Datron Instruments 1030 Service manual

(i)

OPERA

TING MANUA

for

DA TRON MODE

True

DIGITA L

RMS

VOLTMETER

lnstrument

L

103 O

L

Designed and

DATRON METEOR CLOSE,

NORWICH

NORWICH,

Telephone:

850001 lssue

Manufactured

ELECTRONICS

AIRPORT

INDUSTRIAL

by:-

LTD.,

NR6 6HO.

0603412126

2

ESTATE,

(ii

)

CONTENTS

Section

1 GENERAL

FEATIJRES.,..

MECHANICAL ELECTRICALDESCRIPTION

Bandlimit Filter

AnaloguetoDigitalConversion....

SuppLyLeadandEarthing ......11

OPERATION

Special

2

1.1

1.1.1 Options

1.2

1.3

1.3.1 High Stability Preamplifier

7.3.2

1. 3. 3 RMS L.3.4 Integration

1.3.5 I.4 SPECIFICATION

1.4.I Specification Verification

INSTA LLATION

2.I IINPACKING

2.2 INSTALLATION

2.2.1 Voltage

2.2.2

2.2.3 Input

2.3 CONTROLS....

.

2.4

2.4.1 Using the GUARD Terminal ...

2.4.2

TitLe Page

INFORMATION

DESCRIPTION

DC Conversion .

to

...,

AND

Tappings . ...

Connections... ......I1

Notes:

OPERATION

INSPECTION.. .. ....

AC

Coupling ...

....I

....2

.......3

. . . .. .3

.....

. . . .4

.,....

...5 ...

........9

.

...

. ..12

,.....

......

......17

3

5

7

10

IO ].0 10

L4 L4

3

OPTIONAL

3.1 OPTIONS

3.1.1 Description....

3.I.2 Connections..

3.1.3

3.1.4 Control Lines

3.I.4.1

3.1.4.2

3.1.4.3 Hold Reading....

3.I.4.4 Read Command

3.1.4.5

3.

1..1.6

3.: OPTIONS

3.:l OPTION

3.3.1

3.3.2 Method

3. 3. 3 Pin Conneetions

3.3.3.i Rang.eCrrnnectii'rns...

3.3.3.2

3.3.4 Charactelistics trf

3.3.5

REMOTE OPERATION

(BOl)

Examplesof BCDCoding

PrintCommand.. Signal Integrate.

Delayed Command '0r

State

(BOl)

(P01):

Description....

of

lrr,ruction Connections ...

llemol.elnclication

(BOla)

and

.

Reference

(BO2a)

and

REMOTE PROGRAI\'IMING

Operation . . .

: I

..

:

Use

-2-4-8

THREE

BCD OUTPUT ..

STATE LOGIC

OUTPUT

......20

...,..

....21

.....

....

. .

.

...

.....'

18

18 18 18

20

2l 2I 21 22 2:) 2?' 23 23 2:l 24 24 24 2it ?5

(

iii)

Sectiorr

4

C' O N T E N

TECHNICAL Dt,S('RIPTION

4.1

GENERAL

4.2 A.C.TOD.C.CONVERTER

4.2.1

PreamplifierandScaling...

(contintred)

T S

Title

.. .. ....26

...,..26

....21

4.2.2 TrueRMSConverter .....30

4.2.3 Switching and

Optional

Power

Supply . . . .

4.3 ANALOGUE-DIGITALDISPLAY ....,..35

4.3.1 AnalogueSection

4.3.2

DigitalSection.

SPECIFICATIONVERIFICATION

5.1

5.2

5.3

5.4

5.5

5.6

5.7

DESCRIPTION..

INSTRUMENT PROCEDURE... PROCEDURE... PROCEDURE... PROCEDURE...

REQUIREMENTS

A.C.PERFORMANCE. D.C.PERFORMANCE, L.F.PERFORMANCE BANDLIMITFILTER

USINGATRANSFERSTANDARD.

......35

........39

.....43

.......44

........46

.......47

Page

26

. .34

. ..43

...46 ...47

MAINTENANCE.

6.r

6.1.1

6.2 ROUTINE CALIBRATION.

6.2.1

6.2.2

6.2.3

6.2.3.1

6.2.3.2 D.C.

6.2.3.3

6.2.3.4

6.2.3.5

6.3

6.3.I

6.3.1.1 lntegration

6.3.L2

6.3.1.3

6.3.1.4

6.3.1

6.3.2 A.C.

6.3.2.1 (r.3.1.2

6.3.2.3

GENERAL

Removal

General Test Procedure

REPAIR

A D Board

.5 Overload

of covers - access

Equipment.

Zero

Adjustment. 'Turnover'Calibration.

FLrll ScaleCalibration.....

A_-D Converter

FullRangeAdjustments....

AND COMPONENT

ZeroCalibration.

Full Scale Calibration

Linearity and Display

check

to D.C. Board General Zero Drift compensation. . Prearnplilier

Procedures

Period

H.F.

to components. . .

. 49

. .

. 50

Calibration.

REPLACEMENT.

lbllowing repair

Calibration

.......

Checks

-

Procedures

compensation

tollowing repair.

.

. .

.

... . ..

......

48

48 48

49 49 50 50

5l 5 I 5l 52 53 53 53 53 53 54 54 54 54 55

(iv)

CONTENTS(continued)

Section

7

8

OTHEROPTIONS....

COMPONENT

7.1

7.2

409106 409109A

400025 400348 400058

400349 400023

4O9l17

ANALOG REAR

OUTPUT

INPUT

LISTS

to D.C.

A.C.

Digital

Analog Display

BCD

BCD Option BCD BCD Remote Filter Delay

to

Board

Option

Option Option

Programming

Options

Time Options

Converter

BOI BOla BO2

BO2a

Board

Converter

Option

. . .

Title

Board

POI

Page

56

56 56

.

9

.

BOARD

LAYOUTS

4O91061439lO5 4O9lO9Al439l06

4000251430006

4003481430348 4000581430042 4003491430349 4000231430002

4091l7/430001

CIRCUIT

AND

to D'C.

A.C. Analog DisPlaY BCD OPtion BCD BCD OPtion BCD OPtion

Remote

to Digital

Board

Option

Programming

DIAGRAMS.

Converter

BOI BOI a .

BO2 BO2a

Board

Converter

. . -

Option

.

. .

Board

POI -

(v)

APPENDICES

COMPONENT LISTS CIRCUIT

II,I,IISTRATIONS

DIAGRAMS

Figure

I

2 3

A a

5 6 7 8

I

10 11 72 13 I4 15 16 17 18 19 20 2L 22 23

z4

Title

Simplified Block Diagram

Functional Mains Guard TerminaI Connections

eOIiIlANo' & ffi

rr rr rr rt r'

?r

Option

Analogue to

Simplified Diagram of Preamplifier and

Further Simplification of Preamplifier and Simplified Diagram of Precision Rectifier . . . Simptified Diagram Simplified Diagram of L. F. Filter Dual-Slope Integrator

Integrator

Block Counter

Analogue

Diagram, Analogue/Digital

Transformer

Tappings . . .

...

waveforms

rr

il ?r rt

(P01),

Diagram, Digital Section

Sequence Summary

Simplified

D.

C. Convertor,

Timing Diagram

Output / Rear Input Connections . .

Circuit

of

|-wave

Switching

Block

Rectifier

.

Schematic

Convertor

Scaling

. . . .

(delayed)

(

....

Scaling

.

tr

Page

4

5 10 t4 15 15 15 16 16 2l 22

.

)

22 24 26 27 28 30 31 33 35 36 39 42 56

-1-

1. 1

Mean and non-sinusoidal shortcomings true r.m.s. over Among signals, of input signals.

a frequency the l\Iean capability, involving

FEATTIRES

Model 1030

Square

currently available

these is its accuracy

its

The utilization

Square

complex

Digital

sensing

of

thermal r. m. s.

value

exceptionally rapid

range of

value

in

control

GENERAL INFORMATION

RMS Voltmeter

circuit

waveforms.

of an input

of all-electronic

0. 01 of

engineering,

or distorted

for

waveform. It offers

instruments

at

Hz

to

the input waveform.

waveforms.

SECTION

utilizes an entirely

the accurate

The

circuitry was developed

to d.

c. convertors, by directly

in severaI important

extremely low frequencies

response

1 MHz, displaying

noise and

and

circuitry enables the Model 1030 to operate over

vibration studies

1

measurement

the user significant advantages

its accuracy

either the

It opens

new

new type of True Root

of both

areas of measurement. even with high over a wide

Root Mean

fields

sinusoidal

to overcome the

computing

dlmamic

Square

measurement

of

in

and

any application

the

crest

factor

range

or

Reading indication with highly-efficient filter to

provide

high visual contrast

is by

means of an integrating analogue to digital convertor

cold-cathode seven-segment displays. These are

under all

normal lighting

conditions.

mounted

equipped

behind a

polarising

-2-

1. 1. I

extend

(A01)

(R01)

(

D01) A

(

F01-F04)

-

a)

(BOl

and

Options

A

number

the versatility

j)

BOla)

of optional

Analogue full-range

Rear normal

fourth

when

A

number

see SPECIFICATION,

Combinations Electrically range rear-panel are

of

output

input.

input

terminals

front-panel

display

operating

of

and

function

connector.

provided

facilities

the

Model 1030.

gives

digit may

at

alternative

of

normal

isolated

for readings

a l-volt

may

terminals.

a low

Section

mode

BCD

in 1-2-4-8

may

be specified

d.

c. full-range

be specified

percentage

integration

1.4.

and

LF

mode filters.

outputs

External

at

give

TTL

hold

up to 20

at

the time of

as

an alternative

give

to

of full-scale

response

remote

compatible

command and

per

times are available,

second.

ordering

output for

improved

input.

indication code,

from

print

to

any

to

the

resolution

of reading,

a 50-way

facilities

(BO2and

(P01)

BO2a) At

include that a single disable

logic to

Isolated remote selected

small

the system

additional

the added

the BCD

highways,

from

cost to

versatility

line

on

the

output

the Model

bus-bars

programming

a remote

Option

50-way

completely. When

1030

without

point

(801)

of 3-state

connector may

may be left

interfering

enables all ranges

using TTL

the Systems

logic.

togic leveis.

user may

In effect,

grounded

be

multfptexing

permanently

with

other

and functions

this means

to

is used

connected

peripherals,

to be

on

1.2

NIEC]IANICA

L

O

DESCRIPTION

Although

irrstruurents.

knocks

rorrgh

clrrying

the

N{odel is houscci

it

of indtrstlial

handle to be

'A

rack-ntounting

part

installed

as

of a system.

The detachable sheathed 3-pin cable of CEE

cable

socket. The

Publication 22

All

components,

rigidly-supported

quality

and

1,3

The selectable selectable device. various

necessary

BLBCTRICAL DESCRIPTION

instrument comprises

low-pass bandlimit 3-pole integration

A simplified block diagram,

sections.

quite

1030

in a rotrrrst

usage.

used

legitinrltely

heavy-gutrge alunrinittnt

hanclle-pivots

The

prop-stancl

as

a

conversiol kit is available

supply-lead

in accordance

provided,

with BS 6500,

complete cable

and IEC

including

320.

those

r:lainrs its

cater

to

comprises

permanently moulded to

assembly complies

of the

power

circuit boards. The components

to ensure

long and trouble-free

precision

a

filter, an

filter and

wideband

r.m. s.

an analogue-to-digital

1 , illustrates the

Fig.

place

atttougst

desigttc'cl

case

fittecl with

are

for a converriettt

pennit

the Model

two

supply, are

used

service despite

preamplifier

computation

precisiott

latch nrecltatristrts

laboratory

withstatrcl tlte

to

etrat'rling

viewirtg angle.

pernratrently

be

to

1030

metres

of 3-core

a fully-shrouded

with the

requirements

mounted on two

are

all of the

nature

arduous

with a

section, a two-speed

convertor/display

functions of

the

P.

V. C.

use.

1 Hieh

1.3.

preamplifier

The with low overcomes

on low

noise

the

ranges,

arrangement

bias . .

push

buttons

appropriate

I.3.2

circuit The

equivalent

an

Bandlimit

preamplifier

The

to reject

filter has a

frequencies

Stabilitv

a bandwidth

and

necessity

resulting

allows

even

.

the

on the

or, when

isolated

programming

Filter

high

single

rectangular

specified

be

may

Preamplifier

combines excellent

in

excess

a.c.

for in only

coupling

one d.

measurement of

10 mV

Option

range.

P01 is incorporated, by

lines.

followed by

is

frequencies,

pote

(-6

bandwidth

at

a low-pass feature

a

dB/octave)

for Gaussian

time of ordering.

the

performance (2

d. c.

of 3 MHz.

after the

blocking capacitor

c.

preamplifier

a.c. voltages

All

switching

fitter which can

particularly

and is

normally noise of

The very

at the

with up to

is by

apptying

useful

-3

15.7 kHz.

vY/oC,

low offset

when

input.

1kV

means

TTL

switched

be

noise

in

at 10

dB

pA/oC)

2

drift

measuring

This

d.c.

of

of front

panel

levels to the

into

measurement.

kHz,

giving

Non-standard

'M

r--4nn,/\-----c.

.l

Lov

-t

GUARD

I

GUARD SHIE

LD

-J l.

)

N

OC COUPLED

ATTENUATOR

RECTIFIE R

-AMP

PRE

-

| "o"o.,^r',

\

+

-4-

ION

PRECIS

RECTIF IER

3-POLE

INTEGRAT

FILTER

ION

@

PROGRAMMING

1.3.3

OR

swtTcHEs

RMS to DC Conversion

RANGE + FUNCTION

The RMS Module utilizes all solid-state of thermal The output waveform from precision In this unit the Vf, to

Output

The

output is averaged

r. m. s.

rectifier

square

produce

an

voltage Vo

to d. c. convertors

preamplifier

the

circuit,

and

then applied as

of the input voltage

output Vo.

takes

the following

in

the Integration Filter

FIG.1

circuitry to overcome

with their inherent

is, first full-wave

one input,

Vin is

form:

to

computed

give:

t. 139

DISPLAY

the shortcomings

timited dynamic

rectified

Vin, of the RMS

relative

Vin2

uo=w

Vi"t

--

uo=w

a second input

to

BCD OUTPUTS

(oPTtoN

range.

by a

Module.

BO1)

In the

The

r.m.s. mode the feedback

averaged output therefore

This is the,same as:

From the mode, the law

circuitryto

of the

input waveform either thermally

the wide dynamic

In the

is derived

foregoing

second

the r.m.s.,signal level,

Mean from

a separate

input Vf is the overall output voltage,

range

Square

loop is

closed

so

that:

comprises:

explanation it will be appreciated

without explicitly

or electronically. Herein lies the

of Model 1030.

mode

mean

feedback loop

the

square

is broken, and the

reference voltage.

=

Vo

Vf

Vin2

==-

=--

!6

i. e. the

that,

scaling

thus

generating

r. m. s.

in

r.m.s.

the

square-

the

square

the

second input Vf

of

key

Vin.

to

-5-

1.3.4

(or

atlowing

his

for significant D. C. COUPLED desirabte integration

its response

to filter

The

Intesration

The integration

programmable) response

the user

own

Model

application.

components

to

time,

1030 has

to choose

response

select this

thereby

time. minimize

Option

filter

to

normally

capability.

3-pole active

filter

is a

modes,

the

If, for example,

0.'l-Hz is required,then

at

time

tow-frequency

reducing

an effective

An alternative

response time

settles to

+0.1%

for which

low-frequency

best

wilt be

150

Option

statistical

integration

requirement

within

device having

various

accurate

seconds.

take

to

errors

time

rapid

when

a

15

cycles

Options

capability

measurement

Option

for

F02 is

Additionally,

advantage

in noise

noise

may be

read rate

its lowest-frequency

of

INTEGRATOR

CAPACITOR

IIMING

switch-selectable

two

of a

it

longer

ordered

signal with

may be

or response

necessary

of the

measurement.

measurements,

integration-

to select

an

required.

is

time

and

effective

equal

the

*uu

REF

PULSE

TIMINO

VoITAGE

t

FROM

ACROSS

CLOCK

C

POLARIIY

RESET AI NULL

SIGNAL

INTEGRAT

ION

Frc,?

(NORMALLY

AS SHOWN)

REFERENCE

INTEGRATION

1.3.5

obtained

Analogue to

The choice

from the

of

by considerations

necessity

the

and

measurement.

epor

d. c.

voltages

low-le..'el

mode

DiFital

circuit

RMS

Module,

Conversion

for conversion

used

to

of common-mode

its rejection

for

By

greatty

be

cari

digital

rejection.

well

is a

using

Guard

reduced,

of the

was

form

The

understood

Shield techniques,

the

and

analogue

output

signal

governed, amongst

phenomenon

of life

fact

of eomrnon

in the

any common

remaining

superimposed

V5,

other factors,

mode

field of

a.

c.

-6-

wavefortl integration

purpose directly

give

to timing integration

state

input

capacitor

and transferred

the input

of is directly period voltage across and the

totally

metl-rod

Fig.2

At

fed as a

reference

shows a

of this

proportional

a 5-volt

pulses,

amplifier. Capacitor of zero change, voltage.

acquires a

C

the end of 20

signal..

proportionat

which,

strobe

resorting to a

rejected

part

FR

to

The signal

to

in turn,

capacitor

voltage,

by

analogue-to-digital

of

simplified

of the circuit

the

to

signal. This is

resistor R connected

and now commences

charge

msec,

an accurate

The

to the

is

pulse

and

functional

input voltage.

integration

proportional

resistor

5-volt

length of time

state of charge

proportional

C reaches

to the

reset the circuit

technique

cotrversion.

diagram of the convertor

is

convert the

to

apptied via electronic

to the

C always

period

R is disconnected

reference

it takes

to the

zero is

display circuitry.

similar

The

virtual-earth

starts

to charge

lasts

Vo.

to

acquired

input

signalled

ready

to the commonly

signal

input

1-volt

source

to

FR signal

integration

the

at a rate

up

for exactly

from the

of opposite

discharge capacitor

during

voltage

a

by

same

The

for the

%

switching,

input of

20

incoming

the signal %. pulse

start

from the

pulse

of the

used dual-slope

section.

into a time-period

is first

controlled

a very

period

proportional

msec,

polarity

instant that

The

is

next timing

The

amplified

high-gain

from

to

during

signal

to that

zero

C to

integration

Null

used to

Detector,

by

a

the

which

disconnect

time

volts

the

pulse.

In the integration ensures

capacitor

that

untikety

period,

the

and eliminates

C

event

the

reference

of capacitor

Detector

NuIl

potential

possibility

all

C acquiring

incorporates

is always

of the

of f lock-up'.

a reverse charge

polarity-sensing

a

correct

polarity

during

circuit;

discharge

to

the

signal

this

-7-

I.4

Ranges:

Overrange:

Accuracy:

SPECIFICATION

10.00 mV, 100.0 10O7,,(i.e.

(Maximum

90

days duration Subject to frequency/voltage Sinewave less add 1.5

Ranges

100

mV

1999

input 1000

ppm/volt

*

1000 V:

l0mV(>l00pV):

Ranges 100

mV - 1000 V:

l0

Ranges

100

( >

mV

mV - 1000 V:

100

mV,

1.000 V,

Full

Scale on all ranges

V).

at 25oC

than 108 Volt

above

+

300 volts

Up to 5 kHz

0.1%R

0.2%R+0.1%FS

kHz

30

0.3%R + 0.2%FS

pV):

3.0%R

300

3.0%R + 2%FS

50C, less

Hertz. e.g.

kHz

10.00 V,

than

limitation:

+

0.05%

to 100 kHz

+

0.2%FS

to I MHz

100.0 V,

except 1000 V.

90%

RH.

100 volt

(4

I MHz

5 kHz to

FS*

0.2%R + 0.1% FS

0.5%R

100 kHz to

2.0%R (Typ.5%

*For rcad.02%FS

1000

kHz

30

+

O.l%FS

300

+

0.3%FS to

500

option D0l

V.

kHz

kHz)

Temperature

Internal

Coefficient :

Noise:

oC

tenth

One

It is impossible to ,rro 6ll" l,o*est ranges

generated

MAINS

l. mains pletely

less

than about I Megohm. The standoff

be up

Wideband random noise in

2.

reducing represents a noise level of

The on the lowest ranges. lt should be noted however, that because the instrument is true RMS the noise considering a signal S and the

Suppose is 80 microvolts

of

accuracy rating

noise.

This noise is

LINE FREQUENCY common mode

transformer and coupled to

removed if

to about 120

less

to

effect of both

the

Guard

microvolts.

than 30

0.3rrV

RMS

signal

l\/W

these

=

is only 300 microvolts and the

per

from

is referred to true earth through any impedance

microvolts when bandlimit is depressed,

noise

does not normally

noise

+F

\A'

t 3 pV/'C

two sources as

guard.

input

the

sources

is that it is impossible to reach

level N,

1030 due to internally

on a

follows:-

generated

noise

effect

The

error due to this

stage

then the RMS is

of this noise is com-

of

about

upset the

80 microvolts

wideband

the

in

source

accuracy because

may

which

given

by:

internal

noise

zero

Crest

Common

Reiection:

Factor:

Mode

RMS

error being only 10.5p

The

5:1 at 2'5:1 Holds

Greater

full range input.

at 10070 overrange.

over entire

than 90 dB

=

v900001Tm0

=

310.5p volts volts

frequency

from d.c. to

or .05%FS.

range.

50 Hz.

-8-

Impedance:

Input

Maximum Voltage:

Inteqration Response:

NORMAL:

LF MODE: Option

Option Option Option

Input

Filter

F01: F02: F03: F04:

MO

I

shunted

(50 pF,

Signal A.

D.C. Coupled:

Signal

Guard to

Maintains frequency

Hi to

Coupled:

C.

Lo

by 20

Option

Signal Lo:

to Guard:

Earth:

full accuracy provided

Lowest* Specified Frequencv

40 Hz lHz

L0 Hz

0.I Hz

0. 01 Hz

350.0 Hz

pF.

R01)

1500 V 1500 V

250

500

D. C.

1000 volts

pk,

20 Hz to 100

pk,

d.c.

volts.

peak.

volts

down to

COUPLED

Settlins

0.IVo of

to

Final

300

Value

msec

15 sec

sec

1.50 150 sec

sec

1500

msec

50

peak.

to 100 kHz.

the

Time

kHz.

lowest

selected

is

Accuracv Degradation

+0. +0.

specified

below

1% FS

FS

570

30 Hz.

Filter Combinations

Bandlimit

Filter:

OPtions

Mean

Square:

D. C. Coupled:

COMBINATIONS

FILTER

Normal

Hz

40

40 Hz

ts

10 Hz

n

10

Hz

1Hz

E

*

Multipty

asymmetrical

Limits upper

(Single

Other

pole

filter frequencies

LF Mode

1Hz

Hz

10

lHz 01Hz 0lHz

Lowest

Specified

waveforms.

frequency

rectangular

are available. Displays the

True Mean

Error is less than twice

Button Responds

waveforms

Depressed:

to the

true

thus:

r. m.

FYequency

response

to

bandwidth,

within the

Square

the

value

appropriate

s. value

F H

I

J

10 kHz L5.7

band

of the

Normal

1Hz

01Hz

350 Hz 350 Hz 350 Hz

for

2

by

(-3

kHz.

l-00 Hz to

input

r.m.s.

d. c.

LF Mode

0.01 Hz

0.01 4O

10 Hz

1Hz

grossly

+0.5

dB

)

100

waveform.

error.

a.

and

Hz Hz

dB).

kHz

c.

Button

Not

Responds

waveform

input

Response:

F.

L.

Note: than

The

1000 V

Depressed:

to the true

only.

Normally Other

max. input

pk (d.

c.

s. value

r. m,

OPtions

voltage

+

a. c.

-3

pk)

dB at

when

of the

0.8 Hz

available.

a.

c.

frequencies

at

a.

coupled

c.

(0.

l%o at

coupled

below

30 Hz)

must be

20 Hz.

less

-9-

Beadine

Rate:

BCD Output:

Remote

Proqramming:

Power Supplvz

Operating Temperature:

Storage Temperature:

Dimensions:

Internal:

Options

and Function. code.

provided

are

Option remotely

logic.

-255

205

Specify

3 readings

(BO

I

BO

,

1-2-4-8

External hold command

for

readings at

(P01):

Enables

progremmed

105-127

V,

/sec.

I a, BO2,

*ve

any range or function to

V, 48

BO2a): Reading,

TTL compatible

True,

print

and

up to 20

using

per

+ve

True, TTL compatible

to 44OHz.

line frequency and voltage when ordering.

Consumption: Approximately 10 VA.

OoC

-25oC

Height: 90

+50oC,

to

+70oC.

mm

(3.5")

Width:

224 (9.9")

Range

facilities

second.

be

mm Depth: 330 mm

(13")

Weieht:

Shippine Weieht:

Panel Mountins:

L. 4. L

accuracy is procedures

periodic

Section 6, MAINTENANCE.

in

Specification

A

checking

check

Verification

routine to ensure that the instrument

given

Section

in

suitable for

are

of instrument calibration.

(8.8

4 kg

lb) net

4.6ke(10Ib)

panel

hardware

mounted

Additional to be

SPECIFICATION

5,

incoming

gross.

is available

in

inspection

Full

enable the

to

rack.

a standard

19"

is working

VERIFICATION.

purposes,

calibration

procedures

instrument

within its

The for

or

use

are

specified

checking

a

as

given

-1

0-

2.r

UNPACKING

Every

instrument will

new however,

provide,

an

and our

hazards of

orders.

Should

fact will

the

Unpack

panels,

push

immediately.

2.2

INSTA

AND INSPECTION

is taken

care

reach

economic

level

LLATION

in the choice

you

in an unblemished limit of

the

to

protection

road or rail transport.

your

instrument have

probably

instrument and carefully

the

visible as external

be

buttons, terminals,

LLATION

SE

CTION

AND

packaging

of

degree of

more than adequate

is

packaging/protection it is desirable to

Special export

subjected to

been

damage to

examine

etc. If

any damage

2

OPERATION

materials

factory-fresh

to cater

packaging

is

excessive

shipping carton.

the

the exterior

is found,

to ensure that

condition.

There is,

for all the

provided

mishandling

for overseas

in transit

for damage notify the

Carrier

your

normal

to case,

Unless

ready

2.2.L

105to windings note the

otherwise specified

for immediate use with 205

Voltage make the instrument

To

I27V,

of the

tags

panel

it is

away from the

winding

+\

c\

P

(See Section 6.2,)

to the toroidally-wound

desirable to

the two

primary

to the

rfinishf

BLACK

range

primary

the

to

remove

instrument

windings

(Brown)

and

the

four

as

are

ORA N GE

Fig.3 Mains transformer

ORANGE

taPPings

-1

1-

Remove

supply i. e. Red Orange to

2.2.2

the link and reconnect

is applied across

should

Supplv

As

already

form

joined

be

Neutral

the

Lead and Earthins

described

rstart'

the

to Black

input.

in fitted with a moulded-on 3-pin instrument and should

specified

code

When

that the

be

connected

a

cartridge

instrument

in 8S4410.

connecting the

case

to the

supply-line

fuse, this shouldbe replaced by one of

It should be noted earthed, measurements

potential,

none of the front-panel

to be

(See

Section

pushed

be

viz. Brown = Live

supply

shouldbe

that although it

made

on circuitry

2.2.3).

parallel

the two

and

form the

to

Section

windings

'finish'

1.2. the

in

of both

input; Brown

Live

2-metre

socket. This fits the

firmlv home. The cable

Blue = Neutral Green/Yellow

to

a

suitable

lead

earthed via

earth by using a

=

plug,

the YelloVGreen

3-pin

low-current rating,

is recommended that the

terminals

are

connected

floating at a considerable

so that the incoming

windings

supply lead

receptacle

conforms

SuPPIY

plug.

Earth

is strongly

it

If the

the case.

to

shown in Fig. 3.

as

should

is

at

the

to the

joined

be

permanently

rear of the

colour

recommended

earth

wire; this

plug

used

incorporates

say 1or 2 amperes.

instrument case

This enables

level above

earth

to

should

should be

In these circumstances

elevated to

be

can not

only

suppty mains, but also the

the

covers.

2,2.3 Input

Three

Lo and

Hi, may be

spacing

f;" Note:

Signal

FuIl

input terminals

signal input terminals

Guard.

made using

between centres,

following

The

Hi to

D. C.

A. C. Coupled:

SignaL Lo

Guard

detaits

dangerous

Connections

These terminals

4 mm banana

input

Signal

to Guard:

to

of the

and the circuit

Lo:

Coupled:

Earth:

recommended methods of

it should be

potentials.

remembered that the

For this

signal input leads, before

are located

maybe

plugs.

on the

used

The terminals

enabling double or triple

voltages

must not

1000 volts 1500

V

1500

V

200 volts

500

volts

under test

be exceeded

peak.

pk,

d.

c. to

pk,

20 Hz to

peak. peak.

given

are

internal

reason it is

safest to

removing the

front

as

panel

tbinding-postst,

are

banana-plug

under

marked respectively

mounted on standard

adaptors to

any circumstances:-

100 kHz.

making connection

Section 2.4.I.

in

guard

shields

disconnect

instrument

or connection

be used.

between

the

-12-

2.3

ON/OFF

RANGE INDICATION

CONTROLS

LIGHTS

push

A

at the isolates the

of the mains

is disconnected.

Although no

so arranged that when at when no numerals are

Immediately to the

tights

button

left

least

are fitted to illuminate

switch with

of the display

mains supply live from

fuse

and socket,

one

tSupply

part

On'pilot

of the

right of the

v mV

The legends are

interpreted

be

can

necessary in order

conectly

alternate

above

the input

which remain

the mains

display

visible.

v2

FR

as being

ON/OFF

the instrument,

light is fitted, the circuit is

transformer

will always be

numeric

one of the

uction

terminals.

with

live

unless

display, following

is mounted

It

completely

the exception

the supply-lead

is energized, glowing,

four indicator

even

legends:-

mV2

FR

that the

either

numeric

volts or millivolts.

display

PUSH

BUTTONS

A row of eleven

the only

should

it

button

the SQUARE

RANGE

operational

controls.

be understood

is depressed.

no! depressed.

button

is

Y2

FR

push

buttons, each clearly

the labelled function

that

i.e.

The six

mV2

or

FR

Lest

there

A

TRUE RMS display

push

buttons

1kV 100V

corresponding to

1000.V

Overranse of the display

100.0V 10.00V is signified by

normal

of 1999 except

are rltumlnated operating

decimal

the

it would

any

be

or

at the

10V

full-range

display.

displays

10070

on the

onlv when

in the tvlean

point position

otherwise

be

marked as to

confusion

range

regarding

becomes effective

is obtained

left of the

lV

row

100mV

of:-

1.000V a 1 being

100.0mV 10.00mV illuminated

overrange

1 kV range which

the instrument

is

Square mode to enable

be established;

to

toff

its function,

the

screenr.

are

these

markings,

when

when the MEAN

are marked:-

10mV

at the

permits

is L000

left

a maximum

max.

Overload.

(apart

out

selected.

is

Above

from

100% overrange

decimal

the

point)

1999 the

of

a less sensitive

until

display blanks

range

-13

-

REMote

PROGramme

DC COUPLED

BAND

LIMIT

button

This With the

remotely

be

logic. normally played.

When

is

responds to the

a low-frequency

Button

the

of the

this

a.

c.

instrument

Depressing Iow-pass

filter

is

is effective

button

programmed

Section

See

showing

push

coupled

Depressed:

responds to

signal thus:-

input

this

filter to

-3

dB at noise bandwidth frequency

may have

only

depressed,

3.2.

whether

no_t depressed,

button

via a d. c.

a. c.

button

of

is

component

response

Shorts

introduces

reject

10

15.

high

kHz

llllz. Note:

7

been

when

Range and

the

using

of

+ve

range-indication

The

volts

blocking

or

of

-3dB

out the

the

both

frequencies.

giving

fitted

an equivalent

by

Option

millivolts

capacitor.

the

at

blocking

a

(P01) is fitted.

Function

True

d. c.

TTL Compatible

the

input

0.8 Hz.

and a. c. components

single-pote

An

alternative

request.

may

lights

are being

input to the

The instrument

See

(

only,

Section

-6

dB/Octave)

signal

capacitor

Normally,

rectangular

filter

function

dis-

instrument

with

2.4.2.

so that

the

LF MODE

MEAN

mV

SQUARE

NULL

Under the is

Button

normal

lowest

40 Hz, with

Depressed:

conditions,

measurement

a settling

for s5rmmetrical

15 seconds.

*Note:

filter

With

frequencies,

the

responds

instead

appear

to

either

V2

details

For

MEAN

to the

of the

the display,

on

or

SQUARE

True

mV2

FR

a screwdriver-operated

is

This

instrument

the

zero

with

To together range

and

display

BAND the

lowest

LIMIT to

reduced

possible

adjust

and connect

due

to

input-signal

mV NULL,

note the

to internally-generated

readout.

with frequency time

Extends

waveforms*

asymmetric

of

Section

see

button

Mean

RMS value.

the

indicated

as

FR

adjusted

be

applied

strap

them

offset

exclude

reading

the

Then

readout

figure.

push

this

symmetrical

for

msec.

300

of

lowest

the

1Hz, with

to

waveforms

Specification.

1.4,

depressed

Square

of the

enable

To

numerical

by the

preset

minimum

for

to the

most

all three

earth.

true

to

in the

thermal

high-frequency

adjust

mV NULL to

will

It

button

not depressed,

measurement

settling

a

alternative

and

instrument

the

waveform

input

decimal

the

indication

range

control

output

sensitive

input

is,

indication

enable

to

indication

range.

terminals

Select the

window

last

noise.

noise,

and

obtain

possible

be

not

waveforms*

frequency

time of

point

in fact

lights.

10 mV

the

of

Select

note

the

to

'L4'

mV NULL

(continued)

}.USE

2.4

OPERATION

Assuming

that

you

strongly recommended

1)

Check that mains supply major

voltage ranges

See Section

2)

Connect

the

reduce the readout to

quite

window becomes 20 - 30 when D01

The supply to

protected

is type rating

are

that,

the

is

the mains transformer

by a 20mm x

fuse;

160mA

for I l5V operation.

going

to

before switching

instrument

which it

to

no fine

zero,

rating

for

for 230V operation

normal

use the Model

is

correctly

is to be connected. Within each of the

tapping

2.2.I.

supply

lead

.....

if

an indication of 2

and a correctly

fitted.)

is

glass

5mm

1030 for

you

on,

adjusted instrument.

primary cartridge,

windings

anti-surge

and

first

the

should:-

adjusted for the

adjustments are required.

in doubt

see Section2.2.2.

to 3 in the last

(This

250mA

time,

it is

particular

two

3)

Switch

ON the

supply

and, while allowing a minute or

circuits to stabilize, read Section 2.2.3 and Section 2.3 to familiarize

2.4.L

yourself of the

Usine the GUARD TerminaL

you

If

are not familiar with

with the maximum safe input voltages, and the functions

various

push

buttons.

the use of GUARD

minimize the unwanted effects of common-mode

prove

may

laboratory bench, where

the In instances

strapped to the

For a

helpful.

start it should

where

the connecting terminal

Lo

be understood that there

use of the GUARD terminal

the

leads are short, the GUARD terminal

as shown.

The disadvantage of arrangement in

connecting

Unbai

testbench

on

source

SHORT

LEADS

If a field from the of a neighbouring through the

single

Fig

4

unwanted induced into the measuring circuit,

so for the internal

terminal techniques, to

voltages,

many

are

following comments

the

measurements

is not necessary,

is usually

simple

the

Fig.4 is

that

leads form a loop.

stray alternating magentic

mains

transformer

instrument

behave as a

winding,

will be

turn

a.

loop it will

secondary

voltages

c.

on

the

passes

and

-15

-

source

Unbal

testbench,

on

ray

wit h sl magnetic fietd

Unbat source

testbench

on

'ftoating'above earth

Balanced

{Earthed

Fi9.7

a.c-

Fi9.5

potentral

Fi9. 6

source

floating)

or

"-{

SHORT TEADS

RESISTANCE ( LOW

ACROSS WHICH

VOLTAGES

COMMON

COULD

HIGH

OR

PRESENT

BE

VALUE

MODE

Fig.5 the and duce

When

unbalanced

Ieads)

above

Fig.6, may terminal applies

)

is very or the case advantage instance, the

Hi

The

Lo

sources

connection

uo

be connected

terminal.

or

is a better

twisted

adjacent twists

cancellation

making

be connected

deliberately

connecting

same

floating.

pair

measurements

source,

where

earth

then the

the

potential,

of the

whether the

(earth

low

of floating

gained

because

leads

comments

on

testbench.

the

should,

to

whether

arrangement,

reduces

of any

source

GUARD

to

source.

circuit

a high

of

is

the

of the

(still

resistance

sources.

small

in

same

wires

induced

using

is

shown

as

terminal

Lo

the

This

value

resistance

is [ow.

apply

most

point

centre

where

area

loop

pro-

voltages.

an

on

short

rfloatingr

in

(N)

R

impedance)

as in

The

in this

of

balanced

with

GUARD

The

instances,

as the

is earthed

tap

Lo

GUARD

The

some

is cable

distance

(Duradio Type) with frequencies choose r.f. types

a type

are,

a screened

terminal

away

low capacitance

with

general,

in

for high-performance

MICROPHONE

Mfr.

Suhner

Suhner Transradio Transradio

C.

B.I.

Fig.8

source. screen, cable

of the made

braid

If,

surrounding

to the

Type G03939 CB04730 MC MC

9442Y

shows the

In the

and the

(guard).

however,

Lo

02-A 02-D

example

bonding

the

earth

side of the

greatest

is of

from the

measuring

an insulated

microphone

twin

per

more expensive

semi-permanent

CABLE

pP/tt

20

o/D"

.L97 59 .228 35 40 36

recommended

remote

.187

.150

.244

illustrated,

point

would

source is balanced,

screen

source

(or

probably

chassis)

and

benefit

instrument.

outer

jacket

cable

foot.

and

measuring

Suhner Suhner B.I. C. B.I. B.I. C. C.

method

one

not to the

of connecting

side

when

the

A screened

shouldbe

suitable,

is

Suitable types

less flexible,

lines.

R. F.

Mfr.

G05730 G05770

T3121

C.

C. C.

T\249(DR68) T3078

of the

form the

then

source

best

rfloatingr

is

or

GUARD connection

the

earth

screen'

source

to

used.

is

it

but

listed

are

but theyhave

CABLE

Type

remote

a

to

bonded

is

place

to

above

Fig.

measured

be

twisted-pair

At low

important

below;

merit

pF/ft

16.2.292 L6.2

18. 0 .228 0

16.

16. 0 .265

unbalanced

earthed

an

to

connect

the

should

9.

to

the

O/D"

.292

.265

the

potential

be

-16 -

i

t

(

V..'{

I

\.

u"{

Finally,

particular

a exceeding

Gd

having

decided upon the

measurement,

maximum

the

-'1O

..a'

,,-a'f

'c.V'

,

-

check that

input

most suitable method

voltage

INSULATED

OUARO

SOURCE OF ELECTRICAL POTENTIAT-

Fig.8

Fig

proposed

the

ratings of the

OUIER SHEATH

SHIELD CONTACT WITH

_ESPECIALLY

9

method does instrument.

PREVENT

TO

ANY

OTHER

I

EARTH

of connection

not involve

for making

Signal Hi to

D. C. Coupled: A.

C.

Signal Lo to

Guard to

Signal Lo:

1000 1500 V

Coupled:

Guard:

1500 V

200

Earth: 500 volts

volts

pk, pk,

volts

peak.

d.c. to

20 peak. peak.

Hz to

100

kHz.

-17

-

2.4.2 Special Notes: AC

When understanding of of

the

AC series with

time constant of equivalent to

This are applied they mode.

If high-accuracy below externally

leakage of

high

could

quoted) noise

should not be

using the instrument

certain

instrument but fundamental

coupling in the Model 1030 is by means

the input

0.22

-0.

l1o at 30

time constant also has a finite

to the input of the instrument

may

take up to

30

Hz,

with a value of

the

d.

voltages

c.

cause erroneous readings,

should

occurs at

it will

then

external

the

be

considerably

a much lower voltage

ruled

basic

resistance

seconds,

Hz.

1.5 seconds

AC

COUPLED

be necessary

capacitor

onset of Partial Discharge

if

out

the

Coupling

in its a.c. coupled

theoretical

any

to

of 1 Mohm.

giving

to

settle

measurements have

greater

should be carefully checked

and

higher

d.

c. exceeds

problems

a.

c.

a frequency

settling time,

when it

out

to switch to

inception voltage

the

than

than corona

about

mode, the user

coupled

of a single 0.22 yF

This means

response of

is switched

regardless of integration

DC COUPLED,

0.221tF.

than

phenomena

applied d. c.

discharge, and the

800 volts.

which are

circuit.

that

and

if d.c.

got

to

The

for

should have

not shortcomings

capacitor

there is

-3

dB at

voltages

bias

AC

to

be made

for

within the

Partial Discharge

COUPLED,

at frequencies

and

working voltage

suitability.

the capacitor

possibility

in

an input

0.8llz,

filter

a. c. couple

to

capacitor

(if

an

and

At

-1

8-

SE

C TION 3

OPTIONA L REMOTE

3. 1

OPTIONS

(BO

I ) and

(BO

I a) : I

-2-4-B

3.1.1 Description

(BO

Options

Reading Range

I ) and

and

RIBBON' Connector

earth

and

also

from

(BO

I

enable full Binary

a)

Function to be obtained

(J5)

mounted on the

from

rear

the signal input terminals.

panel.

Whilst it is recommended that the output digital earth, earth and

enabling

the input terminals

digital common.

The

50-way connector

complete

levels are TTL

external control of the

compatible,

may be floated

also

provides

(J5)

with a fan-out of 4.

as high

Analogue

3.I.2 Connections

The

table

pins

on connector J5.

below

operation on the

0.4 V) is

ractivef

(and

on the

following

BCD output numbers are

1V Range. Bar notation indicates that a low

renablesr

or

the described state.

page)

OPERATION

BCD OUTPUT

Coded

Decimal

outputs

describing

a 50-way Amphenol'MICRO-

outputs are isolated

The

as

various

to

common

volts

500

control

Digital

be referred

relative to true

lines and flags,

convertor.

from

lists the various functions of the

given

magnitudes that assume

level

(less

true

to true

All

than

e.g.

instrument is operating in either

conditions:

Pin No.

J5

I

2

Function 2 x 10-4

4 x 10-4 3 8x10-4 4 1x10-4 5

2 x 10-3 6 4 x 10-3 7 8 I

10

8x10-3

1x10-3 2 x 10-2 4 x 70'2

11 8 x 10-2 72 l3 L4 15 8 16

17

18

1 x 10-2 2 x 4 x 10-1

x 10-1 .x

i

O\IERI-OAD

i r 1{)0

frT

l(r-1

10-1

means

that

32 is

10 mV or

low

of its

100 mV

(less

than

permitted

two

0.4 V) when the

Description

(Option

BCD Output

rrrrrt(rrilrl rr rr

niltt(tfrtrt

ilil?t

ilntl

ll ll ??

?t t? ?t

|lilil

t!

?r ?!

l?

ilIttt

It .r

fi tr l?

Indicates

BCD

Output

No.

lr

Ir

rr

tl tr

signal

Number

tt

t?

rl

tt

ll

greater

(

D01 only)

rr ?r rr

than l9I9(9)

millivolt

Pin No. Function

J5

-1

9-

Description

19

*

20* 2l 22

* *

23*

24*

25* 26 Not

used Do 27 Not used 28 MEFxI@RE 29 DeETiPtE'D 30 BTND-LIfim 31 32 33 34 35

mTfOTE'

niv

Not

used

RANGE A

RANGE B 36 RANGEC 37 38 39 40

4L

RANGE D

Not used Digital COMMON FOID Input

ffi'

42 FE'NrfrEIFrr

43 SIG. 44 DEffi 4s 46 47 48 49 50

INTEGRATE Output

ffi output"

+ )r

t

*

I

030 Range Coding

*

Used for

programming

when Option ( P01)

not

connect

Do not

r0r r0'

'0f '0' '0r

Do not Decimal Point Coding

)

(Range). (See

)

tables)

)

(Option

)

Do not

tOt

Input

connect

indicates

MEAN indicates DC indicates BAND

indicates

LF

indicates mV:

connect

following

BOI and BO2 only)

connect

state reference

control

rr ?t ?t

??

'?

" rt

line

flag

line

flag

*

Used for when

for

Options

programming

Option ( P01) is fitted.

BO I a and BO2a

Ranges and F\rnctions

is fitted.

SQUARE:

COUPLED:

'1,

r1r

=

LIMIT: f 1, = WIDEBAND

'1r

MODE:

tf

indicates Volts

=

NORMAL

',

Ranges

=

RMS

AC

COUPLED

and

Functions

Range

0mV

00mV V OV

00v

000v

Range

lOmV l00mV IV l0v l00v 1000v

1030

34

(A)

I

0

I

0

I

0

Range Coding for Options

34

I I

0

I

(A)

35

0

I 1

0

I l

(B)

35

0

I

I 0 0

I

BO I and BO2

Pin 36

I

0

I I

0

I t

Pin 36

(C)

-

(C)

BCD Output

0 0 0

I

I I

aa

(D)

JI

I I I I

I

0

-20-

3. 1.3

Suppose the following

this

Pins 3 8x10-4

5 &6

g

8r

15 &

Now suppose

low or'O'

Examples of BCD Codins

gives

12

16

Pin 32 Pin

rieht

The

a reading of:-

+2

x10-3 +2xI0-2 + +8x10-1

that Option

(less

state

low, indicates

35 and

reading is

36 low, indicate

ie. 10.00(0)

therefore

than

pins

of J5 are in a

3-5-6,9-r2-15-16

=

0008

.

+4x10-3=.006

x 10-2

1

+1

x10-1

TOTAL

BOla is

0.4V):

that the instrument

9.368 millivolts.

=.03 =.9 =

.9368

fitted and

that the

decimal

rlr

(

Option D01 only)

pins

that

is measuring

point

state

32,35

is one

(greater

mV.

and 36

place

than2.4

are in

to the

V):-

a

Alternatively,

If

Alternatively

37, may be

and

Pfns

do not affect

and

when the present

though

even

they

mV may be interpreted as

28 had been held

when

30 and 31 are merely

29,

interpretation

input

signal

when

will be

regarded as

or

is

too

1? is in a

accurate

.9368

=.

at

e.

28 is

.

high

for numbers only

x 10

1000

009368 volts

tOf

,

s68

hetd squared,

9368

(

1000)2

00009368 V2

of

for a

'1f

the output

then

S#

at

x ( 10)2 volts2

flags indicating

BCD number.

the

particular

state but thev

'0f

rdivided

(FR

weighting

the

giving:-

slightly

by 1000r

would have

=

range.

Range)

Fult

partieular

a

must

in exeess

of

17, OVERLOAD,

BCD numbers

giving:-

been:-

pins

not be taken

34, 35,

32,

measurement

may

of 1 9I9

(9).

36

mode,

indicates

be

vaiid

as

3. L.4 Control 40

Pins

remotely

system.

be held

can

when it

45 are control

to

The

control

a

to

Lines

lines, enabling

is

used in conjunction

lines float to a

state by

'0'

or low

input

the user

with other equipment

'1'or

connecting

high

them

to control

as

state if open

to

39,

instrument

the

part

circuit,

digital

a test

of

and

COMMON.

-2t-

3.1.4.1 Print Command: state at the end

ferred to the steady

BCD output information.

The

storage registers

falling voltage

of

measurement

each

step

Pin 45,

m

cycle,

when

and is available at the

available at

45

reading device to take note of the BCD output or,

be used

it is available at any time Pin 45 is in

to inhibit scanning of the BCD information.

the'l'

except when new

for approximately 5mS during

stafe

information is being transferred.

occurs.

A

logic low on

occurring

forced to

3.1.4.2

on

a low state in

Sisnal Intesrate:

digital convertor

represents the earliest

edge to the input

operate

to accurate via

its

terminals

a signal

information.

delayed command

42 FE'Ni?trINEiEfI

45,

thus making it easy

this condition.

Pin 43

exhibits a high

is acquiring its information. It is

time at which new

without

disturbing

scanner, for example, at the highest

The falling edge can

facility,

at

the

prevents

stop

to

reading in hand. It can

the

also be used to command

same time.

falls from a f lf

new reading

the

pins

of

can thus command

alternatively,

which

Since

time the update of data

the reading is

has been trans-

in the form of

J5

an external

?1r

the

state can

the ffi

external

printers

etc. Pin 45

state flag while the analogue to

made available because its falling

signal information

may

be

thus be used

possible

speed

for

the instrument,

See Section

3.4. 1.5.

rot

to

stored,

edge from

is

applied

futly

3.I,4.3 Hold if

is desired to the

it

When

40 followed by an external

3.L.4.4 Read instrument

low.

held

progress

in

Readinq: Pin 40,

is taken low the

storing and displaying it until

read

command

Command: A falling edge on to take The instrument inhibits commands that

is

complete.

PRINT COMMAND

COMMANO

INTEGRATION CYCLE

SIGNAL

INTEGRATE

mtD,

stop the instrument from

instrument will

is applied

reading

one

the integration cycle.

to

immediately

Fig.10

shows

may

externally

be

held in a low

reaching its normal

reading in

complete

40

is taken high

if, and only

relationship of COTIilIEN-D

the

any

or released, or

41, CIOIIINIAFID,

if,

applied before

are

40

state

free-run mode.

progress,

until

instructs the

already

HOLD

is

conversion

and

PRINT

*

Note:

COMMAND

Minimum

COMMAND

pulse

Fig l0

width

2 microseconds.

is

-22-

3.I.4.5 an external

delayed

Delaved

Command:

command is applied,

period

by a

of

time equal

This delay is automaticalLy

is selected by

Provided

at the

A

same instant

particularly

front

the

useful

with a signal scanner,

scanner,

the

INIEGRATION

as for

CYCLE

panel push

44

is

held low,

that new

example

the

eommanding

If

adjusted

signal

of

this is where

same

command

a reading

44,

DELAY is

then

the command will

to the settling

depending

button,

this

or by optional

means

information

being used for stepping

be

to

NFI AY TIMF >T

held at logic

be automatically

time of the integration

on whether

that

the instrument

is applied

the Model

NORMAL

remote

to the

1030 is

programming.

front

used in

taken, Fig.11.

,0r

while

filter.

or LF MODE

be

can

commanded

panel

conjunction

switching

or

terminals.

SIGNAL

PRINT CON4MAND

For

falling

COMMAND

INTEGRATION

SIGNAL

INTEGRATE

maximum read rate

edge of

CYCLE

INTEGRATE

43, SIGNAL

'_-

in

a closed-loop

TIME

DELAY

Fig.1l

system,

INTEGRATE,

the

Fig.12.

command

could be the

PRINT

COMMAND

Fig.l2

-23-

3.I.4.6 refemed minimum

3.2

(BOla)

and

PRINT INHIBIT,

42, forced to a'third'

bus-bars

or

42, electrically

outputs

single-pole

printing.

for

3.3

r0r

digital

to

fan-out capability

OPTIONS

Options

respectively.

instrument

The

in

of several

switch could

OPTION

State Reference:

COMMON

on

is 4 TTL loads.

(BO2)

all active

state

a system and then,

disconnected

instruments

(

P01): REMOTE

(BO2a)

and

(BO2a)

and

basic difference

The

BCD and control

which

is a

can therefore

be used to

very high impedance

at wiII.

All

digital outputs

39.

Maximum

: THREE

are 3-state

by the

are connected

PROGRAMMING

STATE

(or (Tri-state'*)

is that upon

lines are

permanently

be

application

Another example

select the

and eommand fan-in

LOGIC

application

inhibited.

OFF state.

parallel

in

outputs

is

OUTPUTS

versions

The

connected

single logic

of a

would to a

from a

lines are

TTL loads,

two

(BO

of

Options

of a logic

output lines

to

be printer: particular instrument

low to

logic highways

where the

I

are

f

0r

to

a simple

)

BCD

3. 1

3.

remotely

Description

Option

(P01)

programmed

programme lines

terminals

programme system; the

earth

to

3.3.2

push-button basic apply

switches. eould

by means

common

signal

and digital

Method

optional

The

switches,

instrument,

+15

volt

levels

These

present, relays.

be

Similarly, digital points

COMMON

Function

and

enables

all Ranges

via the 50-way

are eleetrically

of opto-electronic

(digital

COMMON) input terminals COMMON.

of Operation

Programme

making

signal

appropriate

to

are either

connection

switching

field-effect

See

digitat

to

switching

appropriate

lights on the

and

Amphenol

isolated

are then

Board

mounts on

accomplished

is

parts

Drawing

accomplished

is

parts

of the circuitry

display.

Functions

frorn

isolators.

referred

be

able to

to certain

of the

transistors

439105,

No.

of the

connector

both earth

recommended

It is

earth in

to

float

of the

top

of the contact by the

analogue

or,

Sheets

by the

operate

to

Model

provided.

signal input

and

the

volts

1500

front-panel

push

buttons,

circuitry

where

push

high

2 and

1,

buttons

the

All

that

be

the

1030 to

measurement

peak

relative

of

bank

pins.

In the

which

operate

to

signal

voltages

3.

which

decimal

apply

Operation

digital

instead

COMMON

into

No.40911-?.

tines

(output

COMMON.

of

lines

Programme

the

Remote

contacts

tights

This

*

Trade

REM

the

from

programming

of the

up the

mark:

PROG

rest of the

the Board

push

button

seleeted

National

push

button

mounted

achieved

is

switches),

F\rnction

Semiconductor

disconnects

switches,

on top

of the

by connecting

via connector

lights

both

lines being

the

switches.

decimal

and

Inc'

+15

ths

routed See Drawing

appropriate

the

J5, to

point

volt and

digital

directly

-24-

and by-passes

signal switching

for

Fig.13 shows excites a coupled

pulls

and

should

per

one

PROGRAMME

LIN

light-emitting

a

to

its

be noted

line.

K

photo-transistor.

the

emitter

that since

OIGITAL

COMMON

push

button switches.

using opto-electronic

a simplified

diode.

up

+15

to

all

BUFFER

4sN7tt7

version The

Light from

volts

lines

are

OUT TO DISPLAY DECIMAL

POINT

The isolators.

of the

diode

to supply

is encapsulated

the diode

buffered

BOARD

ETC

Fig.l3

digital signal

circuit

the

there

in which

turns on

signal

PH

OTO

switching

is

a maximum

ENCAPSULATED

-

ELEC T

ISOLATOR

is

with,

+l

5v

N IC

RO

the

also

responsible

the digital

and

optically

photo-transistor

voltage.

fan-in

signal

It

of

TO

SIGNAL SWITCH

3.3.3

Connections

The following

programming:

3.3.3.1 prograrnme

to point

and achieve

table shows

Pin No

the fuII listing

Range

the six

the onlv

20

48

47 46

49

3.3,3.2 F\rnetion, X F\rnctions selected

Function

indicates

tables

give

Connections:

voltage

the necessary

permitted

10mV

100mV

the

The

table

of all

ranges.

signal

states

connections on

connections

below shows

Pins 46

switching,

for each

1V

o01

110 o11 101 111

Connections:

that the

for the same measurement.

In

pins

this

table

may be

is

-

47 - 48 while

range.

10v

1 1

o

1 1

rOt

the

in

either state,

connector

given

the

required

-

49

20

100

in Section

calls up mV.

v

1 1 1

o

1

states

select

depending

J5 used for

3.1.2,

states

position

1kv

1 1 1 1

o

required

the

upon other

necessary

the decimal

The

2I 22

z3

19

No

DC CPLD

o x x

X

BANDLIMIT

x o

X X

LF MODE

X

o

X

MEAN

SQUARE

x x x o

Datron Instruments 1030 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual