LeCroy 9450 User manual

9450 DIGITAL OSCILLOSCOPE

SERVICE MANUAL

North American Headquarters:

LeCROY Corporation

700 Chestnut Ridge Road

Chestnut Ridge, NY 10977-6499

U.S.A.

Tel: (914) 578-6097

European Headquarters:

LeCROY S.A.

P.0. Box 341

2, rue du Pre-de-la-Fontaine

1217 Meyrin 1 / Geneva

Switzerland

Tel: (022) 719.21.11

Version 0.5

October 1990

ACKNOWLEDGEMENTS

We would like to thank Texas Instruments, Motorola and Signal

Processing Technologies (Honeywell) for their kind permission in

allowing us to reproduce drawings from their technical literature.

INDEX

Specifications

Basic Operation and Block Diagrams

Basic Performance Test Procedure

and

Internal Diagnostics and Calibration

Service Information and Procedures

Mechanical Drawings

Circuit Diagrams

Parts List

SPECIFICATIONS

BASIC OPERATION

AND

BLOCK DIAGRAMS

9450 SUB-ASSEMBLIES

9450-1 Base Board

9450-2 Display

-3A ADC

-4 Time base

-5 Front panel

-6 Processor (compatible with 9420-6)

-7 Front-end

-8 Clock bus

9451-1 Power supply

DECODER

PBL.

PERIPH. 9450-1 CU5T PORT CONTROL

DECODER

PRL

CUSTOMER PORT

-BO BD >»•-

CONTROL

PRL

01 SPLAT

STNC

3ER NO.

PRL

9450-11 B450-3P

_1B I.

13 22 1

.MIA

12 M2A .

PROCESSOR DISPLAY

HCL494

SAMPLE tHOLD

PROCESSOR

5AD

3'EN

9450-7

FRONT ENO HUU

1.5sac if

POWER ON •!

PRESS 15«qc i

LIKE POHER ON

TIL BEEP »

ERRSE NON-VOLATILE RRH

POHER SUPPLY

RS 232 PORT

8REAO

OVL

FROM 9450-6

5Rfl 3_3SRA

SDFE ^

WRITE SDFE

SHFE SERIAL SHFE

TRFE CONTROL fTRFE

94S0-7

FRONT ENO

MTia. 1111 MUM It Ml MU IWCtfT «UDMT CMP

IT CMTtIM ptsmilTMT HFMM1IM Ml ll IUMIIMI

It! T* IMUSTMIIM Ml II 11 IIT ID KUKO, 011-

ara m*mb» umi urn iinait me irmc

CORPORATION

3CHCIMTIC DIOBIUm

9450-1

DWG NOt 9CHEHH-6LOC

KflOUJMKI-l

:«KO

HAUSRHNRMN'R

MV R^CULfpON MILL IE TUANEB..OFF If I

-t*i5VI-l-i5V. DAOP Hone THAN BV OH *5V 0H0P5 HOAE THAN IV

-CAiHOQL VuLTACE OAOPS MORE THAN IB VFDA HOAE THHN 2SB US

BUT NOT AT AESET

‘bh (2) ‘br m.5i

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