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Agilent 5071A Primary
Frequency Standard
Telecommunications
Options Supplemental
Manual
This manual describes the Telecommunications options for the Agilent
5071A Primary Frequency Standard. The information in this manual
applies toinstruments with one or more telecommunications options
having the number prefix listed below, unless accomplanied by a
"Manual Updating Changes" package indicating otherwise.
SERIAL NUMBER PREFIX: 3249A and above
Options: 048, 104, 105, 220, 221, 222, 270, 271, and 272
Agilent Technologies, Inc. 8.CD.NL.A.03.11.97.R1.J.CW2F
Santa Clara Site
5301 Stevens Creek Boulevard
Santa Clara, California 95052-8059
Copyright Agilent
Technologies, Inc. 1994, 2000
All Rights Reserved.
Reproduction, adaptation, or
translations without prior
written permission is
prohibited, except as allowed
under the copyright laws.
Printed: December 2000
Printed in USA
Manual part number
05071-90042
Certification
and Warranty
Certification
Agilent Technologies
certifies that this product
met its published
specification at the time of
shipment from the factory.
Agilent further certifies that
its calibration measurements
are traceable to the United
States National Institute of
Standards and Technology
(formerly National Bureau of
Standards), to the extent
allowed by the Institute’s
calibration facility, and to
the calibration facilities of
other International
Standards Organization
members.
Warranty
Agilent warrants
Agilent hardware,
accessories and supplies
against defects in materials
and workmanship for a
period of one year from date
of shipment. If Agilent
receives notice of such
defects during the warranty
period, Agilent will, at its
option, either repair or
replace products which prove
to be defective. Replacement
products may be either new
or like-new.
Agilent warrants that
Agilent software will not fail
to execute its programming
instructions, for the period
specified above, due to
defects in material and
workmanship when properly
installed and used. If Agilent
receives notice of such
defects during the warranty
period, Agilent will replace
software media which does
not execute its programming
instructions due to such
defects.
For detailed warranty
information, see back matter.
Safety Considerations
General
This product and related
documentation must be
reviewed for familiarization
with this safety markings
and instructions before
operation.
This product is a safety
Class I instrument (provided
with a protective earth
terminal).
Before Applying Power
Verify that the product is set
to match the available line
voltage and the correct fuse
is installed. Refer to
instructions in Chapter 1 of
the Manual.
Before Cleaning
Disconnect the product from
operating power before
cleaning.
Safety Earth Ground
An uninterruptible safety
earth ground must be
provided from the mains
power source to the product
input wiring terminals or
supplied power cable.
Warning Symbols That
May Be Used In This
Book
Instruction manual symbol;
the product will be marked
with this symbol when it is
necessary for the user to
refer to the instruction
manual.
Indicates hazardous
voltages.
Safety Considerations
(contd)
Indicates earth (ground)
terminal.
or
Indicates terminal is
connected to chassis when
such connection is not
apparent.
Indicates Alternating
current.
Indicates Direct current.
WARNING
BODILY INJURY OR
DEATH MAY RESULT
FROM FAILURE TO HEED
A WARNING. DO NOT
PROCEED BEYOND A
WARNING SIGN UNTIL
THE INDICATED
CONDITIONS ARE FULLY
UNDERSTOOD AND MET.
CAUTION
Damage to equipment, or
incorrect measurement
data, may result from
failure to heed a caution.
Do not proceed beyond a
CAUTION sign until the
indicated conditions are
fully understood and met.
For additional safety and
acoustic noise information,
see back matter.
MANUAL UPDATING CHANGES CHANGE DATE: December 12, 2001
MANUAL UPDATING COVERAGE
This supplement adapts your manual to
Serial Numbers prefixed through:
US3930
MANUAL IDENTIFICATION
Instrument: Agilent 5071A
Primary Frequency Standard
Telecommunications Options
Supplemental Manual
Manual Print Date: December 2000
Manual Part Number: 05071-90042
ABOUT THIS SUPPLEMENT
The information in this supplement is provided to correct manual errors and to adapt the manual
to instruments containing changes after the manual print date.
Change and correction information in this supplement is itemized by page numbers corresponding
to the original manual pages. The pages in this supplement are organized in numerical order by
manual page number.
HOW TO USE THIS SUPPLEMENT
Insert this title page in front of the title page in your manual.
Perform all changes specified for “All Serials”, and all changes through the Series Prefix of
your instrument or board.
Insert any complete replacement pages provided into your manual in the proper location.
The following pages are included in this update:
If your manual has been updated according to the last edition of this supplement, you need only
perform those changes pertaining to the new series prefix; see List of Effective Pages. New
information affecting “All Serials” will be indicated by a “#” in front of the change.
LIST OF EFFECTIVE PAGES
SERIAL PREFIX, SERIAL #
OR DATE CODE
PAGES
(05071-90042, December 2000)
# All Serials ....................... 3-3.
All Serials ....................... All pages.
MANUAL CHANGES
AGILENT 5071A TELECOMMUNICATIONS OPTIONS SUPPLEMENTAL MANUAL
SERIAL PREFIX, SERIAL #
OR DATE CODE
CHANGES
# Page 3-3, Accessories Furnished, dc input connector
All Serials >Add the following
Option 048: Delete reference to dc input connector part number 1251-0126
Title Page, Serial Number Prefix
All Serials >Change from "3249A and above" to "US3930"
Throughout The Entire Manual
All Serials >Change all references of "HP" to "Agilent"
>Change all references of "HP 5071A" to "5071A"
iii
Preface
How to Use This Manual v
Instrument Identification v
Instruments Covered by This Manual vi
Manual Organization vi
How to Order Manuals vi
1 Operating and Programming
Introduction 1-2
Introducing the HP 5071A 1-2
HP 5071A Major Features 1-2
Operating The HP 5071A 1-2
Clock Functions 1-2
Getting Started 1-3
The HP 5071A at a Glance 1-3
Connectors 1-3
Rear Panel Connections 1-3
Starting The HP 5071A 1-6
Performing Basic Tasks 1-6
Synchronizing to an External 1 PPS Reference 1-6
Powering Down the HP 5071A 1-6
Using the HP 5071A 1-7
Monitoring Status 1-7
Disabling the Internal Standby Battery 1-7
In Case of Difficulty 1-8
Front-Panel Indicators and Messages 1-8
Operating System Failures 1-8
Restarting the HP 5071A 1-8
Verifying Operation 1-8
2. Rear-Panel Output Connectors 1-8
HP 5071A Command References 1-9
HP 5071A Command Summary 1-9
SCPI Commands 1-9
SCPI Subsystem Commands 1-9
Status Reporting 1-9
Rear-Panel Status Output Operation 1-9
Status Output Programming 1-9
Contents
Contents
iv
Installation 1-10
Preparation for Use 1-10
Power Requirements 1-10
Bench Operation 1-10
Operating the HP 5071A From External Dc Power 1-10
Preparing the HP 5071A For External Dc Operation 1-11
Replacing the External Dc Input Power Fuse 1-11
Internal Standby Battery Maintenance 1-11
Long-Term Storage 1-11
2Service
Performance Tests 2-2
Service 2-3
Top-Level Diagnostic Tree Organization 2-4
Warmup and Fatal Error Diagnostic Tree 2-5
Advisory Messages 2-6
Assembly/Module Diagnostic Trees 2-8
A9 Diagnostic Tree (A/M Subsection 4) 2-9
Theory of Operation 2-10
Introduction 2-10
Simplified Functional Description 2-10
Functional Block Descriptions 2-11
Instrument Control Block 2-12
Reference Oscillator/RF-Chain Block 2-12
Input/Output 2-13
Power Supply Block 2-14
A1 Motherboard Circuit Description 2-15
A11 Power Steering Logic Assembly 2-16
48V Subpanel Assembly 2-17
B1 Internal-Standby Battery 2-18
Replaceable Parts 2-19
Exchange Assemblies 2-19
Backdating 2-21
Contents
v
3 Specifications
Supplemental Characteristics 3-2
Time Standard 3-2
Clock 1PPS Outputs 3-2
Clock Synchronization 3-2
Internal Standby Battery (Nominal Values) 3-2
Environmental 2-9
Power Requirements 3-2
Weight 3-3
Accessories Furnished 3-3
dc input connector 3-3
Available Accessories and Options 3-4
Options 3-4
Contents
vi
vii
Preface
This manual provides operating, programming, and assembly-level
service information for the HP 5071A Primary Frequency Standard
Telecommunications options.
How to Use This Manual
Telecommunications option information is presented as changes,
additions, and deletions to the material covered in the HP 5071A
Operating and Programming and Assembly-Level Service manuals.
The information appears in sequential order of occurrence
corresponding to the subject headings that are affected by the options.
Each occurrence of telecommunications option information uses the
following presentation format:
Except for the rear-panel illustration in chapter 1 of the HP 5071A
Operating and Programming manual and Figure 2-1, all changes and
corrections to manual illustrations appear as descriptive text items
that convey new, changed, or deleted information about the artwork.
The structure of topics covered corresponds to the outlines of the
HP 5071A Operating and Programming and Assembly-Level Service
manual except for specifications which occupies its own chapter. (See
manual organization below.)
Instrument Identification
Instrument identification is made from the serial number located on
the rear panel of the HP 5071A. Agilent uses a two-part serial number
with the first part (prefix) identifying a series of instruments and the
second part (suffix) identifying a particular instrument within a series.
An Agilent assigned alpha character between the prefix and suffix
identifies the country in which the instrument was manufactured.
Subject heading(s): a. Left-justified option designation where:
Option 048 = 48 Vdc power option, and
Any TCO Option = Telecommunications
output options 104, 105, 220, 221, 222, 270,
271, or 272.
b. Text information explanation for
either HP 5071A manual, and/or,
c. Corrected text information for the
cited subject heading(s)
Preface
viii
Instruments Covered by This manual
This manual applies to any HP 5071A Primary Frequency Standard
that is equipped with one or more of the telecommunications options
shown on the title page and has the same serial number prefix(es) also
shown on the title page. If the serial number prefix of your standard
differs from that listed on the title page of this manual, then there may
be differences between this manual and your instrument.
Instruments having a higher serial prefix are covered when required
by one or more manual-change sheets included with this manual. If a
required change sheet is missing, contact your nearest Agilent Sales
Office listed at the back of this manual.
Manual Organization
This telecommunication options supplemental manual consists of a
table of contents, preface, and three chapters. The page running
headers identify the chapters and sections of this manual. The chapter
contents are summarized as follows:
How to Order Manuals
This manual’s part number is 05071-90031. Use it to order copies of
this manual. The HP 5071A Operating and Programming manual
part number is 05071-90029. The HP 5071A Assembly-Level Service
manual part number is 05071-90003.
Chapter 1,
Chapter 2,
Chapter 3,
Operating and Programming, is divided into seven
sections: Introduction, Getting Started, Using the
5071A, In Case of Difficulty, HP 5071A Command
References, and Installation.
Assembly-Level Service, is divided into five sections:
Performance Tests, Service, Theory of Operation,
Replaceable Parts, and Backdating.
Specifications, is divided into two sections:
Supplemental Characteristics, and Available
Accessories and Options.
1
Operating and Programming
Operating and Programming
Introduction
1-2
Introduction
This section describes the additions, changes, and deletions to the
information that appears in the introduction of the 5071A Operating
and Programming manual.
Introducing the 5071A
5071A Major Features
In the bulleted text delete:
• 45 minute standby battery
Operating The 5071A
Clock Functions
1st paragraph, 2nd sentence is changed:
The 1 pps output is moveable in time and can be automatically
synchronized with other 1 PPS sources.
3rd paragraph is changed:
1 pps output: There is one 1 pps output on the 5071A front panel.
4th paragraph is changed:
The 1 pps output is TTL compatible and requires 50Ω termination.
You can automatically synchronize the 1 PPS signal to an external
1 PPS, or manually change its timing by up to ± 500 ms in 50 ns
steps. Use the front-panel Sync Input for an external system reference
input.
2nd paragraph (page vii) is changed:
Power input and management: The 5071A operates from either ac or
dc power. Power-source priority is controlled by the 5071A. The
priority order is:
1. External dc power: when below the specified minimum voltage (40
Vdc on both dc inputs), or when absent, the 5071A switches to,
2. Ac line power.
(Item 3 is deleted.)
Option 048:
Any TCO Option:
Any TCO Option:
Any TCO Option:
Option 048:
Operating and Programming
Getting Started
1-3
Getting Started
This section describes the additions, changes, and deletions to the
information that appears in chapter 1 of the 5071A Operating and
Programming manual.
CHAPTER GUIDE
Where to Find Important Topics
In the bulleted list delete:
• Powering Down the 5071A 1-8
The 5071A at a Glance
Connectors
The paragraph immediately following item 8. Sync Input is changed-
(The electrical characteristics of these connectors are the same as the
rear-panel 1 pps Output and Sync Input. See “Rear-Panel Features”
on page 4 and 5 for more information.) The rear-panel 1 pps outputs
and sync input connectors are absent. The front-panel 1 pps output
and sync input signal characteristics are however accurately
described by items 5 and 6 of Table 1-1 “Connector Descriptions” in
the Operating and Programming manual.
Rear-Panel Connections
Table 1-1 Connector Descriptions items in the Operating and
Programming manual are changed:
Items 5 and 6 are absent from the rear-panel.
Item 9 is absent.
Item 10 Connector Type is a 5-screw terminal strip.
Item 10 Signal Characteristics are 40-58 Vdc on the rear-panel
terminal strip dc-power inputs 1 and/or 2 with GND as chassis
ground.
Option 048:
Any TCO Option:
Any TCO Option:
Option 048:
Operating and Programming
Getting Started
1-4
5071A Rear Panel Connections
(See Table 1-1 in this chapter for connector descriptions)
NOTE
The illustration on these pages depicts an 5071A equipped with
Telecomm Options 048 and 272. When the telecomm output option
includes either 100 or 120 Ω balanced output lines, the Framed
Output connector will be a two-center-conductor BNC in place of the
one shown above. In addition, the Mb/s and impedance designations
will correspond to the particular telecomm output option shipped with
the 5071A.
OPTIONS
001 Hi Performance
5071A
Sync Out
WARNING:
To avold electric shock,
do not remove covers.
No user-serviceable parts
inside.
Refer all servicing to
qualified personnel.
CAUTION:
METRIC & INCH HARDWARE
CONSULT SERVICE MANUAL
ISM 1-A
92
FOR LABORATORY USE BY
QUALIFIED PERSONNEL
FOUR USAGE EN LABORATOIRE
PAR PERSONNEL QUALIFIE
!
SE
R
I
A
L PL
A
TE
12
.
75
x
32
OUTPUTS
P
o
r
t
1
P
o
r
t
2
Programmable
outputs
5MHz or
10MHz
+13 dBm 50 W
Sine Wave
1 MHz
100 kHz
8 kHz Sync In
TTL
50W
TTL
50W
Framed Output
G.703/6
G.704
50W
Status
Output
RS - 232C
(DTE)
!
8 kHz Sync Out
Sync Out
2.048 Mb/s
50W
TTL
75W
G.703/10
1 2
34 5
Operating and Programming
Getting Started
1-5
120 Vac
7
TELE
C
O
M
OPTIO
N
S
:
48
V
ol
t
1
.
544
M
b
/
s
2
.
048
M
b
/
s
048 104
105
220
270
221
271
222
272
O
p
e
r
a
t
ing
V
ol
t
a
g
e
R
a
ng
e
:
40
t
o
58
V
DC
I
npu
t
1
I
npu
t
2
48
V
DC 48
V
DC
G
ND
F
u
se
:
2
.
5A
250
V
F
U
SE
CAU
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:
F
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d
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e
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ace
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a
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.
POWE
R
/F
U
SE
100
V
A
M
A
X
L
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e
:
100
/
120
V
220
/
240
V
F
u
se
:
1
.
5
A
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.
8
A
T
F
r
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:
50
-
400
H
z
50
-
60
H
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9
48
V
DC
I
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t
Operating and Programming
Getting Started
1-6
Table 1-1 Rear-Panel Telecommunications Options Connections
Item
Number
Function
Connector
Type
Signal Characteristics
1
8 kHz Sync In BNC (F)
8 kHz, TTL level, into 50 Ω
2
8 kHz Sync Out BNC (F)
8 kHz, TTL level, into 50 Ω
3*
Framed Output BNC (F)
4.8 V p-p max into 75 Ω
(6V p-p into 100, or 120 Ω)
4*
Sync Out BNC (F)
3 V p-p max into 75 Ω
5
Sync Out BNC (F)
TTL level, into 50 Ω
6
Dc Power Fuse Cartridge
Fuse
Fuses external dc power, 2.5 amp, 250-
volt rating (part number 2110-0952)
7
Dc Power Input 5-Screw
Terminal
Strip
40 - 58 Vdc, 100 W Max, as labeled on
rear panel (See bottom of page 1-10)
* Note: Item 3, Framed Output complies with ITU-T (formerly CCITT) G.703/6 (G.703/2
if option 104 or 105 is present) formatted per G.704.
Item 4, per G.703/10, 75 Ω (Additionally @ 1.544 MHz if option 104 or 105
present).
Starting The 5071A
Bottom of page 1-6. * note is changed:
* 1 entry may be present: “Power source is BATT”
Performing Basic Tasks
Synchronizing to an External 1 PPS Reference
Observe the following changes to the external synchronization
procedure:
References to 1 PPS outputs and Sync inputs are singular.
Reference to rear-panel 1 pps output(s) and Sync input do not apply.
Use of the front-panel ARM REAR menu option will always result in
the display showing Sync timed out.
Powering Down the 5071A
This procedure is deleted.
Option 048:
Any TCO Option:
Option 048:
Operating and Programming
Using the 5071A
1-7
Using the 5071A
This section describes the additions, changes, and deletions to the
information that appears in chapter 2 of the 5071A Operating and
Programming manual.
CHAPTER GUIDE
All references to 1 PPS outputs and Sync inputs are singular.
Chapter Summary
In the bulleted list delete.
• Disabling the Internal-Standby Battery 2-15
Where to Find Important Topics
In the bulleted list delete:
• Disabling the Internal Battery 2-15
Monitoring Status
Table 2-2. Internal Operating Parameters
The bottom rightmost table cell entry under Typical Range is changed:
DC or AC
Disabling the Internal -Standby Battery
This procedure is deleted.
Any TCO Option:
Option 048:
Option 048:
Option 048:
Option 048:
Operating and Programming
In Case of Difficulty
1-8
In Case of Difficulty
This section describes the additions, changes, and deletions to the
information that appears in chapter 3 of the 5071A Operating and
Programming manual.
Front-Panel Indicators and Messages
Table 3-1. Front-Panel Status Lights
All references to internal-battery power, battery status, or battery
operation are deleted.
Operating System Failure
Restarting the 5071A
Step 3 of the procedure is deleted.
Step 4 is renumbered and changed:
3. Reapply external dc or ac-line power.
Step 5 becomes step 4.
Verifying Operation
2. Rear-Panel Output Connectors
Checking the Outputs
Step 1 of the procedure is changed:
1. Connect one of the 5071A outputs to an input channel of the
54600A with a 50Ω feed through termination and BNC cable.
(When verifying rear-panel telecommunications outputs, use
manual scope settings and the appropriate termination as shown
on the rear-panel labels and in Table 1-1. The referenced rear-
panel telecommunications outputs should comply with ITU-T
(formerly CCITT) G.703/6 (G.703/2 if option 104 or 105 is present),
formatted per G.704. Sync Out complies per G.703/10, 75 Ω
(Additionally @ 1.544 MHz if option 104 or 105 is present.
Option 048:
Option 048:
Option 048:
Option 048:
Any TCO Option:
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