

of

A

2-2

Language

Reference

Information