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HP
Measuring Instruments
4934A
HP 4934A User Manual
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Manual
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General
Specification
Instrument
specifications
are
listed
on
Page
3-10.
These
specifications
are
the
performance
standards
or
limits
against
which
the
instrument
is
tested.
Safety
Information
The
following
general
safety
precautions
must
be
observed
during
all
phases
of
operation,
service,
and
repair
of
this
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
the
instrument.
Hewlett-
Packard
Company
assumes
no
liability
for
the
customer’s
failure
to
comply
with
these
requirements.
This
is
a
Safety
Class
I
instrument
(provided
with
a
protective
earthing
ground,
incorporated
in
the
powercord).
The
mains
plug
shall
only
be
inserted
in
a
socket
outlet
provided
with
a
protective
earth
contact.
Any
interruption
of
the
protective
conductor
inside
or
outside
of
the
instmment
is
likely
to
make
the
instrument
dangerous.
Intentional
interruption
is
prohibited.
DO
NOT
operate
the
product
in
an
explosive
atmosphere
or
in
the
presence
of
flammable
gasses
or
tumes.
DO
NOT
use
repaired
fuses
or
short-circuited
fuseholders:
For
continued
protection
against
fire,
replace
the
line
fuse(s)
only
with
fuse(s)
of
the
same
voltage
and
current
rating
and
type.
DO
NOT
perform
procedures
involving
cover
or
shield
removal
unless
you
are
qualified
to
do
so:
Operating
personnel
must
not
remove
equipment
covers
or
shields.
Procedures
involving
the
removal
of
covers
and
shields
are
for
use
by
service-trained
personnel
only.
DO
NOT
service
or
adjust
alone:
Under
certain
conditions,
dangerous
voltages
may
exist
even
with
the
equipment
switched
off.
To
avoid
dangerous
electrical
shock,
service
personnel
must
not
attempt
internal
service
or
adjustment
unless
another
person,
capable
of
rendering
first
aid
and
resuscitation,
is
present.
DO
NOT
operate
damaged
equipment:
Whenever
it
is
possible
that
the
safety
protection
features
built
into
this
product
have
been
impaired,
either
through
3-2
General
Information
43
45
Table of Contents
Table of Contents
5
Getting Started
11
Introduction
11
Switch-On
11
Front Panel Features
12
Demonstrating the HP 4934A
15
Demonstration 2
16
Error Codes
17
Making Measurements
19
Preliminary Setup
19
Connecting the HP 4934A to the Test Circuit
19
Dial and Hold
20
Dialing Using the HP 4934A and a Bott-In
21
Receiving an Incoming Call and Holding the Line
22
Level and Frequency
23
Principles
23
Instrument Operation
25
Message Circuit Noise
28
Principles
28
How It Is Measured
29
Instrument Operation
30
Noise with Tone (Notched Noise)
31
Principles
31
How It Is Measured
31
Instrument Operation
32
Signal to Noise
33
Principles
33
How It Is Measured
33
Instrument Operation
34
Impulse Noise
35
Principles
35
Instrument Operation
36
P/AR (Peak to Average Ratio)
39
Principles
39
How It Is Measured
40
Instrument Operation
40
Noise to Ground
41
Principles
41
How It Is Measured
41
Instrument Operation
42
General Information
43
Introduction
43
About this Version
43
Specification
44
Safety Information
44
General
44
Safety Symbols
45
Statement of Compliance
47
Electromagnetic Compatibility (EMC) Information
47
Instruments Covered by Manual
49
Options Available
50
Accessories Supplied
51
Accessories Available
51
Specifications
52
Installation
59
Introduction
59
Initial Inspection
59
Preparation for Use
60
Power Requirements
60
Line Fuse
60
Power Cable
61
Battery (Option 001 or Retrofit)
61
Battery
61
Mating Connectors (Front Panel)
62
Operating Environment
62
Cleaning
62
Noise Declaration
63
Storage and Shipment
63
Environment
63
Packaging
63
Performance Tests
65
Introduction
65
Calibration Cycle
65
Recommended Test Equipment
66
Operational Verification
67
Receiver Frequency
68
Receiver Level
69
Weighting Filters
70
Impulse Noise Count
73
Hold Circuit
75
Dynamic Hold Circuit
77
Transmitter Frequency Accuracy
83
Transmitter Level Range
84
Transmitter Level Accuracy
85
Transmitter Flatness at +10 Dbm
86
Transmitter Flatness at -40 Dbm
88
Receiver Frequency Range/Accuracy
94
Receiver Level Accuracy
96
Message Circuit Noise Accuracy
98
Notch Filter Rejection
100
Signal to Noise Ratio Accuracy
101
Impulse Noise Threshold Accuracy
103
Noise to Ground Accuracy
105
Peak to Average Ratio (P/AR) Accuracy
107
Software Downloading
113
Introduction
113
Quick Download Procedure
114
About the DOWNLOAD Program
115
Remote Control
117
Introduction
117
The Serial Port 7~2
118
Serial Port Type
118
Baud Rates
118
Cable Pinout
119
Null Modem
119
Setting up for Remote Control
120
Connecting the TIMS to a Controller
120
Setting the Baud Rate
120
Activating Remote Mode
120
Deactivating Remote Mode
120
Control Commands
121
Query Commands
124
Results Display (DISP?) Format
124
Range Error Messages
125
A Service Accessory 1 (Sal)
127
20 Db Amplifier/4 Khz Filter
127
Performance Test
127
B Service Accessory 2 (SA2)
133
Power Splitter/Adder
133
Performance Test
133
5
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HP 4934A Specifications
General
Brand
HP
Model
4934A
Category
Measuring Instruments
Language
English
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