HP 1650b, 1651b schematic
SERVICE MANUAL
HP 1650B/1651B
Logic Analyzer
SERIAL NUMBERS
This manual applies directly to instruments
For additional information about serial numbers see
INSTRUMENTS COVERED BY THIS MANUAL
ã
COPYRIGHT HEWLETT-PACKARD COMPANY/COLORADO DIVISION 1989
1900 GARDEN OF THE GODS ROAD, COLORADO SPRINGS, COLORADO U.S.A.
prefixed with serial number:
2924A
in Section 1.
ALL RIGHTS RESERVED
Manual Part No. 01650-90915
Microfiche Part No. 01650-90815
Printed in U.S.A. August 1989
Herstellerbescheinigung
Hiermit wird bescheinigt, dab das Gerät/System in Ü bereinstimmung mit den
Bestimmungen von Postverfügung 1046/84 funkentstört ist.
Der Deutschen Bundespost wurde das Inverkehrbringen dieses Gerätes/Systems
angezeigt und die Berechtigung zur Überprüfung der Serie auf Einhaltung der
Bestimmungen eingeräumt.
b
Zusatzinformation für Me
b
Werden Me
b
aufbauten verwendet, so ist vom Betreiber sicherzustellen, dab die
Me
Funkentstörbestimmungen unter Betriebsbedingungen an seiner
Grundstücksgrenze eingehalten werden.
- und Testgeräte mit ungeschirmten Kabeln und/oder in offenen
- und Testgeräte
Manufacturer’s declaration
This is to certify that this product meets the radio frequency interference
requirements of directive 1046/84. The G erman Bundespost has been notified that
this equipment was put into circulation and was granted the right to check the
product type for compliance with these requirements.
Additional Information for Test and Measurement Equipment
Note: If test and measurement equipment is operated with unshielded cables
and/or used for measurements on open set-ups, the user must insure that under
these operating conditions, the radio frequency interference limits are met at the
border of his premises.
ii
CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to
the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s
calibration facility, and to the calibration facilities of other International Standards Organization members.
WARRANTY
This Hewlett-Packard product is warranted against defects in material and workmanship for a period of
one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its option,
either repair or replace products which prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by HP. Buyer
shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer.
However, Buyer shall pay all shipping charges, duties, and taxes for products returned to HP from another
country.
HP warrants that its software and firmware designated by HP for use with an instrument will execute its
programming instructions when properly installed on that instrument. HP does not warrant that the
operation of the instrument or software, or firmware will be uninterrupted or error free.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by
Buyer, buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside the
environmental specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT
BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
ASSISTANCE
Product maintenance agreements and other customer assistance agreements are available for
Hewlett-Packard products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses are
provided at the back of this manual.
CWA789
iii
Safety Considerations
General
Operation
General
Warnings and
Cautions
This is a Safety Class I instrument (provided with terminal for protective earthing). BEFO RE
APPLYING POWER verify that the power transformer primary is matched to the available line
voltage, the correct fuse is installed, and Safety Precautions are taken (see the following warnings).
In addition, note the instrument’s external markings which are described under "Safety Symbols."
·
BEFORE SWITCH ING ON T HE INSTRUMENT, the protective earth terminal of the
instrument must be connected to the protective conductor of the (mains) powercord. The mains
plug shall only be inserted in a socket outlet provided with a protective earth contact. The
protective action must not be negated by the use of an extension cord (power cable) without a
protective conductor (grounding). Grounding one conductor of a two-conductor outlet is not
sufficient protection.
·
Servicing instructions are for use by service-trained personnel. To avoid dangerous electric shock,
do not perform any servicing unless qualified to do so.
·
If this instrument is to be energized via an auto-transformer (for voltage reduction) make sure
the common terminal is connected to the earth terminal of the power source.
·
Any interruption of the protective (grounding) conductor (inside or outside the instrument) or
disconnecting the protective earth terminal will cause a potential shock hazard that could result in
personal injur y.
·
Whenever it is likely that the protection has been impaired, the instrument must be made
inoperative and be secured against any unintended operation.
·
Only fuses with the required rated current, voltage, and specified type (normal blow, time delay,
etc.) should be used. Do not use repaired fuses or short circuited fuseholders. To do so could
cause a shock or fire hazard.
·
Do not operate the instrument in the presence of flammable gasses or fumes. Operation of any
electrical instrument in such an environment constitutes a definite safety hazard.
·
Do not install substitute parts or perform any unauthorized modification to the instrument.
·
Adjustments described in the manual are performed with power supplied to the instrument while
protective covers are removed. Energy available at many points may, if contacted, result in
personal injur y.
·
Any adjustment, maintenance, and repair of the opened instrument under voltage should be
avoided as much as possible, and when inevitable, should be carried out only by a skilled person
who is aware of the hazard involved.
·
Capacitors inside the instrument may still be charged even if the instrument has been
disconnected from its source of supply.
Warning
iv
Caution
Safety Symbols
Instruction manual symbol. The product will be marked with this symbol when it is necessary for the
user to refer to the instruction manual in order to protect against damage to the product.
Indicates Hazardous Voltages
Earth terminal (sometimes used in manual to indicate circuit common connected to grounded chassis).
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if
not correctly performed or adhered to, could result in personal injury. D o not proceed beyond a
WARNING sign until the indicated conditions are fully understood and met.
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, practice, or the
like, which, if not correctly performed or adhered to, could result in damage to or destruction of part
or all of the product. Do not proceed beyond a CAUTION sign until the indicated conditions are fully
understood or met.
Printing History
New editions are complete revisions of the manual. Update packages, which are
issued between editions, contain additional and replacement pages to be merged
into the manual by the customer. The dates on the title page change only when a
new edition is published.
A software and/or firmware code may be printed before the date; this indicates the
version level of the software and/or firmware of this product at the time of the
manual or update was issued. Many product updates and fixes do not require
manual changes and, conversely, manual corrections may be done without
accompanying product changes. Therefore, do not expect a one to one
correspondence between product updates and manual updates.
Edition 1 August 1989 01650-90915
v
List of Effective Pages
The List of Effective Pages gives the date of the current edition and of any pages
changed in updates to that edition. Within the manual, any page changed since the
last edition is indicated by printing the date the changes were made on the bottom
of the page. If an update is incorporated when a new edition of the manual is
printed, the change dates are removed from the bottom of the pages and the new
edition date is listed in Printing History and on the title page.
Pages Effective Date
all . . . . . . . . . . . . . . . . . August 1989
vi
Contents
Section 1: General Information
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Instruments Covered by this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Accessories Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Logic Analyzer Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
State Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Timing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Measurement Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
State Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Timing Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Measurement and Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
General Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Section 2: Installation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Initial Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Line Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Operating Disk Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
HP-IB Interfacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
HP-IB Address Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
RS-232-C Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
RS-232-C Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Operating Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Storage and Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Tagging for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Original Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Other Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Cleaning Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
HP 1650B/1651B Contents - 1
Service Manual
Section 3: Performance Tests
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Test Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Power-up Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Selectable Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Performance Test Interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Clock, Qualifier, and Data Inputs Test 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Clock, Qualifier, and Data Inputs Test 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Clock, Qualifier, and D ata Inputs Test 3 (HP 1650B Only) . . . . . . . . . . . . . . . . . 3-13
Clock, Qualifier, and Data Inputs Test 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Clock, Qualifier, and Data Inputs Test 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Clock, Qualifier, and Data Inputs Test 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Glitch Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Threshold Accuracy Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Section 4: Adjustments
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Calibration Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Instrument Warmup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Power Supply Assembly Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
CRT Monitor Assembly Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Intensity, Sub-bright, and Contrast Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Focus Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Horizontal Phase, Vertical Linearity, and Height Adjustments . . . . . . . . . . . . 4-6
System Board Assembly Threshold Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Section 5: Replaceable Parts
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Exchange Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Direct Mail Order System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Contents - 2 HP 1650B/1651B
Service Manual
Section 6: Service
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Data Acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Arming Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
CRT Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Disk Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Keypad and Knob Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
RS-232-C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Power Supply Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Trouble Isolation Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Power Supply Voltages Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
CRT Monitor Signals Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Keyboard Signals Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Assembly Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Removal and Replacement of System Assembly Board . . . . . . . . . . . . . . . . . . 6-17
Removal and Replacement of CRT Monitor Assembly. . . . . . . . . . . . . . . . . . 6-19
Removal and Replacement of Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Removal and Replacement of Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Removal and Replacement of Keyboard Assembly. . . . . . . . . . . . . . . . . . . . . 6-21
Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Data Acquisition Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
RS-232-C Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
BNC Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Keyboard Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
RAM Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
ROM Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Disk Drive Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Cycle Through Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Auxiliary Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
HP 1650B/1651B Contents - 3
Service Manual
Contents
Section 1 General Information
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Instruments Covered by this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Accessories Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Logic Analyzer Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
State Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Timing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Measurement Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
State Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Timing Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Measurement and Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
General Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
General Information
Introduction This service manual explains how to test, adjust, and service the HP 1650B and
HP 1651B Logic Analyzers. This manual is divided into six sections:
·
General Information
·
Installation
·
Performance Tests
·
Adjustments
·
Replaceable Parts
·
Ser vice
This section of the manual includes a description of the HP 1650B/51B Logic
Analyzers, specifications, options, available accessories, and recommended test
equipment.
Listed on the title page of this manual is a microfiche part number. This number
can be used to order 4 X 6 inch microfilm transparencies of the manual. E ach
microfiche contains up to 96 photo-duplicates of the manual pages. The
microfiche package also includes the latest manual changes supplement and
pertinent service notes.
1
Instruments
Covered by this
Manual
The instrument serial number is on the rear panel. Hewlett-Packard uses a two
part serial number consisting of a four-digit prefix and a five-digit suffix separated
by a letter (0000A00000). The prefix is the same for all identical instruments and
changes only when a modification is made that affects parts compatibility. The
suffix is assigned and is different for each instrument. This manual applies directly
to instruments with the serial prefix shown on the title page.
An instrument manufactured after the printing of this manual may have a serial
number prefix that is not listed on the title page. This unlisted serial prefix
indicates the instrument is different from those described in this manual. The
manual for this newer instrument is accompanied by a manual changes
supplement. This supplement contains "change information" that explains how to
adapt the manual to the newer instrument.
In addition to change information, the supplement may contain information for
correcting errors in the manual. To keep this manual as current and accurate as
possible, Hewlett-Packard recommends that you periodically request the latest
manual change supplement. The supplement for this manual is identified with the
manual print date and part number, both of which appear on the manual title page.
Complimentary copies of the supplement are available from Hewlett-Packard.
HP 1650B/1651B General Information
Service Manual 1-1
Safety
Considerations
This product is a Safety Class 1 instrument (provided with a protective earth
terminal). Review the instrument and manual for safety markings and instructions
before operating. Specific warnings, cautions, and instructions are placed
wherever applicable throughout the manual. These precautions must be observed
during all phases of operation, service, and repair of the instrument. Failure to
comply with these precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture, and intended use of this
instrument.
Hewlett-Packard assumes no liability if the customer fails to comply with these
safety requirements.
Product
Description
The H P 1650B is an 80-channel STATE /TIMING (35 MH z/100 MH z) logic
analyzer, selectable in 16-channel groupings. The HP 1651B is a 32-channel
STATE/TIMING (25 MHz/100 MHz) analyzer, also selectable in 16-channel
groupings. The user interface for both models consists of a panel keyboard with an
RPG knob and a 9-inch, white-phosphor, high-resolution CRT for information
display. A 3.5-inch Sony disk drive, for setup storage and information retrieval, is
integral to the analyzers. An RS-232-C port, HP-IB port, and external arming
trigger are available on the rear panel. The RS-232-C and H P-IB ports are used
for printer hardcopy or for logic analyzer control via a controller. Either port can
be used for hardcopy or control.
The following items are other main features of the logic analyzers.
·
Simultaneous state/state, or simultaneous state/timing analysis.
·
Time interval; number of states; pattern search; minimum, maximum, and
average time interval statistics.
·
Transitional timing to store data only when there is a transition.
·
Clock qualifiers, storage qualification, time and number of state tagging, and
prestore.
·
Small lightweight, passive probing.
General Information HP 1650B/1651B
1-2 Service Manual
Accessories
Supplied
The following accessories are supplied with the H P 1650B/51B Logic Analyzer.
·
Woven probe cable (HP part number 01650-61607) with 40-pin connector on
each side, 17 signal lines, 17 return lines, 2 power lines, and 2 power ground
lines. Each power line supplies + 5 volts for preprocessor power. Each
cable supplies 600 milliamperes with a maximum power available from the
HP 1650B/51B of 2 amperes. Five probe cables are supplied with the
HP 1650B and two are supplied with the HP 1651B.
·
Pr obe Tip Assemblies (HP part number 01650-61608) that provide 16 data
channels, 1 clock channel, and 1 ground lead per pod assembly. The probe
input specifications are listed in table 1-1. Five Probe Tip Assemblies are
supplied with the HP 1650B and two are supplied with the HP 1651B.
·
Grabbers for the probe tip assemblies are supplied in packages of 20 (HP
part number 5959-0288). 100 grabbers (5 packages) are supplied with the
HP 1650B and 40 grabber s (2 packages) are suppied with the H P 1651B.
·
Two operating system disks.
·
One 2.3 meter (7.5 feet) power cord. See section 2 for available power cords.
·
One operating and reference manual set.
·
One service manual.
Accessories
Available
·
One RS-232-C Loopback Connector.
The following accessories are available for the HP 1650B/51B Logic Analyzer.
·
Termination Adap ter - HP Part Number 01650-63201.
·
Soft Carrying Case - H P Part Number 1540-1066.
·
HP 1008A /006 Testmobile.
·
HP 92192A 3.5-inch Microfloppy Disks (box of ten)
·
Rackmount Kit - HP Part Number 5061-6175.
·
HP M odel 10269C Probe interface to connect the logic analyzer directly to
microprocessor preprocessors.
·
Preprocessors for specific microprocessors and bus systems (for more
information contact your Hewlett-Packard Sales and Service Office).
HP 1650B/1651B General Information
Service Manual 1-3
Logic Analyzer
Specifications
Probes Minimum Swing: 600 mV peak-to-peak.
The following specifications are the performance standards or limits against which
the H P 1650B/51B Logic Analyzer is tested.
Threshold Accuracy:
Voltage Range Accuracy
-2.0V to + 2.0V
-9.9V to -2.1V
+ 2.1V to + 9.9V
±
150 mV
±
300 mV
±
300 mV
State Mode Clock Repetition Rate: Single phase is 35 MH z maximum. With time or state
counting, minimum time between states is 60 ns (16.67 MHz). Both mixed and
demultiplexed clocking use master-slave clock timing; master clock must follow
³
³
50 ns.
10 ns.
slave clock by at least 10 ns and precede the next slave clock by
Clock Pulse Width:
Setup Time: Data must be present prior to clock transition,
Hold Time: Data must be present after rising clock transition; 0 ns.
Data must be present after falling clock transition, 0 ns (HP 1651B); data must be
present after falling L clock transition, 0 ns (HP 1650B); data must be present after
falling J, K, M, and N clock transition, 1 ns (HP 1650B).
³
10 ns at threshold.
Timing Mode Minimum Detectable Glitch: 5 ns wide at the threshold.
General Information HP 1650B/1651B
1-4 Service Manual
Operating
Characteristics
The following operating characteristics are are typical operating characteristics for
the H P 1650B/51B Logic Analyzer.
Probes Input RC: 100 K
Measurement
Configurations
W ±
2% shunted by approximately 8 pF at the probe tip.
TTL Threshold Preset: + 1.6 volts.
ECL Threshold Preset: -1.3 volts.
Threshold Range: -9.9 to + 9.9 volts in 0.1V increments.
Threshold Setting: Threshold levels may be defined for pods 1 and 2 individually
(H P 1651B). Threshold levels may be defined for pods 1, 2, and 3 on an individual
basis and one threshold may be defined for pods 4 and 5 (HP 1650B).
Minimum Input Overdrive: 250 mV or 30% of the input amplitude, whichever is
greater.
Maximum Voltage:
Maximum Power Available Through Cables: (600 mA) 2/3 amp @ 5V per cable; 2
amp @ 5V per HP 1650B/51B.
Analyzer Configurations:
±
40 volts peak.
Analyzer 1 Analyzer 2
Timing Off
Off Timing
State Off
Off State
Timing State
State Timing
State State
Off Off
Channel Assignment: Each group of 16 channels (a pod) can be assigned to
Analyzer 1, Analyzer 2, or remain unassigned. The HP 1650B contains 5 pods; the
HP 1651B contains 2 pods.
HP 1650B/1651B General Information
Service Manual 1-5
State Analysis MEMORY
Data Acquisition: 1024 samples/channel.
Trace Specification
Clocks: Five clocks (HP 1650B) or two clocks (H P 1651B) are available and can
be used by either one or two state analyzers at any time. Clock edges can be ORed
together and operate in single phase, two phase demultiplexing, or two phase
mixed mode. Clock edge is selectable as positive, negative, or both edges for each
clock.
Clock Qualifier: The high or low level of four ORed clocks (H P 1650B) or one
clock (HP1651B) can be ANDed with the clock specification. Setup time: 20 ns;
hold time: 5 ns.
Pattern Recognizers: Each recognizer is the AND combination of bit (0, 1, or X)
patterns in each label. Eight pattern recognizers are available when one state
analyzer is on. Four are available to each analyzer when two state analyzers are on.
Range Recognizers: R ecognizes data which is numerically between or on two
specified patterns (ANDed combination of 0s and/or 1s). One range term is
available and is assigned to the first state analyzer turned on. The maximum size is
32 bits and on a maximum of 2 pods.
Qualifier: A user-specified term that can be anystate, nostate, a single pattern
recognizer, range recognizer, or logical combination of pattern and range
recognizers.
Sequence Levels: There are eight levels available to determine the sequence of
events required for trigger. The trigger term can occur anywhere in the first seven
sequence levels.
Branching: Each sequence level has a branching qualifier. When satisfied, the
analyzer will restart the sequence or branch to another sequence level.
Occurrence Counter: Seq uence qualifier may be specified to occur up to 65535
times before advancing to the next level.
Storage Qualification: Each sequence level has a storage qualifier that specifies
the states that are to be stored.
Enable/Disable: Defines a window of post-trigger storage. States stored in this
window can be qualified.
Prestore: Stores two qualified states that precede states that are stored.
General Information HP 1650B/1651B
1-6 Service Manual
Tagging
State Tagging: Counts the number of qualified states between each stored state.
Measurement can be shown relative to the previous state or relative to trigger.
Maximum count is 4.4 X (10 to the 12th power).
Time Tagging: Measures the time between stored states, relative to either the
previous state or the trigger. Maximum time between states is 48 hours.
With tagging on, the acquisition memory is halved; minimum time between states is
60 ns.
Symbols
Pattern Symbols: User can define a mnemonic for the specific bit pattern of a
label. When data display is SYMBOL, mnemonic is displayed where the bit
pattern occurs. Bit pattern can include 0s, 1s, and don’t cares.
Range Symbols: User can define a mnemonic covering a range of values. Bit
pattern for lower and upper limits must be defined as a pattern of 0s and 1s. When
data display is SYMBOL, values within the specified range are displayed as
mnemonic + offset from base of range.
Number of Pattern and Range Symbols: 200 total used for both analyzers.
Symbols can be down-loaded over RS-232-C or HP-IB.
Timing Analysis Transitional Timing Mode
Sample is stored in acquisition memory only when the data changes. A time tag
stored with each sample allows reconstruction of waveform display. Time covered
by a full memory acquisition varies with the number of pattern changes in the data.
Sample Period: 10 ns.
Maximum Time Covered By Data: 5000 seconds.
Minimum Time Covered by Data: 10.24 us.
Glitch Capture Mode
Data sample and glitch information stored every sample period.
Sample Period: 20 ns to 50 ms in a 1-2-5 sequence dependent on sec/div and delay
settings.
Memory Depth: 512 samples/channel.
Time Covered by Data: Sample period X 512.
Waveform Display
Sec/div: 10 ns to 100 s; 0.01% resolution.
Delay: -2500 s to 2500 s; presence of data dependent on the number of transitions
in data between trigger and trigger plus delay (transitional timing).
Accumulate: Waveform display is not erased between successive acquisitions.
HP 1650B/1651B General Information
Service Manual 1-7
Overlay Mode: Multiple channels can be displayed on one waveform display line.
Primary use is to view summary of bus activity.
Maximum Number Of Displayed Waveforms: 24
Time Interval Accuracy
Channel to Channel Skew: 4 ns typical.
Measurement and
Display Functions
Time Interval Accuracy:
of time interval reading).
Trigger Specification
Asynchronous Pattern: Trigger on an asynchronous pattern less than or greater
than specified duration. Pattern is the logical AND of specified low, high, or don’t
care for each assigned channel. If pattern is valid but duration is invalid, there is a
20 ns reset time before looking for patterns again.
Greater Than Duration: Minimum duration is 30 ns to 10 ms with 10 ns or 0.01%
resolution, whichever is greater. Accuracy is + 0 ns to -20 ns. Trigger occurs at
pattern + duration.
Les s Than Duration: Maximum duration is 40 ns to 10 ms with 10 ns or 0.01%
resolution, whichever is greater. Pattern must be valid for at least 20 ns. Accuracy
is + 20 ns to -0 ns. Trigger occurs at the end of the pattern.
Glitch/Edge Triggering: Trigger on glitch or edge following valid duration of
asynchronous pattern while the pattern is still present. E dge can be specified as
rising, falling or either. Less than duration forces glitch and edge triggering off.
Autoscale (Timing Analyzer Only)
±
(sample period + channel-to-channel skew + 0.01%
Autoscale searches for and displays channels with activity on the pods assigned to
the timing analyzer.
Acquisition Specifications
Arm ing: Each analyzer can be armed by the run key, the other analyzer, or the
external trigger on rear panel.
Trace Mode: Single mode acquires data once per trace specification; repetitive
mode repeats single mode acquisitions until stop is pressed or until time interval
between two specified patterns is less than or greater than a specified value, or
within or not within a specified range. There is only one trace mode when two
analyzers are on.
Labels
Channels may be grouped together and given a six character name. Up to 20 labels
in each analyzer may be assigned with up to 32 channels per label. Primary use is
for naming groups of channels such as address, data, and control busses.
General Information HP 1650B/1651B
1-8 Service Manual
Indicators
Activity Indicators: Provided in the Configuration, State Format, and Timing
Format menus for identifying high, low, or changing states on the inputs.
Markers: Two markers (X and 0) are shown as dashed lines on the display.
Trigger: D isplayed as a vertical dashed line in the timing waveform display and as
line 0 in the state listing display.
Marker Functions
Time Interval: The X and 0 markers measure the time interval between one point
on a timing waveform and trigger, two points on the same timing waveform, two
points on different waveforms, or two states (time tagging on).
Delta States ( State Analyzer Only): The X and 0 markers measure the number of
tagged states between one state and trigger, or between two states.
Patterns: The X and 0 markers can be used to locate the nth occurrence of a
specified pattern before or after trigger, or after the beginning of data. The 0
marker can also find the nth occurrence of a pattern before or after the X marker.
Statistics: X to 0 marker statistics are calculated for repetitive acquisitions.
Patterns must be specified for both markers and statistics are kept only when both
patterns can be found in an acquisition. Statistics are minimum X to 0 time,
maximum X to 0 time, average X to 0 time, and ratio of valid runs to total runs.
General
Characteristics
Run/Stop Functions
Run: Starts acquisition of data in specified trace mode.
Stop: In single trace mode or the first run of a repetitive acquisition, STOP halts
acquisition and displays the current acquisition data. For subsequent runs in
repetitive mode, STOP halts acquisition of data and does not change current
display.
Data Display/Entry
Display Modes: State listing; timing waveforms; interleaved, time-correlated
listing of two state analyzers (time tagging on); time-correlated state listing and
timing waveform display (state listing in upper half, timing waveform in lower half,
and time tagging on).
Timing Waveform: Pattern readout of timing waveforms at X or 0 marker.
Bases: Binary, Octal, Decimal, Hexadecimal, ASCII (display only), and
User-defined symbols.
The following general characteristics for the HP 1650B/51B are the environmental
operating conditions, shipping weights, and instrument dimensions.
Operating
Environment
HP 1650B/1651B General Information
Service Manual 1-9
Temperature: Instruments, 0° to 55° C (+ 32° to 131°F); probes and cables, 0° to
°
C (+ 32° to 149°F). Recommended temperature range for disk media, 10° to
65
°
C (+ 50° to 149°F).
50
Humidity: Instruments up to 95% relative humidity at + 40°C; (104°F).
Recommended humidity range for disk media, 8% to 80% relative humidity at
°
C (+ 104°F).
+40
Altitude: To 4600 m (15,000 ft).
Vibr atio n:
Operating: Random vibration 5-500 Hz, 10 minutes per axis, &2.41 g (rms).
Non-operating: Random vibration 5-500 Hz, 10 minutes per axis, & 2.41 g (rms);
and swept sine resonant search, 5-500 Hz, 0.75 g (0-peak), 5 minute resonant dwell
@ 4 resonances per axis.
Weig ht : 10.0 kg (22 lbs) net; 18.2 kg (40 lbs) shipping.
Power: 115V/230V, 48-66 Hz, 200 W maximum.
Dimensions: See outline drawing below.
Recommended
Test Equipment
General Information HP 1650B/1651B
1-10 Service Manual
Table 1-1 lists the test equipment required to test performance, make adjustments,
and troubleshoot the HP 1650B/51B Logic Analyzers. The table includes the
critical specifications of the test equipment and lists each procedure in which the
equipment is required. Other equipment may be substituted if it meets or exceeds
the critical specifications listed in the table.
Table 1-1. Recommended Test Equipment
Equipment Required Critical Specifications Recommended Model
Oscilloscope dual channel HP 54502A P,T
dc to 300 MHz
Pulse 5 ns pulse width H P 8161A/020 P
Generator 20 ns period
1.3 ns risetime
double pulse
100 kHz Repetition R ate
Overshoot: 5% of Amp.
Power + or - 10.2 V output HP 6216B P
Supply current: 0 - 0.4 amperes
Adapter BNC(f)-to-Dual Banana HP Part Number P
1251-2277
DMM 5.5 digit resolution HP 3478A A
Resistor 2 ohms, 25 watts HP Part Number T
0811-1390
BNC Cable (2) 50 ohms with UG-88C/U BNC (m) HP 10503A P
connectors
Use *
BNC Adapter (2) BNC tee (m) (f) (f) HP Part Number P
1250-0781
BNC Feedthrough 50 ohm BNC HP 10100C P
* P = Performance Tests, A = Adjustments, T = Troubleshooting
HP 1650B/1651B General Information
Service Manual 1-11
Section 2 Installation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Initial Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Line Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Operating Disk Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
HP-IB Interfacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
HP-IB Address Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
RS-232-C Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
RS-232-C Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Operating Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Storage and Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Tagging for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Original Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Other Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Cleaning Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Installation
Introduction This section of the manual contains information and instructions necessary for
setting up the H P 1650B/51B Logic Analyzer. This includes inspection
procedures, power requirements, hardware connections and configurations, and
packaging information.
2
Safety
Considerations
Initial
Inspection
Power
Requirements
Caution BEFORE CONNECTING POWER TO THIS INSTRUMENT, be sure the Line
The safety symbols used with Hewlett-Packard instruments are illustrated in the
front of this manual. WARNING and CAUTION symbols and instructions should
be reviewed before operating the instrument. These warnings and cautions must
be followed for your own protection and to avoid damaging the instrument.
Inspect the shipping container for damage. If the shipping container or cushioning
material is damaged, keep it until the contents of the shipment have been checked
for completeness and the instrument has been checked mechanically and
electrically. The contents of the shipment are listed under "Accessories Supplied"
in Section 1. If the contents are incomplete, if there is mechanical damage or
defect, or if the instrument does not operate properly, notify the nearest
Hewlett-Packard office. If the shipping container is damaged, or the cushioning
materials show signs of stress, notify the carrier as well as the Hewlett-Packard
office. Keep the shipping materials for the carrier’s inspection. The
Hewlett-Packard office will arrange for repair or replacement at HP option
without waiting for claim settlement.
The HP 1650B/51B Logic Analyzer requires a power source of either 115 Vac or
230 Vac, -22% to + 10%; single phase, 48 to 66 Hz, 200 Watts maximum power.
Voltage Select switch on the rear panel of the instrument is set properly and the
correct fuse is installed.
HP 1650B/1651B Installation
Service Manual 2-1
Line Voltage
Selection
When shipped from the factory, the line voltage selector is set and an appropriate
fuse is installed for operating the instrument in the country of destination.
To operate the instrument from a power source other than the one set at the
factory:
1. Turn the rear power switch to the OFF position and remove the power cord
from the instrument.
2. Remove the fuse module by carefully prying it at the top center of the
module until you can grasp it and pull it out by hand as shown below.
Figure 2-1. Fuse Module Removal
Installation HP 1650B/1651B
2-2 Service Manual
3. Reinsert the fuse module with the arrows aligned for your application. See
fuse module below.
Figure 2-2. Fuse Module
4. Reconnect the power cord, turn the rear power switch to the ON position,
and continue normal operation.
Power Cable This instrument is equipped with a three-wire power cable. When connected to an
appropriate AC power outlet, this cable grounds the instrument cabinet. The type
of power cable plug shipped with the instrument depends on the country of
destination. See Table 2-1 for the option numbers of available power cables and
plug configurations.
Operating Disk
Installation
This instrument is shipped with a yellow protective disk in the disk drive. Before
applying power to the instrument, remove the protective disk from the disk drive
and install the operating disk. Reinstall the protective disk whenever the
instrument is to transported.
Applying Power When power is applied to the HP 1650B/51B, a power-up self test is automatically
performed. For information on the power-up self test, refer to section 3.
HP 1650B/1651B Installation
Service Manual 2-3
Table 2-1. Power Plug Configurations
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2-4 Service Manual
User Interface The front-panel user interface of the HP 1650B/51B consists of fr ont-panel keys,
the KNO B, and display. The interface allows configuration of each analyzer
(machine) within the logic analyzer. It also displays acquired data and
measurement results.
Use the front-panel interface with the following process:
·
select the desired menu with menu keys
·
place the cursor on the desired field within the menu by rotating the KNOB
·
display the field options or current data by pressing the SELECT key
·
select the desired option by rotating the KNOB or entering new data by using
the KNOB or the keypad
·
Start and stop data acquisition by using the RUN and STOP keys
HP-IB
Interfacing
The Hewlett-Packard Interface Bus (HP-IB) is Hewlett-Packard’s implementation
of IEEE Standard 488-1978, "Standard Digital Interface for Programming
Instrumentation." HP-IB is a carefully defined interface that simplifies the
integration of various instruments and computers into systems. The interface
makes it possible to transfer messages between two or more HP-IB compatible
devices. HP-IB is a parallel bus of 16 active signal lines divided into three
functional groups according to function.
Eight signal lines, called data lines, are in the first functional group. The data lines
are used to transmit data in coded messages. These messages are used to program
the instrument function, transfer measurement data, and coordinate instrument
operation. Input and output of all messages, in bit parallel-byte serial form, are
also transferred on the data lines. A 7-bit ASCII code normally represents each
piece of data.
Data is transferred by means of an interlocking "Handshake" technique which
permits data transfer (asynchronously) at the rate of the slowest active device used
in that transfer. The data byte control lines coordinate the handshaking and form
the second functional group.
The remaining five general interface management lines (third functional group)
are used to manage the devices connected to the HP-IB. This includes activating
all connected devices at once, clearing the interface, and other operations.
The HP-IB connector and on the rear panel are shown in figure 2-3.
HP 1650B/1651B Installation
Service Manual 2-5
Figure 2-3. HP 1650B Rear Panel
HP-IB Address
Selection
Each instrument connected to the HP-IB interface bus requires a unique address.
The address provides a method for the system computer to select individual
instruments on the bus. The address of the H P 1650B/51B defaults at power up to
decimal "07". The corresponding ASCII code is a listen of "’" and a talk address of
"G ." To change the address of the HP 1650B/51B proceed as follows:
1. Press the I/O key on the front-panel keypad and the I/O menu will appear on
screen.
2. Rotate the KNOB until "I/O Port Configuration" is highlighted.
3. Press the SELE CT key and the External I/O Port Configuration menu will
appear on screen.
Installation HP 1650B/1651B
2-6 Service Manual
Figure 2-4. External I/O Port Configuration Menu
4. Select the HP-IB Address field with the KNOB and press the SELECT key.
5. When the pop-up field appears on screen, rotate the KNOB to select the
desired HP-IB address.
6. Press the SELE CT key to enter the new address.
7. Select the DONE field in the upper-right corner with the KNOB to exit the
External I/O Port Configuration menu.
RS-232-C
Interface
The HP 1650B/51B interfaces with RS-232-C communication lines through a
standard 25 pin D connector. The H P 1650B/51B is compatible with RS-232-C
protocol. When a hardwire handshake method is used, the Data Terminal Ready
(DTR) line (pin 20 on the Computer/Modem connector) is used to signal whether
space is available in the logical I/O buffer for more data. Pin outs of the RS-232-C
connectors are listed in table 2-4.
HP 1650B/1651B Installation
Service Manual 2-7
Table 2-1. RS-232-C Signal Definitions
RS-232-C
Pin No. Function Standard Signal Direction and Level
1 Protective Ground AA Not applicable
2 Transmitted Data (TD) BA Data from Logic Analyzer
High = Space = "0" = +12 V
Low = Mark = "1" = -12 V
3 Received Data (RD) BB Data to Logic Analyzer
High = Space = "0" = +3 V to +25 V
Low = Mark = "1" = -3 V to -25 V
4 Request to Send (R TS) CA Signal from Logic Analyzer
High = ON = + 12 V
Low = OFF = -12 V
5 Clear to Send (CTS) CB Signal to Logic Analyzer
High = ON = + 3 V to + 12 V
Low = OFF = -3 V to -25 V
6 Data Set Ready (DSR) CC Signal to Logic Analyzer
High = ON = + 3 V to + 25 V
Low = OFF = -3 V to -25 V
7 Signal Ground AB Not applicable
8 Data Carrier Detect (DCD) CF Signal to Logic Analyzer
20 Data Terminal Ready (DTR) CD Signal from Logic Analyzer
23 Data Signal Rate Selector CH/CI Signal from Logic Analyer
RS-232-C
Configuration
High = ON = + 3 V to + 25 V
Low = OFF = -3 V to -25 V
High = ON = + 12 V
Low = OFF = -12 V
Always H igh = ON = + 12 V
At power up, the RS-232-C interface is configured as shown in previous figure. To
change the RS-232-C configuration:
1. Press the I/O key on the front-panel keypad and the I/O menu will appear on
screen.
2. Rotate the KNOB until "I/O Port Configuration" is highlighted.
3. Touch the SE LE CT key and the External I/O Port Configuration menu will
appear on screen.
Installation HP 1650B/1651B
2-8 Service Manual
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