Agilent 8647A Operations Guide

Errata

8647A Signal Generator Operation and Service Guide 08647-90006

March 1984

Title & Document Type:

Manual Part Number:

Revision Date:

HP References in this Manual

This manual may contain references to HP or Hewlett-Packard. Please note that HewlettPackard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX. For example, model number HP8648A is now model number Agilent 8648A.

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Operation and Service Guide

HP

SERIAL

This

3247A

8647A

NUMBERS

manual applies directly

and

3349A.

Signal Generator

to

all instruments

with

serial prefix

HP

Wt

NO.

Printed in

08647-90006

USA

March

1994

Notice.

The information contained in this document is subject to

change without notice. Hewlett-Packard makes no warranty of any kind

material, including but not limited to, the implied warranties

with

regard to this

of

merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

@

Copyright Hewlett-Packard Company 1994

All

Rights Reserved. Reproduction, adaptation, or translation without

is

prior written permission

prohibited, except

as

allowed under the

copyright laws.

CA,

1400 Fountaingrove Parkway, Santa Rosa

Reproduced with Permission, Courtesy

of

Agilent Technologies, Inc.

95403-1799, USA

Certification

Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements

are

traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.

Warranty

Regulatory

Information

The regulatory information is in Chapter

This Hewlett-Packard instrument product

4,

“Specifications.

is

warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be defective.

For warranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard. Buyer shall prepay shipping charges to Hewlett-Packard and Hewlett-Packard shall pay shipping charges to return the product to Buyer. However, Buyer shall pay

all

shipping charges, duties, and taxes for products returned to

Hewlett-Packard from another country. Hewlett-Packard warrants that its software and firmware designated

by Hewlett-Packard for use with an instrument

will

execute its programming instructions when properly installed on that instrument. Hewlett-Packard does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error-free.

LIMITATION

OF

WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.

NO

OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES

OF

MERCHANTABILITY AND FITNESS FOR

PARTICULAR PURPOSE.

EXCLUSIVE

REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HEWLETT-PACKARD SHALL NOT BE

ANY

LIABLE FOR CONSEQUENTIAL DAMAGES, WHETHER J3ASED

OR

TORT,

ANY OTHER LEGAL THEORY.

DIRECT, INDIRECT, SPECIAL, INCIDENTAL,

ON

CONTRACT,

A

OR

iii

Assistance

Product maintenance agreements and other custom assistance agreements are available assistance, contact your nearest Hewlett-Rzckard Sales and Semvice

Ome.

page.

&fer to the list

for

Hewlett-Rzckard products.

of

Sales and Sewice

mr

O~es

on the following

any

iv

Hewlett-Packard Sales and Service

Offices

US

FIELD

HEADQUARTERS

OPERATIONS

Hewlett-Packard Company

19320 Pruneridge Avenue

Cupertino,

95014,

USA

CA

(800) 752-0900

California

Hewlett-Packard

Co.

1421 South Manhattan Ave.

Fullerton,

CA

92631

(714) 999-6700 Hewlett-Packard

Co.

301 E. Evelyn

CA

Mountain View,

94041

(415) 694-2000

Colorado

Hewlett-Packard Co. 24 Inverness Place, East Englewood, CO 80112

(303) 649-5000

Georgia

Hewlett-Packard Co. 2000 South Park Place

GA

Atlanta,

30339

(404) 955-1500

Illinois

Hewlett-Packard Co. 5201 Tollview Drive Rolling Meadows, IL 60008 (708) 255-9800

New Jersey

Hewlett-Packard

Co.

150 Green Pond Road

NJ

Rockaway,

07866

(201) 627-6400

Texas

Hewlett-Packard Co. 930 E. Campbell Rd. Richardson, TX 75081 (214) 231-6101

EUROPEAN OPERATIONS HEADQUARTERS

Hewlett-Packard S.A. 150, Route du Nant-d'Avril

1217 Meyrin 2/Geneva Switzerland (41

22)

780.8111

France

Hewlett-Packard France

1

Avenue Du Canada

Zone D'Activite De Courtaboeuf

INTERCON OPERATIONS HEADQUARTERS

Hewlett-Packard Company

3495 Deer Creek Rd.

Palo

Alto, California 94304-1316

(415) 857-5027

Australia

Hewlett-Packard Australia 31-41 Joseph Street BIackburn, Victoria 3130

3)

(61

895-2895 F-91947 Les Ulis Cedex France

(33

1)

69 82 60

60

Canada

Hewlett-Packard (Canada)

17500 South Service Road

Germany

Hewlett-Packard GmbH Hewlett-Packard Strasse 6380 Bad Homburg v.d.H

Trans-Canada Highway Kirkland, Quebec H9J 2x8 Canada

(514) 697-4232 Germany (49 6172) 16-0

Japan Great Britain

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RGll

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England

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China

China Hewlett-Packard,

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Huan

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1)

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Singapore

Hewlett-Packard Singapore Pte. Ltd. 1150 Depot Road Singapore 0410 (65) 273 7388

miwan

Hewlett-Packard 'hiwan 8th Floor, H-P Building 337 Fu Hsing North Road 'Mpei, Taiwan (886 2) 712-0404

Ltd.

Co.

V

Safety

Notes

The following safety notes are used throughout this manual. Familiarize yourself with each of the notes and its meaning before operating this instrument.

Caution

Warning

Instrument Markings

Caution denotes not correctly performed or adhered to, would result in damage to or destruction until the indicated conditions are fully understood and met.

Warning denotes a hazard.

if

which, injury or loss of life. the indicated conditions

The following markings and caution and warning labels are used on the instrument. Be sure to observe all cautions and warnings.

Instruction The instruction documentation symbol. The product

Manual

not correctly performed or adhered to, could result in

a

hazard. It calls attention to a procedure that, if

of

the instrument.

Do

is

marked with this symbol when it

user to refer to the instruction in the manual.

Do

not proceed beyond a caution sign

It

calls

attention to a procedure

not proceed beyond a warning note until

are

fully understood and met.

is

necessary for the

A

Warning

The CE93 mark shows compliance with European Community 1993

standards.

The CSA mark is the Canadian Standards Association safety mark.

a

The ISM1-A mark is

1,

Group

Hazardous voltage always present in power cord connected to ac line.

Hazardous Voltage

Class A product.

symbol of an Industrial Scientific and Medical

this

area

with instrument

vi

Caution

General Safety Considerations

Warning

Hazardous electrical shock. Heat sink is live. Disconnect power supply before servicing.

No

operator serviceable parts inside. Refer servicing to qualified

To

personnel.

prevent electrical shock, do not remove covers.

Warning

Caution

If this instrument Hewlett-Packard may be impaired.

For continued protection against

only with same type and rating

other fuses or material

Always use the three-prong ac power cord supplied with this instrument. Failure to ensure adequate earth grounding by not using this cord may cause instrument damage.

is

used in a manner not specified by

Co.,

the protection provided by the instrument

fire

hazard replace line fuse

(3

A

250

V

type

F).

The use of

is

prohibited.

vii

How

Guide

to

Use

This

This guide

uses

the

following convention:

Documentation Description

(FRONT-PANEL

Display

This guide contains the information required to operate, calibrate, and repair the signal generator to the assembly level. Included are the following:

a quick overview of the signal generator examples of typical operation

rn

a reference section that describes

rn

explanations installation instructions

rn

tables of specifications theory of operation of the signal generator

rn

troubleshooting procedures to identify failed assemblies

KEY]

of

This represents a key physically located on

the instrument.

Text in this font represents FREQUENCY, MODULATION, and AMPLITUDE displays.

all

operation features

error messages displayed on the signal generator

replaceable part numbers adjustments required after repair or performance test failure performance tests to test the instrument

to

specifications

viii

The number of the currently selected sequence and the last register selected are always displayed in the lower left corner of the display to help you keep track of where you are in your testing process. The memory register examples provided in Chapter la, "Operation Examples," show you how to create a sequence and how to delete or add registers in your sequence.

Press

[MOD

ON/OFF)

Lm]

for modulating the RF output signal. These tones are also available

as

an

selected. Press audio source via the

or

output signal at the

to turn on or off the modulation source. Press

(-1

[m)

to select one of the internal source tones

MOD

INPUT/OUTPUT port when they are

or

[EXTI

MOD

INPUT/OUTPUT port.

to

ac- or dc-couple

two-digit register

To

recall the

an

external

(ikk + EXT

Press the internal (Additional internal plus external modulation capabilities are available for HP-IB operation.)

DC)

to frequency modulate the RF signal with

1

kHz tone and an external source

at

the same time.

Operation

1-3

la

Operation

metting

G

Started

Examples

Operation Examples

This section contains operating examples to help you learn how to

operate the signal generator. These examples can be performed

without any additional equipment.

If

this is the first time you have operated this instrument, perform each of the following examples for a quick introduction to general operation. After you have completed the examples, try operating the

own.

If

instrument’s remaining functions on your or want additional information on a function, refer to Chapter “Operation Reference.” understand, refer to Chapter

1.

Setting the RF Output Signal

2.

Incrementing or Decrementing the RF Output Signal

3.

Using the Memory Registers

4.

Offsetting the RF Output from a Reference

If

a message

IC,

is

displayed that

“Operation Messages.”

you have trouble

lb,

you

do not

5.

Holding the Output Attenuator Range

1

4

2

3

5

Operation Examples

la-1

Setting the Output

RF

Signal

Setting the Frequency

Setting the Amplitude

In this example, you level of the

1.

Set the frequency to

RF

will

set the frequency, amplitude, and modulation

output signal.

100

MHz

using the keys shown below the

instrument diagram.

If

you make a mistake while entering a value, press

it.

2.

Set the amplitude to

-100

dBm.

to correct

functl

.drw

la-2

Operation

Examples

funct2.dnv

Turn

on

the

RF

Output

3.

Press

@KjiEF]

RF

OFF

is displayed below the amplitude setting when the

output is turned

to turn on the RF output.

RF

off.

Setting the

Modulation

MODULATION

100.00000

4.

Set the The modulation rate is displayed below the deviation setting.

Use the MODULATION SOURCE keys when you

modulation source and turn modulation

FM

deviation to

MHz

3

kHz.

FM

-

3.00

on

kHz

or

wish

off.

AMPUTUDE

to select a

rlJnd3.dlw

Operation Examples 1 a-3

Incrementing or Decrementing the

RF

Output Signal

Preliminary Steps

In this example, you will increment the amplitude and frequency the RF output signal.

1.

If

they are not already set, set the frequency to

-100

amplitude to

dBm.

100

MHz,

and the

of

Using

the

Knob

FREQUENCY

2.

Increment the amplitude using Press or when you wish to adjust the increment resolution.

100.00000

-i

MHz

MODULATION

the

knob.

-

-101.0

AMPUT

Incrl.drw

dBm

la-4 Operation Examples

Using

the

Increment

keys

3.

Enter a frequency increment of

The $ symbol is displayed when you press

that the displayed value is the increment set value.

4.

Increment the RF output frequency in

25

kHz.

25

(-SET_)

kHz

to indicate

steps.

i

m

The increment keys affect the

(FREQUENCY, AMPLITUDE,

FREOUENCY

100.02500

-

MHz

last

FUNCTION selected

FM,

AM

or

9M).

MODULATION

-

AMPLITUDE

-101.0

.

dBm

J

incr4.d~

Operation

Examples

la-5

Using Registers

the

Memory

The memory register examples show you how to create a sequence registers, delete a register from that sequence, renumber the registers in the sequence, and insert a new register in the sequence.

of

Up to can contain up

300

in the sequences in any combination (such registers each, or 3 sequences of total does not exceed sequences each contain

10

register sequences can be-defined

to

100 registers

registers available in the instrument. The registers can be used

300 registers.

100

(00

through

100

registers

It

(0

through 9). A sequence

99).

There are a total of

as

10

sequences of

registers each)

is not possible to have all

as

that would be

as

long

1000

8,

30

as

the

10

registers.

tl

REG 99

-

300REG

J

1

a-6 Operation Examples

Saving

Settings

Instrument

in Register

Sequences

In this ten step example, you will use the memory keys to create

a sequence containing three registers. Each register will contain different frequency setting.

Selecting the Sequence

1.

Select sequence

If

there are registers saved in sequence 0, the message shown

in the display below example sequence

will

0

0.

will

not appear. Note that the steps in this

cause the settings in registers

to be changed.

00,

01,

and

02

of

regseql

a

.dm

(,,,I.]

Saving Settings

2.

Set the frequency to

3.

Save the instrument settings in register

in

Registers

10.00000

SEQ

0

REG

10

MHz

00

MHz.

00.

4.

Set the frequency setting to

11

MHz.

Operation

Examples

la-7

5.

Save the instrument settings in register

6.

Set the frequency to

12

MHz.

regseq4.d~

01.

regseq5.d~

1

a4

Operation Examples

7.

Save the instrument settings in register

02.

p-

Checking the Sequence

8.

Recall the registers in sequence The

a

which key

12.00000

SEQ

and

@J

was

10.00000

FREQUENCY

0

pressed

'-,

MHz

REG

02

keys recall registers or sequences depending

MHz

last

MODULATION

(m

0.

or

ISEQ_)).

-

AMPLITUDE-

on

regseq8.d~

Checking a Different Sequence

9. Select sequence

1.

Operation Examples 1 a-9

Note

10.

Step through the registers in sequence

1

if

there

are

registers

saved in it.

1

Sequence

does not contain the settings you saved in sequence

0. The instrument enables you to save different settings in each

sequence to create up to ten different sequences for your testing.

Remember when you save or recall

a

register, be sure that the correct

sequence is also selected.

SEQ

1

REG

00

req0.dnv

la-1

0

Operation

Examples

Deleting a Register

from

the

Sequence

In this example, created in the preceding example.

Selecting the Sequence

1.

Select sequence

you

0.

will

delete a register

from

the sequence

you

Note

\f

L

Deleting a Register

2.

Delete register

The contents of the register are recalled when allows

you

to resave the contents if

FREQUENCY

SEQ

01

FREQUENCY

0

from

'-

sequence

-

MODULAllON

0.

you

need to.

MODULATION

-

AMPLITUDE

it

is

deleted. This

AMP

1

d%lregO.drw

Operation

Examples

delregl

.drw

la-1

1

3.

Step through the remaining registers in sequence 0. The deleted register number has been removed from the sequence.

Note that the instrument does not renumber the registers when one is deleted.

delreg2.d~

1

a.12

Operation

Examples

Renumbering the

Registers in

Sequence

In this example, you

02

a

in sequence 0 caused when

will

eliminate the skip from register

Decreasing the Register Number

1.

Delete register

02.

you

deleted register

00

to register

01

in the previous

The settings saved in register

2.

Save the settings from register

02

are recalled when it

02

into register

01.

is

deleted.

numseql

.drw

Operation Examples la-13

Checking

3.

Step through the register sequence.

the

Sequence

Note

12.00000

In this example, you renumbered one register. When you need to renumber two or more registers, use instead

each register until you get to the last register in the sequence, then use

(DELI.

MHz

10.00000

SEO 0 REG

MHz

00

of

a

to recall

la-14 Operation Examples

Inserting a Register

a

Sequence

In this example, you

in

will

insert a register into the sequence you created in the previous example. The process involves incrementing each register number that comes after the point in the sequence where you wish to insert

1.

Recall the

last

register in sequence

a

register.

0.

12.00000

SEQ 0 REG

2.

Save the recalled settings into register

3.

Recall register Register

register

01

can now be used to save the settings that are saved in

00.

MHz

01

00.

02.

J

imeql

.dm

insseu2.d~

10.00000

SEQ 0 REG

MHz

00

Operation

Examples

la-15

4.

Save the recalled settings into register

01.

Register

00

can now be used to save the new settings.

Saving a New Register

5.

Set the frequency to

8

insseq4.d~

MHz.

6.

Save the settings Press

a

to check the new sequence.

in

8.00000

SEQ

0

REG

register

MHz

00

00.

la-16

Operation Examples

Offsetting the Output from

RF

a

Reference

Setting the Reference

Value

I1

In this example, reference value, below the reference value.

1.

Set the frequency

you

will enter

and

then offset the RF output frequency

to

500

an

RF output frequency, set it

MHz.

10

as

MHz

the

q@

0

0000

/

u-

2.

Set

500

The mode

500.00000

MHz

1

ref1

MHz

as the reference frequency.

A

symbol appears in the display to indicate that the reference

is

selected. The output frequency is

still

500

MHz.

.dnv

Operation

Examples

la-17

Offsetting the

output

RF

3.

Offset the output frequency frequency.

You can enter in the offset value directly, or use the knob or and

a

keys.

10

MHz

below the reference

Attention!

In the reference mode, the output frequency equals the reference

k

frequency

Turning

4.

Turn-off the reference mode to display the actual output frequency.

5.

Turn-on the reference mode without changing the reference frequency.

the displayed offset frequency.

the

Reference

490.00000

Mode

MHz

Off

or

On

la-1

8

Operation

Examples

FREQUENCY

-

1O.OOOOOnMHz

1-

MODULATION

-

AMPLITUDE

6.

Change the displayed units to

kHz.

Note that for amplitude, reference settings are displayed in dB units only.

Setting a New Reference

7.

Set the current output frequency as the new reference frequency

at

any

time.

Value

ref7.d~

Operation Examples

la-19

Holding

the Output

Attenuator

Set the Amplitude

Holding the

Attenuator

Range

Level

In this example, you will hold the output attenuator change ranges when you change the amplitude setting. This prevent attenuator range changes

1.

Set the amplitude level

to

-82

from

affecting the output signal.

dBm.

I

2.

Hold the attenuator at this setting.

so

-82.0

it does not

dBm

will

am1

drw

\f

FREOUENCY

\

-

MODULATION

-

-82.0

AMPLITUDE

dBm

HOLD

J

la-20

Operation

Examples

Adjusting the

Amplitude

3.

Adjust the amplitude setting.

Now

amplitude changes do not cause the attenuator to change its range setting. Consequently, amplitude changes are limited to the range provided by the instrument's vernier. For information about the instrument's vernier ranges, refer to Chapter lb, "Operation Reference.

'

Operation Examples la-21

Ib

Operation

Reference

This chapter describes each of the instrument’s functions including all of the front panel keys, the rear panel connectors, and the optional remote interface and memory interface. This information is presented in the same functional groups groupings.

as

the front panel key functional

Operation Reference

1

b-1

Frequency/Amplitude

Frequency and Amplitude

1

2

3

4

ireq

keys.dm

2.

Digit-Select

1.

Knob

Arrow

Note

Keys

The knob and reference set keys work similarly for both frequency and amplitude.

Turn the knobs to increment or decrement the frequency and amplitude settings. The knobs are always active when the instrument is in local operation.

Press these digit-select arrow keys changed with the knob.

The knobs increment the selected digit only. For information about

an

incrementing by

“Increment Set” in this chapter.

arbitrary value using the increment set keys, see

(@

a)

to select the digit to be

lb-2

Operation

Reference

3.

REF SET

Frequency/Amplitude

Press

[REF)

RF

output setting

is stored in non-volatile memory until you replace it by pressing

(REFSET)

to turn on the reference mode and to set the current

as

the reference value. The reference value

again.

4.

REF ON/OFF

Output

Trouble?

Power

When you press value and the units. When the offset between the reference value and the

The

RF

output signal is not changed when you press this key.

(-SET),

the A symbol is displayed between the

A

appears, the displayed value indicates

RF

output signal.

Units

When you press

or

kHz.

For

units provided, but they are displayed in dB only.

Press

[REF

on the reference mode without changing the reference value. When you turn on the reference mode, the displayed value indicates

the offset between the reference value and the current setting.

The

RF

output signal is not changed when you press this key.

If

the

RF

output power seems too low, look for A in the display between the power level value and the dB indicator. The that reference mode is turned on. The displayed value is output power level; the output power. can then reset the output power to the desired level.

(REF]

amplitude, values can be entered in any

ON/OFF] to turn off the reference mode

To

for frequency, values can be entered in

it

is the offset between the reference value and

exit

the reference mode, press

of

the amplitude

if

it is on,

RF

CREF

MHz

or

to

turn

output

A

tells you

not

the

ON/OFF~.

You

Operation

Reference

1

b-3

Function

1

1.

FREQUENCY

2.

AMPLITUDE

3.

FM

AM

4M

The RF output frequency range is making frequency changes, the instrument does not turn

output.

Frequency switching typically takes less than

conditions occur for changes which cross the instrument’s two

frequency band edges

The RF output amplitude range is -136 dBm to

over-range to instrument does not turn provides rapid amplitude changes. The period of any over- or under-ranging that may occur during level transitions is typically less than 30 ms.

IFM_)

Press use the data entry keys to enter the desired value of deviation. The values allowed depend on the RF frequency selected. See Chapter

“Specifications” for peak deviation specifications.

IAM)

Press entry keys to set the desired value of range. Values from

100% are allowed. Press

@KJ

the data entry keys to enter the desired value of deviation. The

values allowed depend on the RF frequency selected. See Chapter

“Specifications” for peak deviation specifications.

+

13 dBm. When making amplitude changes, the

to set the peak deviation for frequency modulation. Then

to set the amplitude modulation range. Then use the data

to set the peak deviation for phase modulation. Then use

(249

off

MHz and

250

kHz to 1000 MHz. When

off

the RF

120

ms. Worst case

501

MHz).

+

10 dBm with

the RF output. The electronic attenuator

4,

0

through

4,

lb.4

Operation Reference

Increment Set

INCREMENT

1.

INCR

Note

SET

incrkays.dw

Press

(INCR-J

currently active function (the active function is the you press; press

@FETSET),

indicates that the displayed value is the increment set value. An increment value cannot be set for the knobs or the memory recall

arrow keys.

to view or change the increment set value for the

last

I-],

fJ

[-I,

is displayed between the value and the units. The

m,

m),

or

m).

function key

When

you

$

Note

Function

Frequency Amplitude FM Deviation

AM

Depth

4M

Deviation

It

is possible to set an increment value of greater resolution than can be displayed or than the hardware can respond to. However, the instrument records each arrow key press and appropriate number

of

presses.

1

Hz

to

999.75

>

0.0 to 149.0 dB

>

0.0 to 100

>

0.0

to

100%

>O.O

to

10.0

Range

MHz

kHz

Radians

will

respond after the

Operation Reference

lb-5

Data

1

2

4

1.

MHz/dJ3m

Note

2.

Backspace

3.

emf

Press a units key after you enter a value. This terminates the entry. Note that the units keys in the left column are each labeled with an

amplitude unit on the bottom and a frequency or modulation unit on the top. The instrument applies the appropriate unit for the function value you are entering. The bottom key in the row for instance,

q5M

terminates a Memory register selections, sequence selections, and HP-IB address

entries do not require a units key to terminate the entry. These entries are automatically terminated after the last digit is entered.

entry in radians or an amplitude entry in dBpV.

~~ ~~ ~

Units Conversion

You

can change the units of the displayed frequency or amplitude value by selecting the FUNCTION (frequency or amplitude) and then pressing a units key. The instrument will convert the displayed value

to the equivalent value for the units key you pressed.

Press

[--1

when entering a numeric value to backspace and remove

the last digit entered.

Press these keys to display the amplitude value indicated on the key label in electromotive force units. Emf is the RF output voltage with no load.

It

is twice the output voltage with a

50

ohm load.

1

b-6

Operation

Reference

4.

Press this key at any time while you are entering an amplitude or reference offset value to change the sign of the value.

Instrument Preset

(E)

(m)

Note

(DEL)

Turn the instrument on while pressing the backspace key

an

perform factory-defined settings-shown in the following table. Save &d recall registers are not affected by this operation.

Turn the instrument on while pressing the memory perform a clear memory. This function erases sets the where the instrument powers up to factory-defined settings shown in the following table.

This

will

627

Battery

instrument preset. The instrument

HP-IB

cause

RAM

address to

an

error message to appear on the display:

failure: memory lost.

19,

and performs an instrument preset

will

power up to

(DEL)

all

savehecall registers,

This is normal.

(@)

key to

to

Operation Reference

1

b-7

Instrument Preset

Instrument Preset Settings

4M

I

Reference

Increment

Input

Frequency

coupling

I

0.0

MHz

0.1%

Internal

I

1

b.8

Operation Reference

Attenuator

Deviation

Increment

coupling

1.0

0.1

radians radians

Off

1.

ADRS

i=

1

2

Press

(ADRS]

second line of the FREQUENCY display.

To

change the address, press

example, enter

to view the instrument's HP-IB address setting in the

(ADRS)

01

to set the address to

hplbkeya.dm

and a two-digit number. For

1.

2.

LOCAL

Acceptable HP-IB addresses are

Press

(J5'CT)

has been set for remote (HP-IB) operation. The will replace the HP-IB status indications in the second line of the

FREQUENCY display when the instrument is returned to local

operation.

to return to front-panel operation when the instrument

00

through

30.

SEQ

and

REG

fields

Operation

Reference

lb-9

Memory

MEMORY

The memory keys allow you to save instrument settings into memory registers and recall the registers in a numeric sequence.

10

Up to can contain up to

300

in the sequences in any combination (such registers each, or 3 sequences of total does not exceed sequences each contain

register sequences

100

registers available in the instrument. The registers can be used

300

goo

can

be defined

registers (00 through 99). There are a total of

100

registers.

100

registers

It

(0

through 9). A sequence

as

10

sequences

registers each)

is

not possible to have all

as

that would be

as

long as the

1000

of

30

10

registers.

n

SEQ

\I

9

MEMORY last

digit. Register key entries

digits. Sequence key entries

REG

-

key entries are automatically terminated after you enter the

99

(

@,

(m)

300

REG

(DEL),

and

m),

require one digit.

require two

1

b.10

Operation Reference

Memory

1.

Note

SAV

2

Press

(SAVI

operating settings in except the knob digit positions and the HP-IB address will be saved in the register.

When you press the total number of registers still available.

When you save a register, sequence. (The number of the selected sequence appears in the second line of the FREQUENCY display.) You can only recall a register

when the sequence (Refer to

The instrument does not have a copy function for saving registers from one sequence to another.

3

and a register number

a

memory register.

(SAVI

key, a message is displayed to tell you the

it

is assigned to is selected.

“4.

SEQ” for further information about register sequences.)

(00

through 99) to save the current

All

front-panel settings

is assigned to the currently selected

Operation

Reference

lb-11

Memory

2.

REG

Press

CREGJ

and a register number

operating settings saved in that register.

(00

through 99) to recall the

3.

Register Recall

Arrows

The number of the with the number of the currently selected sequence.

You can only recall registers from the currently selected sequence.

To

recall a register from another sequence you must first select the

sequence using the key.

The recall

registers. The last key pressed affected by the arrow keys.

(Refer to

f&)

“4.

last

register recalled appears in the display along

and

SEQ”

keys can be used to select sequences or recall

(SEQ

or REG) determines which field is

for further information about register sequences.)

lb-12

Operation

Reference

4.

Note

SEQ

Memory

memkeyl

.drw

4

Press

(SE91

and a sequence number sequence. When you select a sequence, the number of the sequence appears in the display along with the number

saved in the sequence. The instrument is set to the operating settings

saved in the first register.

If

no registers have been saved in the

sequence, a message is displayed to let you know.

~ ~

Selecting the sequence you are currently in is a quick way to return to the beginning of the sequence.

(0

through

9)

to select a register

of

the first register

A

sequence can include up to

300

are a total of

registers available in the instrument.) Registers are

100

registers

(00

through

99).

(There

automatically assigned to the currently selected sequence when they are saved.

The registers saved in any given sequence are independent from the registers in any other sequence. This allows you different register sequences. Consequently, it

is

possible to have up

to ten registers with the same number (for example,

create

REG

up

01)

to

10

each

to

assigned to a different sequence and each with different operating settings saved in it.

Operation Reference

lb-13

Memory

5.

DEL

Press

(DEL)

and a register number register. The specified register is deleted from the currently selected sequence only; registers in other sequences you have set up are not affected. After you have deleted a register, you recall that register number until you have saved operating settings in it again.

(00

through

99)

to delete that

will

not be able to

Note

The register number is immediately deleted from the sequence when the delete entry is completed. However, the settings contained in the register are recalled when you delete the register the settings

if

you need to.

so

you can re-save

Renumbering the Registers

If

you use the arrow keys to recall the registers in sequence, the

If

deleted register number will be skipped.

so

skip, you can do register back one register number. To delete

delete each register in the sequence.

by moving each register following the deleted

you wish to eliminate the

an

entire sequence,

lb-14

Operation Reference

Modulation Source

Modulation

Source

Modulation Source Paths (the

1

kHz

path is highlighted)

blkdag.drw

Operation Reference

lb-15

Modulation Source

modskeys.dm

\

b-

MODULATION \ SOURCE

1. MOD

2.

INT400Hz

INTlkHZ

3.

ON/OFF

EXTAC EXT DC

4'

Press (MOD mode (AM, FM, or $M). MODULATION display when modulation is turned

This key also turns on or INPUT/OUTPUT connector when an internal source is selected. The operation of key on the HP 83300A Remote Interface.

Press one of these keys to select an internal source for modulating the carrier. The selected source is also output at the

as

port

Press one of these keys to configure the an ac- or dc-coupled input for modulating the carrier.

Calibrated modulation requires For audio source frequencies of less than will appear in the second line level of the source is not within approximately

a 1 Vpk signal into

Acceptable Frequency Ranges for

2

ONIOFF)

3

to turn on or

OFF

appears in the second line

off

the audio output at the

this

60061.

an

of

Source

5

off

the currently-selected modulation

of

the

off.

MOD

(400

Hz

or 1 kHz)

key is the same

MOD

audio source

10

the MODULATION display when the

as

the

[MOD

ON/OFF)

MOD

INPUT/OUTPUT

INPUT/OUTPUT port as

of

1

Vpk into

kHz, a

an

HI

or

&5%

of

External Audio

1

Vpk.

LO

600hl.

indicator

1

b.16

Operation Reference

Modulation

4M

FM,

AM

Coupling Range

20

DC

20

Hz

to

Hz to

EXT EXT EXT

1

EXT

AC

DC

AC

DC

to

75

kHz

25

kHz

i

4.

1

kHz

+

EXT

DC

Modulation

Press

[I

kHz

+

EXT

DC)

to configure the

DC

coupled input for modulating the carrier along with the internal

MOD

INPUT/OUTPUT port

kHz source.

Source

as

a

1

Note

(Refer also to

“3.

EXT

AC

EXT

DC”

for further information about

operation and acceptable ranges.)

1

kHz + EXT

AC,

400

Hz + EXT

DC,

and

400

Hz + EXT

AC

are

available only via HP-IB.

Setting

the

Modulation

Level

When modulating with both an internal and external source, the

of

level

the external source should not exceed 0.5 V peak or

This level will provide one half of the displayed modulation.

0.5

To

Vdc.

set

modulation to the level you desire, set the displayed modulation to

set

to

0.5

V

two-thirds of the desired setting. The external source, peak or setting (one-half

For example, to set up the modulation for the instrument for peak,

If

0.5

Vdc,

will

provide the additional one-third of the desired

of

the instrument’s setting).

2

kHz of

will

provide another 1 kHz of deviation.

FM.

The external source, set to

the external source is set to less than

3

kHz

of

FM deviation, set

0.5

V

peak, the modulation

level provided by the source will be less than one-half

of

the

displayed resolution. The following equation may be helpful for determining the appropriate modulation level setting for the instrument when the level of the external source is less than

0.5

V.

Where:

A

=

E

=

D

=

For example, to set up for source set to would be:

5.

MOD

IN~UT/OU~~

This port outputs a 1 Vpk (into

modulation source is selected coupling is selected the input for a preceding table for acceptable audio ranges.)

-=

AD

l+E

Actual modulation level External source level Displayed modulation level

3

kHz of FM deviation with an external

0.3

V

peak, the instrument’s displayed modulation level

3kHz = 2.3kHz

1

+

0.3V

6000)

(400

(c-1,

1

Vpk (into

[ETET]

600Q)

audio tone when an internal

Hz or 1 kHz). When external

or

[I

kHz

+

EXT

DC)), it provides

audio source. (Refer to the

Operation

Reference

lb-17

RJ?

Output

RF

OUTPUT

1.

2.

RF

ON/OFF

ATTN

HOLD

2’

Press

I-)

appears in the second line of the AMPLITUDE display when the output signal is

The instrument turns maximum output attenuation its lowest setting. This results in approximately isolation.

Press

(-1

setting. when the attenuator hold function

When the attenuator hold function is on, amplitude adjustments are limited to the range

0.1 dB per step adjustment resolution across its specified

Vernier

The following table upper and lower limits of each vernier range. The instrument’s

amplitude setting when you press the

which vernier range is used.

HOLD

Ranges

to

turn the RF output signal on or

off.

off

to

hold the electronic step attenuator at its current

appears in the second line

of

the instrument’s vernier. The vernier provides

(10

3’

off.

RF

OFF

the output signal by switching in the

(130

dB) and setting the vernier to

170

dB of carrier

of

the AMPLITUDE display

is

on.

10

dB range.

dB Specified Vernier Ranges) provides the

c-)

key determines

1

b.18

Operation

Reference

is

The vernier limits shown in the table when amplitude settings that exceed the limits may not provide output levels that are within the accuracy specifications

allowed

to

over-range and under-range beyond the

(ATTN]

is selected. However,

of

the instrument.

10

Range

dB

Specified Vernier Ranges

Upper

and

Lower Limits

+

1

2

3

4

5 6 7

8

9

10

11

12 13 14

10.0 dBm

-6.0 dBm

-16.0 dBm

-26.0

-36.0

-46.0

-56.0 dBm

-66.0 dBm

-76.0 dBm

-86.0 dBm

-96.0

-106.0

-116.0

-

126.0

dBm

to to

to

-5.9 dBm

to

-15.9 dBm

to

-25.9 dBm

to

-35.9 dBm

to

-45.9 dBm

to

-55.9 dBm

to

-65.9 dBm

to

-75.9 dBm

to

-85.9 dBm

to

-95.9 dBm

-105.9

-115.9

-125.9

-

136.0

dBm

dBm dBm

dBm

RF

output

3.

RF

OUTPUT

Caution

The RF output port is reverse-power protected to

500.

When the instrument senses a reverse-power signal, it turns the

off,

RF output

vernier to its lowest setting.

the step-attenuator to maximum attenuation, and the

A

message appears in the second line of

50

W

or

25

Vdc into

the display when the reverse-power protection has been activated. After

you

have removed the reverse-power signal from the RF output,

press the

Applying a signal source exceeding

1-j

key to turn the output signal on again.

50

W

or

25

Vdc into

509

to the RF output port or maintaining a signal source at the RF output for an extended period

of

time may damage the instrument.

Operation

Reference

lb-19

Rear

Panel

Operation

Rear

1.

10

Panel

MEtz

and

REF

OUTPUT

I'

INPUT

23

These connectors provide the input and output ports for the instrument's timebase reference. The instrument will lock to

5

MHz,

or 10

MHz

that is within output connector provides a

4

external reference source connected to the input

f5

ppm. When the internal timebase is being used, the

10

5

MHz,

6

1

Vrms level signal.

a

2

MHz,

2.

DISPLAY

CONTRAST

This knob controls the front-panel display contrast. Display contrast

can be optimized for viewing the display from above, below, or

directly in front

of it.

lb-20

Operation

Aeference

Rear

Panel

Operation

5.

3.

AUXILIARY INTERFACE

4.

Line Voltage

Connector

HP-IB

Connector

Connect the HP 83300A Remote Interface or the HP 83301A Memory Interface to this connector for operation with the instrument. Refer to “Remote Interface” and “Memory Interface” in this section for information about operating these devices.

TX

Data (output)

+5

Volts

Ground

CTS

(input)

For information about the line voltage connector or fuse replacement, refer to Chapter

This

is

an IEEE 488.1-1987 connector for controlling the instrument

via

an

external controller. For information about HP-IB operation of

the instrument, refer to Chapter 2, “HP-IB Programming.

3,

“Installation.”

\

RX

Data (input)

RTS

(output)

’

6.

TIMEBASE

ADJUST

and

Help

&,itches

Position one of this switch (labeled “TIMEBASE the instrument in the timebase adjustment mode. For the timebase adjustment procedure, refer to Chapter 7, “Adjustments.

Position two of this switch (labeled “NOT

off

allows you to turn

001

002 004

005

006

007

008

010

011 012 013

014

For more information about these messages, refer to Chapter IC,

“Operation Messages.

No external dc coupling Modulation exceeds deviation range

Invalidunits selection

Increment value entry out of range End of increment range Entered value out Amplitude exceeds specifiedrange End of knob range Amplitude exceeds No external dc coupling

AM

unspecified above 4 dBm

AM

unspecified

the following error messages:

for

PM

of

range

ATTNHOLDlimits

for

AM

at

or

below

”

1.5

ADJUST”)

USED”)

MHz

places

’

is the switch which

Operation Reference

lb.21

Remote

Interface

Remote Interface

(Accessory)

1

AUXILIARY

INTERFACE

2

3

1.

MOD

2.

RF ON/OFF

ON/OFF

4

Press

[MOD

ON/OFF)

external) LED above the key is instrument’s MODULATION display.

This key also turns on or

INPUT/OUTPUT port when an internal source selected.

Press (-) to turn the RF output signal on or output signal is turned appears in the second line

There is approximately

Off.

to

the RF carrier. When modulation is turned

to turn on or

off

and

OFF

off

the audio output at the

off,

the

LED

of

the instrument’s AMPLITUDE display.

170

dB

of

off

all modulation (internal and

appears in the second line

(400

above the key is

carrier isolation when the output is

off,

MOD

Hz

or INT

off.

When the RF

off

and

the

of

RF

the

1

kHz)

is

OFF

lb-22

Operation Reference

3.

Sequence Selection

Arrows

4.

Register Recall

Arrows

Remote Interface

Press

a

or

a

to select the next or previous sequence of registers.

of

The sequences are selected in numeric order. The number selected sequence appears in the second line of the FREQUENCY display. When a sequence is selected, the first register in the sequence is recalled. When a sequence is selected that has no registers saved in

(-

-)

will

it, two dashes

a

to recall the operating settings saved in the registers

Press in the currently selected sequence. The number of the last register

accessed appears in the REG field.

If

two dashes

registers saved in it After the last register in the sequence has been recalled, the register

count will begin again at the first register saved in the sequence. (Refer

register sequences.)

or

(-

-)

to

"MEMORY" in this section for further information about

appear in the REG field.

appear in the REG field, a sequence that has no

has

been selected.

the

Operation Reference

1

b.23

Memory Interface

(Accessory)

AUXIURY

INTERFACE

1.

POWER

This light indicates that power It should light when the cable

is

being supplied to the

is

connected to the AUXILLARY

HP

83301A.

INTERFACE connector on the rear panel of the instrument. If it does

to

not light, refer

Chapter 5b, “Troubleshooting Information.

”

lb.24

Operation

Reference

Memory Interface

2.

Copy

Arrow

Note

3.

Keys

BUSY

Press these keys the instrument and the HP 83301A. After the instrument has successfully completed the copy, it will display a message to let you know.

Making

When the HP 83301A is connected to the instrument, press the copy all of the memory registers saved in the instrument into the HP 83301A's memory. After you have pressed also press the copy process. Press the HP 83301A into the instrument's memory.

Copying memory into the instrument existing memory registers in the receiving device to be erased. It does not effect the memory in the sending device, however.

This light is turned on while memory registers are being copied from

one device memory interface while this light is on may cause the memory data to be corrupted. The light will turn

If

the Busy light flashes for a few seconds and then turns off, the instrument did not find valid memory register data in the memory interface. If the Busy light continues to at all after an arrow key and the

Chapter 5b, "Troubleshooting Information.

a

to

initiate a copy

of

the memory registers between

Copy

an

arrow key, you must

(SAV)

key

on

the instrument's front panel to begin the

to

copy the memory registers stored in the

or

the HP 83301A causes any

to

another. Attempting to operate the instrument or

off

when the copy is complete.

flash,

or

if

it does not turn on

ISAV)

key have been pressed, refer to

@)

to

Operation

Reference

lb-25

IC

Operation

Front Panel Operation Messages

Messages

This chapter provides descriptions for both front panel and HP-IB

operation messages. (For information about service messages, numbered Messages.

500

and above, refer to Chapter

SEQ

X

SAVE

- -

XXX

registers available

This message is displayed when the

inform you of how many registers are still available. a register is available, enter the two-digit number of the

register you wish to save.

SEq

XREG--XXhas not beensaved

This message is displayed when an attempt is made to recall a register that has not been saved in the sequence. Check to be sure that the appropriate sequence is selected and that you have entered the correct register number.

SEQ

XDEL--Enternumberto delete

5c,

"Service Error

key is pressed to

If

001

This message is displayed when the Enter the number of the memory register you wish to delete. When a register is deleted, the settings saved in it are erased and the register number is removed from the sequence.

SEQXhasnoregisters savedinit

This message is displayed when a sequence is selected that has no registers saved in it. the sequence, set-up the instrument, press the

enter a two-digit register number.

No

externaldc coupling

This message is displayed when PM

(EXTDC)

of an external source is not possible for PM.

(1

kHz

Or, select external modulation capabilities (such are available through HP-IB control to Chapter

+

or

(1

kHz

+

EXT

DC]

you

will

[EXT]

2,

coupling for PM. Additional internal plus

"HP-IB Programming.

If

for

DC)

is also selected.

actually get 1 kHz and external

(DEL)

key is pressed.

you wish to save registers in

ISAV)

key, and

PM

is

selected and

DC

coupling

If

you press

ac.

as

[I

kHz

+

EXT

AC))

of

the instrument; refer

Operation Messages

1c.l

002

Modulation exceeds deviationrange

This message is displayed when modulation is set to a level

of

that exceeds the operating range

the instrument. This

condition occurs when a modulation level is entered that is

or

out-of-range for the current RF frequency setting,

when the RF frequency setting is changed and the modulation setting is out-of-range for the new setting.

003

004

005

006

There areno registers available

This message is displayed when an attempt

is

made to save a memory register and all of the instrument’s memory registers have already been used. Delete

any

unneeded registers in order to save new ones. Deleting registers from any sequence

will

make them available for saving new

settings in the sequence you are using.

Invalid units selection

This message is displayed when a units key is pressed that is not valid for the active function. Check that the units key you select is labeled with the appropriate units for the value you are entering.

Increment value entry out of range

This message is displayed when the

LSET)

key is pressed and a value is entered that is not within the increment value range for the active function. Refer to “Increment Set” in Chapter lb, “Operation Reference,” for a listing

of

the increment value ranges.

End of increment range

or

@)

This message is displayed when the

increment arrow key is pressed and the increment value does not set the instrument to a setting that allowable range. To view press the Chapter

(-SET_)

lb,

“Operation Reference, ” for a listing of the

or

key. Refer to “Increment Set’’ in

is

within the instrument’s

change the increment value,

increment value ranges.

lc.2

Operation Messages

007

008

010

Enteredvalueoutof range

This message is displayed when a value is entered that does not set the RF output signal within the instrument’s allowable range. Refer to “Function” in Chapter

lb,

“Operation Reference, ” for information on the instrument’s allowable ranges.

Amplitude exceeds specified range

This message is displayed when the instrument’s amplitude

+

is set to a level that exceeds

End

of

knob range

10 dBm.

This message is displayed when the knob is turned but

changing the selected digit would set the instrument to a value that is not within its allowable range.

01

1

Amplitudeexceeds

ATTNHOLDlimits

012

013

014

This message is displayed when

to

amplitude is set

limits by greater than

a level that exceeds the vernier range

5

dBm. Exceeding the 10 dB vernier

[-HOLD)

is on and the

range of an attenuator hold setting causes the output level accuracy to degrade. For information about the vernier ranges and limits, refer to “Atten Hold” in Chapter

“Operation Reference.

No

externaldc coupling for

This message is dimlaved when

~EXTDC)

or-ci

kHz

of an external source is not possible for

kHz

+

EXT

DC)

Or, select

CEXT)

external modulation capabilities (such are available through HP-IB control

2,

to Chapter

AMunspecifiedabove4dBm

“HP-IB Programming.”

This message is displayed when

”

AM

is selected and

+*EX+

YOU

DC)

is

also

selected.

AM.

DC

If

will actually get 1 kHz and external

coupling for

AM.

Additional internal plus

as

1

kHz

of

the instrument; refer

AM

is selected and

amplitude is set to greater than 4 dBm. To insure that

will

meet its specified performance, reduce the amplitude

4

setting to

AMunspecifiedatorbelow1.5MHz

dBm or less.

lb,

coupling

you press

+

EXT

AC)

AM

UC.

015

020

02

022

1

This is caused when to 1.5

MHz

or less.

AM

is

To

insure that

selected and

AM

will meet its specified

RF

frequency is set

performance, increase the RF frequency setting.

Help messages off

This message is displayed when the instrument is powered up and the rear panel help switch has been set to disable the following error messages:

007, 008,

010,

011,

012,

position (next to the timebase adjust, labeled

001

013,

,

002,

004 , 005

014.

The second switch

“NOT

,

006

,

USED”)

controls the display of these messages.

Press

This message is displayed when the

lsAVl

to copy memory

FROM

8647/8

(IJJ

key is pressed on an

HP 83301A Memory Interface connected to the instrument.

key

to

Press the

copy the memory registers saved in

the instrument into the memory interface.

Copyingregistersfrom8647/8

This message is displayed while the memory registers are being copied from the instrument to the HP 83301A Memory Interface.

Press(SAV)to copymemory

This message is displayed when the key

TO

8647/8

is

pressed

on

an HP 83301A Memory Interface connected to the instrument. Press the key to copy memory registers that had been saved in the memory interface into the instrument.

Operation

Messages

le-3

023

Copyingregistersto

8647/8

024

025

02

6

This message

is

displayed while the memory registers are being copied from the HP 83301A Memory Interface to the instrument.

Invalid

This message

data

in Memory Interface

is

displayed when the instrument detects that the HP 83301A Memory Interface does not contain valid memory register data. Try copying a memory register into the memory interface first, then initiate a copy from the memory interface

Communication failure : copy aborted

to

the instrument again.

This message is displayed when the instrument is not able to successfully copy memory registers between the instrument and the HP 83301A Memory Interface. This message be displayed if the cable connecting the instrument

will

to

the

primary interface is disconnected during the copy process.

Memorycopywas successful

This message

is

displayed when the instrument has successfully copied the memory registers between the instrument and the HP 83301A Memory Interface. When this message is displayed, the copy process

is

complete and you can disconnect the memory interface from the instrument.

Ic.4

Operation

Messages

HP-IB

-

Command

-101

Invalidcharacter

Errors

-102

-103

-104

-105

A

syntactic element contains a character which is invalid for that type; for example, a header containing an ampersand, SETUP&. This error might be used in place errors

Syntax error

An unrecognized command or data type was encountered. For example, a string was received when the not accept strings. Additional information is available over HP-IB.

Invalid separator

The parser was expecting a separator and encountered an illegal character. For example, the semicolon was omitted after a program unit, 'EMCl:CHl:VOLTS5.

Data

The parser recognized a data element different than one allowed. For example, numeric or string data was expected but block data was encountered.

GET

A

message (see

-121,

-141, and perhaps some others.

device

type error

not allowed

Group Execute Trigger was received within a program

IEEE

488.2.7.7).

of

does

-108

-109

-111

-112

-113

Parameter not allowed

More parameters were received than expected for the header. For example, the *EMC common command only accepts one parameter,

Missing parameter

Fewer parameters were received than required for the header. For example, the *EMC common command requires one parameter,

Header separator error

A

character which is not a legal header separator

encountered while parsing the header. For example, no white space followed the header, thus error.

Programmnemonictoo long

The header contains more than twelve characters (see

so

receiving *EMCO,l is not allowed.

receiving *EMC is not allowed.

*GMC"MACRO"

was

is in

IEEE

488.2 7.6.1.4.1).

Undefinedheader

The header is syntactically correct, but it is undefined for this specific any

device.

For example,

*XYZ

is not defined for

Operation

Messages

lc-5

-121

Invalid character in number

An invalid character for the data type being parsed was encountered. For example, an alpha in a decimal numeric or a

“9” in octal data.

-123

-124

-128

-131

-134

-141

Exponent too large

The magnitude

IEEE

488.2, 7.7.2.4.1).

Too

many

of

digits

the exponent was larger than 32000 (see

The mantissa of a decimal numeric data element contained

IEEE

more than 255 digits excluding leader zeros (see

488.2

7.7.2.4.1).

Numeric data not allowed

A

legal numeric data element was received, but the

device

does not accept one in this position for the header.

Invalid suffix

The suffix does not follow the syntax described in

488.2 7.7.3.2,

Suffixtoo long

The suffix contained more than

or the suffix is inappropriate for this

12

characters (see

IEEE

device.

IEEE

488.2, 7.7.3.4).

Invalid character

data

Either the character data element contains an invalid character or the particular element received is not valid for the header.

-

144

-148

-158

-168

-178

Character data too long

The character data element contains more than twelve

IEEE

characters (see

Character

A

legal character data element was encountered where

data

prohibited by the

String data not allowed

A

string data element was encountered but was not allowed

by the

Block

A

device

data

legal block data element

at

not allowed

allowed by the

Expression data not allowed

A

legal expression data was encountered but was not

allowed by the

488.2 7.7.1.4).

not allowed

device.

this point in parsing.

was

encountered but was not

device

at this point in parsing.

1

c-6

Operation

Messages

HP-IB

Errors

Execution

-22

1

-222 Data out of range

Settings conflict

Indicates that a legal program data element was parsed but

could not be executed due to the current device state (see

IEEE488.2 6.4.5.3

Indicates that a legal program data element was parsed but could not be executed because the interpreted value was outside the legal range

488.2, 11.5.1.1.5).

and

11.5.1.1.5).

as

defined by the

device

(see

IEEE

HP-IB

Device-Specific Errors

HP-IB

Query

Errors

-330 Self

-350 Queue overflow

-410

-420

-430

-test

A

specific code entered into the queue in lieu of the code that caused the error. This code indicates that there is no room in the queue and an error occurred but was not recorded.

Query INTERRUPTED

Indicates that a condition causing an INTERRUPTED Query

error occurred (see query followed by DAB or completely sent.

Query UNTERMINATED

Indicates that a condition causing an UNTERMINATED Query error occurred (see IEEE the

device

program message was received.

Query DEADLOCKED

failed

was addressed to talk and an incomplete

IEEE

488.2, 6.3.2.3).

GET

For example,

before a response was

488.2, 6.3.2.2).

For example,

a

-440

Indicates that a condition causing a DEADLOCKED Query error occurred (see input buffer and output buffer are full and the device cannot continue.

query UNTERMINATED after indefinite response

Indicates that a query was received in the same program message after an query requesting an indefinite response was executed (see

Five secondself

This message appears when the command *tst? is sent to the instrument over the HP-IB bus. The instrument runs a

IEEE

488.2, 6.3.1.7).

IEEE

488.2 6.5.7.5).

test

...

For example, both

Operation Messages

lc-7

subset

of

its power-up tests when this message is displayed.

The local key

is

disabled during this time.

Service

Messages

Messages numbered

500

and above relate

to

the service self tests provided within the instrument. For information about troubleshooting the instrument, refer to Chapter

5,

“Service.

”

IC-8

Operation Messages

2

HP-IB

Programming

Background

This signal generator adheres to the IEEE 488.1-1987, IEEE

488.2-1987 and SCPI Version 1992.0 command language. In 1987, the IEEE released IEEE 488.2-1987, Codes, Formats,

Protocols and Common Commands for Use with IEEE 488.1-1987. This standard defined the roles of instruments and controllers in measurement system and a structured scheme for communication. In particular, IEEE 488.2 described how to send commands to instruments and how to send responses to controllers. some frequently used housekeeping commands explicitly, but each instrument manufacturer was left with the task of naming any other

types of commands and defining their effect. IEEE 488.2 specified how certain types of features should be implemented included in an instrument. It generally did not specify which features

or commands should be implemented for Thus, it was possible that two similar instruments could each conform

to IEEE 488.2, yet they could have an entirely different command set.

Standard Commands for Programmable Instruments (SCPI) is the new instrument command language for controlling instruments that goes

a

beyond IEEE 488.2 to address in

a

standard manner. SCPI promotes consistency, from the remote programming standpoint, between instruments of the same class, and between instruments with the same functional capability.

wide variety

a

particular instrument.

of

It

defined

if

they were

instrument functions

a

HP-IB

Programming

2-1

Programming

Guidelines

What

HP-IB

is

Error

Definition

Programmable

HP-IB

Address

Messages

Programming

Language

HP-IB stands for Hewlett-Packard Interface BUS, and is often referred to

as

the bus.

488.1-1987 and the Programmable Instrumentation.

All functions are programmable except the front panel power key, knobs, memory keys, increment set key, arrow keys, frequency reference keys and the rear panel display contrast control.

The HP-IB Address for the signal generator changed to any address between desired two-digit number.

The HP-IB programming error messages are described in Chapter IC,

“Operation Messages.

Although many system controllers and programming software

languages are compatible with this instrument, all examples and

references in this manual assume the use of an HP controller utilizing the HP BASIC programming language.

Most instrument settings may be queried via HP-IB. The data returned

from the query will vary from a yes/no depending

It

is Hewlett-Packard’s implementation of the

IEEE

488.2-1987 Standard Digital Interface for

is

preset to

00

and 30, by pressing

”

(1/0)

to the actual setting,

on

the function. See Table 2-1.

19.

IEEE

It

may be

and the

Advanced

Programming

For the majority of applications, remotely programming the signal generator requires only basic programming knowledge and the command statements listed later in this chapter. Developing programs for querying the instrument’s status an advanced application (see “HP-IB Status Reporting. information on HP-IB programming see the

Hewktt-Ftzckard Interfuce

Bus

(HP Part number 5952-0156).

is

considered to be

”)

For more

Tutorial Description of the

HP-IB

Programming

2-3

Programming

Examples

Examples are provided here to help you understand the required programming structure. All examples use the HP BASIC programming language. See Table

2-1

for a complete listing of commands.

Note

Programming RF

Frequency

Programming RF

Frequency and

Modulation

FM

Command statements may be concatenated on the same line

if

separated by a semicolon. A colon must precede successive command statements to ensure command hierarchy.

OUTPUT

The output statement (HP BASIC) tells the system controller to output what follows.

7

19

Semicolon

The Input/Output select code of the system controller

is

7.

The HP-IB address of the signal generator

A

(;)

semicolon separates the HP BASIC command from

is

19.

the output string that follows.

Quotes

("

FREQ:CW

All command statements must be contained in quotes.

")

This command programs the RF frequency. FREQ must be in the statement first representing hierarchy over :CW. The colon

(:)

is

used to separate

its

the command hierarchy. The signal generator will be

lIlI-ITPI_IT E],::T

j

:

FP1:

111

1.1

'

I

FM:

DEV

71'3;

E::.(T:

programmed to

"FREI;!:

I~l~lIJp

I:Lij

588

HI:

i

:

HH:

This command programs the

a

RF frequency of

MHZ;

:

FP1:

!;THT

IZIFFj

500

MHz.

DE'd 3 KHZj : FP1:SIIII-IR

:

F'N:

STHT

OFF

j

:

FPI

FM

deviation. FM

:

STHT

is

higher than DEV in the command hierarchy and is

(:).

separated by a colon be programmed to

The signal generator will

3

kHz

of

deviation.

2-4

HP-IB

Programming

Semicolon

(;)

FM:SOUR:EXT

FM:EXT:COUP FM:STAT

ON

A semicolon separates completed command statements.

This command selects the external path for the modulation source.

AC

This command selects ac coupling. This command changes the FM modulation to an

A

on state. on before it

formats must be turned

desired modulation (AM:STAT

modulation format must be turned

is

active. The other two modulation

off

prior to activating the

OFF

and PM:STAT

OFF).

Line

100

This command outputs a query for the RF frequency setting. You may attach

a

question mark

(?)

to any

of

the signal generators' commands to query its setting.

Programing

Amp1itude

RF

Line

200

This command enters the queried frequency setting into the variable Freq-set.

Line

300

OI-ITF'I-IT

719;

This command prints the queried frequency setting.

"POW:

HMPL

-47

DE:M; : OUTP:

STHT

i:it4J"

P0W:AMPL This command programs the RF amplitude. POW is

higher than AMPL in the command hierarchy and is

0UTP:STAT

separated

amplitude will be programmed to

ON

This command changes the state. The RF amplitude defaults to an

by

a colon. The signal generator's RF

-47

dBm.

RF

amplitude to an on

off

state when

the instrument is powered on.

HP-I8

Programming

2-5

mble

2-1.

Programming Command Statements and Descriptions

0UTP:STAT 0UTP:SIIAT OFF P0W:AMPL <value>

P0W:ATT:AUTO ON

P0W:ATI':AUTO OFF

P0W:REF <value> <units>

P0W:REF:STAT ON

P0W:REF:STAT OFF

FREQ:CW <value> <units>

Modulation Amplitude Modulation AM:DEPT <value> PCT AM:STAT AM:STAT OFF AM:SOUR INT AM:SOUR EXT AM:SOUR INT,EXT AM:INT:FREQ AM:INT:FREQ AM:EXT:COUP DC AM:EXT:COUP AC Frequency Modulation CAL: DCFM FM:DEV <value>

FM:STAT ON FM:STAT OFF FM:SOUR INT FM:SOUR EXT FM:SOUR INT,EXT FM:INT:FREQ FM:INT:FREQ FM:EXT:COUP DC FM:EXT:COUP AC

ON

1

KHZ

400

1

KHZ

400

<units>

HZ

KHZ

HZ

Turns the RF output on. Turns the RF output

Sets

the amplitude of the RF output to the desired <value> and <units>. <value> may be up to plus

a

sign

if

resolution of

DBM,

MV,

UV,

reference mode only DB or DBM are allowed. Turns automatic attenuator control on (this

on). Turns automatic attenuator control off and holds

present attenuator setting.

Sets

a

reference to the <value> in described in setting amplitude. Reference state must be on, to be active.

Sets

reference to on, making all amplitude changes

relative to the reference.

Sets

reference to

absolute.

Sets the RF frequency to the <value> and <units>.

<value> may be up to

Hz

resolution. <units> may be

Sets AM depth in Sets AM on, FM and PM must have state Sets AM Selects internal source. Selects external source. Selects internal and external sources Selects internal Selects internal AM cannot Selects external ac-coupling for AM.

Eliminates dc FM offset. Sets FM deviation in

and

10.0

off.

be

to

99.9,

off.

applicable, e.g.

.1

dB,

.001

MVEMF, UVEMF, DBUV, DBUVEMF.

off,

%,

<value> from

1

kHz

400

Hz

dc-coupled (SCPI allows command).

kHz,

<value> may

-127.1

or maximum

mV,

.01

pV.

<units>

making all amplitude changes

9

digits with a maximum of

MHZ, KHZ

.1

frequency.

<value> from

also

be

may be

is

normally

as

or

HZ.

to

99.9

off.

0.00

to

entered in

4

9.99

digits

If

10

Hz

in

(HZ).

Sets FM on, AM and PM must have state off. Sets FM

Selects internal source for FM. Selects external source for FM. Selects internal and external source. Selects internal Selects internal Selects external dc coupling for Selects external ac coupling for

off.

1

400

kHz

frequency.

Hz

frequency.

FM. FM.

OUTP:STAT?

POW :AMPL?

POW:ATT:AUTO?

POW:REF?

POW:REF:SIIAT?

FREQ:CW?

~~

AM:DEPT?

AM:STAT?

AM:SOUR?

AM:INT:FREQ?

AM:EXT:COUP?

FM:DEV?

FM:STAT?

FM:SOUR?

FM:INT:FREQ?

FM:EXT:COUP?

2-6

HP-IB Programming

mble

Command Statement Modulation (continued) Phase Modulation

PM:DEV <value> RAD

PM:mT PM:mT OFF PM:SOUR INT PM:SOUR EXT PM:SOUR INT,EXT PM:INT:FREQ 1 PM:INT:FREQ PM:EXT:COUP PM:EXT:COUP AC

Standard

SWT:QUES:POW:ENAB<NRl>

SWT:QUES:MOD:ENAB< NR1>

ON

400

Commands

KHZ

DC

HZ

2-1.

Programming Command Statements and Descriptions (continued)

for

Status

Description Query

in

Set phase modulation

0.00 to

9.99

and 10.0

Sets

PM on. AM and FM must have state

Sets

PM

off.

Selects internal source for PM. Selects external source for PM. Selects internal and external source.

Status

1

400

&porting

Selects internal Selects internal Selects external dc coupling for PM. Selects external ac coupling for PM.

&e

HP-IB

Returns contents of the power condition register. Enables <NR1> event registers for power. Returns contents of enabled event registers for power. Returns contents Enables <NR1> event registers for modulation. Returns contents of enabled registers for modulation.

radians (RAD), <value> from

off.

kHz

frequency.

Hz

frequency.

examples

of

the modulation condition register

~

PM:DEV?

PM:STAT?

PM:SOUR?

PM:INT:FREQ?

PM:EXT:COUP?

SIXT:QUES:POW:COND?

SIIAT:QUES:POW:EVEN?

SWT:QUES:MOD:COND?

SIXT:QUES:MOD:EVEN?

*RST

WAI

'CLS 'ESE <dec. nun. data>

'OPC

*SRE <dec. mum. data>

Resets the signal generator to a default state (see SCPI Command Reference).

Returns the instrument's identity. Executes an instrument self-test. Instrument waits until previous commands are

completed. Clears status and event registers. Enables Standard Event Status Register bits. Queries the Standard Event Status Enable Register. Queries the Standard event Status Register. Enables the Operation Complete bit of the Standard

Event Status Register. Queries the Operation Complete bit of the Standard

Event Register. Enables the bits in the Status Byte that will cause

Service Request. Queries the Service Request Enable Register. Queries the Status Byte with the MSS bit.

a

*IDN?

*TSr?

*ESE?

*ESR?

*OPC?

*

SRE?

*

STB?

HP-IB Programming

2.7

HP-IB

Status

Reporting

Reverse

Unspecitled Amplitude

Power

POWer

Status

Register

The IEEE reporting. This status byte may be accessed by using IEEE

488.2

standard provides a status byte for instrument status

488.2

Common Commands and SCPI Status Commands. The following figure shows the status reporting structure for instrument operation.

The following examples will be used to explain instrument operation

status.

rn

External Modulation Input Status

rn

Reverse Power Protection Status

rn

Unspecified Power (Amplitude) Entry Status

488.2

General IEEE

status reporting will not be covered. The above

operating status will satisfy most needs for status reporting.

NOTE:

Unmarked

tits

in

registers

do

apply

for

normal

blts

mclrt

status.

operation

be

See

These

querying programming examples.

not

st~tus.

masked when

me

Ext.

Mod.

Ext

status.dnv

Level Hlgh

Mod.

Level Low

Unspecified

Figure

2-1.

Devlce

HP

Dependent

Execdon

Comnand

8647A

Em Em

Error

Status

Register Model

2-8

HP-IB Programming

External Modulation

Input Level Status

External modulation input level status may be queried for high, low or input level correct. The instrument automatically detects the input

(1

level

Vpk into

600

ohms for full scale modulation) and displays the result on the front panel display but must be queried for HP-IB reporting.

Example: Check the

Low)

18

OUTPUT

28

Et.jTER

38

tli:i!j=B

48

IF

58

rloid=B I t.IHt.ID

Eu8

IF

78

Et.jK1

Line

10

Line

20

Line

30

719;

I

Mod=l

tlolj=2

71’3;

“STHT: QUES:

$'slue

t.jHt.IL1

THEN PRIt4T

THEt.4

I::’O).~

1

IJE.

1

IJe

F‘FIItJT

Queries the condition of the MODulation register. Besides querying the condition you may also query if an event has occurred, such modulation input being high or low time. Replace the COND? with EVEN? to read the event status. Reading the event status clears the register.

Enters the condition of the MODulation register into the variable “Value”.

Uses the HP Basic command, BINAND to check the contents of bit reported equal

Condition

MEID:

1

“Ext.

Mcld.

9

2)

”E;.:t..

MI:I!~.

0

in “Value”. If bit 0 is

as

a decimal equivalent

“

1

”.

of

Modulation

tZtItt.iD?”

Input.

Hi&I”

LI:zI.,.I”

as

the external

“1”

Input

at

(High

some previous

a

“1”

it will be

and “Mod” will

or

Line

40

50

60

Checks if the MODulation condition is prints that the external modulation input

‘I

1

” and

is

high.

Uses the HP Basic command, BINAND to check

1

the contents of bit equivalent

“2”)

in “Value”.

is

a

“l”,

“Mod”

Checks if the MODulation condition is

If

bit 1 (decimal

will equal

“2”

“1”.

and

if

prints that the external modulation input is low.

if

true,

HP-IB Programming

2-9

Example: Generate a Service Request for External Modulation Input

18

I:IIJTPI-IT

20

IIII-ITF'I-IT

:38

iIil-lTPl)T

48

IF

Cl&.

PlZt.

58

IIILlTPlJT

ceJ8

Et.jD

Line

10

SPIIlLL

elj

71'3;

":STHT: QIJES:

71'3;

"STFIT: QIJES:

714;

ll+:;RE

(7

1'3

:I

71'3;

"+lI:LS"

Enables bits 0 and 1 (decimal equivalent MODulation register. Enabling these bits masks other bits in the MODulation register from reporting their status in the summary bit to QUEStionable.

(High

THE14

::;I1

FFF:

or

1

Low)

tKC1:

EHHB

t.IT

II

Ext.

Et433

12:8"

.

t$:ld.

3"

1

rlpijt.

Hi

qh

...'L~J

3)

in the

Line 20

Line

30

Line

40

Line

50

7

Enables bit

(decimal equivalent 128) in the

QUEStionable register. Enabling this bit masks other

bits in the QUEStionable register from reporting their

status in the summary bit to STATUS.

3

Enables bit

(decimal equivalent

register. Enabling

this

bit masks other bits from

8)

of

the STATUS

reporting. Uses the HP Basic command, SPOLL, (Serial

to see if the service request bit

is

reporting any

Poll)

interrupts. Clears

all

status registers. Clearing the status registers is not absolutely necessary, but is used here because of the unknown state of the instrument.

2-10

HP-IB Programming

Reverse

Protection

Power

Status

This instrument provides protection from signals inadvertently applied

is

to the RF output of the instrument. This protection

commonly

called reverse power protection (RPP). The instrument automatically

detects the reverse power, which in turn, disconnects the instruments

will

RF output. When the RPP engages, the front panel display

read

RF OFF but must be queried for HP-IB reporting.

Example: Check the

18

IIIIJTFI-IT

28

EEjTEE

;:a

F:pp=B

48

IF

58

1

1:l:It-rel~t.

688

IF H$="'f"THEt.j IIlIJTPI-IT71'~; "IIIlJTF': !STHT

--

-.

i'd

tNL3

RFp=1

F

Rpp=

elj

.-

7

1

t.jHbj[>

Line 10 Line

20

"!zTHT: G!I-IE:S:

719;

$'a

13

j

('u'a

THEN FF:INT

1

THEN 1 t.jPlJT

(

'r',+l

;a

'I

Queries the condition of the POWer register. Enters the condition of the POWer register into the

1

IJ~

1

IJe

9

H$

condition

PCtW:

3

1

::I

"WF

is

15

t-ea.>et-se poi.,jet- i npijt.

of

~~Cl~j[:l'?'"

eri~~a~3ed"

variable "Value".

Line 30

40

Line

Uses the HP Basic command, contents of bit

will

equal

Checks

if

0

in "Value". If bit 0 is a

" 1 "

,

the RPP condition is

that the RPP is engaged.

Line

50

Checks if RPP condition is situation has been corrected.

Line 60

Checks if the answer was yes to correction and turns the RF output on to reset the RPP.

the

RPP

I:It.j"

BINAND

"1"

1

'

and if true

to

check the

"l",

"Rpp"

and if true prints

asks

if

the

if

true

Unspecified Power

(Amplitude) Entry

Status

This instrument provides a message if an amplitude entry is requested above hold range is exceeded (see operating part of manual). When unspecified amplitude

"Amplitude exceeds specified range,

+

10 dBm and less than or equal to

is

entered, the front panel display will read

"

+

13

dBm or an attenuator

an

but must be queried for HP-IB

reporting.

HP-IB Programming

2-1

1

Example: Check the Condition

of

Unspecified Power

Entry

10

I:IIATF'IlT

18

Et.jTER

:::a

F'l:lI,.I-spelz=B

48

IF

58

E

t.j[:l

Line

10

Line

20

Line

30

Line

40

"STHT:

71'3;

71'3:'t).al1~e

I

t.jHt.jD

FI:II.,,I-~~~I:=~

THE14 PRIbjT

Queries the condition of the POWer register. Besides querying the condition you may also query if event has occurred. Replace the COND? to read the event status. Reading the event status clears the register.

Enters the condition variable "Value".

Uses the the contents of Pow-spec will equal

Checks if Pow-spec equals 2 and then prints that the amplitude is in

1::

Ini'a

IS!I-IES:

FOW:

I~OHD?"

1

IJe

3

2

:I

"Mmpl

HP

Basic command, BINAND to check

bit

it.ude

of

1

in "Value".

iunspecif

the POWer register into the

If

bit 1 is "high",

"2".

an

unspecified range.

ied"

with

an

EVEN?

2-12

HP-IB Programming

HP

8647A

Command

Reference

SCPI

Wble

2-2.

Dictionary

of

Terms

<NRf>

<NRl>

~

DescriD tion

Indicates an ASCII representation of a number if required in the command statement. The number may be an integer

or floating-point, and may include a decimal exponent. (nrf

stands for “flexible numeric representation”. For further

488.2

information, refer to the IEEE Indicates an ASCII representation of

standard.)

a

number if required in the command statement. The number must be an integer and may not include decimal points. For further

488.2

information, refer to the IEEE Indicates that a

“PCT”

command statement.

termination

If

no termination is specified, a “PCT”

standard.)

is

required in the

value is assumed. Indicates that

termination command is not terminated then

a

“HZ”,

is

required in the command statement. IF the

”KHZ”,

“GHZ”,

“HZ”

or

“MHZ”

is assumed.

~~ ~~

Indicates that a “RAD” termination is required in the command statement. If no termination is specified then

“RAD”

Indicates that a “DB”, “DBM”, “DBUV”,

is assumed.

“UV”,

“MV”,

“V”,

“UVEMF”, “MVEMF”, or “DBUVEMF” termination is required in the command statement. specified then “DBM”

is

assumed.

If

no termination

is

[command]

Bracketed commands are optional. SCPI assumes the optional command

Parameters separated by is

acceptable.

Parameters separated by parameters

are

is

present.

allowed.

“1”

indicates that either parameter

“,

”

indicates that multiple

HP-IB Programming

2-13

AM

Subsystem

CSOURcel

:

AM

Sets

[

:

DEPTh]

[:DEPTh] <NRf>

?

[<AM

term>]

depth in percent. *RST value

:

STATe?

ON

I

OFF

I

1

I

:STATe

0

is

30%.

Turns

AM

modulation

ON

or OFF. AM

AM:DEPTh. Turning AM modulation

is

not turned on by just setting

ON

will not automatically turn

OFF any other types of modulation. Turning any or all modulation

types

ON

turned

is

-221

or OFF must be done explicitly.

ON

while another modulation type

generated, and the state of the instrument

If

a

modulation type is

is

ON,

an execution error

is

unchanged. *RST

value is OFF.

:

SOURce?

:SOURce INTernal

Selects

AM

source. 'RST value is INTernal.

:

EXTernal

:

COUPling?

:COUPling

Sets source coupling for

I

EXTernal [,INTernal 1,EXTernalI

AC

I

DC

AM.

The GROund parameter defined by the

1991 SCPI Command Reference (17.1.9.2) is not supported. *RST

value is

DC.

:

INTernal

:FREQuency?

:

FREQuency

Sets the frequency of the

400

Hz

and

1

kHz.

*RST value

<NRf

>

[<f

req term>]

AM

internal signal source. Legal values are

is

1

kHz.

2.14

CAL

HP-IB

Programming

Subsystem

[SOURcel

:

CAL

:

DCFM

Eliminates the offset in dc FM

so

that the carrier frequency remains the same with no modulation applied. External dc modulation must be

on

to implement this calibration or execution error -221

generated.

is

FM

Subsystem

[SOURcel

:

FM

[

:

DEViat ion]

[

:

DEViat ion]

?

<NRf

>

[<f

req term>]

Sets FM deviation. *RST value is

:

STATe?

ON

I

:STATe

OFF

3

kHz.

I

1

I

0

Turns FM modulation ON or OFF. FM is not turned on by just setting

ON

FM:DEViation. Turning FM modulation

will not automatically turn OFF any other types of modulation. Turning any or all modulation types

ON

or OFF must be done explicitly.

turned

-221

*RST value is

ON

while another modulation type

is generated, and the state of the instrument is unchanged.

OFF'.

:

SOURce?

:

SOURce INTernal 1 EXTernal

If

a modulation type is

is

ON,

an execution error

[,

INTernal I ,EXTernall

Selects FM source. *RST value is INTernal.

:

EXTernal

:

COUPling?

:COUPling

AC I DC

Sets source coupling for FM. The GROund parameter defined by the

1991 SCPI Command Reference (17.4.9.2) is not supported. *RST

value is

DC.

:

INTernal

:FREQuency?

>

[<f

:

FREQuency

<NRf

req term>]

Sets the frequency of the FM internal signal source. Legal values are 400

Hz

and

1

kHz.

*RST value

is

1

kHz.

HP-IB Programming

2-15

Subsystem

:FREQuency

C:CW

I

:FIXedl?

[:CW

I

:FIXedl

CNRf>

[<freq term>]

This function selects a frequency for the continuous wave non-swept

is

100

signal. *RST value

MHz.

OUTPut

Subsystem

Omput

:

STATe?

ON

I

OFF

I

1

I

:STATe

0

This function controls the state of the RF output. When 0UTPut:STATe is OFF, the RF source level is set to

ON

0UTPut:STATe

causes the programmed

CW

off.

signal to be present at

the output terminal. *RST value is OFF.

Turning

2-16

HP-18 Programming

PM

Subsystem

CSOURcel

:

PM

[:DEViation]? [:DEViation] <NRf> [<angle term>]

Sets PM deviation in radians. *RST value is 1.0

:

STATe?

:STATe

Turns PM modulation

PM:DEViation. Turning FM modulation

ON I OFF

ON

or OFF. PM is not turned on by just setting

I 1 I

0

ON

RAD.

will not automatically turn

OFF any other types of modulation. Turning any or all modulation

ON

or

OFF

types

ON

turned

while another modulation type is

-221 is generated,

must be done explicitly.

and

the state of the instrument is changed. *RST

If

a modulation type is

ON,

an execution error

value is OFF.

:

SOURce?

1

:

SOURce

INTernal

Selects PM source. *RST value

:

EXTernal

is

INTernal.

[,

INTernal I ,EXTernall

:Cowling? :COUPling

AC

I

DC

Sets source coupling for PM. The GROund parameter defined by the

is

1991 SCPI Command Reference (17.10.9.2)

value is

DC

:

INTernal

not supported. *RST

:FREQuency?

>

:

FREQuency

<NRf

[<f req

term>]

Sets the frequency of the PM internal signal source. Legal values are

400

Hz

and

1

kHz.

*RST value is

1

kHz.

HP-IB

Programming

2-17

POWer

Subsystem

CSOURcel

:

POWer

[

:

LEVel]

[

:

IMMediate]

[

:

AMPLitude]

?

Returns the value of the current

DBM

units of

if P0Wer:REFerence:STATe is OFF, or it is in

to the current value of P0Wer:REFerence

ON.

is

[

:

LEVel]

[

:

IMMediate]

CW

amplitude. The return value is in

if

P0Wer:REFerence:STATe

[

:

AMPLitude]

term>]

Sets

CW

amplitude. *RST value is

:

ATTenuat ion

-136

dBm.

:AUTO?

:AUTO

When set

OFF

value is

ON,

the firmware

causes the attenuator range to hold to it's present setting.

ON

I

OFF

I

1

I

0

will

control the attenuators. Turning it

:REFerence? :REFerence

CNRf>

Sets a reference value which, if STATe is parameters to be queriedhet

0

value is

dBm.

:

STATe?

:STATe

ON

I

OFF

[<amp1

as

I

1

term>]

ON,

allows all amplitude

relative to the reference value. *RST

I

0

<NRf

>

DB,

relative

[Campl

'RST

Determines whether amplitude is output in absolute or relative mode. *RST value is

OFF.

2-1

8

HP-IB

Programming

STATUS

Subsystem

STATUS

:

QUESt ionable

C

:

EVENt]

?

Returns the contents

of

the event register associated with the status

structure.

:

CONDit ion?

Returns the contents

of

the condition register associated with the

status structure. Reading the condition register is nondestructive.

:

ENABle <NRl>

Sets the enable mask which allows true conditions in the event register to be reported in the summary bit.

:

ENABle?

Queries the enable mask.

:

POWer

[

:

EVENt]

?

:CONDition?

:

ENABle <NR1>

:

ENABle?

:

MODulat ion

[

:

EVENtl

?

:CONDition?

:

ENABle <NRl>

:

ENABle?

HP-IB Programming

2-19

SYSTem

Subsystem

SYSTem

:

ERRor?

Returns

any

system error message. The format of the response is

<error number>, <error string>.

:

VERSion?

Returns a formatted numeric value corresponding to the number

response

1990)

for which the instrument complies. The format of the

is

YYYYV.

and the V represents

The Ys represent the year version (for example,

an

approved revision number for that

year.

SCPI

version

2.20

HP-IB

Programming

HP-IB

Capabilities

The instrument is designed to be compatible with a controller that interfaces in terms of the bus codes summarized in the table. table describes each of the interface functions that are available with

as

this instrument

defined by the IEEE 488.2-1987

This

Capability

Source Handshake

Acceptor Handshake mker Listener

Service Request

Remote Local

Parallel Poll

Device Clear

Device Trigger

Controller Electrical Interface

Code

SH1 Full Capability AH1

T6, TEO Basic Talker, Serial Poll, untalk on

L4,

SR 1 Full Capability

RL1

PPO

I

DC1

I

DTO

1

CO

I

E2

Full Capability

LEO Basic Listener, unlisten on MTA

~ ~~ ~

Full Capability

No

Capability

I

Full Capability

1

No

Capability

1

No

Capability

I

Tristate

(1

Comment

MB/sec

Max)

MLA

~

HP-IB

Programming

2-21

HP-IB

Connector

Information

Should be grounded

near termination

other

wire

pair

The

Hewlelt-Packard Interface

false state

(0)

is

+2.5

Hewlett-Packard Interface

Signal Ground

of

Vdc

of

twiated

Bus

to

+5

P/O Twisted Pair With Pi0 Twisted Pair With

P/O Twisted Pair P/O

Twisted

P/O Twisted Pair

PI0 Twisted Pair With

Isometric

M3.5

Thread

logic levels are

Vdc.

x

11

10

With

9

Pair

With

Witt,

REN

D108

D107 D106

Dl05

0.6

llL

compatible, that

8

7

6

-b

0

is,

Bus

Connect to earth

Shield,

ATN

SRQ

IFC

NDAC

NRFD

DAV

EO1

D104 D103

D102

0101

24 Pin MicreRibbon

(Series

57)

the true (1) state is

Connector

0.0

Vdc to

ground

+0.4

Vdc

and

the

HP 1251-0293; Amphenol 57-30240

HP

10833A4,

HP 108033B,2 meters HP 10833C, 4 meters (13.2 HP 108330,

1.

A

2.

The maximum accumlative length

n:banuals\boilervlpibcon

2-22

HP-IB Programming

1 meter

(3.3

ft.)

(6.8

ft.)

.dw

ft.)

of

connecting cable for any Hewett-Packard Interface

0.5

meters (1.6

Hewiett-Packard Interface Bus system may contain no more than 2 meters (6.6

1

lt.)

of

connecting cable per instrument.

Bus

system is

20

meters

(65.5

ft.).

Installation

Unpacking

Signal Generator

Your

Warning

1.

Unpack the contents of the shipping container.

2.

Inspect the shipping container for damage.

If

the shipping container is damaged or the cushioning material inside is stressed, keep them until you have checked the instrument for proper operation.

3.

Inspect the signal generator to ensure that during shipment.

If

mechanical damage or defects have occurred, notify the carrier

as

well

as

the Hewlett-Packard ofice. Keep the shipping materials

for inspection by the carrier.

~~

To

avoid hazardous electrical shock, do not connect

the

instrument when there

any portion of

the

outer enclosure (cover and panels).

are

any signs of shipping damage to

it

was not damaged

AC

3

power to

Connecting Power

Warning

Caution

AC

Ventilation Requirements: When installing the instrument in a

cabinet, the convection into and out of the instrument must not be restricted. The ambient temperature (outside the cabinet) must be less than the maximum operating temperature of the instrument by

4

"C

for every power dissipated in the cabinet is greater than convection must be used.

This

is a Safety

earthing ground incorporated in

shall

plug protective conductor, inside instrument dangerous. Intentional interruption

If

this

autotransformer common terminal power supply.

only be inserted in a socket outlet provided with

earth

instrument

100

watts dissipated in the cabinet.

800

Class I product (provided with a protective

the

power cord).

contact. Any interruption

or

outside

is

to

for

voltage reduction, make sure

is

connected to a neutral (earthed pole) of the

the

instrument,

be

energized via an external

of

is

If

the total

watts, then forced

The

mains

the protective

likely to make the

is

prohibited.

that

its

a

This instrument is equipped connected to an appropriate ac power receptacle, this cable grounds

with

a three-wire power cable. When

Installation

3-1

the instrument cabinet. The type of Mains plug shipped with each instrument depends on the country of destination. Refer to Figure 3-2 for the part numbers of the power cables and mains plugs available.

Power Requirements

Caution

Replacing the Fuse

The signal generator requires a power source of either 50/60/400 Hz at 100/120 nominal voltage values

150

VA

This instrument has autoranging line voltage input; be sure the supply voltage is within the specified range.

If

a fuse failure is suspected, replace the 250

part number 2110-0780)

1. Unplug the power cord from the line module.

2. Use a flat-bladed screw driver to pry and unseat the fuse housing from the line module.

V

or 50/60 Hz at 200/240

maximum.

"hble

3-1.

Voltage Ranges

I

Available

V.

The voltage ranges for these

are

shown in Bble 3-1. Power consumption is

for

Nominal Voltage Values

ac

Voltage 1 Voltage Range

90

to

110 V rms 108 to 132 198 to 242

216 to 250

V,

as

follows:

V

3A, type F fuse (HP

I

rms rms

rms

3. Remove the cartridge and inspect the fuse positioned toward the front of the instrument.

3-2

Installation

....

0

0.0

....

0 0 0

Figure

3-1.

Replacing the Fuse

Installation

3-3

PLUG TYPE

*

CABLE

HP PART

NUMBER

PLUG

DESCRIPTION

CABLE

LENGTH

CM

(INCHES)

CABLE COLOR

FOR USE

IN COUNTRY

250V

125V

fi

8 120-1 351

8120-1703

8 1 20- 1369 8 120-0696

81 20-1689

8

1

20- 1692

8120-1348 81 20-1 538

81 20-1 378 8 120-4753

8 120-1 521 8 120-4754

BS1363A

gh

r a

i

g h t

gh

t*

*

CEE7-Y11

NEMA5-

*

t

1

5P

St ra i 9

oo

Straight* NZSS198/ASC11:

9

oo

Straight

9

oo

Straight* NEMA5-15P goo

S

t

St ra i

o'

9 9

oo

229 (90) 229

(90)

201 (79)

221 (87)

201 (79)

203 (80) 203 (80)

203 (80) 230 (90) 203 (80)

230 (90)

Mint Gray

Gray

dint Gray Mint Gray

~l~~k

I

ack

B

jade

troy

Jade Gray

Great Britain, Cyprus, Nigeria,

Singapore,

Z irnbabwe

Argentina, Australia, New Zealond,

Mainland Chino

East and West Europe. Central

African Republic

United Arab Republ

(unpolarized in

many

United States

Canada.

Japan (100 200 v), Brazi

Colombia, Mexico

Phi Saudi0 Arabia, Taiwan

ic

nations)

1

i

pp i nes,

V

or

1,

250V

*

**

FORMAT80

81 20-5 182

8 120-5

Part number for plug

HP

Port Number for complete cable, including plug.

E = Earth Ground;

1 8 1

St

ra i

gh

t* NEMA5-?

3

0'

is

industry identifier

L

=

Line; N = Neutral.

Figure

3-2.

Power Cable

5P

and

200 (78) 200 (78)

for

plug only. Number shown for cable is

Jade Gray Jade Gray

Israel

Mains Plug

3.4

Installation

Turning On the Signal Generator

If you are operating this instrument in extreme environmental conditions, refer to the following operation limitations.

The following minimum conditions are required for safe operation

this instrument:

I

Indoor use

I

Altitude

I

Temperature:

w

Maximum relative humidity decreasing linearly to

<

4572

meters (15,000 feet)

0

"

to

50

"C, unless specified differently

50%

80%

for temperatures up to

relative humidity

at

40

OC

31

OC

of

Caution

Connecting Other

Instruments

to

v

Storing the Signal Generat

or

The instrument performs a diagnostic self test on power-up. problems are detected with functionality it will display

"

Refer to Chapter IC, "Operation Messages,

for further information

a

message. about the messages. This instrument

Pollution Degree 2 per IEC 1010 and

Coaxial

either

mating connectors used with the signal generator should be

500

with those specified in

The instrument should be stored in a clean,

BNC

is

designed for use in Installation Category

664

respectively.

or

500

type N male connectors that are compatible

UL

MIL-C-39012.

dry

environment. The

I1

following environmental limitations apply to both storage and shipment.

Temperature -20 OC to

I

Humidity < 95% relative

+

70

"C

If

and

any

Note

I

Altitude 15,300 meters

(50,000

feet)

The cabinet should only be cleaned using

a

damp cloth.

Installation

3-5

Shipping

Generator

th

.e

Signal

Containers and materials identical to those used in factory packaging

If

are available through Hewlett-Packard offices. is being returned to Hewlett-Packard for servicing, attach a tag indicating the type of service required, return address, model number, and full serial number. Also, mark the container careful handling. In any correspondence, refer to the instrument by model number and full serial number.

If

you are using other packaging, follow the guidelines below:

1.

Wrap the instrument in heavy paper or plastic.

2.

Use a strong shipping container. A double-wall carton made of MPa

(350

psi) test material is adequate.

3.

Use enough shock-absorbing material

3

to

4

inches) around all sides of the instrument to provide a firm cushion and front-panel

4.

Seal the shipping container securely.

5.

Mark the shipping container

to

prevent movement

with

cardboard.

FRAGILE

(75

in

the container. Protect the

to assure careful handling.

the instrument

FRAGLLE

to

100

millimeter layer;

to assure

2.4

3.6

Installation

Specifications

This chapter contains specifications and supplemental characteristics

HP

for the

8647A signal generator.

Specifications describe the instrument’s warranted performance over the

temperature range and apply after a

30

minute

0

to

50°

warm-up unless otherwise noted. All performance below a carrier

250

kHz

frequency of

1

Supplemental characteristics (shown in italics) are intended

is typical.

to

provide information useful in estimating instrument capability in your application by describing typical, but non-warranted performance.

Specifications

4-1

Agilent 8647A Operations Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents