Dana 4600-OSM User Manual

PUBLICATION NO. 980479

DIGITAL

r

'"

r

00

'-

MULTIMETER

.J '-___

EPT.

""""

-~-

1

u

"

DANA

LABORATORIES,

2401

CAMPUS

IRVINE,

Copyright @ 1977 by This book or parts thereof may

CALIFORNIA

Dana

laboratories. Inc. Printed in the United States

INC.

DRIVE

92715

PUBLICATION DATE:

not

be reproduced

in

any

form

MAY

without

TELEPHONE TELETYPE TELEX

1977

of

written

(714)

910-595-1136

678-341

America.

permission

833-1234

All

rights

of

the publishers.

reserved.

DIGITALY REMASTERED

OUT OF PRINT- MANUAL SCAN

S

By

ArtekMedia

P.O. BOX 175

Welch, MN 55089-0175

Phone: 651-269-4265

www.artekmedia.com

“High resolution scans of obsolete technical manuals”

If you are looking for a quality scanned technical manual in PDF format please visit our WEB site at www.artekmedia.com or drop us an email at manuals@artekmedia.com

If you don’t see the manual you need on the list drop us a line anyway we may still be able to obtain the manual you need or direct you to other sources. If you have an existing manual you would like scanned please write for details. This can often be done very reasonably in consideration for adding your manual to our library.

Typically the scans in our manuals are done as follows;

1) Typed text pages are typically scanned in black and white at 300 dpi.

2) Photo pages are typically scanned in gray scale mode at 600 dpi

3) Schematic diagram pages are typically scanned in black and white at 600 dpi unless the original manual had colored high lighting (as is the case for some 70’s vintage Tektronix manuals).

4) Most manuals are text searchable

5) All manuals are fully bookmarked

All data is guaranteed for life (yours or mine … whichever is shorter). If for ANY REASON your file becomes corrupted, deleted or lost, ArtekMedia will replace the file for the price of shipping, or free via FTP download.

Thanks

Dave & Lynn Henderson ArtekMedia

WARRANTY

ARTEKMEDIA => 2012

...

Within one year your instrument, or

workmanship. All parts and labor charges will be paid by Dana Laboratories. Just call Dana in California, for assistance. for your prepaid shipment. Your instrument will be returned freight prepaid.

of

purchase, Dana Laboratories will repair

at

our option,

if

in any way

Product Service

We

will advise the proper shipping address

it

is

defective

at

(714)833·1234 collect

or

in

material

replace

to

you

OPRIETARY NOTICE

This document and the technical data herein disclosed, are proprietary to

Dana Laboratories, Inc., and shall

of

permission solicit quotations from a competitive source or used for manufacture by anyone other than Dana Laboratories, Inc. The information herein has been developed at private expense, and may only be used for

operation and maintenance reference purposes or for purposes

engineering evaluation and incorporation into technical specifications

and other documents which specify procurement

Dana Laboratories, Inc.

Dana Laboratories, Inc., be used,

not,

without express written

in

whole or in part to

of

products from

of

FOR

ARTEKMEDIA => 2012

Before undertaking any maintenance procedure, whether it be described herein or an exploratory procedure aimed at determining whether there has been a malfunction, read the applicable section WARNING and

The equipment described in this manual contains voltages hazardous inflicting personal injury. The cautionary and warning notes are included in this manual to alert operator and maintenance personnel to the electrical hazards and thus prevent personal injury and damage to equipment.

If this instrument through ensure that the instrument common connector nected to the ground (earth) connection mains.

YOUR

a specific troubleshooting or maintenance procedure

of

this manual and note carefully the

CAUTION notices contained therein.

to

human life a,.u safety and which

is

to be powered from the

an

autotransformer (such

as

a Variac

SAFETY

is

capable

AC

or

equivalent)

of

the power

Mains

is

of

con-

Before operating the unit ensure that the protective con-

is

ductor (green wire) protective conductor the protective feature the power cord by using a two conductor extension cord a three-prong/two-prong adapter.

Maintenance and calibration procedures contained in this manual sometimes call for operation applied and protective covers removed. Read the procedures carefully and heed Warnings to ensure your personal safety.

Before operating this instrument.

1.

Ensure that the instrument operate on the voltage available source.

2.

Ensure that the proper fuse instrument for the power source instrument

3. Ensure that proximity to this instrument are properly grounded or connected to the protective third-wire earth

ground.

See Installation section.

connected to the ground (earth)

of

the power outlet.

of

the third protective conductor in

of

to

avoid "live" circuit points

is

to be operated.

all

other devices connected to or in

Do

the unit with power

is

configured to

at

the power

is

in

place in the

on

not

defeat

or

which the

GENERAL DESCRIPTION

1.1

GENERAL.

1.1.1 The Dana Model 4600 curate, four digit instrument featuring auto range, auto polarity, 80 mon mode noise rejection, and 10,000 megohm input resistance on the

Available options include Battery Pack, Data Output, and Read, Hold Probe.

1.1.2 The basic instrument has full multimeter capability measuring full scale inputs from 10 five

DC voltage ranges, from 10 mOhms to 20 Megohms on ohms ranges, 10 namps to 2 amps on ranges, and 10 namps to 2 amps on

1.1.3 High reliability

and solid-state circuitry, including the display. Protection from possible introduction through both mechanical and electrical means. The use separate input terminals, while routing inputs only when the proper function nals reaching the wrong circuitry. The current functions are protected on function rms

AC

handle inputs 20 kHz, decreasing to 200 volts at 100 kHz

dB

normal mode noise rejection, 140

DC

functions .2 and 2 volt ranges.

voltage ranges, from 10

is

selected, reduces the chance

all

ranges by a 2.5 amp fuse; the

is

designed to handle inputs

on

all

ranges; the

of

1000 volts

AC

is

a compact, highly

IN

J.J,V

to 1000 volts on

five

insured by the

of

fault voltage

of

volts function

DC

or 1000 volts rms

dB

com-

to 1000 volts on

five

AC

current

DC

current ranges.

use

of

LSI

MaS

is

provided

of

DC

volts

1000 volts

is

on

DC

designed to

AC

all

ranges.

ac-

AC

six

of

sig-

or

to

Option 84 RF Probe, measures RF voltages to

200

MHz.

Option 88

Option 89

1.2 MECHANICAL DESCRIPTION.

1.2.1 The basic ment and comes equipped with a bail handle to simplify carrying. The bail handle rotates 3600 and may be used a "kickstand" for easy measuring and control access.

1.2.2 the power supply are mounted on two printed circuit boards and housed the interior nance

1.3 ELECTRICAL DESCRIPTION.

1.3.1 The model 4600 utilizes the dual-slope integration method minimizes the number ability and lower cost while having stability and noise rejection.

All

is

made by removing three screws on the back panel.

of

Deluxe test leads, include assorted tips.

Standard test leads, with replaceable tips.

DMM

is

designed

components

of

the instrument for calibration and mainte-

analog-to-digital conversion. This technique

of

the basic instrument including

in

a high-impact plastic case. Access to

of

components for increased reli-

as

a bench top instru-

inher~nt

advantages

as

of

1.1.4 Also available (designated 4600-51). The option provides the function, range, polarity, and numeric readout data in both serially and in parallel.

1.1.5 Accessories available for 4600 include:

Option Option 70

Option 80

Option

Option 82

Option

61

81

83

is

the Option

Carrying case. Battery pack for operation - up to

four hours continuous where no

Shielded input cable, for use in high

noise environments.

Hold Probe, provides pushbutton control of

5 measurement to 5

50 measurements to 50

AC

power

Measure/Hold functions. KV

HV

Probe, extends

KV

HV

Probe, extends

51

Isolated Output

use

is

available.

KV.

BCD

in areas

DC

voltage

DC

voltage

form

1.3.2 The circuitry consists section, digital section, and an analog-to-digital converter.

1.3.3 The analog-to-digital (A/D) converter changes a dc signal fed into it into a representative digital signal. The method used to perform this task

integration.

1.3.4 The digital section measures the converter to produce a numeric value on the instrument display that represents the value digital section also provides range control and decimal placement.

1.3.5 The signal conditioning section scales, filters, and, when required, converts the input signal to a full scale volts for the A/D converter.

1.4 SPECIFICATIONS.

1.4.1 Specifications are provided in table 1.1.

of

a signal conditioning

is

called dual-slope

output

of

the input signal. The

of

the

AID

±2

1-1

980479

ARTEKMEDIA => 2012

Table

1.1

- Specifications

..

DC

VOLTAGE

Full Range Display:

Resolution: .005%

Accuracy:

Temperature Coefficient:

Input Resistance:

;\formal Mode Noise Rejection:

I

!

I

Common

. Mode Noise

Rejection: Settling Time to

0.01%

of

Full

Scale Step Input:

±.19999, ±1.9999, ±19.999,

+199.99,

volt range, .01%

10

6 Months, 230C ± 50C (after zeroing)

.2V Range

2V,

1000V Range

+1000.0

of

range except 1000

of

J..LV

on .2 volt range

±(0.02% + 2 digits)

20V, 200V Ranges HO.Ol % + 1 digit)

±(0.01 % + 1 digit)

of

reading

of

reading

of

reading

range

o to 50°C

2V, 20V, 200V, 1000V Ranges

±(O.OO

1 %

of

reading

.1

digit)/oC

+

.2V Range

±(0.002% +

.5

.2V Range

1010nminimum

2V

Range

101 On

20V, 200V, 1000V

10

Mn

80

dB multiples 50

dB increasing at 12 dB/octave

140

dB

120

dB

(With

10 Kohm Source)

700 milliseconds

2.5 seconds maximum on

1 KV range for 1 KV step

input

of

reading

digit)/oC

minimum

Ranges

± .25%

at 50 and

at 59 Hz, general slope

DC at 50 and

of

10

60

Hz

±

60

Hz

and at

0.1

%.

OHMS

Full Range Display:

Resolution: Accuracy:

Temperature Coefficient:

Settling Time Rated Accuracy: on

Maximum Input Voltage:

Current through Unknown and Voltage across Unknown:

Open Circuit Voltage: 7 volts maximum

to

.19999

19.999

1999.9 10 6 Months, .2

2K,

2000

20,000

o to 50°C

.2

2 Ranges

2000

20,000

Less than 700 msec

2S0V all

.2 2Kn 20Kn 200Kn 2000

20,000

Kn,

1.9999

Kn,

199.99

Kn,

19.999

milliohms on .2

230C ± 5°C

Kn

Range ±(O.OS% + 2 digits)

20K, 200 ±(O.OS% + 1 digit)

±(

+ 1 digit)

±(0.2% + 1 digit)

Kn

±(O.OOS% + 1 digit)/oC

Kn,

±(0.002S%

.1

+

±(O.OOS%

.1

+

±(O.OOS%

+

.1

all

ranges Range Kn

Kn

Range

0.1 % of

Kn

of

Range

20

Kn,

digit)/oC

Kn

Range

digit)/oC

Kn

digit)/oC

ranges DC

or peak

Kn

of

Kn

of

reading

Range

reading

of

Range

of

Current

1 1 100pA 2 volts

10

IpA

0.1

reading

200

of

rnA rnA

Kn, Kn, Mn

Kn

Range

reading

Kn

reading

AC

J..lA

pA

range

Voltage

0.2 volts 2 volts

2 volts

1-2

Table

ARTEKMEDIA => 2012

1.1

. Specifications continued

980479

ACVOLTS

Full Range Display:

Resolution:

Accuracy:

(From

1%

to

range of

range)

of

100%

.19999, 1.9999, 19.999,

199.99, 10 microvolts on the .2 volt

range 6 Months, .2 30

2000.0V rms

230C ± 100C

Volt Range

Hz

to 50

±(0.1 %

of

Hz

reading

+ 70 digits)

Hz

to 500

50

±(0.1 %

Hz

of

reading

+ 30 digits)

500

Hz

to 50 kHz

±(0.08%

of

reading

+ 16 digits)

50 kHz to

±(.7%

+

2,200 30

Hz to 50 ±(0.25%

100 kHz

of

reading

40

digits)

Volt Ranges

Hz

of

reading

+ 20 digits).

Hz

to 20 kHz

50

of

±(0.1 %

reading

+ 9 digits)

20 kHz to 50 kHz

of

±(0.1 %

reading

+ 10 digits)

50 kHz to

±(.7%

100 kHz

of

reading

+ 14 digits)

20

Volt Range

30

Hz to 50

±(.25%

+

50

Hz

±(.1 %

30

Hz

of

reading

digits)

to 20 kHz

of

reading

+ 12 digits)

20 kHz to 50 kHz

±(.I % of

+

16

50 kHz to 100 kHz

±(.7%

reading

digits)

of

reading

+ 16 digits)

2000 Volt Range

(10V to 500V)

30

Hz

to 50

Hz

±(0.45%

of

reading

+ 10 digits)

50 Hz to 20 kHz

±(0.15%

of

reading

+ 5 digits)

AC VOLTS continued

Accuracy: (con't)

2000 Volt Range

(500V to 1000V)

30

Hz

to 50

±(0.5%

of

+ 10 digits)

50 Hz to 20 kHz

±(0.2%

of

+ 5 digits)

Temperature Coefficient:

30

Hz

to

±CO.Ol

10

%

of

+ .4 digits)/oC

10 kHz to 100 kHz

±(0.05% or reading

+.1

digit)/oC

Common Mode Noise Rejection: in either lead

Input Impedance:

Zero Offset:

Settling Time (To 100%

of

range):

Less than 80 60 Hz with I Kohm imbalance

1 Megohm with 100 pF

shunt capacitance with

.221J.F

in series on aRranges

Range

.2V

2V 5 digits max

20V 200V 2000V 5 digits max

of

range to F

1 %

of

to 1 %

Step settles to 0.1 % value within 1.5 seconds

range

CURRENT AC

Full Range Display:

Shunt Values: .2

Input Protection: Accuracy:

(From

1%

of

range

to

100%

of

range)

.19999 rnA, 1.9999 rnA,

19.999 rnA, 199.99 rnA,

1999.9

2mA 20mA 200 2000

2.5 Amp Fast Blow Fuse 6 Months, 50 .2,2,

rnA

Hz

- 10 kHz

20, 200

±(0.2%

23

of

+ 20 digits)

2000

rnA

Range

±(0.3%

of

+ 20 digits)

Temperature Coefficient: + .6 digits)/oC

±(0.015%

of

Hz

reading

kHz

reading

dB

at

50

40

digits max

30

digits max

5 digits max

.S.

or F

of

IKn

loon Ion In

O.ln

0

('

±

SoC

rnA

Range

reading

Hz

.S.

final

and

1-3

980479

ARTEKMEDIA => 2012

Table

1.1

- Specifications continued

•

-

CURRENT

Full Range Display:

Shunt

Values: .2

Protection:

Input Accuracy:

Temperature Coefficient:

DC

GENERAL

±.19999 rnA, ±1.9999 rnA, Ranging:

±19.999

+1999.9

2mA 20

200 rnA

2000 rnA

2.5 Amp Fast Blow Fuse 6 Months, .2, 2,

2000

o to

±(0.01 %

+ .2 digits)/oC

rnA, ±199.99 rnA, rnA

rnA

230C ±

20, 200 ±(0.12% + 4 digits)

±(0.3% +

20 digits)

500C

rnA

of

Range

of

reading

IKn lOOn IOn In

o.ln

SoC

rnA

Ranges

reading

Digitizing Technique: Dual Slope

Signal Integration Time:

Read Rate:

Maximum Common Mode Voltage:

Power Requirements:

Storage

Temperature: Operating

Temperature: Warmup: 30 minutes

Weight (Approx.):

Dimensions:

Automatic or Manual

100 msec ± .25% 400 msec per reading

2-1

/2 reading per second

+.25%

KV

DC

1 to Earth Ground

100, 120, 220, 240 ±IO% from nominal. 50 to 400 Hz, maximum

-200 C to

-200 C to 650 C w/battery opt.

0-

to 6 month accuracy Std:

With Battery Option:

73mm x (2.87 x 7.87 x 9.84 inches)

or peak

50°C

Kg

2.3

3.2

(Sibs.)

Kg

(7Ibs.)

200mm x 250mm

10

750 C

AC

volts

watts

input

1-4

SECTION 2

ARTEKMEDIA => 2012

INSTALLATION & OPERATION.

2.1

GENERAL.

2.1.1 This section covers the incoming inspection, instal· lation, storage and operation

of

the Model 4600

DMM.

2.2 UNPACKING & INSPECTION.

2.2.1 The Model 4600

is

enclosed between two molded, plastic·foam forms and packaged in a double·walled card· board carton for shipment. The plastic forms hold the instrument securely in the carton and absorb any reason· able external shock normally encountered in transit.

2.2.2 Prior to unpacking, examine the exterior shipping carton for any the

DMM

from the carton and inspect the exterior

instrument for any

signs

of

damage. Carefully remove

damage.

If

damage

of

is

found,

of

the

notify the carrier immediately.

2.3

BENCH

OPERATION.

2.3.1 The instrument comes equipped with a bail handle" that doubles elevating the front

as

a carrying handle and

of

the instrument.

as

a "kickstand" for

2.4 RACK MOUNTING.

2.4.1 The rack mounting kit (Option 60) allows the user to mount the instrument Offset Left or Offset Right in a standard 19-inch rack and requires 3-1/2 inches mounting space. left and right

"The

kit consists

case

supports, two brackets, and 8 securing

of

a rack mount panel,

of

vertical

nuts.

2.4.2 The option

is

shown in figure

2.1

and assembled

as

described below:

a.

Index rack mount panel for desired position

(Offset Left or Offset Right).

b. Place the left and right case supports over the two

sets

of

studs on the case supports face out. Mount

the

case

supports to the panel with four

of

the

securing nuts. and washers.

c.

Set the instrument bail to the rear

ment. Place the instrument between the

of

the instru·

case supports with the bail handle passing through the slots in the

d.

Place the slotted part case

case

supports.

support studs

of

each bracket over the

so

that the curved portion

of each bracket goes around the bail. Secure the brackets with the remaining four nuts and washers.

RIGHT

CASE

HAND

CASE

SUPPORT

MOUNTING

SUPPORT

BRACKET

SHOWN

Figure 2.1 .

Rack

Mount

Installation

r-

PANEL

2-1

980479

ARTEKMEDIA => 2012

Table

2.1

-Front

Panel

Identification

13

CD

0*

8)*

CD

(0

1-

- - -

I

L

POWER Switch, push on, push off. POWER Fuse Holder, 2.5 Amp, protects

measurement circuitry on current measurements. VOLTAGE-OHMS measurement input jacks. CURRENT measurement DC

VOLTS Function Select Switch, push on.

KOHMS Function Select Switch, push on.

input

jacks.

--

-I

I·

.-J

UP

ON

AUTO

AUTO selects range most compatible with

®

signal. Push on, push off.

DN.

Causes instrument

on.

UP.

@ @

Causes instrument

DC

OFFSET. Allows user

wanted input signal bias.

to

downrange. Momentary

to

uprange. Momentary on.

to

POWER

--.

......

ON

OFF

compensate

out

input

un-

AC

(j)

®

2.5

POWER REQUIREMENTS.

2.5.1 standard 6-foot long detachable power cord connected power input

2.5.2 The power fuse holder input jack and uses a .25 ampere fast blow fuse.

2.5.3 The instrument is designed for operation voltage The instrument of the main printed circuit board.

2.5.4 Access by removal removal

of

the line voltage printed circuit board in connector 114 on

VOLTS Function Select Switch, push on.

MA

Function Select Switch, push on, push off.

Used with

Power

jack

100, 120, 220, 240 volts ± 10%, 50

of

3 screws at the rear

of

the case (see table 2.2).

DC

volts and

is

supplied

1201.

is

set

to

the desired voltage by the position

to

the line voltage adjustment

AC

to

the instrument through a

is

located

of

the instrument and the

volts select switches.

the power

to

PCB

is

at

a line

400

gained

to

Hz.

DISPLA Y consists

@

"0 -9" types.

2.5.5 removing the instrument from its case and positioning a printed circuit jumper appears in the aperture in the right hand side Figure 2.2 illustrates the location figure 2.3 illustrates the aperture with the jumper in place for

2.6

2.6.1 The instrument can be stored ranging from

and a

Removal Avoid contact with internal electrical connections while unit

120 volt operation.

STORAGE REQUIREMENTS.

of

is

Selection

-200C

of

four full decade readouts

"±1"

readout, all .43 inch yellow LED

*See CAUTION, paragraph 2.9.5.2

WARNING

covers exposes potentially lethal voltages.

connected

of

to

AC

power source.

the line voltage is accomplished by

so

that

the desired line voltage

of

the

PCB

at

temperatures

to

+700Ct

at

75%

relative humidity

of

the case.

jumper and

2-2

t

to

+650C with battery option

CD

ARTEKMEDIA => 2012

POWER

power cable.

Table

2.2 -

Rear

c::::J

Receptacle 1201. This receptacle receives

Panel

Identification

8)

980479

3

READ/HOLD Control Connector. Receives Read/ Hold

Switch option.

CD

FUSE Holder, .25 Amp fast blow, is in series with

of

high side

CD

BCD

OUTPUT Connector 1202. Available only on

instruments equipped with the option

put

option.

Figure 2.2 - Line Selector PCB Jumper Location

without adversely effecting operation or accuracy. The instrument must be brought 50°C) before power is applied.

power line & power transformer.

51

BCD

out-

TOP

VIEW

REAR

OF

INSTRUMENT

up

to

operating range

(OOC

to

eD

DISASSEMBLY Screws. Removal permits removal

Figure 2.3 - Line Voltage Indicator Aperture

If

2.7.2

proceed

a. Wrap instrument in plastic or heavy paper.

the original packing materials are

as

follows:

SIDE

of

VIEW

case.

APERTURE

REAR

OF

INSTRUMENT

PCB

JUMPER

of

these screws

not

available,

2.7

RESHIPMENT

2.7.1 The shipping carton with its molded plastic foam form and plastic dust cover vide the required support necessary for safe shipment. Whenever possible, these should be used for reshipment.

PACKAGING

is

specifically designed

REQUIREMENTS.

to

pro-

b.

Place packing material around all sides ment

and pack in cardboard box.

c.

Place instrument and inner container in a sturdy cardboard or wooden box. Mark priate precautionary labels.

box

of

instru-

with appro-

2-3

980479

ARTEKMEDIA => 2012

INPUT jOUTPUT jCONTROLS.

2.8

2.8.1 In tables controls and their function. Also described are input and output connectors.

2.9

OPERA

2.9.1 Operation consists tion, selecting autorange or manually selecting the desired range, applying the input signal and reading the results on the instrument readout.

2.9.2 Autorange.

nON.

2.1

and 2.2 are described the operating

of

selecting the desired func-

2.9.4.2 Overrange the read rate.

2.9.5 Signal Input.

2.9.5.1 Signal input front panel. These jacks accept standard probe banana

plugs and are spaced to accept dual banana plugs. Several probe sets for the Section 1).

2.9.5.2 The left hand pair DC

and

AC

current measurements; the jacks on the right are

for voltage and resistance measurements.

is

indicated by the display flashing at

is

through four banana jacks on the

4600 are available from the factory (see

of

input jacks are reserved for

2.9.2.1 In autorange the instrument automatically selects the range most appropriate for the signal being measured.

2.9.2.2

ranges

downranging occurs at

2.9.3 Manual Range.

2.9.3.1 When autorange in manual range. Higher or lower ranges are selected by pressing the selected at the read rate within the range limits selected function pressed.

2.9.3.2 The available ranges for each function are given in table 2.3.

As

the input signal changes, the instrument changes

as

required. Upranging occurs at 100%

5%

of

range.

is

not selected, the instrument

UP

or

DN

range buttons. A new range

as

long

as

the

UP

or

Table 2.3 - Available Ranges

DCI

DCV

.2

2 2 2

20

200 200 200 200

(rnA)

.2

20 20 20

ACV

.2

ACI

(rnA)

.2

DN

2

of

range and

of

the

buttons are

Kn

.2

2

20

200

is

CAUTION

Do not connect test leads between the jacks. Application

these jacks can damage the instrument.

As

2.9.5.3 side measured and the

ground. be

tied function. The shield then should be tied to the input side.

2.9.5.4 Maximum inputs are shown in table 2.4.

Current Volts Volts

Kohms Common

Mode

a general rule for voltage measurements, the

is

connected

If

shielding

to

the

LO

Table 2.4 -Maximum Inputs

Max

DC

AC

DC,

1000V linearily to

250 volts max.

1000 volts input to earth ground, data mon tied to earth ground

of

voltage or current between

to

the highest impedance point

LO

side

is

connected to the point nearest

is

used on the input cables, it should

input side unless it

current input 2 Amps (current jacks)

rms

AC

1000 volts

DC

to 20

kHz

200V at 100 kHz

DC

or peak

rnA

is

used in the Ohms

rms decreasing

AC

max. from

output

and

LO

Von

to

current

com-

Hi be

1000 2000 1000 2000

-

2.9.4 Overrange.

2.9.4.1 Overrange occurs when the signal being monitored is

greater than the instrument can measure with the range

selected.

2-4

- -

2000

- 20,000

2.9.6 Function Select.

2.9.6.1 The select buttons for volts are interlocked; when one any other button in the set

2.9.6.2 The current button AC

volt or

unselected when current measurement

DC

volt button for current measurement and

AC

volts, kilohms, and

of

these buttons

is

released.

is

selected in addition to the

is

pushed,

is

no longer desired.

DC

is

2.10

ARTEKMEDIA => 2012

HOLD/READ PROBE

2.1

0.1

This option consists

switch that connects to

2.10.2

With

the option plug inserted in 1203

position, the instrument takes readings only

switch

is

held down.

2.10.3. With the option plug inserted in position, the instrument

switch

is

pressed.

2.11 BCD OUTPUT

(Option

n03

on the rear panel.

81).

of

a probe with a built-in

n03

goes

into the hold mode when the

51).

as

in

the read

long

in

the hold

as

the

2.11.1 This option provides function, range, polarity, and value

in

BCD

the display operated device. quiring serial or parallel output. The option detail

in

Section 3.

form for printer or other digitally

It

is

designed to interface with units

is

covered

re-

in

980479

to four hours the instrument power switch

2.12.2 level, the condition

of

continuous

is

connected to the power

is

set to the OFF position.

When

the battery charge drops below operating

is

use.

indicated

Recharging occurs when

by

a LED lamp on the

line

and the

instrument front panel. To fully recharge the batteries quires about

Option 70

Option

16

hours.

NOTE

is

not available for units equipped with the

51

BCD Output.

re-

NOTE

Option

51

is

not available for units equipped with the

Option 70 battery pack.

2.12

BATIERVPACK(Option70).

2.1.2.1 With the battery pack option the instrument

becomes completely portable, taking measurements for up

CAUTION

On

units equipped for battery pack operation (Option

70)

the batteries connected to the ment

is

turned off. The batteries charge

mately

16

are

hours; it

charging when the instrument

AC

power source and the instru·

in

approxi·

is

recommended that the unit

is

be unplugged during extended periods of non-use to avoid

pOSSible

damage to the batteries.

2-5

THIS

ARTEKMEDIA => 2012

PAGE

LEFT

BLANK

SCANS

By

ArtekMedia

SECTION 3

ARTEKMEDIA => 2012

3.1

GENERAL.

Model

3.1.1 The vides

the function, range, polarity, and numeric readout data in single data of characteristics

3.2

3.2.1 printed circuit board that

BCD

connector on the instrument rear panel. The output

is

completely isolated from the measurement portion

the 4600, thereby preserving the common mode noise

MECHANICAL

All

components for the option

4600 Option

form, both serially and in parallel, from a

of

the instrument.

DESCRIPTION.

is

51

Isolated Output pro·

are

on a

mounted above the instrument

single

BCD OUTPUT

main

PC

board by four spacers;

located between the boards, prevents any digital generated on the option board from affecting the measure· ment circuitry on the

3.2.2 nector that extends out the back

a slot provided for this purpose. This connector option output connector and

3.3

3.3.1 The option, shown in simplified block diagram

form in figure 3.1, consists

section, and six optical couplers.

One end

ELECTRICAL DESCRIPTION.

Main

board.

of

the option board forms an edge con·

is

of

a floating section, a grounded

an

aluminum shield,

of

the instrument through

designated J202.

J202

noise

is

the

Kn

RANGE

,

NUMERIC

DATA

TRANSFER

00

CLOCK

-100

AC

T

I

P7

I

:

I I

1

I

:

1

FUNCTION

ENCODE

CONTROL

LOGIC

h>

:>

MUX

f

r--

.-.-

......-

~

I

'-

OCll

I

OCI

I

OCI

I

OCI

I

10CIs

SERIAL

SERIALS

1 I

2 I

4 I

"-

I

SERIES

DATA

,

1

I I

I

SHIFT

REGISTER

2

I

PARALLEL

OUTPUT

I

3

4

i

TIO

GEN

I

I I

I

PARALLEL

1

OUTPUT

I

INHIBIT

I

SERIAL STROBE

_I

HOLD~(~I----------------------------------~

FLOATING

SECTION

Figure

3.1·BCD

:

oc,.I"'~------------------------«

Hc5"i:D

I I

Output

GROUNDED

SECTION

3-]

980479

ARTEKMEDIA => 2012

TRANSFER

00

"

L

COUNTER

U1

i

F/F

U5,U3

DATA

TRANS

DECODE

U5

GATE

U2,

U3

f--

~

PART

MUX

U6,U7

...

-

OF

MUX

SERIAL

DATA

CLOCK

DATA

CLOCK

(1

kHz)

TRANSFER

(1

STROBE

Figure

~END

OF

.-J

00

_________

kHz)

I I

1

MS

I I

r

3.2 - Control Logic

DIGITIZING

t+--5

=il

--'I

.....

If-----

II

I I I I I I I I

MSEC--+j

n

8

MS

..

______

-----

_

...

~oIL

20

IlS

3-2

PARALLEL

DATA

VALID

Figure

3.3-

UNITS

TENS

HUNDREDS

Timing

THOUSANDS

TEN

THOUSANDS

FUNCTION-----..J

RANGE-------..J

Diagram

980479

ARTEKMEDIA => 2012

3.3.2 The floating section encodes and multiplexes the binary data from the measurement portion and transmits the data through optical couplers 1 through

5.

The sixth coupler The floating section consists of: Function Encode, the Multiplexer (MUX), and the

3.3.2.1 The multiplexer consists

line data selector/multiplexers, receives inputs from the function encode circuitry and trol signals from the control logic, both located on the option board, and range and numeric data from the display board. The

multiplexer has a 4-bit byte output which drives the

four optical data couplers; the output byte corresponds to

of

one control logic.

3.3.2.2 The consists counter generates the operational logic for the multiplexer and the strobe provides timing information for the grounded side. The circuitry operates by following a predetermined series steps shown in figure 3.3. The operation starts when the

TRANSFER line as OD, Display board, signal data transfer signal enables the gate, allowing the 1 kHz clock board) to advance counter is

3.3.2.3 The clock advances the counter through seven steps. At the The strobing action ment circuitry

UI,

and the readout value being strobed to the display routed through the multiplexer and optical couplers. The sixth step the multiplexer selects the encoded Function byte. The seventh step the multiplexer selects the Range byte. is the generation reset when TRANSFER

the three possible input bytes, selected by the

Control Logic, shown simplified in figure 3.2,

of

an R/S flip-flop (US, U3), gate circuit (U2, U3),

(UI),

signal

which drives the

soon

as

pulses

a strobe

sets the flip-flop output true (Data Transfer). The

signal

(also from the counter/multiplexer on Display

decoded by

operation

the

five

readout data bytes to the

On

the eighth step, the flip-flop

inhibited, preventing the advancement

is

used for

and decode logic (US). The control logic

goes

true, permitting counter Ul to count

are

received from the gate circuit.

signal

from the counter/multiplexer on the

is

received the negative going

US.

same

time seven strobe pulses are generated.

of

the control logic

of

the counter/multiplexer

so

that during the first

of

additional strobe signals. The counter

HOLD

Control Logic.

U6

five

Ul.

The output

goes

false.

of

and

data optical couplers and

is

of

the instrument

(see paragraph 3.4.7).

two dual 4-line to

U7.

The multiplexer

edge

of

the counter

synchronized with the

of

the measure-

five

steps

of

MUX

are selected

is

reset and the gate

of

the counter

1-

con-

of

When

of

the

counter

is

being

or

is

3.3.3 The grounded portion data from the optical isolators to provide the output data in

series and parallel form for a recorder or other digitally

operated device at connector

of

consists hold circuitry.

3.3.3.1 The shift register consists serial shift registers, each four data optical couplers (OCI 1 through 4). The outputs of

the optical couplers are also used being binarily weighted (1-24-8). The strobe pulse received through optical coupler (OCI 5) and applied to the command inputs

3.3.3.2 One output pair generate VALID the other output pair microsecond pulse (SERIAL DATA STROBE and its reciprocal

inverted and used to strobe the shift register.

3.3.3.3 The hold circuit permits the user to electrically stop the instrument from taking new readings through the BCD transistors (one on the grounded portion and the other on the floating portion) and an optically coupled isolator

(OCI6).

3.4 OPERATION.

3.4.1 Provided with the Option nectOr

preventing misalignment

and 44 connector pins (Dana PIN 600809). Pin identification pend on the type

3.4.2 referenced to pin at pin 1 for printer reference.

put

are defined

Logic

a shift register, a dual timeout generator and

of

the dual one-shot.

an

eight millisecond pulse (PARALLEL

and its reciprocal, INHIBIT PARALLEL DATA);

is

SERIAL DATA STROBE). Serial Data Strobe

output connector. The circuit consists

(Dana

600810), a key (Dana PIN 600811) for of

is

provided in table 3.1. The pins used, however,

of

operation used (serial or parallel).

All

output lines are from TTL logic and are

2.

A reference

as:

Hi:

+2.4 volts minimum

Lo: +0.8 volts maximum (8

of

the option converts the

110. The grounded portion

of

four 8-bit parallel out

of

which

is

driven by one

as

the serial outputs,

of

the one-shot

programmed to generate a 20

the connector, mounting screws,

+5

Output

is

programmed to

51

is

the mating con-

volt output

levels

of

rna

current sink)

of

DATA

of

the 2

is

provided

the data out-

the

de-

is

3.3.2.4 The function encoding circuitry converts the polarity, use

AC,

T,

and

Kn

by the multiplexer.

inputs into a

BCD

coded output for

+"

3.4.3

3.4.3.1 The function codes are shown

Function Codes.

in

table 3.2.

3-3

980479

ARTEKMEDIA => 2012

Table 3.1 - Pin Location

1202

+5V

Ref

Earth Ground

Output

Serial Thousands (4) Function Range (4) Hundreds (4)

Tens (4)

Units (4) 14 R Serial

Output

Thousands (1)

10 Thousands Function (1) 18 V Function Range (1) 19 W Range

Tens (1)

Hundreds (1) Units (1)

I

Function

-DC +DC ACV 1 1 0 0 3

-DCI +DCI ACI

Kn

3.4.4 Range Codes.

3.4.4.1 The range codes are shown in table

(4)

(2)

(1)

Table 3.2 -

Fl

0

1

0 0

1

1 1 1 0 1

A

1

B

2

3

C

D

4

E Serial Data Strobe

5

F

6

7 H Hold

J Serial

8

K

9

10 L

11

M

12 N

P Tens (8)

13

15

S

16

T

17

U

20 X

Y Tens (2)

21 22 Z

Function

F2

0 0

0

J202

Serial Data Strobe Parallel

Inhibit

Thousands (8)

+ Polarity Hundreds (8)

Units Serial

. Thousands

10 Thousands

Hundreds

Units (2)

Data

Parallel

Output

(8)

Output

(2)

Codes

F4

0 0 0 0 0 1

1

1 0 5

0 1

F8

0

3.3.

Valid

Data

(8)

(2)

(OL)

Dec

4

7 9

Table

3.3

Range

20,000 1 2,000 0 0 200 1 20 2 .2

3.4.5 Serial

3.4.5.1 The data lines; strobe data form. vided in table 3.4.

Pin identification for lines used in serial

+5V

Ref

Earth Ground 2

Output

Serial

Output

Serial

Rl

0

1

0 0

Output.

output

is

available in logic true and inverted true

Table

3.4

- Serial

(4

lines) 8

(2

lines)

-Range Codes

R2

0

1 0 3 1

0 0

is

available in serial form

Out

1202

1 A

R4 Dec

1 5 1 4

0 2

0 0

Pin Location

B

3 C 4 D

5 6 7

9 10 11 12 13 14 15 16 17 18 V 19 20 21 22

Serial Data Strobe

E

Serial Data Strobe F H Hold

Serial

J

Output

K

L

M

N

P R

Serial

S

T

U

W

X

Output

Y Z

out

(8

(2

1

on

four

is

pro-

lines)

3-4

3.4.5.2 At the completion

ARTEKMEDIA => 2012

strobe

output rate. During each strobe pulse, a new data byte appears the data

Word

1 8 4 2

2 3 4

5 0 0

6

7 0

3.4.6 Parallel Output.

3.4.6.1 The data (parallel) on twenty-four lines

3.4.6.2 Data Data pin D is true the inverted true logic

3.4.7 Hold.

3.4.7.1 The hold line held at logic low, prevents a new measurement cycle from starting. Any measurement in progress when hold manded

generates seven 20

output

is

lines. The serial data is shown in table 3.5.

Table 3.5 - Serial Data

8 4 2

80

800

8K 4K 2K

F8

is

at

the

output

(8

output

is

required for a print pulse.

allowed

of

to

complete.

of

the measurement, the data

J1Second

Bit

40

400

F4 F2 R4

available in standard

of

1202

pins is available when Parallel

milliseconds). Inhibit Parallel Data is

pin D and can be used when negative

is

an external command line. When

pulses at a 1 kHz

Out

20

200

20K(OL)

R2

BCD

as

shown in table 3.6.

1

10

100

lK

10K

Fl Rl

is

at

form

com-

Table 3.6 -Parallel Out Pin Location

1202

+5VRef Earth Ground

Thousands (4)

Function (4) Range (4) Hundreds (4)

Tens (4)

Units (4)

Thousands (1)

10 Thousands (1) 17 U

Function (1)

Range

(1)

Tens (1) Hundreds (1)

Units (1)

3.4.7.2 The value display and is available (although no new parallel data The data following the last reading taken.

is

not present at the serial data

1 A

B

2

3

C

4 D Parallel Data Valid

E

5

F Inhibit Parallel Data

6

7 H Hold

J Thousands (8)

8

9 K

L

10

M

11

12

N Hundreds (8)

13

P Tens (8) 14 R 15

S

T Thousands (2)

16

18

V 19

W Range (2)

X Hundreds

20

Y Tens (2)

21

Z Units (2)

22

of

the last measurement remains in the

at

the parallel data

Units (8)

10

Thousands (2) (OL)

Function (2)

(2)

output

pulse

is

980479

output

lines

generated).

lines

3-5

THIS

ARTEKMEDIA => 2012

PAGE

LEFT

BLANK

SCANS

By

ArtekMedia

SECTION 4

ARTEKMEDIA => 2012

THEORY

OF

OPERATION

4.1 GENERAL.

of

output

the Model

as

well

as

is

pre-

level pro-

ac

4.2 This section describes the operation 4600

DMM

and includes the basic teclmique used

of

more detailed explanation

CIRCUIT DESCRIPTION.

4.3

4.4 A functional block diagram sented in figure 4.1. The diagram areas for purposes (2) Digitizing, (3) Ranging, and (4) Display. Measurement signals applied to the input terminals are routed to the appropriate signal conditioning device by the function controls. Because the isolator amplifier operates with low voltages, dc measurement signals higher than 2 volts must be

scaled down. This

The attenuator also changes the source current flow on the

ohms ranges and provides the required shunting on current ranges. The attenuator for the

4.5 The ac converter produces a dc portional the ac ranges this

to

of

ac

the ac measurement applied to its input. On

dc

the major functional portions.

of

the instrument

is

divided into four major

discussion;

is

accomplished by the attenuator.

converter contains its own voltage

ac

voltage ranges above 2 volts.

signal

(I)

Signal Conditioning,

is

applied to the isolator.

4.9 The Timing and Control circuits provide the integrator and counter with the synchronization required to

of

perform the analog to digital conversion

a

signal. The instrument performs continuous measurement cycles. The measurement cycle

4.10 Note that the digitize cycle major periods. The first, which the signal integrate period. During this time the Timing and Control circuits apply the measurement signal to the input of

the integrator. The integrator, during this period, charges a capacitor to a level determined by the value measurement signal. During the next period the Timing

Control circuits apply a reference voltage opposite in

and polarity to the measurement signal to this capacitor order

to

discharge it. The capacitor

as

rate and integrator produces a null detect signal which the Timing and measurement counter. Thus, the value measurement counter of

the measurement signal. During the signal integrate period the Timing and of

the measurement signal and store this information

flip-flop.

the charge on the capacitor reaches zero the

Control circuits to stop the count in

is

directly proportional to the value

Control circuits detect the polarity

is

the measurement

illustrated in figure 4.3.

is

divided

100 milliseconds long,

is

discharged at a fixed

of

in

is

used by

the count

to four

of

the

in

the'

in

the

in

is

a

4.6 The ohms amplifier produces a dc portional ranges. Like the produced by the ohms amplifier input.

4.7 The isolator functions tion to

the put impedance on the low voltage dc ranges ment. The for conversion to a digital count.

4.8 The integrator which charges a capacitor for a fixed time period to a level which (see figure 4.2). The capacitor

'rate by switching a reference signal

onto the input charges it crosses the zero volt level and 'begins to charge the opposite direction. A null detector in the integrator circuit senses this zero-crossing and produces a

detect"

and

Thus, the count value in the measurement counter is a

direct digital representation

voltage applied to the instrument.

to

the direct current at its input on the ohms

ac

converter, the dc output voltage

is

as

a buffer to prevent applica-

of

"normal-mode" noise or "common-mode" voltages

integrator circuit.

output

is

dependent upon the level

signal. The null detect signal

Control circuits

of

It

also serves

the isolator

is

the integrator.

to

is

applied to the integrator

a dual-slope conversion device

of

is

then discharged at a fixed

stop the measurement counter.

of

the measurement signal

output

applied to the isolator

to

provide a high

the measuremen t signal

of

opposite polarity

As

the capacitor

is

used by the Timing

level pro-

of

the instru-

in-

dis-

"null-

in

4.11 The measurement counter circuit chip which includes the measurement counter, a latch to store the count, a decoder, and multiplexer. The measurement count stored in the latch

be

must LED coder. The multiplexer, transfers one digit to the 4-to-7 line decoder. The 7-line decoder parallel. The as Thus, the sequence but the display rate the LEDs appear to

4.12 Range control from the front panel or automatically by the internal range control logic. There of operator desires to pushes it switch through control logic configures the voltage attenuator and current shunt to scale down measurement input signals. In

converted

display. This

is

applied to

its code appears on the

LED

the instrument labeled

in

the Auto pushbutton (a latching type switch) . .If

is

desired to use manual range control the Auto range

is

unlatched and the operator then has control

use

of

to

a 7-line code for application to the

is

accomplished by the 4-to-7 line

in

of

information at a time from the latch

all

of

MUX

switching line turns on each LED digit

output

display devices

be

continuously illuminated.

is

accomplished either manually

are

three switches on the front panel

UP,

use

the auto ranging feature he simply

the

UP

and

DOWN

is

a special integrated

is

in

BCD

code and

the measurement counter,

code from the

the

LED

display digits in

of

the 7-line decoder.

are

actually flashing in

is

of

a frequency that makes

DOWN,

and AUTO. If the

pushbuttons. The range

de-

4-1

SIGNAL CONDITIONING

ARTEKMEDIA => 2012

AC

CONVERTER

~".-t

t

•

MEASUREMENT

INPUT

TERMINALS

~

RANGE

REFERENCE

r------.,

INTEGRATOR

REFERENCE

GENERATOR

FUNCTION

CONTROLS

CONTROL

NULL

DETECT

....

VOLTAGE

\

--......

\

CONTROL

SIGNALS

~VOLTAGE~

ATTEN

l......a...

r-"""""

~

AND

CURRENT

SHUNT

1=======I=======lISOLATOR

~

f t

LATCH

4-LlNE

AND

MULTI

OHMS

AMP

LI

FIE

I

~

BCD

~

I

________________

I

R

r.o-

DECODER

~

1.",0..

MEASUREMENT

_---

TIMING

AND

CONTROL

START/

..

STOP

..--~

TIMING

SIGNALS

COUNTER,

DECODER

PLEXER

~----~--

L-~P~O~L=A~R~IT~Y~

MUX

4-TO-7

LINE

__

I--

SWITCHING

~-r~r-~---+---+---r/

~

LED

DISPLAY

I'

~

7·LlNE

I I

::ODE

4-2

____

I

RANGE RANGE RANGE

CONTROLS

L.........

,---.-

CO

NT

RO

LOGIC

L

Figure

DIC:T~IN~

:

~ISPLAY

__

_

RANGING

CODE

4.1 -Functiona I Block

DECIMAL

DECODER

CIRCUIT

AC~

OHMS~

DC

DECIMAL

1-

_______________

PATH

LEGEND

Diagram

POINT

...tL._...,.L-_...,.L-

__

-----L.

__

---'

ISOLATOR

ARTEKMEDIA => 2012

REFERENCE

GENERATOR

Figure 4.2 -Dual Slope Integration

I

SIGNAL

I

10,000

100

INTEGRATE

COUNTS

MSEC

REFERENCE INTEGRATE

TO

10,000

100

COUNTS

MSEC

I

a.

J

1

I

a·2~--------------~

I

REFSW--

RESET

addition, it controls the attenuator in the circuit, The isolator gain control logic and depending on the selected operating range ment,

The range code from the range control logic

applied to the decimal decoder which provides the signals

to the

LED

______________

__________________

Figure 4.3 -Display Cycle Timing Using Dual Slope Integration Technique

is

switched from

displays

to

properly locate the decimal point,

~--------------~L--------------.-----~-I~------------------

r-

- - - - - - "'T - - - - - - -

:~

______________

AC

Converter

also controlled by the range

Xl

to

XIO gain,

of

the instru-

REFERENCE

INTEGRATE

TO

20,000

100

:~

____________

is

RESET

10,000

COUNTS

MS~C

100

COUNTS MSEC

I

..

---------------i

__________

__

~I

4.13 Function Controls.

A simplified block diagram

illustrated

in

figure 4.4. The function controls consist

front panel pushbuttons labeled Milliamps,

Kohms, and

DC

Volts. Note that there are two sets

put terminals for applying measurement signal to the input

of

the function controls

AC

Volts,

of

in-

is

of

4-3

q

ARTEKMEDIA => 2012

HI

LO

DCV ACV

Kn

--

0----,

~

rnA

ACV

S1

~

S2

---

-

AC

CONVERTER

--

AC/DC

rnA

>-

Kn

S3

1\

S4

of

input terminals

Figure

of

the instrument. One set urement terminals

of

ac and dc milliamps. The other set

is

used for measuring dc volts, ac volts and

DCV

4.4

-Function Controls

Kohms. The four function control switches route the put measurement signal through one

ac

making

measurements

measurement signal

to

terminals

the input

of

either voltage or current. The

is

routed from either set

of

the

AC

of

Converter. When making dc voltage or current measurements the measurement signal is

applied to the input

of

the isolator and,

OHMSAMP

""-

ISOLATOR

is

for meas-

of

input

in-

three paths when

of

input

in

like fashion,

the ohms measurement signal

is

routed to the input

of

the

ohms amplifier. Although the block diagram shows that the

is

measurement signal

applied to the input

three circuits, measuremen t signals

of

one

are

actually routed

of

these

through the voltage attenuator and current shunt circuits

for pre scaling purposes. This

discussed in more detail

in

is

the following paragraph.

4.14 Voltage Attenuator and Current Shunt. This cir-

cuit

is

shown in simplified form in figure 4.5. The attenuator and shunt circuit performs the following functions; tenuation

of

input measurement voltages on the 20, 200,

1)

at-

and 1000 volt dc ranges, 2) scales down the ohms current

is

source when the instrument

as

3) acts

a shunt when on the

on the Kohms ranges,

ac

or dc current ranges, and

4) the attenuator and shunt circuit contains two series resistance strings with pick-off

pOints selected by range

lays. In figure 4.5 the left-hand resistance string

re-

is

the

voltage range attenuator and ohms current source divider.

as

The right-hand resistance string serves

the ac and dc current shunt, and also has pick-off points selected by range relays. In the upper left-hand corner that the dc measurement signal

of

figure 4.5 note

is

switched around the attenuator on the low ranges and goes directly to the isolator.

On the 20, 200, and 1000 volt ranges the

measurement signal

is

switched onto the top

of

dc

the range

DC--.()--

RANGE

20.,200,1000

SELECTED

ATTENUATION

S3-8

.2

8.

2.

,---------

'------__.--(100

RELAY

POINTS

RANGE

":"10

•

-'-100

• (10J.LA

.!-1000

•

1MA

Kn

TO

ATTENUATOR

nA

(1

J.LA

Kn

(100

J.LA

KnSOURCE

0--+1

V

ISO

(10

Kn

SOURCE)

KnSOURCE)

Kn

SOURCE)

(OHMS

REFERENCE)

Mnl

DCV

RANGE

DVDR

(ATTN)

AC/DC

.2

2

20

200

CURRENT

rnA

2A

Kn

RANGE

DIV

(SOURCE

SHUNT

m

RELAY

SELECTED

SHUNT

POINTS

AC/DC

rnA

CURRENT

SHUNT

44

M

Figure 4.5 - Voltage Attenuator and Current Shunt

Kn

ARTEKMEDIA => 2012

IN

Kn

PUT_

........

/V\..-

+15V

>----1

OUTPUT

PROTECTION

CLAMP

DRIVE

Kn

Figure 4.6 - Ohms Amplifier

attenuator resistance string. On these ranges the isolator connected to the appropriate point on the range attenuator

resistance string for pre scaling.

When

4.15

the instrument

current, the measurement

is

used to measure

signal

is

ac

applied to the top

or dc

of

the

right-hand resistance string, the ac/dc current shunt. The

range

relays then select the appropriate pick-off point

the shunt resistance string and apply that signal to the

put

of

the isolator.

in

in-

is

4.16 S3,

When

the instrument

in

the lower left corner

is

used to measure resistance,

of

figure 4.5,

is

switched to the Kohm position and the range relays pickoff the appropriate point to apply, amplifier. Configuration thus accomplished by accommodation control setting

as

a current source, to the input

of

the attenuator and shunt

an~

the

s~ate-of-the-range

of

the function

relays.

of

the ohms

is

4.17 Ohms Amplifier. A simplified functional block

of

diagram The ohms amplifier may converter in that it produces proportional to the input current. The input current directly proportional to the

the ohms amplifier is illustrated in figure 4.6.

be

viewed

value

as

a current-to-voltage

an

output voltage directly

of

the resistance being

is

measured. The output voltage produced by the ohms amplifier current

is

always a negative voltage because the source

is

derived from the positive one volt ohms reference

supply.

4.18

simplified form consists and to controlled by the range relays 2V voltage

AC

Converter. The

in

figure 4.7.

of

an

input attenuator network, a rectifier amplifier,

an

output filter. The input attenuator network

scale

down the input measurement voltage and

ranges neither

is

applied directly to the rectifier amplifier. On

of

these relays

AC

Converter

As

shown on the diagram it

K1

and

K2.

is

energized and the input

is

shown

in

serves

is

On the .2 and

INPUT

ATTENUATOR

INPUT---1r--4~~AAr--4~------

K1

~--~--~~--~--~~--~--

__

~--+-----~

RECTIFIER

AMPLIFIER

OUTPUT

FI L TER

__

~~----~Ar-----e--JV~---e--JVVV--~---DCOUT

(-1.999V

F/S)

Figure 4.7

-AC

Converter (Averaging)

4-5

i

ARTEKMEDIA => 2012

the 20V and 200V ranges noted at this point that the isolator has a gain of

10, depending on the range the instrument

the combination

of instrument on the various the

lOOOV

range. The rectifier amplifier consists

Kl

is

energized. I t should

of

1 or a gain

is

set. Thus,

be

KI and isolator gain configure the

ac

ranges. K2 is energized on

of

an operational amplifier and two rectifier diodes which convert the input measurement signal then smoothed by the

output

to

a dc voltage which

filter network.

4.19 Isolator. The isolator, shown in figure 4.8, con-

sists

of

an

input clamp, an isolator amplifier, a bootstrap

are

pre-

ap-

amplifier, and a gain switching network. The various scaled and processed input measurement voltages plied to the input

of

the isolator which

is

clamped to pre-

vent application isolator amplifier. The isolator amplifier amplifier with a gain

of

more than

of

±5V

1 or a gain

to the input

is

an operational

of

10, depending upon

of

the

the control signals applied to the gain switches by the range control logic positive or negative voltage levels at its input on one ranges;

is

Because control logic, the

of

the instrument. The isolator accepts either

(1) zero

of

to

.1999 volts

or

(2) zero to 1.999 volts.

the gain switching, controlled by the range

output

of

the isolator

is

always zero to

of

two

1.999 volts dc. Note that the negative and positive supply is

voltage for the isolator amplifier

strap amplifier. These voltage sources

supplied by the boot-

are

labeled + boot-

strap voltage (+ BSV) and - bootstrap voltage (-BSV).

of

The purpose

isolator amplifier with a supply voltage which

+15V

+

BSV

the bootstrap amplifier is to provide the

is

always

ISOIN--~~--~----------------~

+5V

INPUT

CLAMP

-5V

....

-------1

>---

X1

GAIN

SWITCH

X10

GAIN

SW

ITC

-

BSV

....

---+---ISO

H

OUT

+7V

s..J

~<O

/

+3V

.",,?vy+2V

OV_~_\tA'?V

_2V/_

-7V

/<0

s..J

3V

4-6

-15V

Figure 4.8 -Isolator

SLOPE

ARTEKMEDIA => 2012

CAPACITOR

FROM

ISOLATOR

FROM

-

REF

FROM

+

REF

AMP

SIGNAL SWITCH

-

REF

SWITCH

+

REF

SWITCH

1--e~Mrl"'-~

RESET

SW

1--

.....

------1

RESET

SW

Figure 4.9 -Integrator

centered about the input measurement signal to the isolator amplifier. The the input signal and the -

+

BSV

voltage

BSV

is

always 5 volts higher than

is

always 5 volts lower than the input signal voltage. Thus, the isolator amplifier always supplied with source voltages centered around the input signal. This combination provides high input imped-

. ance to avoid loading the circuit under test.

4.20 Integrator. The integrator performs the analog-to-digital conversion ment signal and

is

illustrated in figure 4.9. The integrator

is

the circuit which

of

the measure-

uses the dual slope integration technique to perform the analog-to-digital conversion. Refer to figure 4.3 for the cycle timing relationships that relate to the dual slope

of

integration. During the reset portion

the measurement

cycle the two reset switches close placing the offset

of

capacitor across the output This charges the offset capacitor offset voltage that appears at the detector amplifier. At the beginning

of

grate portion

the measurement cycle the reset switches

the null detector amplifier.

toa

level equal to any

output

of

the signal inte-

the null

open and the signal switch closes, thus placing the offset capacitor in series with the measurement signal from the

at

isolator

the input positive or negative offset voltage from the signal being measured. The output

of

the integrator amplifier. Thus a

is

added to or subtracted

of

the inte-

. grator amplifier charges the slope capacitor for a fixed

of

period the capacitor

time (100 milliseconds). The charge placed on

is

dependent on the magnitude or level

of

the measurement signal from the isolator. Refer to figure 4.3, note that there are two slopes shown representing the capacitor charging slope; these represent two measurement

is

levels. Note that the time

the same for the charge for

NULL

DETECT

FEED

FWD

SWITCH

M

both measurements

charge level

is

signal integrate period

is

charging rate and level measurement

but

that the charging rate and the final

different. From this it can

is

always the same length but the

of

the capacitor varies with the

Signal.

At the end

of

the signal integrate

be

period the feed forward switch adds a small amount

OUT

seen that the

of charge to the capacitor to make up for a slight delay which is

incorporated to allow similar lines and circuits to settle

out between the reference integrate and signal integrate

of

portions

the measurement cycle. This causes the slope

capacitor charge voltage to increase slightly. At the

beginning

the reference integrate period

of

the measure-

of

ment cycle the signal switch opens and either the - refer-

ence switch or the

reference voltage to the input

in

opposite

polarity to the voltage

nal previously applied. This reference voltage

+ reference switch closes to apply a

of

the integrator amplifier of

the measurement

is

sig-

applied to the integrator amplifier and causes the slope capacitor to discharge

a fixed rate.

When

the slope capacitor reaches

at the zero level the null detector amplifier produces a null detect pulse. Note ments the rate the

same

angle. Also note that for different measurement

that

of

discharge

in figure 4.3 that for

was

the same, e.g., the slope

both

measure-

is

signals input the zero crossing occurs at a different point in

be

time. Thus, it can

seen that the time periods reference integrate portion proportional to the value

of

output

the null detector

of

the measurement cycle

of

the measurement signal. The

is

used by the Timing and

of

the

is

Control circuits to stop the measurement counter. On

figure 4.3 the

Qe

1 and

Qe 2 Signals

shown are timing signals generated by the measurement counter chip and used by the Timing and and generation

Control circuits for circuit synchronization

of

control

Signals.

4-7

+15V

ARTEKMEDIA => 2012

~6.4V

>---i

>--.4

-1V

.....

+1V

.....

-TO

-

+

REF

-

SWITCH

Figure

4.10 -

4.21

the source integrator and ment at the voltage attenuator and current shunt circuit. The reference generator reference device operated at its zero temperature coefficient current. produces approximately 6.4V. this 6.4V provides the reference input to three operational amplifiers. The calculated to cause the - reference source. The other two 1 fiers meters which are adjusted to provide reference source. These two amplifiers are operated at unity gain, output.

Reference

of

is

applied across a voltage divider network which

-1

V reference amplifier

are

connected to a voltage divider through potentio-

Generator.

the + and - reference voltage used by the

of

the + 1 V source used for ohms measure·

is

a selected high stability

it

to produce exactly

The reference generator

is

illustrated in figure 4.10. The

:z;ener

As

shown in figure 4.10,

is

configured with feedback

-IV

dc output for

V reference ampli·

+ 1 V dc from the

are

non-inverting, and produce a positive 1 V dc

is

diode

It

+1V

>-~.--

Ref~rence

Generator

4.22

is

controlled by the Timing and Control circuits (figure 4.11, block diagram). These circuits provide synchronization and control signals which control the sequence referred to the measurement cycle timing. Note that the timing forms and polarities for a positive measurement signal while the lower portion illustrates the negative input example.

The differences between the upper and lower portions

the figure are the polarity slope and polarity, the timing switch and reset switch. The following description

operation simplified block diagram (figure 4.11) and the timing chart (figure 4.12).

TO

Timing

as

the measurement cycle. Figure 4.12 illustrates

in

the upper portion

of

the timing and control circuits refers to the

Kf1

SWITCH/ATTENUATOR

and

Control

Circuit.

of

the input signal, the integrator

.

Operation

the figure illustrate timing

of

signal switch, reference

of

the 4600

of

operation

wave-

of

the

4-8

1

ARTEKMEDIA => 2012

~

V

(OVERRANGE)

+5V

+5V..!!..

11

12

11

2-

.,....

+ N D

-

3

..

U11

D

CLK

CLR

113

N.D.

U12

D

CLK

CLR

POLF/F

U12

D

CLK

F/F

Q

F/F

Q~

13

Q

ARM·RESET

B

GATE

9

--

10,":::

U1~~

P-Q

-

~6

7

~4

3

/

5

~

/'

12

INTERNAL

RESET

5

~

3 4

U13

~

6

U9

11

~

,...

~TORNGSW

6

fr,

U14

11

,

~"G'NT

MEASUREMEN

CYCLE

RESET

(INTEG)

RESET

(UPRANGE)

OIL'

(DISPLAY

OIL

10

-

REF

(INTEG)

TIMIN

SW

PCB)

SW

T

G

S

W

RESET

2

u

U9

1

,....

SIG

INT

~

-

2

U13 U14

13

ft.7-

9

U7

+

SIG

(AUTO

REF

(INTEG)

INT

RANGE

SW

~

5

'--

~

U9

4

~

r-

9

~

/"

POL

DR

F/F

US

2

'--

D

3

CLK

Q

1

U7

~

LO

= -

POL

HI

= +

6

POL

RESET

(AUTO

+

TR

RANGE)

POL

ANSFER

Figure 4.11 - Timing and Control Circuit, Simplified

Block

Diagram

4-9

-

ARTEKMEDIA => 2012

-

EXAMPLE:

RESET--t

INTEGRATOR

NULL

DETECTOR

TRANSFER

-

RESETSW'I

+1.0000V

OUT

DC

SIGNAL

INTEGRATE

10,000

100

I

Qe1-.J

I

Qe2

SiGiNT-,

I

--.J

I

RESET

....J

I

SIG

SW....J

I

REF

SW

I

SIGNAL -2.V

~REFERENCE

COUNTS

MSEC

DC

RANGE

INTEGRATE

(HIS)

100

10,000

MSEC

(HIS)

INPUT

:tREFERENCE~RESET~SIG.

COUNTS

INTEGRATE

(F/S)

10,000 100

COUNTS

MSEC

10,000

100

COUNTS

MSEC

I

L

I

L

I

,-

I

r

I

L

INT.

4-10

Figure 4.12 -Measurement Timing Cycle

EXAMPLE:

ARTEKMEDIA => 2012

-1.9999V

DC

SIG

2.V

DC

RANGE

(F/S

INPUT)

INTEGRATOR

NULL

DETECTOR

TRANSFER..-J

RESETSW

RESET-nSIGNALrl:REFERENCE:tREFERENCE~RESET~SIG'

10,000

I

INTEGRATE

COUNTS

100

MSEC

(HIS)

~+8V

INTEGRATE

10,000

COUNTS

100

MSEC

INTEGRATE

(F/S)

10,000

100

COUNTS

MSEC

10000

'100

COUNTS

MSEC

I I

I

INT.

I I I I

I I I I I I I

I

OUT

I

O~

81

0

---1

082

SIG

INT---,

I

I I

I

r

I

r

I

I I

L

I

RESET

SIGSW

+

REF

SW

I

---1

I

~

I I

I

r

I

L

Figure 4.12 -Measurement Timing Cycle continued

4-11

Table 4.1 -Sequence Chart

ARTEKMEDIA => 2012

-

+ Signal =

Qe 1

Qel

I.OOOOV

= High, Q

= Low, Q

= High, Qe2 = Low

2 = High

e

2 = Low

e

DC,

2.

Range

SIG

(1) (2) (3) - N.D. (4) (5) INTERNAL RESET goes low (caused by 2, 3, 4) (6) (7) (8) (9) (10) POL

(1)

(2) (3) - REF

(1) NUlL DETECTOR OUTPUT goes high (zero detect)

(2) (3) INTERNAL (4) (5) - REF (6)

INT goes low

+ N.D.

FIF

(Ull)

Q goes high

F/F

(Ul2)

<1

goes high

RESET goes high

TRANSFER goes high (Armed for digitizing sequence) RESET SIG NULL DETECTOR OUTPUT goes low

POL F

SIG SIG

+ N.D. F

TRANSFER goes low (signals

RESET

SW

goes low (releases sw's from Auto Zero)

SW

goes high (connects iso out

FIF

Q OUTPUT goes high (to enable - ref

IF

Q OUTPUT goes low (set pol dr F

INT goes high SW

goes low (disconnects iso out from integrator in)

SW

goes high (connects

IF

(Ull)

Q goes low (causes internal reset to

RESET goes high (causes transfer to

SW

goes low (disconnects

SW

goes high (closes

to

integrator in)

(to

detect polarity)

IF

-1

V ref to integrator in)

CMOS

counter to stop count)

-IV

ref from integrator in)

rc::set

switches - Auto Zero)

Q

sw

output

go

@refint)

high)

go

high)

low)

(1)

Qel

= Low, Q

In

addition

in table 4.1. This chart

operation urement cycle. Its basic purpose reading the detailed description presented in the following

paragraphs.

while reading the detailed description.

Four timing segments

3814 counter, on the Display

frequency

exactly

output The timing sequences are

Qe

Q

to

the illustrations, a sequence chart

of

the timing and control circuits for one meas-

It

will also serve

.of 100 kHz, these four timing sequences are

100 msec in duration. They are established by the

of

the last cOunter bit (1/2 decade), Qel and Qe2.

1 =

1,

Q

2 = 1

e

100 msec, count from 30,000 to 39,999 called

Signal Integrate

l = 0, Qe2 = 0

e

100 msec, count from 00,000 to 09,999 called reference integrate. This count total limit to

as

half-scale

2 = High

e

is

a syt'lopsis

as

a handy reference

are

established by the

PCB.

as

follows:

is

of

the sequence

is

for reference after

CMOS.

With an internal clock

RESET

presented

to

use

chip,

is

referred

of

SW

is

high (Auto Zero)

Q

1 =

1,

Q

e

100 msec, count from 10,000 to 19,999 called reference integrate. This count total limit to

= 0, Qe2 = 1

Qe 1

100 msec, (fixed)

In the following example, a

to the isolator amplifier input. The isolator,

has

an output voltage grate period integrator input, resulting in a negative going slope, to

approximately The null detector input senses the negative integrator slope voltage and causes the null detector negative TTL level. The null detector low inverted through UlO and applied to Ul2-2, the D input the polarity F logic low, which when applied to the D input

drive F

IF,

to annunciate the

2 = 0

e

as

full-scale

countfrom

of

is

detected, this + 1.0V dc

-4.0V

IF.

U8-2, causes the Q

at the end

This causes UI2-6, the Q

"plus" symbol on the readout.

20,000 to 29,999 called reset

+ 1.0V dc input signal

at

+ 1.0V dc.

output,

When

the signal inte-

is

applied to the

of

the 100 msec period.

output

U8-6 to

to

output

of

the polarity

be

is

referred

is

applied

a gain

of

go

output

to be

logic high

1,

to a

is

of

4-12

At the start

ARTEKMEDIA => 2012

V9-3, signal integrate, goes logic low. This logic level

applied to the "clear" inputs, pin 13, This causes the Q outputs which

. respectively. Signal integrate at a logic low causes the out-

put

of

11

be

at logic low and when inverted through

output at pin 8 to be logic high. This signal

transfer. When the start

must

crossing (null detect) occurs the falling edge nals the terminated and transferred to the latches for multiplexing to the readout segments in digit sized bytes.

When digitize sequence, lateral signal switch, to the integrator input, ramp in a negative slope for a period

At the start

8 goes low; this

that drives the reset bi-Iateral switches, V16B and release the integrator from the reset state called Zero."

At the end when inverted through V14, disables the signal switch, disconnecting the integrator input from the isolator output. polarity F

V13

pin 8

applies logic high levels to the three inputs

output

the drives the a

-l.OV

quence called reference integrate, whose purpose

the integrator

is

zero high state; which, when inverted through VIO, level

at the clock input, pin Detect F output

inverted, causes the reset bi-lateral switches,

VI6C, to close; placing the integrator

called

also

causes the transfer to

termination

of

the signal integrate sequence, the

of

VII

of

Ull

and V12 to go logic high,

is

applied to the inputs

V9-6 to

input

go

CMOS

signal integrate

detected, the

IF,

of

"Auto Zero." The inverted

go

logic high, which

of

V13, which results

of

to a logic high (ARMED),

3814 counter that the

is

at a low state, at the beginning

it

is

inverted through

VI6A,

that

of

signal integrate, when the

is

inverted through V 10-6 and V

of

signal integrate, V9-3 goes logic high, that

As

previously mentioned, the Q

IF,

V12-5

is

at a high state. Also the

is

logic low, which when inverted through

at pin 6

"-"

dc to the integrator input during the second

whose Q

V13 pin 8 to

of

to

go

logic low. This inverted output

reference bi-lateral switch, VI5C; connecting

output

signal back to a zero level. When the

output

go

the clock count

of

V13, pins 9 and 10

is

also applied

in

the

output

VI0

signal integrate occurs, transfer

so

that when a zero

of

BCD

count

V14

to drive the

to connect the isolator output

starts the integrator

of

output

of

V13, causing

of

the null detector changes to a

ca'.ls~s

11

of

VII,

of

the Plus Signal

goes logic low, causing the

logic high. This

to a logic low that signals the

in

output,

in

a configuration

output

of

the

CMOS

output

and V12.

to

the

V13-8 to

causes the

is

called

transfer

100 msec.

V16B and

V13 pin 8

is

to

of

output

of

VI3

14-4

VI6C,

"Auto

bi·lateral

of

output

VI0

is

to drive

a low

double

3814.

sig-

bi-

the

se-

of

be

to

of

3,

sensed, the next sequence, state

is

a

until sequence 4, which

If a null detect

1000 counts (5%

lowest range (in auto range) a down range

If a null detect accumulated in the ciated on the readout, flashing 20000, for a manual range or highest range per function

is

and overload one range. This 3814 counter, which When null detect has

is

detected

logic high to detect

If

the input signal to the

inverted output

F

IF

"D" pin 6 to the Plus Reference

integrate. sequence two is entered and 2)

to the Polarity Drive F

be

logic low or minus polarity.

to

output

The

signal, goes to a logic low level when zero detect this causes the causing the transfer to count.

4.23 Counter. The heart

Digital Voltmeter logic array, shown on figure

counter, latch, detailed illustration

It

contains four full decade coun ters, two overflow latches,

an

underrange output,

drive a

puts to strobe the display. The 3814 counts four full digits

and the overrange digit. The input to the 3814 chip. The decade counters change state on

4.24 The clock pulse to provide a divide-by-one hundred ( put. This clock pulse 3814 and a synchronous timing pulse for the data programming operations. The step input clocks a ring counter that drives the multiplexer.

BCD

the rising edge

sensed, the range counter,

as

the fixed reset period the Qe2L line goes

of input at be

logic low to

of

Q

4·1ine

to seven segment converter, and decoded out·

output

is

a fixed reset sequence.

is

sensed, during sequence state 2, before

of

range), and the

is

not

sensed before 19,999 counts

CMOS

is

a result

"overload" or

the null detector is applied to the polarity

VI2·2,

the null detector, for a negative input

output,

of

the clock pulse.

of

3814,

..

of

is

latched

not

been sensed and the

DMM

which now causes the Q output at

be

applied to

bi·lateral switch when the reference

IF

to cause the Q

pin 8

go

logic low, terminating the

of

decoder, and multiplexer. A more

this device

an

overrange output, outputs to

the second decade

is

used to drive the step input

is an "internal" reset

DMM

is

not on the

is

commanded.

an

"overload"

If the

DMM

the Qe2

100 kHz clock drives the

output

as

an

output

"up

range."

is

of

negative polarity, the

I)

Ul3-2 to enable

V8-2,

output

of

Ul2,

the instrument

is

shown

is

annun-

is

in auto range

V4

is

advanced

of

the

CMOS

called Qe2L.

4th

sequence

"D"

input

of

V8 pin 6

is

sensed,

to go logic low

CMOS

is

the 3814

4.1

as

in

figure 4.13.

gated with the

.;.

100) of

outputl

is

the

CP

out·

the

At this point, the digitizing sequence sequence 2,

is

only

at

the end

but

because a zero detect (null detect) has been

of

4.25 The 1 is

3814

buffered and used

output

of

the fourth decade counter in the

as

a

divide-by-t~o

thousand

4-13

-

ARTEKMEDIA => 2012

M

TRAN

4

~[>-

T TES

K

2

3 P

10 COUNT

PAUSE

P

C

1 2

S

SYNC

'}

+10

+100

120

19

-

A

-

)

A

--C

J J

B

3814

,.

-

C

~

)

0 E

f...-.......<:

';'4

DO

01

J

0--

~

[>-

{>

18

a

16

"0

E1

E2

BLN

12

o

~

OET

0 E

LATCH

Lc

f

Lc

I

f f

-C

f

P

3

K

BLANKING

CONTROL

ABC

6

SCANNER

j

17

21

22

7

8

111

STEP

-{)

4::

f

B

IA

: I

C SELECT 0

E

MULTOPLE,,"

02

°1

4

clo

03

5

9

a

{>

E

04

Vss

VGG_

VOO

10

6

E2L

2 1 1

4 5 3

4-14

Figure

4.13 - Logic Array

(

ARTEKMEDIA => 2012

.;-

2,000) output. This

that

is

less

than enabled before the divide·by·2,000 output will signal the auto range circuitry

5%

output

of

full scale.

is

used

to

If

the transfer pulse

output

indicate a signal

goes high the

that

change must be made.

4.26 The are

designated

step the

QO

and

Ql

flip.flop

as

Qe 1 and Qe2 outputs. These outputs

DMM through the various periods

outputs

of

the

5th

of

gration process. The signal codes are:

. Qe2

Qel

100

ms

- Signal integration - decade counts

from

30,000

to

39,999

o 0 100 ms - Reference integration - decade

counts from

00,000

to

9,999 H/S

o 100 ms - Reference integration - decade

counts from

o 100

ms

20,000

4.27 The Qe2 output.

If

output

a DMM uses a full scale count the 3814, the high state overrange condition. The Qe2L to read

20,000 at a flashing rate.

10,000

to

19,999F/S

- Reset - decade counts from

to

299,999

is

latched and used

of

Qe2L is used

output

as

of

19,999 using

to

indicate an

causes the display

is

a range

counter

the inte·

the Qe2L

==

4.31 Qe 1 switch is turned

nected

to

0 and Qe 2

off

the input switch. The decade counter will ignore the

first

10 counts are ignored. This period allows for masking

O.

During this period the signal

and a reference (plus or minus)

of

the integrator through a bi·lateral

is

set

to

00,000 and the 3814

10 counts. Because

of

the 3814, the

is

con·

the noise at the time when the signal integration switched detection at or near zero analog

to

the reference integration

to

prevent

input

signals. The count

false

zero

started from 00,000 until the null detector crosses zero and signals .the detect signals the transfer input

end

of

the reference integration period. Zero

to

store the BCD count

of the decade counters into the latches. If the transfer occurs before the

5%

of

is

in

4.32 period is from of

the

4.33 the analog and reference inputs to the integrator are moved and bi·lateral switches short the integrator input the

output

of

this period

.;-2000

full scale and a down range

au

to

range.

Qe

1

output

==

1 and Qe2

goes true, the signal is

is

commanded if the DMM

==

O.

This reference integration

10,000 to 19,999 which is the F /S capability

DMM.

Qe

1

==

0 and Qe2

==

1.

This is the reset period when

in a configuration called auto zero. The count

is

from 20,000

to

29,999. If the

less

than

reo

to

Qe2Loutput

goes true before zero detect signals a transfer, an uprange

commanded detected and

if

the DMM

the

display indicates overrange.

is

in

auto range and/or overload

is

necessary

BCD

4.28 The edge sensitive transfer input causes the data in the counters

to

be stored

in

the latches on the falling edge. Synchronization with the clock to prevent loading and storing erroneous counter states at a

"carry"

command

is

trickling through the counters. A transfer

is

accepted once during an integration cycle.

An internal flip·flop is reset by the counter transition from 39,999 remains set until the next integration sequence. transfers will be accepted when this flip·flop

4.29 The clock pulse counter. As previously mentioned the states Qe2 control the state

to

00,000.

It

is set when a transfer occurs and

is

constantly adding counts

of

Qe 1 and

of

events

that

take place during an

is

to

No

set.

the

integration sequence.

4.30 Qe 1 30,000 this time the

amplified, converted, and/or filtered and connected integrator input through a ward circuit the integrator

==

1 and Qe2

to

39,999. This

DMM input signal which has been attenuated,

of

the integrator adds 10 digits

output

==

1.

The counter advances from

is

the signal integration period. At

bi·lateral switch.

The

to mask the switching transients that

feed for-

of

voltage to

to

the

occur during the transitions from signal integrate to reference integrate.

4.34 The step input from the BCD

the multiplexed decoder/driver, such Oa

to

Oe

drive transistor circuitry

outputs

as

a SN7447. The decoded outputs

capable

output

of

driving a single

that

strobes the anodes

presents

.;-100

the display devices one at a time. .

4.35 4·to-7 Line Decoder. The 4-to·7 line decoder

shown on figure 4.14. This device coder

that

converts

BCD

code purposes. It's driven by the counter chip and its

I

of

the display LEDs.

FROM

3814

Figure

BCD

2

4

7·line

output

...--

__

4.14

- 4-to-7 Line Decoder

is

simply a matrix de·

to

7·line code for display

BCD

code from the 3814

is

tied in parallel to all

...,

SEGMENT

a

b

c

TO

DISPLAY

LEOS

d

1

TO

e

9

5

of

is

4-15

FROM

ARTEKMEDIA => 2012

MUX

A

B

--~~--------------~~----------~~----------~------------~

C

D

E

DC

I

?

__________

__

? ?

-

?

"OL-[:>o-

U

=

~-~----}

FROM

DECIMAL

DECODER

.2

2.

20~

200~

2K

FROM

4·TO·7

DECODER

•

b

c

d

•

f

g

BATTERY

"LOW"

-----..

-----'

LINE

IND-

U=U

O=U

C

.2

U=U

= =

Uc==U

()

L,

~

""'--

Figure 4.15 - LED Display

L,

2

~

=

U

Uc==

C

L

20

U

~

0==

C;>

200

= =

0

U U U

=

U 0 0

)

L

~

2K

r--

=

L

~

4.36 LED Display.

play circuit five vice. The to the inputs digit code and 7-bar form digit display device the multiplexer energize the enable line A and the device will display the numeric value on the 7-line bus at

The counter then changes the code on the the next digit and the multiplexer energizes

B.

This on the display devices and the sequence begins again with the lower digit. The LEDs are illuminated only the strobe lines A through E from the multiplexer are

4-16

is

shown on figure 4.15. The display consists

7-bar LED display devices and the polarity display de-

output

is

of

the five 7-line display devices. When the

repeated until all the codes have been displayed

A functional diagram

the 7-segment decoder is tied in parallel

is

on the line for the low order

in the counter chip will

that

time.

output

the

of

the

dis-

bus to

strobe line

as

long

of

as

is

to

is

detected

to

such

the

is

the

energized. However, this display strobe frequency

that the LEDs appear persistence characteristic output appropriate display device. The polarity signal is applied

to the polarity display LED. The polarity signal and produced by the Timing and Control signals and shown on figure 4.1.

4.37 Range Control Logic; The range control logic is

illustrated in simplified form in figure 4.16. The range control circuits control the gain tion in the

voltage attenuator and current shunt circuits. In addition,

the range control circuits provide a range code

from the decimal decoder

AC

to

be continuously Itt due

of

the human eye. The decimal

is

applied directly

of

the isolator, the attenua-

Converter and the attenuation in the

1~.-3Ir--~")+SV

ARTEKMEDIA => 2012

AC

RELAY

POWER

ISO

ENABLE

X1

X10

SW

52-2

51-2

52-2

53-4

SS-2

STEP OR

OIL

RESET

CLOCK

UP &

AUTO

UP

SW'S

AC

KSl

D Q

CLK

---,\IVI.,--II--I

12

+SV

RANGE

COUNTER

R1

R2

R4

ROM

&7

K3

K4

KS

K6

K2

ATTENUATOR & CURRENT

K1

RELAYS

+SV

1

....

_.--:..R::2:....

I,

1000

R1 }

R4

SHUNT

·-4--AC

AC

RELAY

D!gIMAL

DECODER

(DISPLAY)

20·200

RELAY

~------------------------------~--~

T-----------e

56.2----------+-------4--r-""'"

STEP

DOWN

OR+2K

57-2

-11--

57-4

57-3

......

----,

CLK

a

CLR

~D

Figure 4.16

-Range

Control

4-17

decimal decoder for positioning

ARTEKMEDIA => 2012

front panel display. The heart cuits

is

the range counter, a three state UP/DOWN counter

controlled by a pair

is

to

range

be

of

stepped from S5-2 in combination with the clock applies a pulse the

UP

input

of

the range counter, thereby increasing the

of

the decimal point on the

of

the range control cir-

UP/DOWN flip-flops. When the up

manually the switch closure

to

count. Manual down ranging is accomplished in exactly the same way by a switch closure from S6-2 when pushbutton DOWN the counter. greater than 100% null detect nal

is

counter

is

depressed. In auto range, the same UP or

flip-flops are set by two signals which come from

If

the counter reaches a

of

the measurement count prior

it

produces an overload (O/L) signal. This

applied

to

the step-up flip-flop and causes the range

step

up

one count.

If

the null detect signal

count

(he

DOWN

which

to

is the sig-

5%

of

count

point in its

full scale.

flip-

down one

should occur before the counter reaches the count a signal termed divide by 2K ( cating

that

the measurement

is

less than

-7

2K) is produced indi-

This divide by 2K signal is applied to the step-down flop, which causes the range counter

to step. Thus, the manual pushbuttons, or the internal logic, cause the range counter

to

step to the proper range and produce the range codes R1, R2, and R4. The range code has applied

to

the decimal decoder

to

locate the decimal point on the front panel display. In addition the range codes are applied figured by internal

to

the read-only memory, which

firm~are,

to

produce relay control

is

con-

signals which configure the attenuator and current shunt relays. The isolator gain

read-only memory, and by the switch positions

is

controlled

by

the range counter,

of

the

function control switches on the front panel.

4-18

~\

ARTEKMEDIA => 2012

SECTION

5.1

INTRODUCTION.

5.1.1 This section contains information necessary check the calibration adjustments and malfunction. receiving inspection or specification validation purposes. This maintenance information is organized

of

and

(I)

(3)

maintenance.

two levels

5.1.2 The section sections; ment troubleshooting. Tests and Subassembly Performance Tests.

performance tests are designed

5

of

the Model

to

troubleshoot the instrument

The

calibration checks are also used for

is

Calibration Checks,

Troubleshooting Performance Tests.

is

further divided

divided

to

4600,

perform calibration

to

into

three major sub·

(2)

Calibration Adjust-

into

Unit Performance

check the

provide for

The

instrument

in

case

The

unit level

of

by

to

MAINTENANCE

function, such as function assembly performance tests are designed operation function

S.2

5.2.1 This subsection tains instructions and reference information for checking the calibration

are presented

ment nection is illustrated for each calibration check.

to

of

to

CALIBRATION

function.

AC

Volts, and enable isolation

a replaceable module or subassembly.

to

a module

an individual

or

subassembly and isolate a mal-

component

or circuit.

CHECKS.

of

the maintenance scction con-

of

the

Model

4600

DMM.

in

tabular form and arc organized

In

addition, the test

The

setup

instructions

and intercon-

of

a mal-

The

sub-

check the

by

instru-

5-1

Table 5.1 -

ARTEKMEDIA => 2012

DCV

Calibration Check

Input and Control

Setting

Function:

DCV Range: Auto Input Terminals:

and

J4

(La) connected

13 (Hi)

with a copper jumper

DMM

Range Signal Input

.2

.2 .2

2.

2. 20 20 200 200 2000 2000

0.00000

+0.19900

-0.19900 +1.9900

-1.9900 +19.900

-19.900 +199.00

-199.00 +1000.0

(max. input)

-IOOO.O(max. input)

Performance

Standard

Readout

to

+.00002

-.00002 (NOTE: offset greater than

±2

digits will require adjustment

of

R45 (front panel) on +.19894

-.19894 +1.9897

-1.9897

.2

range)

to

+.19906

to

-.19906

to

+ 1.9903

to

-1.9903

+19.897 to +19.903

to

-19.897 +198.97

-198.97 +0999.8 to

-0999.8

-19.903

to

+199.03

to

-199.03

+1000.2

to

-1000.2

DMM

downranges in auto, from 2000 Range to 210 Range @ ±0099.9 Vdc.

DMM

downranges

DMM

downranges in auto, from 20 Range to 2 Range @ ±00.999 Vdc.

DMM

downranges

DMM

upranges in auto, from

DMM

upranges in auto, from

DMM

upranges

DMM

upranges

Short input terminals

and check:

in

auto, from 200 Range to 20 Range @ ±009.99 Vdc.

in

auto, from 2 Range to

.2

Range to 2. Range @ ±.20000 Vdc.

2.

Range to 20 Range @ ±2.0000 Vdc.

in

auto, from 20 Range to 200 Range @ ±20.000 Vdc.

in

auto, from 200 Range to 2000 Range @ ±200.00 Vdc.

13 and J4 and manually

.2

range for maximum offset

2.

range for maximum offset

20. range for maximum offset

200. range for maximum offset

.2

Range @ ±0.0999 Vdc.

UP

or

DOWN

range

of

±2

of

±1 digit

of

2000. range for maximum offset

DMM,

digits

±1 digit

± 1 digit

of

±1

digit

5-2

Table 5.2 -

ARTEKMEDIA => 2012

ACV

Calibration Check

Inpllt and Control

Setting

Function:

ACV

Range: Auto Input Terminals: and 14

(Lo) connected

13 (Hi)

with a copper jumper

DMM

Range

.2

Signal Input Frequency

OVAC 2 OVAC 20

OVAC 200 OVAC 2000 OVAC

.2 .2 0.19900 .2 .2

2.

0.19900VAC 30 VAC

0.19900

1.9900

VAC VAC

VAC VAC VAC VAC

20 19.900VAC 30

20 20 19.900 20

200 199.00 2000 2000 2000

19.900VAC VAC

19.900

VAC

to

20.00

500.00

500.00 30

to

500.00 50

to

1000.0 30

(max.)

2000 500.00 to 1000.0 50

(max.)

Performance

Standard

Readout

.00000

0.0000

00.000

000.00

0000.0

Hz

to 50 Hz .19810 to .19990 50 500

Hz

to 500

Hz

to 50 kHz .19868

.19850 to .19950

50 kHz to 100 kHz .19720

to .00040

to

0.0005 to 00.030 to

000.05 to 0000.5

to

.19932

to

Overload

(manual range) or

0.2005 (auto range to 2. range)

30

Hz

to

50

Hz 1.9830 to 1.9970

50

Hz

to 20 kHz

20 kHz to

50

kHz 1.9870 to 1.9930

1.9871 to 1.9929

50 kHz to 100 kHz 1.9746 to Overload

(manual) or 02.005 (auto

to

20 range)

Hz

to 50

Hz

50

Hz

to

20 kHz 20 kHz to 50 kHz 50 kHz to 100 kHz

19.820 to 19.980

19.868 to 19.932

19.864 to 19.936 to

19.743

Overload (manual) or 020.05 (auto to 200 range)

(Spec

is

the same

Hz

to 50

Hz

to 20 kHz

Hz

to 50

Hz

to 20 kHz

Hz

as

the 2. range)

0496.7 to 0503.3

0498.7 to 0501.3

0994.0 to 1006.0

0997.5 to 1002.5

5-3

Table 5.3 - KOhms Calibration Check

ARTEKMEDIA => 2012

Input and Control

Setting

Function: Kohms Range: Auto Input Terminals: 13

and

J4

(Lo) connected

with a copper jumper

DMM

Range

.2Kohm 2Kohms 20 Kohms 200 Kohms 2000 Kohms

20,000 Kohms

Table 5.4 -

Input and Control

Setting

(Hi)

Signal Input Readout

199 Ohms

1.99 Kohms

19.9 Kohms

199. Kohms

1.99 Mohms

19.9 Mohms 19859 to 19941

DCV

/mA

Calibration Check

Performance

Standard

.19888 to .19912

1.9889 to 1.9911

19.889 to 19.911 to

198.89

1987.9 to 1992.1

199.11

Performance

Standard

Function: Range: Auto Input Terminals:

J2 (Lo) connected

and with a copper jumper

DMM

Range

.2 2 +1.99 20 +19.9 200 2000

Input and Control

Setting

Function: Range: Auto

Input Terminals: and with a copper jumper

ACV/mA

J2

(Lo) connected

JI

DCV /mA

Table 5.5 -

(Hi)

JI

(Hi)

Signal In pu t

+199,P-ADC

mA mA

+199.

mADC

+1.99ADC

ACV

/mA

Readout

+.19872

DC

Calibration Check

+ 1.9872 to + 1.9928 +19.872 to +19.928 +198.72 + 1982.0 to + 1998.0

to

+.19928

to

+199.28

Performance

Standard

5-4

DMMRange Signal Input

.2 199 2 20 200

2000

JJ.A

1.99

mAAC

19.9mAAC 199 mA

1.99AAC 50

AC

Frequency Readout

50 Hz

to

10 kHz

50 Hz

to

10 kHz 50 Hz to 10 kHz 50 Hz

to

10 kHz

Hz

to

10 kHz

.19840 to .19960

1.9840

19.840 to 19.960

198.40 to 199.60

1982.0 to 1998.0

to

1.9960

5.3 CALIBRATION ADJUSTMENTS.

ARTEKMEDIA => 2012

5.3.1 Test setup and sented checks indicate the need for adjustment, perform the appropriate adjustment procedure. Like the calibration

checks the adjustment procedures are organized by instrument function. This section covers the calibration Dana Model return the instrument indefinite periods applying known input levels and adjusting the appropriate

component for the indicated value. A list quired to perform the calibration procedure table 5.6.

in

this suhsection. If performance

4600 Digital Multimeter and

5.3.2 Disassembly

a.

Place instrument extended towards the back

ad.iustlll~nt

to

its published speCification for

of

time. The procedure consists

of

the instrument case is

on

a flat level surface with the bail

instructions are pre·

of

the calibration

is

of

equipment is

of

the instrument.

of

the

designed to

of

reo

provided in

as

follows:

WARNING

b.

Disconnect the power cable and remove the screws on the back panel.

c.

Slide the instrument

5.3.3 The following steps are performed prior

any adjustments

a.

Check the line voltage requirements stamped on the serial tag located on the back

ment and insure

the same. Connect the instrument set the power switch to

minutes for the instrument

b. Refer

test equipment

warmup time.

to

the instrument.

to

the operating manuals provided with the

out

of

the case.

of

that

the available power source

to

ON. Allow at least

to

temperature stabilize.

to

be used and provide appropriate

to

making

the instru-

is

the line and

30

Removal

On units equipped with battery pack option the

power supply charges the batteries even though the

power switch with internal connected to the

Minimum use speCifications are the prinCipal parameters required for performance to

assist in the selection factory performance current calibration.

Item Minimum

DC

Voltage Standard Adjustable, .003% Accuracy

AC

Voltage Standard

of

alternate equipment, which may

of

alternate items shall be verified prior

of

covers exposes potentially lethal voltages.

is

in the

AC

Table 5.6 - Required Equipment

Adjustable

400

Hz

to

.03% Accuracy

off

position. Avoid contact

primary circuits when instrument

AC

line.

NOTE

be

used at the discretion

All

applicable equipment must bear evidence

KV

RMS,

Use

.1

V

RMS

100 kHz

to

use.

Specifications

- 1

is

of

the calibration, and are included

of

the calibrating activity. Satis-

Calibration

Equipment

FLUKE 332B

HP

745/746

of

Microvoltmeter Resistance

Tools:

Phillips # 1 screwdriver, insula ted blade adjustment tool

Standards

10

p.V

resolution, center zero

1

Kn

}

10Kn

Known to

--

.01%

FLUKE 845AR ESI SR-l Series

--

5-5

R45

ARTEKMEDIA => 2012

o

0

C2

I

R291

oUo

R3

C4 C6

a

R5

6

I

Ra71

I

R331

h{1

I

R351

MECCA

o

AC

EL

CONVERTER

~W9

,

(FSV)

Set the instrument controls

c.

FUNCTION: Volts

RANGE:

INPUT:

~

DC

200mV

Shorted

W1

I R5111R6911 R6711

as

follows:

Figure

5.1 -

R741

Calibration

5.3.5 CALIBRATION PROCEDURE.

5.3.6 The following steps

prior to range calibration.

Points

a.

EJ

are

for zeroing the instrument

Disconnect signal enced to be

such that R82 has no effect if adjusted.

WI

jumper. Apply a 1 millivolt dc

to the integrator

Mecca.

The polarity

side

of

WI

this

0

signal

,refer-

should

5.3.4 The locations

for in the procedure

5-6

of

the calibration points

are

indicated in figure 5.1.

as

called

b.

Adjust decimal). Reverse the polarity signal

R81

for a display

and adjust R82 for a display

of

00010 (disregard

of

the 1 millivolt

of

.00010.

Apply +1.9900 to

ARTEKMEDIA => 2012

c.

of

+19900.

d.

Apply

-1.9900

of

-19900.

e.

Remove 1 millivolt dc signal from connect WI. Connect a microvoltmeter input to DMM

WI

input terminals.

and

WI

and adjust R74 for a reading

to

WI

and adjust R67 for a reading

"Low"

input to

WI

0 and

MECCA.

re-

"high"

Short

g.

Select 20 volt range and adjust R59 for a micro-

of

voltmeter reading and g until no adjustment

o ±

10

/J.V

reading.

5.3.7 The separate table for each function. After the function and range have been selected, the component listed in the ADJUST column Where no adjustment verification

rema,inder

is

adjusted for the indicated display value.

is

of

proper instrument operation.

0 ± 10

of

the procedure consists

indicated, the calibration step

/J.V.

Repeat steps f

is

required for the

is

of

for

a

f. Select dc function and .2 volt range. Adjust front

panel zero R45 for a microvoltmeter reading of

0 ± 10

FUNCTION RANGE INPUT ADJUST DISPLAY REMARKS

DC

Reduce input voltage

FUNCTION

AC

~N.

.2V +.19900

20V 200V 1

KV

to

zero volts and remove from input.

RANGE

1 KV 1

KV

Table 5.7 -

+19.900 +199.00 +1000.0 R33 +1000.0

Table 5.8 -

INPUT ADJUST DISPLAY

1 KV@ 1 kHz 1

KV@20kHz

DC

Calibration Adjustment

AC

Calibration Adjustment

5.3.8 At the completion cord from line. Reassemble case by reversing the procedure of

paragraph 5.3.2.

R51 +.19900 R29 +19.900 R31

R23

C2

+199.00

1000.0

of

the procedure, remove power

REMARKS

Reduce input to

.2

volts

Remove signal from input

FUNCTION

Kn

.2V

.2V 20V 20V

RANGE

.2Kn

20Kn

2Kn

.19900 @ 1 kHz .19900 @ 70 kHz

19.900

@ 1 kHz @ 70 kHz

Table 5.9 - Resistance

INPUT ADJUST

Short

10.000

1.0000

Kn Kn

Calibration Adjustment

R3 C4 R5 C6

R87 R69 R35 1.0000

.19900 .19900

19.900

DISPLAY

.00000

10.000

REMARKS

Repeat until no

adjustment required

5-7/5-8 Blank

THIS

ARTEKMEDIA => 2012

PAGE

LEFT

BLANK

SCANS

By

ArtekMedia

5.4 TROUBLESHOOTING PERFORMANCE TESTS.

ARTEKMEDIA => 2012

5.4.1 This section contains Unit and Subassembly performance tests. The unit performance tests are designed isolate a malfunction circuit board. In some cases where the printed circuit

is

board isolate the malfunction

The unit performance tests are organized by instrument function such

"single thread" diagram is provided for each

performance tests. These diagrams show the primary signal

path through the instrument for the individual function

the instrumen t.

5.4.2 The subassembly performance tests are designed isolate a malfunction to a component or small group components on a printed circuit board.

These tests are organized by subassembly such

play

5.4.3 Both the unit and subassembly performance tests present test setup instructions, step monitoring the circuit under test and performance standards in

addition the tests are fully illustrated "single thread" diagrams or schematics which illustrate the test point location within the circuit under test.

in locating the physical test point within the instrument,

pictorial drawings are provided on pages schematic.

5.4.4 Test points called

be points or they may simply be circuit locations such end

case the test points appear

black squares or diamonds. These "flags" also appear on

the corresponding schematic and on the pictorial drawing

in

large and complex, the unit test

PCB

or the

the form

actual physical test points provided

of

the drawing section

of

voltage levels or oscilloscope waveforms. In

a resistor or the emitter

to

as

AC

volts,

AC

converter board.

of

a replaceable module or printed

is

designed to

a functional area

DC

volts or Kohms. A

by

out

in the performance tests may

of

a transistor. In either

in

the performance test tables

this manual.

of

the

of

as

step instructions for

by

either the

faCing

as

convenience test

to

board.

the unit

of

to of

the

dis-

For

ease

the

as

the

as

waveform illustration pages immediately following the performance test table. The numbered test points refer to

square black test point flags drawing and schematics black square test point flags indicate voltage ment points. Si,nilarly the alphabetic test points refer to

black diamond shaped flags drawings and schematics. The Alphabetic diamond indicate oscilloscope test points.

5.4.6 To perform subassembly performance tests refer to

the appropriate setup presented setup

is

complete proceed with test and verify that the measurement at each test point for

in

the performance standard column any point or signal refer the area troubleshooting methods or circuit. The term conventional troubleshooting methods as used here means checking individual semiconductors,

resistors and capacitors function.

5.4.7

5.4.8 Tables formance tests. Note standards for voltage measurements and waveforms. The tolerance required for troubleshooting is looser than operating tolerances because the technician looking for the presence high tolerance standard. This allows the use broader range test equipment

bration requirements. Troubleshooting, unlike calibration, may be done with any equipment

5.4.9 The performance tests presented in this section are:

in

Unit Performance Tests.

test table, perform the preliminary test

as

the first few steps

the test you do

to

the appropriate schematic

of

the malfunction. Resort

5.10 through 5.14 present the unit per-

of

test equipment and also allows the use

that

II

appearing on the assembly

in

the drawing section (6). These

.appearing

is

within tolerances called

not

obtain the required voltage

to

identify the faulty component

in

and around the area

that

the tables contain performance

of

the signal rather than an exact

is

not

subject

that

on the assembly

of

the test.

of

the test. If at

to

high accuracy cali-

is

accurate

measure-

flags

When

the

to

determine

conventional

of

mal-

is

generally

of

a much

of

to

5%.

5.4.5 Note

so

as

to to the test point standard; the waveform standards are provided on

output.

that

the test points are numbered sequentially

start at the input

The performance standard for each

is

shown

in

the table

DC

Volts Unit Performance Test

AC

of

a circuit and progress

if

it

is

a voltage

WARNING

of

Removal On units equipped with battery pack option the power supply charges the batteries even though the power switch with internal connected

covers exposes potentially lethal voltages.

is

in the

off

position. Avoid contact

AC

primary circuits when instrument is

to

the

AC

line.

Volts Unit Performance Test KOhms Unit Performance Test DC

Milliamps Unit Performance Test AC

Milliamps Unit Performance Test

Table 5.10 Table 5.11 Table 5.12 Table 5.13 Table 5.14

5-9

Table 5.10 - DCV Unit Performance Test

ARTEKMEDIA => 2012

Input and

Function: Range: Input Terminals:

J4

and to a

DC

set at

Range: 2 (Manual) Set

DC

±1.9900V

to

Control

Setting

DCV

.2

(Manual)

J3 (Hi)

(Lo) connected

voltage standard

±0.19900V

voltage standard

Signal

Nomenclature

DC

Voltage Input

Isolator Input

Isolator

DC

Isolator Input SI-4 (N/C)

Output

Voltage

Input

Reference

Designation

S3-2 (N/C)

SI-4 (N/C)

E17

S3-2 (N/C)

Test Illustration Performance

Point Reference Standard

NOTE: All measurements are referenced to TPI (MECCA)

..

•

..

•

Fig. 5.2 ±0.19900V

± Tol.

Fig. 5.2

±0.19900V

± Tol.

±1.9900VDC

± Tol.

±1.9900VDC

± Tol.

±1.9900VDC

± Tol.

DC

Range: Set

ard to ±19.900V

Range: Set to ±199.00V

20 (Manual)

DC

Voltage stand-

200 (Manual)

DC

voltage standard

Isolator

DC

Isolator Input

Isolator

DC

Isolator Input SI-4 (N/C)

Isolator

Output

Voltage Input S3-2 (N/C)

Output

Voltage Input

Output

E17

SI-4 (N/C)

E17

S3-2 (N/C) Fig. 5.2

E17

•

..

•

..

•

Fig. 5.2

±1.9900VDC

± Tol.

±19.900VDC

± Tol.

±1.990VDC

± Tal.

±1.990VDC

± Tol.

±199.00VDC

± Tol.

±1.990VDC

± Tol.

±1.990VDC

± Tol.

5-10

Table

ARTEKMEDIA => 2012

5.10

continued

Input and Control

Setting

Range: 1000 (Manual)

DC

Set to ±1000.0V

voltage standard

DCV

(S4)

•

S2-1

0

Signal

Nomenclature

DC

Voltage Input

Isolator Input

Isolator

Output

0

10M

6

+

R

9M

10

R37

200K

Reference

Designation

S3·2 (N/C)

SI·4

(N/C)

E17

II

10

Test

Point Reference

Illustration

Fig. 5.2

•

II

..

Fig. 5.2

Fig. 5.2 ±l.OOOVDC

0

R44 lOOK

Performance

Standard

±1000.0VDC

± Tol.

±l.OOOVDC

± Tol.

..

R49 100

E17

S3-3

900K

U1SA

+100

90K

+1000

S3-8

0

9K

1K

Figure

5.2 . DCV Single

•

ENERGIZED

Thread

Diagram

X1

X10

4

U1sa

13

S

2

3

RSO

4.42K

R52

487

M

5·1I .

Table

ARTEKMEDIA => 2012

S.ll

• ACV Unit Performance Test

Input and Control

Setting

Function: ACV NOTE: All Range: Input Terminals: 13 (Hi referenced

I

and

to

ard set at 0.1990V @

10kHz

Range: 2 (Manual) Set

to 1.990V@ 10 kHz A C Signal In pu t

.2

(Manual)

J4

(Lo) connected (MECCA)

an

AC

voltage stand·

AC

Isolator Input

Isolator

AC

voltage standard

Isolator Input

Isolator

Signal

Nomenclature

Signal Input

Output

Reference

Designation

Sl·l

(COM)

S2·4(COM)

E17

Sl·1 (COM) Fig. 5.3

S2·4 (COM)

E17

Test

Point

•

Illustration

Reference

Fig. 5.3

Performance

measurements

0.1990V

-O.l990VDC

-1.9900VDC

1.990V

-1.990VDC

Standard

to

AC

are

TP1

± Tol.

±Tol.

± Tol.

Range: Set to

Range: 200 (Manual) Set

to

Range:

Set

to

20 (Manual)

AC

voltage standard

19.9V@ 10 kHz

AC

voltage standard

199.0V @ 10 kHz

1000 (Manual)

AC

voltage standard

1000.0V @ 10 kHz

AC

Signal Input

Isolator Input

Isolator Output

AC

Signal Input Sl·1 (COM)

Isolator Input

Isolator

AC

Isolator Input

Isolator

Output

Signal Input Sl·1 (COM)

Output

Sl·l

S2·4(COM)

E17

S2·4

E17

S2·4(COM)

E17

(COM)

•

Fig. 5.3

Fig. 5,3

Fig. 5.3

Fig. 5.3 -l.OOOVDC ± Tol.

19.9V

AC

± Tol.

-O.l990VDC

-1.990VDC

199.0V

-1.990VDC

1000.OV

-l.OOOVDC ± Tol.

AC

± Tol.

5·12

ACV

ARTEKMEDIA => 2012

(S2)

AC

POWER

AC

20 -200

S2-1

CONV

(ENABLED)

1000

RELAY

RELAY----

RELAY

$3-3

----

o

a

;m

I

'---

__

.... +-..........

AC

CONVERTER

~..JVV\r

.....

ASSY_.

-.I\II..,..,..

P'N

....

"""I\r

403873

!...!!L:!..

....

_;_-8---t-----'

II

•

AC

CONV

RELAYS

III

Figure 5.3 -

ENERGIZED

ACV

Single Thread Diagram

X1--+---

X10

.....

-------'

5-13

Table 5.12 - KOhms Unit Performance Test

ARTEKMEDIA => 2012

Input and

Function: KOHMS

Range:

Input Terminals: (Hi) and nected to standard set

Range: 2 (Manual)

Ohms standard to

Set

1.99 Kohms

Control

Setting

.2

(Manual)

J4

(1..0)

an

to

con-

ohms

1990

J3

Signa)

Nomenclature

+IVDCOhms Reference

NOTE:

Kohms Amp Node

NOTE:

Isolator Input

Isolator

Isolator Input

Ohms

Summing Node voltage

Output

. Reference Designation

S3-8 (COM)

Ref

voltage is constant for all Kohms measurements

Summing

S3-5

(COM)

Test lIIustration

Point Reference

•

is

constant for

S2-4(COM)

E17

S2-4

(COM)

all

Kohms measurements

•

II

Fig. 5.4

Performance

Standard

NOTE: All

DC

± Tol.

DC

are

± Tol.

± Tol. ± Tol.

± Tol.

measuremen ts referenced to TPI (MECCA)

1.000V

+

O.OOOV

-0.199V

-1.990V

-1.990VDC

Range: Set

19.9 Kohms

Range: Set

199. Kohms

Range: Set

1.99 Mohms

Range: Set

19.9 Mohms

20 (Manual)

Ohms standard to

200 (Manual)

Ohms standard to

2000 (Manual)

Ohms standard to

20000 (Manual)

Ohms standard to

Isolator

Isolator Input

Isolator Output E17

Isolator Input

Isolator

Isolator Input

Isolator Output E17

Isolator Input

Isolator Output

Output

E17

S2-4

E17

S2-4(COM)

S2-4

El7

(COM)

•

II

•

II

•

II

•

II

•

II

Fig. 5.4

-1.990V

-1.990VDC

-1.990V

-1.990VDC

-1.990V

DC

± Tol.

± Tol. ± Tol.

5-14

53-8

ARTEKMEDIA => 2012

KOHM5

+1V

OHM

(53)

ENERGIZED

52-1

0

+

IN

J3

E 11

53-2

0

53-5

.---/

0

REF

R109

10K

+1V

DC

FROM

REFERENCE

DIVIDER

-IN

RX

B

53-3

C26

0

53-1

X1----~------~

4

X10------------~

•

U15A

13

U15B

5

R49

100

2

3

•

R50

4.42K

R52

487

E17

Figure 5.4 -

KOhms

M

Single Thread Diagram

5-15

Table

ARTEKMEDIA => 2012

5.13·

DCmA Unit Performance Test

Input and

Function:

I

Range: .2 (Manual)

i

Input Terminals:

I

!

(Hi) and 12 (Lo) con·

nected to a current standard set to DC

I

Range: 2 (Manual) Set current standard to ±1.99

Range:

Current standard

Set to

±19.9

Control

Setting

DC

& rnA

±1991JA

rnA

DC

20 (Manual)

rnA

DC

11

Signal

Nomenclature

Current Shunt/ Isolator In

Isolator

I

Current Shun

I

Isolator

Isolator Output

Current Shunt/ Isolator In

Isolator

Output

In

Output

t/

Reference Test

Designation

K2

E17

K3

E17

K4

E17

Point

•

..

•

II

•

..

Illustration

Reference

Fig. 5.5

Fig. 5.5 ± Tol.

Fig. 5.5

Performance

Standard

NOTE: All measurements are referenced to (MECCA)

±O.l990VDC

± Tol.

±1.990V DC±Tol.

±0.1990VDC

± Tol.

±1.990V

±O.l990VDC

±1.990V

TP}

DC±

DC

i

I

Tol.

± Tol.

Range: Set current standard to ±199

I

Range: Set current standard to ±1.9ADC

200 (Manual)

rnA

DC

2000 (Manual)

Current Shunt/

Isolator In

Isolator

Current Shunt/

Isolator In K6/K7

Isolator

Output

Out

K5

E17

•

II

•

II

Fig. 5.5

±O.l990VDC

± Tol.

±1.990V

I

±0.1990VDC

± Tol.

±1.990V

DC

I

± Tol.

I

± Tol. I

i

5·16

DCmA

ARTEKMEDIA => 2012

(51 &

54)

o

..

51·4

53·1

o

+1

-I

~

E12

~M

13

5

2

3

R50

4.42K

R52

487

U15A

51·6

X1

0

4

U15B

X10

RANGE

K2

1m_

Figure 5.5 .

K4

K3

ENERGIZED

DOnA

K5

K6/7

Single Thread Diagram

ISO

GAIN

SHUNT

RESISTANCE

5-17

Table 5.14 -ACmA Unit Performance Test

ARTEKMEDIA => 2012

Input and

I Function:

; Range: .2 (Manual)

Input Terminals:

J2 (Lo) connected

and

I to

an

set to 199

I

Control

Setting

AC & rnA

AC

current standard

pA

I

Range: 2 (Manual) Set

AC

current standard

to 1.99

Range: Set to 19.9

rnA

20 (Manual)

AC

current standard

rnA

11

Signal

Nomenclature

(Hi)

AC

Converter Input

Isolator Input

Isolator

AC

Isolator Input

Isolator Output E17

AC

Isolator Input

Isolator

Output

Converter Input

Output

Reference

Designation Point

K2

S2-4(COM)

E17

K3

S2-4

(COM)

;

K4

S2-4

(COM)

El7

Test lllustra tion

Reference

Fig. 5.6

•

Fig. 5.6

•

Fig. 5.6

•

Fig. 5.6

•

Fig. 5.6

•

Fig. 5.6

Performance

Standard

NOTE: measurements are referenced to TPI (MECCA)

0.1990V

-0.1990VDC

-1.990V

0.1990V

-0.

-1.990VDC

0.1990V

-0.1990VDC±TOl.l

-1.990V

All

AC

± Tol.

± Tol. '

DC

± Tol.

AC

± Tol.

1990VDC ± Tol.

± Tol.

AC

± Tol.

DC

± Tol.

I

!

Range: Set

AC

to 199

,

I

Range: Set

AC

to 1.99A

200 (Manual)

current standard

rnA

2000 (Manual)

current standard

I

AC

Converter Input

Isolator Input 82-4

Isolator Output

AC

Converter Input

Isolator Input

Isolator Output E17

K5

El7

K6/K7

! 82-4

I

(COM)

I

,

•

II

•

Fig. 5.6

0.1

990V

-0.1

990V

-1.990V

I O.J990V

I-O.l990V

1-1.990V

AC

DC

AC

DC

± Tol.

DC

± Tol.

.t

± Tol.

To!.

± Tol.

I

i

I

,

I

5-18

ACmA

ARTEKMEDIA => 2012

(51 &

52)

AC

RELAY

AC

20·200

CONVERTER

POWER

(DISABLED)

1000

RELAY REL.AY

:m

2 I

I

51-'

0

8

..

:1

M'

0

Xl

goon

Xl0------------~

M

-I

~

E12

~M

Figure

5.6

-AemA Single Thread

nt:::::1::::1

ENE

Diagram

K4

RG I ZED

K5

K617

ISO

GAIN

SHUNT

RESISTANCE

5-19

5.4.10 Subassembly Performance Tests.

ARTEKMEDIA => 2012

5.4.11 Subassembly performance tests are designed to isolate a malfunction to a small group single

functional group

of

components. Once the trouble

of

components or a

is narrowed down to a small area the technician should resort to conventional troubleshooting techniques such as checking

as

individual components such

resistors, capacitors, semiconductors and applying heat and cold to individual components. Each accompanied by performance standards for each step test. These performance standards dc

voltages or waveform pictures.

In the

case

most complex

of

the subassembly performance tests

are

in the form

of

the main printed circuit board, the largest and

of

the PCB's, several performance tests have

of

the

static

is

WARNING

prOVided.

been

PCB

contains a number

as

the clock, isolator, range control and null detector.

Separate performance tests are provided for each

These tests are segregated because the main

of

separate functional circuits such

of

the

remaining smaller boards.

5.4.12 Note that the test points

in

the performance test tables refer to the performance standard or waveforms the test and drawings and schematic drawings in section 6 manual. The presentation troubleshooting section and again in the drawing section the manual

to

the test point shown on the assembly

of

assembly drawings in the

is

redundant

but

it

provides the necessary

of

this

of

continuity and makes the technicians troubleshooting job

easier.

in

Removal

of

covers exposes potentially lethal voltages. On units equipped with battery pack option the power supply charges the batteries even though the

is

in the

off

power switch

with internal

AC

connected to the

~osition.

primary circuits when instrument is

AC

line.

Avoid contact

5-20

Table 5.15 - Main

ARTEKMEDIA => 2012

PCB,

Power Supply (Line Only) Subassembly Performance Test

AC

line (only) Power Supply

the Front Panel controls

Set

as

shown in table S .IS.1

line

Cord Connected?

YES

Remove

DMM

Module from case and

verify that the line selector pcb

is

set to the proper line voltage

OK

Power

Switch On?

YES

Fuse good?

YES

Fuse blown?

NO

TRI

Secondary

(per table

AC

Voltages?

S .15.3)

YES

Measure rectified

DC

Voltages per table S.IS.4

Table 5.15.4

DC

Voltages Referenced to TPI (Mecca)

(114)

Connect

DMM

to

line sources

NO

Set power

sw.

to

enabled position (in)

Disconnect power cord,

YES replace fuse, and measure

TRI

primary/secondary

resistance windings per

table 5.15.2.

NO

Repair defective component(s)

Table 5.15.1

Control

rnA

ACV Kn DC

UP

DWN AUTO

13

(AC.DC.n

to 14

(AC.DC.n

Position

OUT OUT OUT IN

(enabled) OUT OUT IN

(enabled)

Hi) jumpered

Lo)

Table 5.15.2

Primary Resistance

114

1201

of

TRI

Line (L)

Setting to neutral (N)

100VAC 120VAC 220

VAC

240

VAC

40n±2n 42n±

142n± 154n±

2n

5n Sn

Secondary Resistances

16

to

16

to

0.8 to

1.6 to

2.6 to

5.2 to

16.5n

16.Sn 33n

0.9n

1.8n

2.7Sn

5.Sn

E43 to E47 E43 to E46 E46 to E47 32 to E42 to E44 E42 to E4S 0.8 to E44

to

E45

P8-1

to P8-2

P8-1

to P8-3

.P8-2 to P8-3

to +22.0 Vdc

CR26/27 Cathodes CR24/2S Anodes

Cathode

VR12 VRII

Anode VR13 Anode VR14 Cathode

+21.0

-21.0

to

-22.0

Vdc

+15.5 to +16.0 Vdc

-IS.5

to

-16.0

Vdc

-17.8

to

-18.1

V dc

+4.6 to +4.8 Vdc

Q12 Emitter +15.0 to +15.2 Vdc

-IS.0

to

-15.2

-17.3

Vdc Vdc

Ql1

Emitter

Q13 Emitter

DC

Voltages Referenced to

CR22/23 Cathode VRIO Cathode QlO Emitter

-17.1

to

E21

(digital common)

+9.0

to +9.1 Vdc P8-2 to P8-3 +S.5 to +S.7 Vdc +4.9 to +5.1 Vdc

TRI Secondary

E43 to E47 E43 to E46 E46 to E47 E42 to E44

to

E42

E45 E44 to E4S P8-1

to P8-2

P8-1

to P8-3

Table 5.15.3

AC

18.0 to 18.S

18.0 to 18.5

36.0 to 37.0

7.8 to 8.3

7.8

15.5 to 16.S

7.5 to 7.8

7.S

15.0

Voltages

to

8.3

to

7.8

to IS.6

VAC VAC

VAC VAC VAC

VAC

5-21

Table 5.16 - Main PCB, OsciIIator/Oock Subassembly Performance Test

ARTEKMEDIA => 2012

Input and

Function: DCV Range: Auto Input Terminals: 13

J4

and with a copper jumper

(riiQ.)

Control

Setting

(La) connected

CRYSTAL

(Hi)

Crystal Oscillator Output

Oscillator

Clock

OSCI

Signal

Nomenclature Designation

Output

LLATOR

OUTPUT

Reference

U7-13

U7-10

U8-9

Waveforms for Table 5.16

2

(NO.)

Test Illustration

Point Reference Standard

Fig. 5.7

Performance

NOTE: . ments referenced digital common

All measure-

Waveform No.

•

Fig. 5.7 Waveform

•

Fig. 5.7

Waveform

•

OSCILLATOR

OUTPUT

to

I

No.2

No.3

1.V

(V/OIV)

DC

COUPLED

3

(NO.)

U7-13

j

U8-9

I

j

CLOCK

I

.\

.J

5 jlS

(S/OIV)

OUTPUT

I

J .\

200

kHz

,\1

J

100 kHz

200

'\

\

\ \

kHz

\

,\

U7-10

I

1 1

,

.\ .\ \

2.V

(V/OIV)

DC COUPLED

\

.\

,

'\

\

~

5 jlS

(S/OIV)

\

2.V

.

(V/OIV)

DC COUPLED

5-22

10 jlS

(S/OIV)

;TlO

ARTEKMEDIA => 2012

10

8

R30

88~K

R28

8

8~H!l

8

1+

0

ell>

2200JAf'

IOV

'"

!J

Sill

B

C/7

'nop('

'LSV

ZI

e/~

22.00}Af'

IOV

+

Etj';W1€;><'I'J

®_~24B

~

§

IN'lIAB

is'l

';14LSIOS

I

._?f.

1(){)13V~'

S.IV--ffiiRHJvi

REF:

DIGITAL

COMMON

E1/

E'~

§l

U8

REF: MECCA

EZI

"

£'22

C7

.Ipf

I'n.Y

/DOV

74L7ooIS

TRJ

Figure

5.7

-Main PCB Oscillator/Clock Test Point Locations

5-23

-

ARTEKMEDIA => 2012

Table 5.17 -

Input and Control

Setting

Function: DCV Range: Auto ments are referenced Input Terminals: and

J4

(Lo) connected

with a copper jumper

13 (Hi)

Current Generator

bias voltage

Current Generator R64 bias voltage

Reference voltage

-1 voltage Vdc

Main

PCB, Reference Voltage Generator Subassembly Performance Test

Signal Reference Test

Nomenclature Designation Point

CR14 (Cathode)

Zener

V Reference

Output

VR8 (Cathode)

ARlb

- 14

•

II

Illustration

Reference

Fig. 5.8

Performance

Standard

NOTE:

to

+9.5 to 9.9

+10.1

+6.2 to +6.4 (refer zener tag)

-0.9999

All measure-

TP1 (Mecca)

to

+10.6 Vdc

to

voltage on

to

Vdc

-1.0001

+ I V Reference Input

+ 1 V Reference

+ 1 V Ohms Reference Input

+ I V Ohms Reference

Output

ARlc

ARId

- 10

- 8

- 3

- I

•

Fig. 5.8

l.0005

+

Vdc

+0.9999 to

Vdc

+

l.00

Vdc

+l.0005 to +1.0015

Vdc

to

+ 1.0015

+1.0001

10 to + 1.0025

5-24

REF:

ARTEKMEDIA => 2012

MECCA

;rIO

CI{:'

2200)-1"

.~,.....,.,.,."....-'

/II

Ii

5!,(1Jl.~..-_-==r-_-.J

B

1AI'2.

.

74L"M_I

1

8£53

IOV

iN

5ZA 0

+

S."V

)

+

Figure 5.8 -Main PCB Reference Voltage Generator Test Point Locations

5-25

Table

ARTEKMEDIA => 2012

S.18·

Main PCB, Timing and Control Logic Subassembly Performance Test

Input and

Function: Range: Auto ments are referenced Input Terminals:

J4

and with a copper jumper

Control

Setting Nomenclature

DCV

J3 (Hi)

(Lo) connected

Counter

Counter Output, Qe2

Signal Integrate

--

Reset U9-6

Signal Switch

- Reference Switch

Output

Signal Reference Test

Output,

Output

Qel

Designation

U9·2

U9·1

U9·3

Ul4·2

Ul4·10

Illustration

Point Reference Standard

Fig. 5.9

•

Fig. 5.9 Waveform

Fig. 5.9

Performance

NOTE: .

to

NOTE: Ext. trig. scope at

Waveform

+ Polarity (Display)

Waveform

All measure·

digital common

S7·3

No.4

No.5

No.6

No.7

No.8

No.9

NIO

•

+ Reference Switch

Output

Ul4·12

Fig. 5.9 - Polarity (Display)

Waveform

No.9

•

Reset Switch

Output

Ul44

Fig. 5.9

Waveform No. 10

Check Transfer at Transfer OVin,

HIS

(half scale)

FIS

and

(full scale)

UlO·8

•

Fig. 5.9

Waveform No.

11

5·26

JIOlo

ARTEKMEDIA => 2012

•

•••

o 0 0

$6-2

o 0 0

10

0 0

57-1

57-a

o 0 0

€I

EI5

REF: EXT

SCOPE

TRIGGER

Figure

---\\-----_._--

REF:

DIGITAL

COMMON

••••

5.9·

Main P(;B Timing and Control Logic Test Point Locations

•

5-27

4

ARTEKMEDIA => 2012

(NO.)

Waveforms for Table 5.18

Q

1

e

5

(NO.)

Q

2

e

2.0V

(V/OIV)

DC

COUPLED

6

(NO.)

U9-2

SIGNAL

U9-3

50

MS

(S/OIV)

INTEGRATE

U9-1

2.0V

(V/OIV)

DC

COUPLED

7 RESET

(NO.)

U9-6

50MS

(S/OIV)

I

:

,

I

2.0V 2.0V

.

(V/OIV)

50

MS

DC

COUPLED

8

(NO.)

SIGNAL

SWITCH

(S/OIV)

U14-2

2.0V

CVlDIV)

50

MS

(S/OIV)

5-28

DC

COUPLED

(V/OIV)

DC COUPLED

MINUS REFERENCE SWITCH

9

(NO'>

U14-10

2.0V

(V/OIV)

DC

COUPLED

O'N

l

O'N

HIS FIS

,.-

-~

HIS

50

(S/OIV)

--

50

(S/OIV)

MS

:--

MS

FIS

J

!

I

. I

I

i

I

!

I

i

I

Waveforms

ARTEKMEDIA => 2012

for

Table

5.18

10

(NO'>

2.0V

(V/OIV)

DC

COUPLED

REF:

RESET SWITCH

U14·4

OIN

DIGITAL

COMMON

..

-

--

HIS

--

5QMS

(S/OIV)

I!--

FIS

11

l'NoT

2.0V

(v/OIV)

DC COUPLED REF:

TRANSFER

U10·8

DIGITAL

OIN

COMMON

..

-

HIS

--

50

(S/OIV)

FIS

~-

i

,

MS

5-29

Table 5.19 - Main PCB, Range and Relay Logic Subassembly Performance Test

ARTEKMEDIA => 2012

Input and Control

Setting

Function: Range: .2 manual Input Terminals: and with a copper jumper

Range: .2 Range:

Range: 20. Range: 200.

Range:

Function:

Range: 200.

Range: 20. Range: 2. Range: .2

Function:

Range: 2. Range: Range: 200. Range: 2000. Range:

Function: DCmA

Range: 200. Range: Range: Range: .2

Function:

Range: 2. Range: Range: 200. Range: 2000.

DCY

J4

(Lo) connected

2.

1000.

ACY

Kn

20.

20,000.

20.

2.

ACmA

20.

13 (Hi)

Signal

Nomenclature

ROM

inputs/outputs

ROM inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

ROM

inputs/outputs

Reference

Designati?n Point

US US US US US

US US US US US US

US US US US US

Test

See

paragraph

5.4.13

below.

II

..

II

B

Dlustration

Reference

Fig. 5.10

Performance

Standard

NOTE: All measure-

ments referenced

digital common

Fig.S.lI(A)

Fig.S.1I(B)

Fig.S.1I(C)

Fig.

5.11(0)

Fig.S.ll(E)

to

5-30

5.4.13 The test point 9 specified in table 5.19 refers to ROM

the ure 5.10. For the specific pin to figure S.11. For example when performing the

presented refers to figure level

level

also that every range example to check the

to the

are

logic level 1 (4.1

determine the proper

function and range combination.

input and

in

table 5.19 the performance standard column

"checkerboards" of

each input and

"IN"

checkerboard. In the 2 column all input pins

shown to

output

S.IIA.

be

logic zero

Y dc). Thus

pins on

At the top

are

proVided

output

of

the

ROM

input for the 2 volt range refer

(.1

ROM

state from figure 5.11 for any

ROM

US

be

used for testing refer to

of

figure

to

indicate the logic

of

the

ROM

DC

function

Y dc) except pin

it

is

a simple matter to

shown in

DCY check

S.lIA

shown. For

12

US.

which is

fig-

logic

Note

~lo~lo~

ARTEKMEDIA => 2012

___________

5!i"-Z

o 0 0

000

,0

0 0

o 0 0

57-/

57-3

57-2.

57-4/

o 0 0

B

_____ B __________

B_§_~

_________ B ____________

~~

Figure 5_10 - Range and

Relay

Logic Test Points

5-31

ROM

ARTEKMEDIA => 2012

INPUT

ROM

OUTPUT

0=

0.1 Vdc

• = 4.1 Vdc

Dig.

Com. = Ref

A

Typical

for

all Inputs

AC . CURRENT

Kn·

CURRENT

B

1==;==;=:=::",

Rl

~-+--I--

R2

R4

I---+--+--+--

~9==F==F==F==F=~~

j-=-.:4-::....j---+--I---+-+---I

--+----.,1---1

--+-----1

_ = .085 to .145

D = 5.26 to 5.3

Typical for all Base

of

U4·11 (LOAD)

K3

K4

K5

K6/K7

UPLIMIT

K2

Outputs

Q 1 (K 1)

C

D

E

5-32

Figure 5.11 -Range

Relay

Logic Level Performance Standard

(a)

ARTEKMEDIA => 2012

DC

.2

Xl

Divider

Range

Current

Source

+10

..;.100

..;.1000

rnA

1

rnA

1

Current

Shunt

Resistor

AC

Conv

ATTN

Relays

K1

2

K2

K3

K4

K5

K6

K7

ISO

X10

Gain

(b)

(c)

(d)

(e)

Kn

AC

DC rnA

AC

rnA

20

200

2K

20K

.2

2

20

200

1K

.2

2

20

200

2K .2

2

20

200

2K

100,uA

1O,uA

l,uA

100

nA

909n

90.9n

9.09n .909n

.In

909n

90.9n

9.09n .909n

.In

..;.lOOKl ..;.100

Kl

+1000

K2

D

= OFF

=

ON

Figure 5.12 -Range

Relay

Status Chart

5-33

Table 5.20 • Main PCB, Null Detector Subassembly Performance Test

ARTEKMEDIA => 2012

Input and

Function: DCV Range: Auto Input Terminals:

J4

and to a

+.1

J3 (Hi) and

connected to a source

Control Signal

Setting

J3 (Hi)

(Lo) connected Scope Ext. trig. at

Vdc source S7·3 (N/O)

J4

(Lo)

-.1

Vdc

Nomenclature

Null detector input

Null detector

Null detector input

Null detector

output

Reference Test

Designation

CRI5

(Cathode)

R79

CRI5

(Cathode)

R79

Dlustration

Point Reference

Fig.5.ll

•

Fig. 5.11

•

Fig. 5.11 Waveform No.

•

Fig. 5.11

NOTE: ·All measure· ments are referenced

. to

Waveform No. 12

Waveform No.

•

Performance

Standard

TPI

(Mecca).

13

14

15

5·34

Waveforms for Table 5.20

ARTEKMEDIA => 2012

12

(NO.)

0.2V

(V/oIV)

NULL

CR15

'-

DC COUPLED REF:

14

MECCA

NULL

CR15

DETECTOR

(CATHODE)

V

DETECTOR

(CATHODE)

IN (PLUS

50

MS

(S/oIV)

IN

(MINUS

SIGNAL)

'-

SIGNAL)

13

(NO.)

2.0V

(V/oIV)

DC

COUPLED

REF:

15

(NO.)

NULL

R79

MECCA

NULL

R79

DETECTOR

50

DETECTOR

OUTPUT

.

,

I

MS

(S/oIV)

OUTPUT

/

0.2V

(V/oIV)

DC COUPLED REF:

MECCA

~

50

MS

(S/oIV)

/

2.0V

(VIOl

V)

DC COUPLED REF:

MECCA

50

(S/oIV)

MS

1

I

!

! I

,

!

J

, j

I

.

I

j

J

I

i

1

!

J

I

5-35/5-36 Blank

THIS

ARTEKMEDIA => 2012

PAGE

LEFT

BLANK

SCANS

By

ArtekMedia

•

ARTEKMEDIA => 2012

•

;no

0

~--------------------------------------------------~~

1',30 8891<

R28

o 0 0

5(,-2

000

10

0 0

57-1

57-2.

o 0 0

€I

E/5

CI'"

2200jlf'

IOV

+

REF:

EXT

SCOPE

TRIGGER

Figure

5_13

-Main PCB Null Detector Test Points

REF:

MECCA

5-37

Table

ARTEKMEDIA => 2012

S.21

- Main PCB, Integrator Subassembly Performance Test

Input and Control

I

Function: DCV Range: Auto Input Terminals: and to a +.1

Connect J3 and

-.1

Setting

J4

(Lo) connected

Vdc source

J3 (Hi)

J4

to

Nomenclature

Integrator non-inverting

Integrator Op Amp inverting

Integrator Op

output

a

Integrator output

Signal

Op Amp

input

Amp

Op

Amp

Reference

Designation

R77

R76

C7

Test

Point

III

II

•

Illustration

Reference

Fig. 5.14

Performance

Standard

TP1

to

(Mecca).

All measure-

+2.7 Vdc

t2.7

Vdc

No.

17

NOTE: . ments are referenced to Scope Ext. trig. at S7-3 (N/O) +2.5

+2.5

Waveform No. 16

Waveform

16

(NO.)

5.0V

(V/OIV)

EXT

DC

COUPLED

REF: MECCA

INTEGRATOR

C7

""""""

TRIG:

57-3 (N/O)

........

/

~

OUT

50

(S/OIV)

M5

Waveforms for Table

""'

I"-.

5.0V

(V/OIV)

EXT DC

REF: MECCA

S.21

~

TRIG:

COUPLED

57-3 (N/O)

~

r-.....

~

50 M5

(S/OIV)

L:

V

5-38

iTlO

ARTEKMEDIA => 2012

0

i1!I

R30

889K

i1!I

i1!Ii1!I!!J

m+

i1!I

+

C

15""

2200}<'f'

IOV

+

V.

,0

0 0

57-/

57-2.

o 0 0

REF:

EXT

SCOPE

TRIGGER

Figure 5.14 -Main PCB Integrator Test Points

REF: MECCA

1m

5-39

Table 5.22 -Main PCB, Isolator/Bootstrap Subassembly Performance Test

ARTEKMEDIA => 2012

Setting

(1..0)

Control

DCV

J3 (Hi)

connected

Input and

Function: Range: Auto Input Terminals:

J4

and with a copper jumper

Signal

Nomenclature

Isolator input R44

Isolator emitter bias R55

Isolator op amp noninverting input

Isolator op amp inverting input

Isolator output

Bootstrap amp output

+ Bootstrap voltage VR2 (cathode)

- Bootstrap voltage VR3 (anode)

op

amp

Reference

Designation

ARIa

- 5

ARIa

-6

ARIa

-7

VR2 (anode)

Test

Point

..

II

III

..

II

•

II

Dlustration

Reference

Fig. 5.15

Performance

Standard

All

NOTE: ments are referenced

to

TPI (Mecca)

+0.0001 Vdc

-0.43

+3.75

+3.75 to +3.85 Vdc

+0.00003 to

-0.00003

+0.004 Vdc

+4.90 to +5.10 Vdc

-4.90

measure-

to

-0.0001

to

-0.45

to

+3.85 Vdc

Vdc

to

-0.004

to

-5.10

Vdc

Range: .2

Range:

Connect J3 and J 4 to a

+ I Vdc source

2.

Isolator control voltage (on) U15b - 5

Isolator XI switch control voltage (off)

Isolator XIO switch control voltage (off) U15b - 5

Isolator XI switch control voltage (on)

Isolator input R44

Isolator op amp output

+ Bootstrap voltage VR2 (cathode)

Bootstrap amp

XIO switch

output

VISa -

U15a -

ARIa

VR2 (anode)

13

-7

II

•

II

•

..

II

•

Fig. 5.15

Fig. 5.15 +4.7 to +4.8 Vdc

Fig. 5.15

Fig. 5.15 +5.870 to +5.880

Fig. 5.15 + 1.0030

+4.7 to +4.8 Vdc

-5.04

to

-5.08

-5.04

to

-5.08

+0.9999 to +1.0001 Vdc

+1.0190 to +1.0210 Vdc

Vdc

to

+ 1.0040

Vdc

5-40

Isolator output

el7

II

Fig. 5.15

+0.9999 to +1.0001 Vdc

Table 5.22 continued

ARTEKMEDIA => 2012

Input and Control Signal

Setting Nomenclature Designation Point Reference Standard

Connect

-0.1 range to .2

J3

and

J4

to a Isolator input R44

Vdc source, Vdc

Isolator op amp

output

- Bootstrap voltage

Bootstrap amp output

Isolator output e17

Reference

ARIa

-7

VR3 (anode)

VR2 (anode)

Test

II

•

II

Illustration Performance

Fig. 5.15

Fig. 5.15 --4.99 to

Fig.5.15

Fig. 5.15

•

-0.0999

-1.0190

Vdc

-0.0950

Vdc

-0.9998

Vdc

to -0.1001

to

-1.0210

-5.2

Vdc

to

-0.0970

to

-1.0002

5-41/5-42 Blank

THIS

ARTEKMEDIA => 2012

PAGE

LEFT

BLANK

SCANS

By

ArtekMedia

II

ARTEKMEDIA => 2012

REF:

MECCA

J~~O~

________

~

______________

~§§

~

____________

t-~

CI"

22oo/-,f'

IOV

+

, .

,0

0 0

57-1

57-2.

o 0 0

• 1111

II

•••

Figure 5.15 -Main PCB Isolator/Bootstrap Test Points

II

••

5-43

Table 5.23 -

ARTEKMEDIA => 2012

Main

PCB, KOhms Amplifier Subassembly Performance Test

Input and

Function: Kohms Range: Auto Input Terminals: and

14

with a copper jumper

Setting

(1.0)

Control

J3 (Hi)

connected

Signal

Nomenclature

Ohms

op

amp non-

inverting input R85

Ohms

op

amp

inverting input R86

Ohms

op

amp output R89

Ohms protection bias

R89 (Q9 emitter)

VR9 (anode)

CR21 (cathode)

Reference Test

Designation Point

•

II

•

Illustration Performance

Reference Standard

NOTE: . All measure-

ments are referenced to

TPI (Mecca)

+8.175 to +8.185

Fig. 5.16

Fig. 5.16 Vdc

Fig. 5.16

Vdc

+8.175 to +8.185

-3.730

Vdc

-2.560 Vdc

-1.940 Vdc

-0.550 Vdc

to

-3.740

to

-2.580

to

-1.960

to

-0.570

Remove jumper from

J3 and 14, set range to

.2 - manual

Ohms

output

drive

Ohms reference voltage R36

Ohms

op

amp non-

inverting input R85

Ohms

opamp

inverting input

Ohms

op

amp

output

Ohms protection bias

Ohms output drive

CR21 (anode)

R86

R89

R89 (Q9 emitter)

VR9 (anode)

CR21 (cathode)

CR21 (anode)

•

II

•

II

•

Fig. 5.16

Fig. 5.16 Vdc

Fig. 5.16

+0.0001 to Vdc

+

1.0005 to + 1.0020

+2.69

+13.38 Vdc

-12.83 Vdc

-5.97

-5.15

-5.95

-5.46

-0.0001

to

+2.71 Vdc

to

+13.41

to

-12.85

to

-6.00

to

-5.25

to

-6.00

to

-5.48

Vdc

5-44

JIOlo

ARTEKMEDIA => 2012

S5'-2

o 0 0

000

8

I!HH!

8

1+

0

elI>

2200jAf'

IOV

C7

.IJ-If

I'«.Y

/DOV

'"

/J

SIn.

Q.

CI7

qWP'

25'V

LZI

74LS05

E~

';lolLS/OS

ella

22.00jAf'

IOV

lN75ZA 0

+

5./oV

~;1

M:~:5

E~8

G,I\'

®

~2~8

@ §

I

i~~3V-uk~zt-

5.1~7S'1

IK~

/(')(

IK -

+

-]

@-_

--4f-7>

cift

7

,0

0 0

S7-1

57'2-

o 0 0

••••

1111.

Figure 5.16 -Main PCB

REF:

KOhm

MECCA

Amplifier Test Points

5-45

Table 5.24 • Display Subassembly Performance Test

ARTEKMEDIA => 2012

Input and

Function: DCV NOTE: All measure· Range: Manual .2 Input Terminals: 13 (Hi) and

J 4 (Lo) connected

with a copper jumper

Set function

- open input terminals

Control Signal

Setting Nomenclature

+5V

-12V

Clock U2·1

Qe1

Qe2

to

Kohms

Qe2L(0/L)

+ 100 (step)

Reference

Designati?n

U2·24

U2·15

U2·1S

U2·16

U2·9

U2·I1/20/E9

Test

Point

•

Illustration

Reference

Fig. 5.17

Fig. 5.15 Waveform

Fig. 5.15 low until overrange

Fig. 5.15 Waveform

Performance

Standard

ments are referenced to

digital common scope ext. trig. at S7·3 (N/O)

+4.95

to

+5.05 Vdc

-11.95

to

Waveform

-12.05

No.1

No.2

No.3

No.4

Vdc

Change + & - polarity

input

to

display

+2K

Transfer

OA

OB

Oc

00

OE

Q1

Q2

Q4

Qs

Pol E4

+

U2·19

U2·2

U2·S

U2·7

U2·17

U2·22/E14

U2·21

U24/E5

U2·5/E6

U2-6/E7

U2·10/ES

•

II

Waveform

50 Waveform

Waveform

Waveform No.

Waveform No. 12

Waveform No.

Waveform No. 14

Waveform No.

Hi

= +4.5Vdc = + Pol

Lo =

No.5

Hz ± 5 Hz

No.6

No.7

No.8

No.9

II

13

IS

+0.25Vdc=-Pol

10

Manually change ranges in the Kohms function (Range 0

5·46

to

5)

Rl

R2

R4

(See range

E3

and relay

E2

performance· Check)

E1

•

High

for range

200, & 20,000

2,

High

for range

20

& 200

High for range

2000 & 20,000

Table

ARTEKMEDIA => 2012

5.24 continued

Input and Control

Setting

Signal

Nomenclature

LED 5

Strobe

LED 4

Strobe

LED 3 Strobe LED 2 Strobe

LED 1 Strobe

Reference Test

DesiW1ati~n

Q 1 collector

Q2 collector

Q3 collector

Q4

collector

Q5 collector

Illustration

Point Reference

Fig. 5.15

•

Performance

Standard

Waveform No. 17

Waveform No. 18

Waveform No. 19

Waveform No.

20

21

NOTE

To derive counter content connect oscilloscope probe

TP12 and record the HI/LO logic levels

to

in Waveform 12. Then connect the oscilloscope probe

to test points content shown for each point. Add the values shown within waveform grid content

13

of

the counter.

through

15

and record the HI/LO

16

and the total

as

shown

as

is

the

5-47

1

ARTEKMEDIA => 2012

(NO.)

Waveforms

CLOCK 2

for Table S .24

(NO.)

Q

l

e

I

U2-1

,.

~

~ ~

\.

2.0V 2.0V

(V/DIV)

3

(NO'>

Q

e

U2-16

'Il..

10

(S/DIV)

2

~

r-

\.. \.. \.. \..

J.LSEC

,.

,..

....

".

'h.

(V/DIV)

4

(NO.!

U2-18

.;-

100 (STEP)

U2-11/20

or

50 MSEC

(S/DIV)

E9

,

-

I

2.0V

(V/DIV)

5

(NO'>

2.0V

(v/DIV)

.;-

2K

U2-19

- -

50 MSEC

(S/DIV)

~

-

2.0V

(V/DIV)

6

(NO.)

2.0V

(V/DIV)

I

TRANSFER

U2-2

OIN

--

1 MSEC

(S/DIV)

HIS F/S

--

. i

I

i

I

5-48

10 MSEC

(S/DIV) (S/DIV)

50

MSEC

i

Waveforms for Table 5.24 continued

ARTEKMEDIA => 2012

7

(NO.)

2.0V

(V/OIV)

9

(NO.)

OA

U2-8

-

Oc

U2-17

~

1 MSEC

(S/OIV)

8

(NO.)

2.0V

(V/OIV)

10

(NO.)

OB

U2-7

r--

OD

U2-22

or

E14

r--

1 MSEC

(S/DIV)

i

I

r---

2.0V

(V/OIV) (V/OIV)

r--

~

1 MSEC

(S/OIV)

11

:

(NO.)

OE

U2-21

~

- -

2.0V

EXAMPLE:

12

(NO.)

LSD

TO--j1

MSD

DIGITAL

Q1

(DECIMAL

I 0 I 0 I 0 I 1

r---

1 MSEC

(S/OIV)

DISPLAY

WEIGHT

.18229 KOHMS

OF

1)

t-

SI

NG

LE

r---

I

i

U2-4/E5

SCAN

r---

,

2.0V

Iv/DIV)

1 MSEC

(S/OIV)

2.0V

(V/OIV)

1 MSEC

(S/OIV)

5-49

i

I

Waveforms

ARTEKMEDIA => 2012

for Table 5.24 continued

EXAMPLE:

13

(NO.)

L~s601

2.0V

(V/DIV)

EXAMPLE:

15

(NO.)

LSD

T0"11

MSD

DIGITAL

Q2

(DECIMAL

0

11

DIGITAL

Q8 (DECIMAL WEIGHT OF

I 0 1 0 11 I 0

~

DISPLAY .18229 KOHMS

WEIGHT

OF

2)

U2-5/E6

j 1 I 0 lor-SINGLE SCAN

1

MSEC

(S/DIV)

DISPLAY .18229 KOHMS

8)

U2-10/E8

~

~SINGLE

,....-

SCAN

~

EXAMPLE:

14 .

""i'N'OT

LSD

MSD

2.0V

(V/DIV)

16

(NO.)

LSD

MSD

Q4

TO..,

DIGITAL

TO

.,

Q1

DIGITAL

(DECIMAL

0 I 0 I 0 I 0

SUM

1

0 0 0

DISPLAY .18229 KOHMS

OF

DISPLAY .18229 KOHMS

WEIGHT

lOr-

1

MSEC

(S/DIV)

12 TO

15

r-

1

SI

OF

NG

4)

U2-6/E7

LE

SCAN

LE

SCAN I

!

I

!

I

2.0V

(V/DIV)

17

(NO.)

2.0V

IV/DIV)

1

(S/DIV)

Q1

(COLLECTOR) LED 5

,......

I'-

'"

MSEC

to--

STRO~E

r\.

'"

Q2 0

Q4 Q8

TOTAL

18

(NO.)

2.0V

IV/DIV)

1 1

0

0 0

1

Q2

(COLLECTOR) LED 4 STROBE

.--

10-

I'..

0 0

0

0 0

1

0

(S/DIV)

1M

~

'"

" I

"i-

!

I

I !

,

.-<

J

I

,

i

I

-1

I

\

I

,

!

1

I

!

I

!

I

5-50

1

MSEC

IS/DIV)

1

MSEC

(S/DIV)

i

I

Waveforms

ARTEKMEDIA => 2012

for Table 5.24 continued

19

(NO.)

2.0V

(V/OIV)

21

(NO'>

03

(COLLECTOR) LED 3 STROBE

-

1 MSEC

(S/OIV)

05

(COLLECTOR) LED 1 STROBE

-

'-

20

(NO.)

2.0V

(V/OIV)

04

(COLLECTOR) LED 2 STROBE

1 MSEC

(S/OIV)

-

2.0V

(V/OIV)

~

1

MSEC

(S/OIV)

-

5-51

Figure

ARTEKMEDIA => 2012

5.17

-Display Subassembly Test Points

Ell.

• El0

•

410704-J

• •

E12

5-52

Table 5.25 •

ARTEKMEDIA => 2012

AC

Converter Subassembly Performance Test

Input and

Function: Range: Auto Input Terminals:

J4

and

with a copper jumper

Connect 13 (Hi) and

(10)

to a 1

1 kHz source (2. range) +

Control

Setting

ACV

(10)

are connected

RMS

J3

(Hi)

J4

ACV@

-

Signal

Nomenclature

Op amp non-

inverting input

amp inverting

Op input

Op

amp

output

+

Output

-

Output

Driver

Op amp

output

driver bias R13/15 junction

driver bias R16/17 junction

output

driver signal R13/15 junction Fig. 5.18

Reference

Designation

Rll

R12

R15/16 junction

C15 (minus)

R15/16 junction

Test

Point

•

lllustration

Reference

Fig. 5.18

Performance

Standard

NOTE: All measure· ments are referenced to TP1 (Mecca)

+1.59

to

+L61 Vdc

-0.03

-13.6

-0.95

No.1

No.2

Vdc

+1.59 to +1.61

-0.02

to

+13.4 to +13.6

-13.4

to

-0.85

to

Waveform

-

output

Driver

+ Rectified

- Rectified

AC

driver signal R16/17 junction

output

Converter

output

C15 (minus)

CR5 (cathode)

CR6 (anode)

C17

•

Fig. 5.18

Waveform

-0.9999

Vdc

No.3

No.4

No.5

No.6

to

-1.0001

5-53

Waveforms

ARTEKMEDIA => 2012

for

Table

5.25

OP

AMP

OUTPUT

R

15/R

16

JUNCTION

/

'"""

I

1.0V

(V/OIV)

AC COUPLED

~--------------------------------~-----------------------------------i

3

NEGATIVE

\

"\

~

OUTPUT

/

V

200

(S/OIV)

;"\

/

l

J,LSEC

DRIVE

~,

'\

V

~

1

100MV

(V/DIV)

AC

4

(NO,)

POSITIVE

R13/R15

I

V

COUPLED

DRIVER

1"\

OUTPUT

JUNCTION

I\,

'\ J

y

~

200

OUTPUT

DRIVE

V.

J,LSEC

(S/OIV)

I

~

\

'\

V

~

I

C15

R16/R17

JUNCTION

(MINUS

SIDE)

I

100

MV

(V/OIV)

AC

COUPLED

5

2.0V

(V/DIV)

~

/

I

POSITIVE

CR5

I

1

(CATHODE)

1\

"""

\,

\

RECTIFIED

'-

V

200

(S/OIV)

J

J,LSEC

~

/

V

OUTPUT

~

L

~

i\

'\

l

'-

/

I

2.0V

(V/DIV)

AC

COUPLED

6

('NO,)

2.0V

(V/OIV)

I

V

NEGATIVE

CR6

1\

"

\.

(ANODE)

\

,

I

/

"

200

(S/OIV)

RECTIFIED

\

'-

I

/

I

~

J,LSEC

OUTPUT

~

l\

\.

'\

\

,

VI

V

II

I

DC COUPLED

5-54

200

(S/OIV)

J,LSEC

DC COUPLED

200

(S/OIV)

J,LSEC

10--'

ARTEKMEDIA => 2012

\ I

.......

o

RI

1M

oS'"

'oO

K2

Figure 5.18 -A C Converter Subassembly Test Points

5-55

Table 5.26 -Data

ARTEKMEDIA => 2012

Output

(Opt. 51) Subassembly Performance Test

Input and

Function: Range: Manual (.2) Input Terminals:

and

J4

with a copper jumper

Check

Display

r----.

Setting

(10)

that

El E2 E3 E9 E4

E7 E6

E14

E8

E5

Control

DCV

connected

all connections

PCB

J3 (Hi)

"E"

to

Term

Signal

Nomenclature

the

Data

Output

Main

PCB

E22

E15 E16 E20 E19 E21

PCB

Reference

Designation

are made

as

shown below.

Color

BLU GRN YEL

ORG 7

RED BRN BLK WIIT GRY VIO BLU GRN 3 YEL ORG

RED BRN

Test

Point

J1-Pin

9

8

10

11

6

12

5

13 OD

4

14

15

2

16

1 DIG.

Transfer R4 R2 Rl

.;.

+ Pol D4 D2

D8 Dl Kohms ACV

I +5V

lllustration

Reference

Name

100 (MUX CLK)

(lK

MUXDR)

(CURRENT)

DC COM.

Performance

Standard

Connect P8 on Main

Check following voltage levels, referenced

Change reference

5-56

PCB

to J8 on Data

Rectified voltage CR1/CR2 (cathode)

Zener

voltage VR3 (cathode)

Isolated regulator voltage Q3 (emitter)

to

Digital Common

MUXClock U2

OD

(lK

Transfer

Data Transfer

Data Strobe

Output

MUX DR)

to

PCB

(isolated supply)

"-"

of

C6

C3

Cl

U3

OCI - 5 pin 1

pin 1

pin 6

•

B

•

+7.9

to

Fig. 5.20

Fig. 5.20 Waveform

Fig. 5.20

+5.5

+4.9

+8.2 Vdc

to

+5.7 Vdc

to

+5.1 Vdc

Waveform

No.1

No.2

No.3

No.4

No.5

Table 5.26 continued

ARTEKMEDIA => 2012

Input and

Change reference

Check the function code

,.--

Control

Setting

+DCV

-DCV ACV +DCI

-DCI ACI

KSl

to

(isolated)

Signal

Nomenclature Designation

BCD

Common, 1202 pin 2, and check:

Serial data strobe

Inhibit parallel data

Serial data strobe

Parallel data valid

as

shown below.

FI

0 0 0 0

1 0 0

1 1 0 0 3

0

1 0 1 0 5 1 1 1 1

18

F2

0

0 0 1 9 V

F4

10 L

1202

Reference

U7·5/1202-C

U7·13/1202·F

U7·I2/1202·E

U7-4/J202·D

Fg Wght

0 I

1 0 4

0

Test

Point

•

0

7

Illustration Performance

Reference Standard

Fig. 5.20

PCB

locations are:

-

Fi

- U11·4

F2

-

F4

-

F8

UlO-4

Ul2-4 Ul3-4

Waveform

No.6

No.7

No.8

No.9

Check the range code

.2 2 1 0 0 20 0 I 0 2 200 2000 0 0 20,000

as

shown below.

Range Code

Rl

0 0 0 0

1 1

1

19

R2

0

W

R4

0

1 4 1

11

1202

Wght

1

3

5

PCB

locations are:

- UlO·3

Rl

-

R2

-

R4

Ull·3 U12·3

5·57

Table 5,26 continued

ARTEKMEDIA => 2012

Input and

Check the decade numerical code

Check

Check Check the serial 4 output Check the serial 8 output

Control

Setting

Units

1

1202·22

2 1202·Z

1202·14

4

1202·8

8

the serial 1 output at 1202·S or

Signal

Nomen

cia

ture

as

shown below.

Tens Hundreds

10

20 40 80

1202·20 1202·Y 1202·13 1202·P

U1

0-1

(Ext. trig. @

100 200 1202·X 400 800

the serial 2 output at 1202·15 or Ul}·1 (Ext. trig. @ U 11·8)

at

1202·8 or UI2·} (Ext. trig. @

at

1202·J or U13·} (Ext. trig. @ U13·8)

Reference

Designation

Test

Point

Thousands

1202·21

lK

2K

J202·12

4K

J202·N 8K 1202·K

Ul

0·8)

as

Ul2·8)

shown in figure 5.19

I

Illustration

Reference

10 Thousands

.1202·} 6

10K 1202·T 20K 1202·9

Performance

Standard

J202·17 1202·U

•

5·58

Dana 4600-OSM User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

ArtekMedia

www.artekmedia.com

TABLE OF CONTENTS

GENERAL DESCRIPTION

MOUNTING

POWER

OUTPUT

MAINTENANCE

Null detector

INTEGRATOR

display