HP 59501B Manuale di servizio

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OPERATING

AND

SERVICE

MANUAL

FOR

SERIALS

2308A-00101

AND

ABOVE

*For

Serials

above

2308A-00101

a

change

page

may

be

included.

HP

Part

No.

59501-90004

Manual

Microfiche

No.

59501-90005

Printed:

April

1983

MANUAL

CHANGES

Models

59501B

Power

Supply

Programmer

Manual

HP

P/N

059501-9000L

Make

all

corrections

in

the

manual

according

to

errata

below,

then

check

the

following

table

for

your

power

supply

serial

number

and

enter

any

listed

chan¬

ge

(s)

in

the

manual.

In

the

replaceable

parts

list,

on

page

6

-

5

,

add

HP

Part

No.

096Q~04hh,

TQ.

1,

MFR.

CODE

28U80,

next

to

"Power

Module

on

rear

panel

(includes

voltage

selection

PC

Board

and

Fuse)".

On

the

same

page,

under

Mechanical,

change

Top

shell

to

HP

Part

No.7101-0622

and

Bottom

shell

to

HP

Part

No.

7101-0623.

U/24/8U

CHANGE

1:

On

page

7~3,

replace

Figure

7-2B

with

the

Figure

shown

below.

ERRATA:

On

page

1-1

under

ACCESSORIES

(con¬

tinued

on

page

1-2),

change

Rack

Mounting

Kit

for

one

half

module

width

unit

from

HP

P/N

5061-0054

to

5061-0072>Back

Mounting

Kit

for

two

half

module

units

from

HP

P/N

5061-0076

to

HP

P/N

5061-007U

and

Rack

Mounting

Kit

for

two

units

from

HP

P/N

5061-0055

to

HP

P/N

5061-0071.

On

page

1.-3,

in

table

1-1,

add

the

following

specification;-.

PARD

(ripple

and

noise):

2mV

rms/10mV

p-p

SECTION

I

GENERAL

INFORMATION

1-1

INTRODUCTION

1-2

This

instruction

manual

contains

operating

and

service

instructions

for

the

HP-IB

Isolated

D/A

Power

Supply

Programmer

Model

59501B,.

Installation

instructions

and

sample

programs

are

also

provided.

The

59501B

allows

HP

power

supplies

to

be

digitally

controlled

via

the

Hewlett-Packard

interface

Bus

(HP-IB)

from

a

calculator,

computer,

or

other

controller.

The

digital

format

is

bit

parallel,

byte

serial,

ASCII

coded

format.

The

59501B

can

also

be

used

on

the

HP-IB

as

a

digitally

programmable

low

level

dc

signal

source.

Since

the

59501

B

!

can

be

controlled

(programmed)

by

various

control

devices

such

as

HP

9800

desk-top

computers,

hereafter

in

this

manual,

the

controlling

device

will

be

referred

to

as

the

"con¬

troller”,

except

when

specific

programming

examples

are

provided.

1-3

DESCRIPTION

1-4

The

59501B'.

is

basically

a

digital-to-analog

(D/A)

converter

that

provides

an

output

voltage

in

response

to

digital

data

received

on

the

HP-IB.

Two

programmable

output

ranges

(IV

and

10V)

are

available.

In

addition,

a

switch

on

the

rear

panel

allows

selecting

either

a

unipolar

or

bipolar

output

mode.

The

unipolar

mode

provides

a

0

to

,999V

or

a

0

to

9.99V

output

range

and

the

bipolar

mode

provides

a

—IV

to

+0.998V

or

a

—10V

to

+9.98V

output

range.

The

59501

B's

output

can

be

used

as

a

programming

voltage

for

controlling

a

wide

range

of

dc

voltages

and

currents

from

HP

power

supplies

or

as

a

source

voltage

for

testing

electronic

components

such

as

integrated

circuit

packages

(IC's).

1-5

Isolators

within

the

59501B

protect

other

instru¬

mentation

on

the

HP-IB

from

damage

that

could

be

caused

by

power

supply

outputs.

Also,

an

internal

circuit

ensures

that

the

output

is

held

near

zero

until

programmed

data

is

received.

Power

supply

programming

is

accomplished

through

use

of

the

59501

B's

programmable

output

voltage

and

its

front

panel

adjustments.

By

making

the

appropriate

connections

between

the

59501

B's

rear

terminals

and

the

programming

terminals

on

the

supply,

the

output

voltage

(or

current,

if

available)

of

the

power

supply

can

be

programmed

from

zero

to

its

full

rated

output.

The

59501

B's

front

panel

adjustments

provide

fast

and

easy

cali¬

bration

of

power

supply

outputs.

The

ZERO

ADJUST

enables

the

user

to

correct

for

small

offsets

in

power

supply

response

to

programmed

inputs.

The

POWER

SUPPLY

FULL

SCALE

ADJUSTMENT

(COARSE

and

FINE)

allows

the

user

to

set

the

maximum

output

desired

from

the

power

supply

when

the

59501B

is

programmed

touts

maximum

output.

This

method

of

programming

is

called

voltage

programming

with

gain.

Power

supply

program¬

ming

is

described

in

greater

detail

in

Section

III.

1-6

Programming

the

59501B

is

accomplished

through

the

transmission

of

four

consecutive

digits

(four

ASCII

characters).

The

first

digit

specifies

output

range

and

the

next

three

digits

specify

the

magnitude

within

the

selected

range.

The

high/low

range

capability

provides

a

ten

to

one

improvement

in

resolution.

Internal

conversion

circuitry

enables

the

59501B

to

produce

its

maximum

output

voltage

in

approximately

250^sec

from

the

time

the

digital

data

is

received.

Output

current

up

to

10

milliamps

is

available

and

is

automatically

limited

to

protect

the

59501B

and

the

user

equipment.

1-7

HP-iB

CAPABILITIES

1-8

The

59501B

has'listener"

and

"acceptor

hand¬

shake”

HP-IB

functional

capabilities.

The

LISTENING

indicator

on

the

front

panel

provides

a

convenient

means

of

monitoring

the

59501

B's

operating

status.

The

59501B

does

not

have:

controller,

talker,

source

handshake,

service

request,

device

trigger,

extended

listener,

extended

talker,

parallel

poll,

and

remote/local

HP-IB

functional

capabilities.

All

HP-IB

functional

capabilities

are

described

in

IEEE

Standard

488-1975.

1-9

SPECIFICATIONS

1-10

Detailed

specifications

for

the

59501B

are

given

in

Table

1-1.

1-11

ACCESSORIES

1-12

The

System-11

cabinet

accessories

listed

below

may

be

ordered

with

the

59501B

unit

or

separately

from

your

local

Hewlett-Packard

field

sales

office

(refer

to

list

at

rear

of

manual

for

addresses).

All

accessories

applicable

to

System-11

modular

cabinets

are

fully

described

and

illustrated

in

the

Hewlett-Packard

Electronic

Instruments

and

Systems

catalog.

1-1

H

P

Part

No.

5061-0088

5061-0094

1460-1345

5061-0054

5061-0076

5061-0055

5061-0096

5061-2021

5061-2022

1494-0015

Description

Two

front

handles

that

attach

to

each

side

of

3

1

/2"

high

cabinets.

Kit

of

lock

link

hardware

for

joining

together

cabinets

of

equal

depth.

Units

can

be

joined

side-by-side

or

vertically.

This

kit

is

required

whenever

two

(or

more)

sub-module

units

are

to

be

rack

mounted

side-by-side.

Tilt

stand

snaps

into

standard

foot

supplied

with

instrument

-

must

be

used

in

pairs.

Rack

mounting

kit

for

one

half

module

width

unit,

3

1/2-inches

high.

Includes

one

rack

flange

(ear)

and

one

half

module

width

extention

panel

(adapter).

Rack

mounting

kit

for

two

half

module

units,

3

1/2"

high.

Kit

includes

two

rack

flanges

(ears).

Also,

lock-together

kit

(5061-0094)

is

required

for

joining

the

two

units

together.

The

cabinets

must

also

be

of

equal

depth.

Rack

mounting

kit

for

two

units

(one

half

module

width

and

one

quarter

module

width).

Kit

includes

one

rack

flange

and

one

quarter

width

extension

adapter.

Lock-together

kit

(5061-0094)

is

required

for

joining

the

two

units.

Support

shelf

for

mounting

one

or

more

3

1

1

2

"

high

units

which

are

half

module

or

quarter

module

width.

Cabinet

depths

need

not

be

equal.

Front

filler

panel

(one

quarter

module

width)

for

3

1/2”

high

support

shelf.

Front

filler

panel

(one

half

module

width)

for

3

1/2"

high

support

shelf.

Slide

kit

for

support

shelves

mounted

in

HP

rack

enclosures.

1-13

INSTRUMENT

AND

MANUAL

IDENTIFICATION

1-14

Hewlett-Packard

instruments

are

identified

by

a

two

part

serial

number.

The

first

part

is

the

serial

number

prefix,

a

number-letter

combination

that

denotes

the

date

of

a

significant

design

change

and

the

country

of

manufac¬

ture.

The

first

two

digits

indicate

the

year

(10

=

1970,

11

=

1971,

etc.),

the

second

two

digits

indicate

the

week,

and

the

letter

A

designates

the

U.

S.

A.

as

the

country

of

manufacture.

The

second

part

is

the

instrument

serial

number;

a

different

sequential

number

is

assigned

to

each

instrument,

starting

with

00101.

1-15

If

the

serial

number

on

your

instrument

does

not

agree

with

those

on

the

title

page

of

the

manual,

Change

Sheets

supplied

with

the

manual

of

Manual

Backdating

Changes

define

the

difference

between

your

instrument

and

the

instrument

described

by

this

manual.

1-16

ORDERING

ADDSTIONALMANUALS

1

-17

One

manual

is

shipped

with

each

instrument.

Additional

manuals

may

be

purchased

from

your

local

Hewlett-Packard

field

office

(see

the

list

at

the

rear

of

this

manual

for

addresses).

Specify

the

model

number,

serial

number

prefix,

and

the

HP

Part

Number

provided

on

the

title

page.

1-19

In

addition

to

this

manual,

the

unit

is

shipped

with

Pro¬

gramming

Note

59501A/HP85-1

(HP

Part

No.

59501-90003)'.

This

note

also

applies

to

the

59501B

in

all

respects

and

pro¬

vides

programming

examples

for

use

with

the

HP85

or

other

BASIC

language

controllers,

as

well

as

CV/CC

Programming

Connections

between

the

59501A

and

various

HP

Power

Sup¬

plies.

This

information

supplements

the

programming

examples

for

the

9825

given

in

Section

III

of

this

manual.

1-2

Table

1-1.

Specifications,

Model

59501A

D/A

CONVERTER

DC

Output

Voitage:

Programmable

in

high

or

low

ranges

within

the

voltage

limits

shown

below.

Output

mode

is

unipolar

or

bipolar

and

is

selectable

via

rear

panel

switch.

High

Low

Unipolar

0

to

9.99

Volts

0

to

+.999

Volts

Bipolar

-10

to

+9.98

Volts

-1

to

+.998

Volts

DC

Output

Current:

10mA

Resolution:

High

Low

Unipolar

10mV

1m

V

Bipolar

20m

V

2m

V

Accuracy;

Specified

at

23°

C±

5°C

High

Low

Unipolar

.1%+

5m

V

.1%+

ImV

Bipolar

.1%+

10mV

.1%+

2m

V

*

Stability:

Change

in

output

over

8

hour

interval

under

constant

line,

load,

and

ambient

following

a

30

minute

warm-up.

H

igh

Low

Unipolar

.04%

+

.5mV

.04%

+

,1mV

Bipolar

.04%

+

1

m

V

.04%

+

.2mV

Temperature

Coefficient:

High

Low

Unipolar

.01%/°C

+

.5mV/°C

.

01

%/°C

+

.1

mV/°C

Bipolar

.01%/°C

+

.5mV/°C

.01%/°C

+

,1mV/°C

Zero

Adjust:

Plus

or

minus

250

millivolts.

D/A

Full

Scale

Adjust:

Plus

or

minus

5%.

Programming

Speed:

The

time

required

for

output

to

go

from

zero

to

99%

of

programmed

output

change

is

250/tsec

(measured

with

resistive

load

connected

to

output

terminals).

*

Stability

is

included

in

accuracy

specification

measure¬

ments

over

the

temperature

range

indicated.

POWER

SUPPLY

PROGRAMMING

Programming

Network

Specifications:

In

the

following

spec-

-

ifications,

M

represents

the

calibrated

full

scale

value

of

the

supply

being

programmed

and

P

represents

the

actual

pro¬

grammed

output.

Note

that

the

full

scale

value

(M)

can

be

any

value

within

the

supply's

output

range

and

is

calibrated

with

the

59501B

programmed

to

its

maximum

high

range

output.

Accuracy

(Does

not

include

power

supply

errors):

Specified

at

23°C

±

5°C.

High

Low

Unipolar

.05%M

+

,25%P

.01

%M

+

,25%P

Bipolar

0.1

%M

+

,25%P

.02%M

+

,25%P

Isolation:

600Vdc

between

HP-IB

data

lines

and

output

terminals.

Temperature

Coefficient:

High

.005%M/°C

+

.015%P/°C

Low

.01

%M/°C

+

.01

5%P/°C

Programming

Resolution:

High

Low

Unipolar

0.1

%M

0.01

%M

Bipolar

0.2%M

0.02%M

Programming

Speed:

D/A

Conversion

Time

plus

the

programming

speed

of

the

power

supply.

GENERAL

Input

Power:

Unit

has

ac

power

module

which

is

settable

to:

100/1

20/220/24QVac

(-13%,

+6%),

48-63Hz,

10VA.

A

3-wire

detachable

line

cord

is

supplied.

Temperature

Range:

Operating:

0

to

55°C

Storage:

—40

to

75°C

Dimensions:

(See

Figure

2-1)

Weight:

Net:

1.82

kg.

(4

lb.)

Shipping:

2.27

kg.

(5

ib.)

1-3

SECTION

li

INSTALLATION

2-1

INITIAL

INSPECTION

2-2

Before

shipment,

this

instrument

was

inspected

and

found

to

be

free

of

mechanical

and

electrical

defects.

As

soon

as

the

instrument

is

received,

proceed

as

instructed

in

the

following

paragraphs.

2-3

Mechanical

Check

2-4

If

external

damage

to

the

shipping

carton

is

evident,

ask

the

carrier's

agent

to

be

present

when

the

instrument

is

unpacked.

Check

the

instrument

for

external

damage

such

as

broken

switches

or

connectors,

and

dents

or

scratches

on

the

panel

surfaces.

If

the

instrument

is

damaged,

file

a

claim

with

the

carrier's

agent

and

notify

your

local

Hewlett-

Packard

Sales

and

Service

Office

as

soon

as

possible

(see

list

at

rear

of

this

manual

for

addresses).

2-5

Electrical

Check

2-6

.

Check

the

electrical

performance

of

the

instrument

as

soon

as

possible

after

receipt.

Section

V

of

this

manual

contains

procedures

which

will

verify

instrument

operation

on

the

HP-IB.

These

procedures

are

also

suitable

for

incom¬

ing

quality

control

inspection.

Refer

to

the

inside

front

cover

of

the

manual

for

the

Certification

and

Warranty

statements.

2-7

REPACKAGING

FOR

SHIPMENT

2-8

To

insure

safe

shipment

of

the

instrument,

it

is

recommended

that

the

package

designed

for

the

instrument

be

used.

The

original

packaging

material

is

reusable.

If

it

is

not

available,

contact

your

local

Hewlett-Packard

field

office

to

obtain

the

materials.

This

office

will

also

furnish

the

address

of

the

nearest

service

office

to

which

the

instru¬

ment

can

be

shipped.

Be

sure

to

attach

a

tag

to

the

instru¬

ment

specifying

the

owner,

model

number,

full

serial

number,

and

service

required,

or

a

brief

description

of

the

trouble.

2-9

INSTALLATION

DATA

2-10

The

59501B

is

shipped

ready

for

operation

on

the

HP-IB.

Before

connecting

it

to

a

controller

and

applying

power,

read

paragraph

2-26.

2-11

Outline

Drawing

2-12

Figure

2-1

illustrates

the

outline

shape

and

dimensions

of

Model

59501

A.

2-13

Rack

Mounting

2-14

The

595018

can

be

rack

mounted

in

a

standard

19-inch

rack

panel

either

by

itself

or

alongside

another

half

(or

quarter)

System-11

module

of

equal

height

and

depth.

All

rack

mounting

accessories

for

this

unit

are

listed

in

paragraph

1-11.

Also,

complete

installation

instructions

are

included

with

each

rack

mounting

kit.

2-15

Equipment

Required

2-16

If

an

HP

controller

is

used

to

program

the

59501B,

the

following

equipment

is

required:

HP

Controller

HP-IB

Interface

Card

ROM

85A,

86A,

87

A

82937A

HP-IB

I/O

9825A

98034A

HP-IB

I/O

General

I/O

Extended

I/O

9816A,

9826A,

9836A

(Standard)

(Standard)

2-17

HP-IB

Connector

2-19

The

HP-1

B

connector

on

the

rear

of

the

59501B

interfaces

directly

to

the

HP-IB.

Figure

2-2

illustrates

the

pin

configuration

of

the

HP-IB

connector

which

is

a

24-pin,

2-1

type

57

micro-ribbon

connector.

One

HP-iB

cable

is

supplied

with

each

HP

computer

and

calculator

I/O

card

package.

Extra

cables

may

be

ordered

separately.

HP-iB

Cable

Mode!

No.

Cable

Length

10631A

10631B

10631C

1m

(3.3

ft.)

2m

(6.6

ft.)

4m

(13.2

ft.)

NOTE

r

SIGNAL

GROUND

24

12

P/O

TWISTED

PAIR

WITH

II

23

:

1

P/0

TWISTED

PAIR

WITH

10

22

10

P/0

TWISTED

PAIR

WITH

9

21

9

P/0

TWISTED

PAIR

WITH

8

20

8

P/0

TWISTED

PAIR

WITH

7

19

7

P/0

TWISTED

PAIR

WITH

6

18

6

**f

R

EN

17

5

l

D108

16

4

0107

15

3

DI06

14

2

DI05

13

1

SHIELO

AIN

SRQ

**

IFC

NDAC

NRFO

DAV

EOI

XX

0104

0103

0102

0101

NOTE:

TYPE

57

MICRO¬

RIBBON

CONNECTOR

(AMPHENOL

OR

CINCH)

X-

SIGNAL

GROUND

**

NOT

PROCESSED

BY

5950IB

HP-18

LOGIC

LEVELS:

GROUND

TRUE,

TTL

COMPATIBLE.

INPUT

LEVELS

(FROM

HP-IB):

1

*

TRUE

<

0.8V

0=

FALSE

>

2.0

V

OUTPUT

LEVELS

(TO

HP-IB):

I

*

TRUE

=

OVDC

TO

0.4VDC

0

*

FALSE

*

+

2.5VDC

TO

+

5VDC

The

HP-IB

connector

supplied

with

this

unit

contains

metric

fasteners

(colored

black),

if

your

HP-IB

cable

connector

contains

standard

mating

screws

(silver),

make

a

conversion

using

the

hardware

and

instructions

included

in

Metric

Conversion

Kit

(5060-0138).

2-19

The

HP-IB

cables

use

the

same

piggyback

con¬

nector

on

both

ends.

Up

to

three

connectors

may

be

stacked

one

upon

another.

As

many

as

15

instruments

(including

the

controller)

may

be

connected

to

the

same

HP-IB.

Figure

2-2.

HP-IB

Connector

are

not

illustrated

on

Figure

2-3.

These

connections

depend

upon

the

particular

power

supply

being

programmed

and

the

type

of

control

desired

(output

voltage

or

current).

The

connections

required

to

program

various

HP

power

supplies

are

provided

in

Section

III,

paragraph

3-43

through

3-50.

2-22

Setting

Addresses

2-20

System

Connections

2-21

Figure

2-3

illustrates

a

controller

(e.

g.,

a

9825A

calculator)

and

a

59501B

unit

connected

to

the

HP-IB.

In

this

case,

the

98034A

interface

card

provides

HP-IB

capa¬

bility

for

the

9825A

calculator

and

is

installed

in

any

one

of

the

three

slots

in

the

rear

of

the

calculator.

The

98034A

card

is

equipped

with

the

proper

cable

and

connector

to

mate

with

the

HP-IB

connector

on

the

rear

of

the

59501B

.

Note

that

specific

connections

between

the

59501

B's

output

ter¬

minals

and

the

user's

device

(e.g.

programmable

power

supply)

2-23

The

listen

address

for

the

59501B

is

selected

by

address

switches

on

the

rear

Of

the

unit.

The

switches

are

factory

set

to

the

suggested

listen

address

of

&

when

the

unit

is

shipped

from

the

factory.

As

shown

in

Figure

2-4,

there

are

seven

address

switches.

The

last

two

switches,

6

and

7

(XX),

are

ignored

(have

no

affect).

Switches

1,4,

and

5

are

set

to

”0"

and

switches

2

and

3

are

set

to

"1"

to

select

a

listen

address

of

Note

that

is

the

suggested

listen

address

and

is

one

of

31

listen

address

possibilities.

The

address

switch

settings

for

each

of

the

31

listen

address

possibilities

are

listen

in

Table

2-1.

2-2

CONTROLLER

(E.G.

9825A

CALCULATORJ

*

■

CONNECTIONS

BETWEEN

THE

59501B‘S

OUTPUT

TERMINALS

AND

THE

PROGRAMMING

TERMINALS

OF

APPLICABLE

HP

PROGRAM¬

MABLE

POWER

SUPPLIES

ARE

DESCRIBED

IN

SECTION

HI

Figure

2-3.

System

Connections

2-24

The

HP-IB

bus

interface

cards

for

the

HP

calcula¬

tors

are

shipped

from

the

factory

with

a

preset

talk

address

of

"U"

and

a

preset

listen

address

of

”5”.

Before

program¬

ming,

write

down

the

listen

and/or

talk

address

of

ail

instruments

connected

to

the

HP-IB.

2-25

Unipoiar/Bipoiar

Mode

Switch

2-26

The

UNIPOLAR/BIPOLAR

mode

switch

is

a

.

push-in,

push-out

type

switch

located

on

the

rear

of

the

unit

beneath

the

output

terminal

strip.

In

the

UNIPOLAR

mode

(switch

is

in),

the

59501B

provides

an

output

range

of

0

to

0.999V

or

0

to

9.99V.

In

the

BIPOLAR

mode

(switch

is

out),

the

59501B

provides

an

output

range

of

—TV

to

+0.998V

or

-10V

to

+9.998V.

The

switch

is

set

to

UNIPOLAR

when

the

unit

is

shipped

from

the

factory.

2-27

Input

Power

Requirements

And

Line

Voftage

Conversion

2-28

The

59501B

may

be

operated

continuously

from

a

nominal

100V,

120V,

220V,

or

240V

(48-63Hz)

power

ADDRESS

SWITCH

.

.

5

.

.

.

l

IGNORED

Figure

2-4.

Listen

Address

Switches

on

Rear

of

59501B

Table

2-1.

Listen

Addresses

and

Switch

Settings

Address

Switches

Listen

5

4

3

2

1

Address

Character

0

0

0

0

0

SP

0

0

0

0

1

!

0

0

0

1

0

"

0

0

0

1

1

#

•

0

0

1

0

0

$

0

0

1

0

1

%

0

0

1

1

0

&

0

0

1

1

1

»

0

1

0

0

0

(

0

1

0

0

1

)

0

1

0

1

0

*

0

1

0

1

1

+

0

1

1

0

0

0

1

1

0

1

—

0

1

1

1

0

0

1

1

1

1

/

1

0

0

0

0

0

1

0

0

0

1

1

1

0

0

1

0

2

1

0

0

1

1

3

1

0

1

0

0

4

1

0

1

0

1

5

1

0

1

1

0

6

1

0

.

1

1

1

7

1

1

0

0

0

8

1

1

0

0

1

9

1

1

o

1

0

1

1

0

1

1

1

1

1

0

0

<

1

1

1

0

1

=

’.

1

1

1

1

0

>

2-3

source.

A

printed

circuit

board

located

within

the

ac

power

module

on

the

rear

panel

selects

the

power

source.

Voltage

choices

are

available

on

both

sides

of

the

PC

board.

Before

connecting

the

instrument

to

the

power

source,

check

that

the

PC

board

selection

matches

the

nominal

line

voltage

of

the

source.

The

operating

voltage

that

is

selected

is

the

one

printed

on

the

lower-left

side

of

the

PC

board

(see

Figure

2-5).

As

shipped

from

the

factory,

the

PC

board

in

this

unit

is

positioned

for

120Vac

operation.

To

select

another

input

voltage

proceed

as

follows:

a.

Remove

power

cable

from

instrument.

b.

Move

plastic

door

on

power

module

aside.

c.

Rotate

FUSE

PULL

to

the

left

and

remove

line

fuse

FI.

d.

Remove

PC

board

from

slot.

Select

operating

voltage

by

orienting

PC

board

to

position

the

desired

voltage

on

top-left

side

of

PC

board.

Push

board

firmly

into

slot.

e.

Rotate

FUSE

PULL

back

into

normal

position

and

re-insert

fuse

FI

in

holder

using

caution

to

select

the

correct

value

for

FI

(125mA

for

100V

or

120V

and

62.5mA

slo-blo

for

220V

or

240V)..

f.

Close

plastic

door

and

connect

power

cable.

2-29

When

the

instrument

leaves

the

factory,

a

125mA

fuse

is

installed

for

120V

operation.

An

envelope

contain¬

ing

a

62.5mA

fuse

for

220V/240V

operation

is

attached

to

the

instrument.

Make

sure

that

the

correct

fuse

value

for

FI

is

installed

if

the

position

of

the

PC

board

is

changed.

2-30

Power

Cable

2-31

This

unit

is

factory

equipped

with

a

power

cord

plug

that

is

the

most

appropriate

for

the

user's

location.

The

replaceable

parts

section

of

this

manual

lists

all

of

the

power

cords

associated

with

this

unit.

If

a

different

power

cord

is

desired,

contact

your

nearest

HP

Sales

Office.

2-32

To

protect

operating

personnel,

the

National

Electrical

Manufacturers

Association

(NEMA)

recommends

that

the

instrument

panel

and

cabinet

be

grounded.

This

instrument

is

equipped

with

a

three

conductor

power

cable.

The

third

conductor

is

the

ground

conductor

and

when

the

cable

is

plugged

into

an

appropriate

receptacle,

the

instru¬

ment

is

grounded.

The

offset

pin

on

the

power

cable

three-

prong

connector

is

the

ground

connection.

In

no

event

shall

this

instrument

be

operated

without

an

adequate

cabinet

ground

connection.

2-33

To

preserve

the

protection

feature

when

operating

the

instrument

from

a

two-contact

outlet,

use

a

three-prong

to

two-prong

adapter

(if

permitted

by

local

regulations)

and

connect

the

green

lead

on

the

adapter

to

ground.

2-4

SECTION

III

OPERATING

INSTRUCTIONS

3-1

INTRODUCTION

3-2

This

section

contains

operating

instructions

and:

programming

information

for

the

59501B

isolated

DAC,

Power

Supply

programmer.

Since

the

59501B

can

be

used

as

a

power

supply

programmer

or

as

D/A

converter

(low

level

dc

signal

source),

operating

instructions

and

program¬

ming

examples

are

provided

to

cover

both

applications.

Additional

information

regarding

use

of

the

59501B

is

provided

in

HP-IB/Power

Supply

Application

Guide,

HP

Part

No.

5952-3990.

3-3

PRE-OPERATIONAL

CONSIDERATIONS

3-4

Before

connecting

the

59501B

to

an

ac

power

source,

ensure

that

the

proper

operating

voltage

(100,

120,

220,

or

240Vac)

has

been

selected

and

the

proper

fuse

is

installed

(see

paragraph

2-27).

Also,

check

that

the

address

switches

are

set

correctly,

the

UNIPOLAR/BIPOLAR

mode

switch

is

set

to

the

desired

position,

and

all

HP-1B

system

cabling

is

installed

(see

paragraphs

2-20

through

2-26).

Connections

between

the

59501B

and

the

user's

device

(e.

g.

HP

Power

Supply)

are

described

in

subsequent

para¬

graphs.

3-5

CONTROLS

AND

INDICATORS

3-6

Front

Panel

3-7

.

The

59501B

front

panel

contains

a

power

on-indi¬

cator,

a

status

indicator

and

four

controls

(screwdriver

ad-‘

justments)

as

shown

in

Figure

3-1.

3-8

The

power

on

(ON)

indicator

(?)

(Figure

3-1)

lights

and

the

59501

B's

internal

supply

voltages

(+15V,

±15V,

V

dc

j)

are

present

when

the

line

cord

is

plugged-in.

3-9

The

LISTENING

indicator

(J)

lights

when

the

59501B

is

addressed

to

''listen''

and

remains

lighted

until

an

"unlisten"

command

or

the

interface

clear

signal

is

received

from

the

controller.

When

lighted,

it

indicates

that

the

59501B

is

enabled

to

process

data

words

received

on

the

HP-IB.

When

it

is

not

lighted,

it

indicates

that

the

59501B

is

inhibited

from

processing

data

words.

3-10

The

front

panel

screwdriver

adjustments

allow

fast

and

easy

calibration

of

D/A

and

power

supply

outputs.

Each

adjustment

is

described

below.

3-11

The

ZERO

ADJUST

(5)

allows

the

59501B

out¬

put

to

be

adjusted

to

0V

±

250

millivolts

when

it

is

program¬

med

to

zero

output.

It

can

also

be

used

to

correct

for

small

offsets

in

power

supply

response

to

programmed

inputs

when

the

59501B

is

used

as

a

power

supply

programmer.

3-12

The

D/A

FULL

SCALE

ADJUST

@

allows

the

59501B

output

to

be

adjusted

to

maximum

(±5%)

when

it

is

programmed

to

maximum.

For

example,

if

the

59501B

is

programmed

to

its

maximum

unipolar

output

in

the

high

range,

the

D/A

FULL

SCALE

ADJUST

is

normally

used

to

set

the

output

to

9.99V.

However,

it

can

also

be

used

to

set

the

output

between

9.49V

and

10.49V

(i.

e.

9.99V

±5%).

The

D/A

FULL

SCALE

ADJUST

is

used

when

the

59501B

is

employed

as

a

D/A

(see

paragraphs

3-73

through

3-80).

When

the

59501B

is

used

as

a

power

supply

programmer,

the

POWER

SUPPLY

FULL

SCALE

ADJUST

controls

are

utilized

to

set

the

power

supply's

output.

3-13

The

POWER

SUPPLY

FULL

SCALE

ADJUST

controls

(COARSE

and

FINE)

(S)

enable

the

user

to

set

the

maximum

output

desired

from

the

power

supply

when

the

59501B

is

programmed

to

its

maximum

value.

These

adjustments

can

be

used

to

calibrate

the

output

of

a

power

supply

to

its

maximum

rated

output

or

to

any

lower

value.

For

example,

a

40Vdc

power

supply's

output

could

be

set

to

20V

when

the

59501B

is

programmed

to

its

maxi¬

mum

value.

In

this

case,

all

999

programming

steps

are

utilized

in

programming

the

supply

from

0

to

20V

with

a

resolution

of

20mV

(approx.).

Calibration

of

power

supply

outputs

is

described

in

paragraph

3-51

through

3-57.

3-1