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Measuring Instruments
4934A
HP 4934A User Manual
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Manual
Specs
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You
can
type
DOWNLOAD
/?
to
get
help
with
this
command.
Each
software
.OUT
file
is
keyed
to
individual
4934A
serial
numbers.
A
particular
copy
of
a
.OUT
file
may
be
valid
for
only
one
or
several
test
sets,
depending
on
your
requirements.
About
the
DOWNLOAD
Program
The
DOWNLOAD.EXE
executable
file
is
included
on
the
distribution
diskette
when
you
receive
your
operating
software
upgrade.
While
simply
typing
DOWNLOAD
to
execute
the
program
is
adequate
for
most
applications,
the
DOWNLOAD
program
accepts
several
variables
that
modify
its
operation
for
special
cases.
The
full
format
for
the
download
command
is
as
follows;
DOWNLOAD
filename.ext
/Pn
/In
/Bnnnn
/Annn
The
parts
of
the
command
are
described
below.
DOWNLOAD:
The
root
command.
Starts
the
software
download
process.
If
no
parameters
are
specified
the
default
values
are
used
(see
below)
which
is
equivalent
to
typing
DOWNLOAD
/PI
/I4
/B38.4
/A3F8.
filename.ext:
Selects
the
software
file
to
be
downloaded.
Operating
software
files
end
with
the
extension
.OUT.
If
no
file
is
specified,
the
program
downloads
the
first
file
in
the
working
directory
that
has
the
.OUT
extension.
Distribution
diskettes
include
only
one
software
file,
so
it
is
rare
that
you
would
need
to
use
the
file
name
in
the
download
command.
/Pn:
Specifies
the
COM
port
to
be
used
on
the
PC,
where
n
is
1
through
4.
For
example
/P3
selects
COM3.
If
no
port
is
specified,
COMl
is
used.
/In:
Specifies
the
system
interrupt
request
line
(IRQ)
for
the
COM
port,
where
n
is
1-7.
For
example
/I4
selects
IRQ
4.
If
no
IRQ
is
specified,
IRQ
4
is
used
for
COMl
and
COM3
and
IRQ
3
is
used
for
COM2
and
COM4.
/Bnnnn:
Specifies
the
baud
rate
for
the
COM
port,
where
nnnn
is
1200,4800,9600,
19.2,
or
38.4.
For
example/B
19.2
sets
the
baud
rate
to
19.2
Kbaud.
If
no
baud
rate
is
specified,
38.4
Kbaud
is
used.
/Annn:
Specifies
the
COM
port’s
base
address
in
hexadecimal
notation,
where
each
digit
of
nnn
can
be
0
through
F.
For
example
/A3F8
sets
the
base
address
for
3F8h.
If
no
base
address
is
specified
the
base
addresses
3F8,
2F8,
3E8,
and
2E8
are
used
for
COMl
through
COM4,
respectively.
Software
Downloading
6-3
114
116
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
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HP 4934A Specifications
General
Brand
HP
Model
4934A
Category
Measuring Instruments
Language
English
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