HP 59501A Service manual

HEWLETT

MANUAL

CHANGES

Model

59501A

HP-IB

Isolated

D/A

Power

Supply

Programmer

Manual

HP

Part

No.

59501-90001

Make

all

corrections

in

the

manual

according

to

errata

below,

then

check

the

following

table

for

your

^instrument's

serial

number

and

enter

any

listed

change(s)

in

the

manual.

SERIAL

MAKE

CHANGES

Prefix

Number

Ail

—

Errata

1702A

00150-00244

1

1717A

00245-00799

1,2

1815A

00800-up

1,2,3

CHANGE

2:

On

page

6-8,

change

the

HP

Part

No.

of

the

A1U32

heatsink

to

59501-00007.

►

CHANGES:

Change

power

transformer

(T1

Chassis

Electrical)

HP

Part

No.

59501-80090

to

HP

Part

No.

59501-80091.

4-25-78

ERRATA:

On

schematic,

Figure

7-3

(Sheet

2),

in

output

amplifier

circuit,

connect

one

end

of

C22

to

\l/'

instead

of

th

■

On

Main

Board

Assy.

A1

component

location

diagram,

in

+5

regulated

supply

circuit,

add

reference

designation

U32

to

pads

to

the

right

of

C27.

in

Table

5-1,

page

5-1,

change

logic

probe

impedance

to

25kn.

CHANGE

1:

This

change

incorporates

vertically

mounted

variable

resistors

to

make

calibration

easier

and

to

avoid

wiper

jump.

On

page

6-6,

make

the

following

changes

to

the

Replaceable

Parts

Table.

R26

change

to

25k

HP

Part

No.

2100-3282.

R49

change

HP

Part

No.

to

2100-3089.

R61

change

to

25k

HP

Part

No.

2100-3282.

On

schematic,

Figure

7-3

(Sheet

2),

change

values

of

R26

and

R61

to

25k.

ERRATA:

On

page

6-9,

change

the

HP

Part

No.

of

the

line

cord

used

in

the

U.

S.,

Canada,

Japan,

Italy,

and

Spain

to

8120-1348.

SECTION

!

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

59501

A.

Installation

instructions

and

sample

programs

are

also

provided.

The

59501A

allows

HP

power

supplies

to

be

digitally

controlled

via

the

Hewlett-Packard

Interface

Bus

(HP-lB)

from

a

calculator,

computer,

or

other

controller.

The

digital

format

is

bit

parallel,

byte

serial,

ASCII

coded

format.

The

59501A

can

also

be

used

on

the

HP-IB

as

a

digitally-programmable

low

level

dc

signal

source.

Since

the

59501

A

can

be

controlled

(programmed)

by

various

control

devices

such

as

HP

9800

series

calculators

or

the

HP-2100

series

computers,

hereafter

in

this

manual,

the

controlling

device

will

be

referred

to

as

the

''controller'',

except

when

specific

programming

examples

are

provided.

1-3

DESCRIPTION

1

-4

The

59501A

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

(1V

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

—1

V

to

+0.998V

or

a

—I

OV

to

+9.98V

output

range.

The

59501

A'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

59501

A

protect

other

instru¬

mentation

on

the

HP-IB

from

damage

that

could

be

caused

by

power

supply

outputs,

Also,

an

interna!

circuit

ensures

that

the

output

Is

held

near

zero

until

programmed

data

is

received.

Power

supply

programming

is

accomplished

through

use

of

the

59501

A's

programmable

output

voltage

and

its

front

panel

adjustments.

By

making

the

appropriate

connections

between

the

59501

A'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

A'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

59501A

is

programmed

to

its

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

59501A

is

accomplished

through

the

transmission

of

four

consecutive

digits

(four

ASCI!

characters).

The

first

digit

specifies

output

range

and

the

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

59501A

to

produce

its

maximum

output

voltage

in

approximately

250iUsec

from

the

time

the

digital

data

is

received.

Output

current

up

to

10

milliamps

is

available

and

is

automatically

limited

to

protect

the

59501A

and

the

user

equipment.

1-7

HP-IB

CAPABILITIES

1-8

The

59501Ahas

"listener”

and

"acceptor

hand¬

shake"

HP-iB

functional

capabilities.

The

LISTENING

indicator

on

the

front

panel

provides

a

convenient

means

of

monitoring

the

59501

A's

operating

status.

The

59501A

does

not

have:

controller,

talker,

source

handshake,

service

request,

device

trigger,

extended

listener,

extended

talker,

parallel

poll,

and

remote/local

HP-iB

functional

capabilities.

Alt

HP-IB

functional

capabilities

are

described

in

IEEE

Standard

488-1975.

1-9

SPECIFICATIONS

1-10

Detailed

specifications

for

the

59501A

are

given

in

Table

1-1.

1-11

ACCESSORIES

1-12

The

System-ll

cabinet

accessories

listed

below

may

be

ordered

with

the

59501A

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-1!

modular

cabinets

are

fully

described

and

illustrated

in

the

Hewlett-Packard

Electronic

Instruments

and

Systems

catalog.

1-1

HP

Part

No.

Description

5061-0088

Two

front

handies

that

attach

to

each

side

of

3

1/2”

high

cabinets.

5061-0094

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.

1460-1345

Tilt

stand

snaps

into

standard

foot

supplied

with

instrument

—

must

be

used

in

pairs.

5061

-0054

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

pane!

(adapter).

5061

-0076

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.

5061-0055

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.

5061-0096

Support

shelf

for

mounting

one

or

more

3

1

2"

high

units

which

are

half

module

or

quarter

module

width.

Cabinet

depths

need

not

be

equal.

5061-2021

Front

filler

panel

(one

quarter

module

width)

for

3

1

2"

high

support

shelf.

5061-2022

Front

filler

panel

(one

half

module

width)

for

3

1

2"

high

support

shelf.

1494-001

5

Slide

kit

for

support

shelves

mounted

in

HP

rack

enclosures.

1-13

INSTRUMEMT

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

ADDITIONAL

MANUALS

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.

1-2

Table

1-1.

Specifications,

Model

59501A

D/A

CONVERTER

DC

Output

Voltage:

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

lOmV

1mV

Bipolar

20mV

2mV

Accuracy:

Specified

at

23“

C

±

5“C

High

Low

Unipolar

.1%+

5mV

.1%+

ImV

Bipolar

.1%+

10mV

.1%+

2mV

*

Stability:

Change

in

output

over

8

hour

interval

under

constant

line,

load,

and

ambient

following

a

30

minute

warm-up.

High

Low

Unipolar

.04%

+

.5mV

.04%

+

,1mV

Bipolar

.04%

+

1

mV

.04%

+

.2mV

Temperature

Coefficient;

High

Low

Unipolar

.01%/°C

+

.5mV/"C

.01%/“C

+

.1mV/"C

Bipolar

.01

%/°C

+

.5mV/°C

.01%/°C

+

.1

mV/°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

250iUsec

{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

59501A

programmed

to

its

maximum

high

range

output.

Accuracy

(Does

not

include

power

supply

errors):

Specified

at

23'’C±

5°C.

High

l^w

Unipolar

.05%!V!

+

.25%P

.01%1VI

+

.25%P

Bipolar

0.1%M

+

.25%P

.02%IV1

+

.25%P

Isolation:

BOOVdc

between

HP-IB

data

lines

and

output

terminals.

Temperature

Coefficient:

High

.005%M/'’C

+

.01

5%P/°C

Low

.01

%M/°C

+

.01

5%P/°C

Programming

Resolution:

High

Low

Unipolar

0.1%IV1

0.01

%M

Bipolar

0.2%IV1

0.02%l\/l

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:

100/120/220/240Vac

(-13%,

+6%),

48-63Hz,

10VA.

A

3-wire

detachable

line

cord

is

supplied.

Temperature

Range:

Operating:

0to55°C

Storage:

-40to75''C

Dimensions:

(See

Figure

2-1)

Weight:

Net:

1.36kg.

(3

ib.)

Shipping:

1.81

kg.

(4

ib.)

1-3

SECTION

II

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

tiouble.

2-9

INSTALLATION

DATA

2-10

The

59501A

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

59501Acan

be

rack

mounted

in

a

standard

19-inch

rack

pane!

either

by

itself

or

alongside

another

half

{or

quarter)

System-ll

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

calculator

is

used

to

program

the

59501

A,

the

following

equipment

is

required;

HP***

Calculator

I/O

Card

Package

ROM

9820A

59405A

Option

020*

HP-IB

I/O

Math

9821A

59405A

Option

021*

HP-IB

I/O

Math

9825A

98034A

HP-IB

I/O

General

I/O

Extended

I/O

9830A

59405A

Option

030**

HP-IB

I/O

*

Includes

Peripheral

Control

M

ROM

Includes

Extended

I/O

ROM

***

If

an

HP-2100

series

computer

is

used

as

the

controller,

the

5931

OB

HP-IB

Computer

Interface

card

is

required.

2-17

HP-IB

Connector

2-19

The

HP-IB

connector

on

the

rear

of

the

59501A

interfaces

directly

to

the

HP-IB.

Figure

2-2

illustrates

the

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

Model

No.

Cable

Length

10631A

10631B

10631C

1m

(3.3

ft.)

2m

(6.6

ft.)

4m

(13.2

ft.)

NOTE

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.

2-20

System

Connections

2-21

Figure

2-3

illustrates

a

controller

(e.

g.,

a

9825A

calculator)

and

a

59501A

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

59501

A.

Note

that

specific

connections

between

the

59501

A’s

output

ter¬

minals

and

the

user's

device

(e.g.

programmable

power

supply)

SIGNAL

GROUND

24

12

P/0

TWISTED

PAIR

WITH

II

23

11

P/0

TWISTED

PAIR

WITH

10

22

10

P/0

TWISTED

PAIR

WITH

9

P/0

TWISTED

PAIR

WITH

8

21

20

9

8

P/0

TWISTED

PAIR

WITH

7

19

7

P/0

TWISTED

PAIR

WITH

6

18

6

'

..fREN

17

5

LD108

16

4

Dior

15

3

0106

14

2

DIOS

13

1

¥r

SIGNAL

GROUND

SHIELD

ATN

SRQ

IFC

NOAC

NRFO

DAV

EOI

0104

0103

0102

0101

note;

type

57

MICRO-

RIBBON

CX)(^CT0R

(AMPHENOL

OR

CINCH)

**

NOT

PROCESSED

BY

5950IA

HP-IB

LOGIC

LEVELS;GROUND

TRUE.TTL

C(»^PATIBLE.

INPUT

LEVELS

(FROM

HP-IB):

1

«

TRUE

<0-8V

ei»FALSE>2,OV

OUTPUT

LEVELS

(TO

HP-IB):

1

•

TRUE

«0VDC

TO

0,4VDC

0-FALSE>’-r2.5VDC

T0-f5V0C

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

111,

paragraph

3-45

through

3-52.

2-22

Setting

Addresses

2-23

The

I

isten

address

for

the

59501A

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

HP 59501A Service manual

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