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59501A/HP

85-1

May

1982

SUPERSEDES:

NONE

Introductory

Operating

Guide

for

the

59501A

D/A-Power

Supply

Programmer

with

the

HP

85

Computer

Section

Page

(J)

Assembling

the

System.2

Calibration.10

Programming.13

introduction

This

note

is

a

guide

to

the

basic

operation

of

the

59501A,

as

either

a

remote

power

supply

programmer

or

a

programmable

low

level

DC

voltage

source,

with

the

HP

85

computer.

Familiarity

with

the

HP

85

and

its

programming

language,

BASIC,

makes

the

examples

more

mean¬

ingful.

The

HP

85's

capabilities

are

best

described

in

the

manuals

listed

in

the

section

titled

Related

Documents.

To

acquaint

yourself

with

the

HP

85,

review

these

manuals

and

use

them

as

a

reference

as

you

gain

experience.

When

you

are

familiar

with

the

HP

85,

this

note

will

enable

you

to

quickly

write

pro¬

grams

that

control

the

59501A.

ieisitedi

Documents

In

addition

to

the

modes

of

operation

described

in

this

note,

the

59501A,

and

HP

85

have

other

useful

capabilities.

The

materials

listed

below

contain

com¬

plete

documentation

for

all

of

these

capabilities.

They

can

be

obtained

through

your

nearest

Hewlett-Packard

sales

office.

59501A

Literature

Operating

and

Service

Manual

(59501-90001)

HP

85

Literature

Owner's

Manual

and

Programming

Guide

(00085-90002)

Quick

Reference

Guide

(00085-90040))

I/O

Programming

Guide

(00085-90142)

HP-IB

Literature

Tutorial

Description

of

the

Hewlett-Packard

Interface

Bus

(5952-0156)

©

Hewlett

Packard

Co.

1982

HEWLETT

PACKARD

The

programs

contained

in

this

note

require

the

following

equipment:

1.

59501A

HP'IB

Isolated

D/A

Power

Supply

Programmer

2.

HP

85

Computer

a.

ROM

drawer

(82936A)

b.

I/O

programming

ROM

(00085-15003)

c.

HP-IB

Interface

{82937A)

3.

For

use

as

a

power

supply

programmer:

The

Hewlett-Packard

power

supply

you

wish

to

program

(see

Table

1).

NOTE:

A

digital

voltmeter

(DVM)

is

necessary

for

pro¬

per

calibration.

The

HP

3465B

or

equivalent

is

recommended.

With

all

ac

power

turned

off:

1.

Make

sure

that

the

I/O

programming

ROM

and

ROM

drawer

are

in

place

in

the

HP

85.

2.

Verify

that

the

address

switches

on

the

back

panel

of

the

59501A

are

set

to

06.

(See

Figure

1).

ADDRESS

SWITCH

\

-X

X

Figure

1.

3.

Insert

the

HP-IB

interface

into

one

of

the

HP

85's

rear

panel

slots.

4.

Attach

the

connector

at

the

free

end

of

the

interface

cable

to

the

rear

of

the

59501A.

Table

1

59501A

Power

Sypply

Conoec

HP

Model

Constant

Voltage

Operation

Constant

Current

Operation

1

HP

Model

#

Constant

Voltage

Operation

Constant

Current

Operation

6002A

6012A

6024A

6111A

6112A

Fig.

4

5

6

6

Fig.

#22

23

24

*

«

6259B

6260B

6261B

6263B

6264B

Fig.

#

29

29

29

30

31

6113A

6

*

6266B

15

30

6114A

7

25

6267B

14

31

6115A

7

25

6268B

13

29

6116A

6

*

6269B

13

29

6177C

»

26

627

IB

15

30

6181C

*

26

6274B

14

31

6186C

*

26

6281A

8

27

8

27

6282A

16

32

I

6203B

8

27

6284A

8

27

1

6205C

9

4

6286A

16

32

1

6206B

10

»

6289A

8

27

1

6207B

8

27

6291A

16

32

1

6209B

11

27

6294A

8

27

1

6227B

12

28

6296A

16

32

1

6228B

12

28

6299A

8

27

1

6253A

8

27

6428B

17

*

6255A

8

27

6433B

17

*

HP

Constant

Constant

j

Mode!

#

Voltage

Current

Operation

Operation

6434B

Fig.

#

17

Fig.#

*

6438B

17

*

6439B

17

*

6443B

17

6448B

17

*

6453A

18

33

6466B

18

33

6459A

18

33

6464C

19

34

6466C

17

34

6469C

17

34

6472C

17

34

1

6475C

17

34

j

6477C

17

34

6479C

17

34

6483C

17

34

6824A

20

*

6825A

21

35

6826A

21

35

6827A

21

35

•This

mode

is

not

available

2

5.

For

operation

as

a

power

supply

programmer:

a.

Find

the

correct

wiring

diagram

below,

cor¬

responding

to

power

supply

model

number,

and

either

CV

or

CC

mode

of

operation.

(See

Table

1).

b.

Arrange

the

barrier

strip

jumpers

on

the

power

supply

as

illustrated

in

the

diagram.

c.

Remove

internal

jumpers

or

components

from

the

power

supply

if

diagram

requests.

d.

Wire

the

59501A

to

the

power

supply

as

il¬

lustrated.

e.

Set

range

switch

on

power

supply

if

applicable.

f.

Before

permanently

wiring

the

power

supply

to

the

59501A,

check

the

power

supply

operating

and

service

manual

for

proper

wiring

technique

and

external

components

which

may

be

needed

to

insure

ripple

and

noise

specifications.

6.

For

operation

as

a

DC

source:

a.

Wire

load

to

59501A

as

illustrated

in

Figure

2.

Figure

2.

Connecting

the

59501A

as

a

Low

Level

Voltage

Source.

0i0j(

EXT

CROWBAR

TRIGGER

6268B

6269B

CURRENT

:

PROGRAMS

OUTPUT

••

VOLTAGE

Of

SUPPLY

I

*

OPTION

J30

PC

BO

(VOLTAGE-

TO

■

"

CURRENT-

CONVERTER

J

■

<^PACTORY

installed

SPECIAL

OPTION

(J30I

REQUIRED

UN

POWER

SUPPLY.

LV

rrogranrirnfiii

5950IA

Al

A2

A3

A4

1

A6

1

..2

_Q.

.2_g_i

d

0

1

Al

A2

A3

AA

A5

GNOCOM

CS/4s

OUT

\.

IN

m

ai2

G_

AI3

_G

rh

®

IF

THE

6002A

IS

EQUIPPED

WITH

OPTION

OOU

MODE

SWITCH

ON

6002A

MUST

BE

SET

TO

CV

OR

LOCAL.

Figure

22.

Figure

23

RESISTOR

AIRJ5

(6I77C,

6I8IC)

OR

A1R52

(61860

MUST

BE

REMOVED,

Figure

24.

Figure

26.

5950lil

I14A

I15A

A8

+

+S

-

S

-

AW

'

rj,

I

1

I

1

/->

I

r~r\

rx

Hi

p

0

0

\j

XT

LOAD

CURRENT

POT,

MUST

BE

TURNED

DOWN.

5950IA

A(

A2

AJ

A4

A5

A6

62Q9B

6294A

6253A

62g9A

6281A

Figure

25.

Figure

27,

EXT

CROWBAR

TRIGGER

Before

programming

a

59501A-power

supply

combination,

a

two-step

calibration

procedure

must

be

performed

to

match

the

particular

power

supply

to

the

59501

A.

A

similar

calibration

is

necessary

when

the

59501A

is

used

as

a

low

level

DC

signal

source.

A»1.

Unipolar

Operation

Unipolar

Constant

Voltage

Programming

Calibration

1.

Connect

the

digital

voltmeter

between

the

+S

and

-S

terminals

on

the

power

supply.

2.

Set

the

mode

switch

on

the

rear

of

the

59501A

to

UNIPOLAR

and

turn

the

POWER

SUPPLY

FULL

SCALE

ADJUST

potentiometers

fully

counterclockwise.

3.

If

the

power

supply

has

a

front

panel

current

con¬

trol,

set

it

to

mid-range.

4.

Apply

power

to

the

HP

85,

the

59501A,

and

the

power

supply.

Allow

a

30

minute

warm-up.

Unipolar

Constant

Current

Programming

Calibration

1.

Connect

a

resistive

load

in

series

with

an

external

current

monitoring

resistor

across

the

supply's

output

terminals.

Refer

to

Section

V

of

the

ap¬

plicable

operating

and

service

manual

for

resistor

values,

power

ratings,

and

CC

test

setup

diagram.

2.

Connect

a

digital

voltmeter

across

the

current

monitoring

resistor.

3.

Set

the

mode

switch

on

the

rear

of

the

59501A

to

UNIPOLAR

and

turn

the

POWER

SUPPLY

FULL

SCALE

ADJUST

potentiometers

fully

counterclockwise.

4.

On

the

power

supply,

set

the

front

panel

VOLTAGE

control

fully

clockwise.

5.

Apply

power

to

the

HP

85,

59501A

and

the

power

supply.

Allow

a

30

minute

warm-up.

Figure

36

is

a

program

for

constant

voltage

program¬

ming

calibration

of

a

59501A-power

supply

combina¬

tion.

It

contains

set-up

and

calibration

routines,

automatic

range

changing,

and

will

prompt

with

an

er¬

ror

message

if

the

voltage

entered

is

negative.

Instructions:

Enter

the

program

and

press

@

.

All

required

calibration

operations

are

displayed

on

the

CRT

of

the

HP

85.

The

maximum

desired

output

voltage

(e.g.

20)

should

be

entered

when

prompted

by

the

program.

The

program

automatically

uses

99.9%

of

the

value

(e.g.

19.98)

to

calibrate

the

59501

A-power

supply

com¬

bination.

To

run

the

program

again,

press

then

(bun)

I

/

iO

!

SO

!

CALiBRAT'ION

FOR

;'J0

!

UNIPOLAR

POWFIR

SUPPLY

^0

!

VOLTAGE

OUTPUT

50

!

60

!

ins»tr'uct:i.ons

70

!

BO

CLEAR

90

I)'J:SP

"Set

the

^•i9S0:i,A

node

siwltch

to

”

100

I)J:SP

"UNIPOLAR,

then

pretf^a

CONT

,

"

110

PAUSE

120

DIBP

"Turn

the

Power

Supply

Full

ScaleAdj

uatwent

pot«

fully

CCW

and

then

press

CONT.

"

»

DIBP

130

PAUSE

140

!

ISO

!

User

enters

MaxlwuM

output

uoltaqe

des

Irosd

.

160

!

170

DISP

e

DISP

"Enter

the

naxlMun

output

vol

t

a

g

e"

180

INPUT

V

190

IF

V<'^0

THEN

BEEP

8

DISP

“NO

NEGATIVE

VOL

TAGES

ALLOWED"

@

GOTO

170

20

0

!

210

!

Resolution

is

calculated

220

f

and

the

MaxinuM

desired

230

!

output

is

changed

to

240

!

99,9%

of

the

voltage

2S0

!

entered

on

line

170

260

I

27

0

D==V/i0()0

280

V=V-D

290

!

300

i

Calibration

routine

3i0

!

320

OUTPUT

706

USING

"#,4D"

;

2999

330

DISP

"Bet

the

Power

Supply

Full

Scale

Adj

ustwent

pots

for

an

output

of

‘;V>

"

Voits.

"

340

DISP

"Then

press

CONT,"

3S0

PAUSE

360

CLEAR

370

OUTPUT

706

USING

"

♦

,

4

D"

j

2000

380

DISP

"Set

the

Zero

Adjust

pot

for

an

out

put

of

0

.

000

Volts."

390

DISP

"Then

press

CONT."

@

DISP

400

PAUSE

4i0

OUTPUT

706

USING

"*,40"

j

2999

420

DISP

"Adjust

the

Power

Supply

Full

Sea

le

l"'ine

Adjust

pot

for

an

output

of"jV}'‘Vo

Its,

"

430

DISP

“Then

press

CONT,

"

440

PAUSE

4S0

DISP

"

"

460

DISP

"CALIBRATION

COMPLETE"

470

END

Figure

36.

Unipolar

Power

Supply

Programmer

Calibration

Program.

The

program

listed

in

Figure

36

may

be

modified

for

constant

current

programming

calibration

of

a

59501A

power

supply

combination.

Current

must

be

substituted

for

voltage

and

the

output

current

must

be

monitored

using

the

above

set-up.

10