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: [phone]
European Headquarters:
LeCROY S.A.
P.0. Box 341
2, rue du Pre-de-la-Fontaine
1217 Meyrin 1 / Geneva
Switzerland
Tel: [phone]
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
36
-BO BD >»•-
CONTROL
PRL
01 SPLAT
STNC
3ER NO.
PRL
9450-11 B450-3P
_1B I.
13 22 1
.MIA
12 M2A .
12
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
f
:«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