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E4418A
HP E4418A User Manual
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Theo
r
y
of Op
erati
on
A5 Daughter
Assembly
HP
EPM-441A/442A Service Guide
4-9
A5 Daughter Assembl
y
The daught
er assemb
ly is lo
aded ve
rticall
y into t
he A2 proces
sor
assembly
. It contains t
wo slotted post conne
ctors. Depending o
n whether
you have
an HP
E
PM-441A
or an
HP
EPM-
442A po
wer meter
, e
ither o
ne
or tw
o of
thes
e co
nnect
ors
are u
sed
res
pecti
vely
for
the
A6 me
asur
emen
t
assembly
(s).
4402serv.book P
age 9 M
onday, Marc
h 11, 2002
11:34 AM
78
80
Table of Contents
Default Chapter
5
Legal Information
5
Equipment Operation
7
Personal Safety Considerations
7
General Safety Considerations
8
Markings
8
IEC 1010-1 Compliance
9
List of Related Publications
10
Sales and Service Offices
11
Returning Your Power Meter for Service
14
About this Guide
15
Table of Contents
17
List of Figures
21
List of Tables
23
Specifications
25
Introduction
26
Power Meter Specifications
27
Meter
27
Accuracy
28
Zero Set Specifications
28
Power Reference
29
Power Meter Supplemental Characteristics
30
Power Reference
30
Measurement Speed
30
Zero Drift of Sensors
31
Measurement Noise
31
Noise Multiplier
31
Power Sensor Specifications
32
Settling Time
33
Settling Time
34
Power Sensor Specifications
36
General Characteristics
37
Rear Panel Connectors
37
Environmental Characteristics
38
General Conditions
38
Operating Environment
38
Storage Conditions
38
General
39
Dimensions
39
Weight
39
Safety
39
Remote Programming
39
Non-Volatile Memory
40
Performance Tests
41
Introduction
42
Equipment Required
43
Required Equipment
43
Performance Test Record
44
Performance Tests
44
Calibration Cycle
44
Test Procedures
44
Zero Test
45
Specification
45
Description
45
Equipment
45
Test Setup
45
Zero Test Setup
45
Procedure
46
Zero Test Results
46
Instrument Accuracy Test
47
Specification
47
Description
47
Equipment
47
Test Setup
47
Instrument Accuracy Test Setup
47
Procedure
48
Instrument Accuracy Results
49
Power Reference Level Test
50
Description
50
Equipment
51
Test Setup
51
Procedure
51
Power Reference Level Test Setup
51
Power Reference Level Result
53
HP E-Series Power Sensor Interface Test
54
Procedure
54
HP E-Series Power Sensor Functional Test
55
Description
55
Equipment
55
Procedure
56
Sensor Functional Test Setup
56
Sensor Functional Test Setup with Attenuator
57
Functional Test Result
57
Performance Test Record
58
Adjustments
59
Introduction
60
Safety Considerations
60
Equipment Required
61
Post-Repair Adjustments
61
Post Repair Adjustments, Tests, and Checks
61
Power Reference Oscillator Frequency Adjustment
62
Description
62
Equipment
62
Procedure
62
Adjustment Setup
62
A2L9 Adjustment Location
63
Power Reference Oscillator Level Adjustment
64
Description
64
Adjustment Setup
64
Equipment
66
Procedure
66
A2R90 Adjustment Location
68
Measurement Uncertainty
69
Display Brightness and Contrast Adjustment
70
Introduction
70
Procedure
70
Theory of Operation
71
Introduction
72
A1 Power Supply
73
A2 Processor Assembly
74
A3 Front Panel Assembly
77
A4 Interface Assembly
78
A5 Daughter Assembly
79
A6 Measurement Assembly
80
Replaceable Parts
85
Introduction
86
Assembly Part Numbers
87
Front Panel Connector Repair
89
Firmware Upgrades
90
Downloading Firmware
90
Assembly and Disassembly Guidelines
91
Removing the Power Meter Cover
91
Removing the A1 Power Supply Assembly
92
Removing the A2 Processor Assembly
93
Removing the A4 Interface Assembly
94
Removing the A5 Daughter or A6 Measurement Assemblies
95
Removing the A7 Fan Assembly
96
Removing the Power Meter Battery (BT1)
97
Removing the A3 Front Panel Assembly
98
Replacing the Front Panel Power Reference Cable Assembly
101
Replacing the Rear Panel Power Sensor Cable Assemblies (Options 002 and 003)
102
Replacing the Rear Panel Power Reference Cable Assembly (Option 003)
104
4
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HP E4418A Specifications
General
Brand
HP
Model
E4418A
Category
Measuring Instruments
Language
English
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