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7451A
ADCMT 7451A User Manual
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7451A/7461A/7461P Digital Multimeter Operation Manual
6.7.2 O
utput Da
ta Format
6-18
Sub header
Description
Priority
O
Error in
formation
Range
over
1
O
Calculation
Scaling error
1
E
Err D (dB/dBm calculation error)
2
H
Calculation result infor-
mation
Comparator result
HIGH
3
PG
O
3
LL
O
W
3
M
MAX data
4
IM
I
N
d
a
t
a
4
Bd
B
d
a
t
a
5
Wd
B
m
d
a
t
a
5
S
Scaling calculation
data
6
N
NULL calculation data
7
_
None of the abo
ve
8
117
119
Table of Contents
Default Chapter
5
Table of Contents
5
1 Introduction
13
Contents of this Manual
13
Product Overview
14
2 Precautions
15
If a Fault Occurs
15
Removing the Case
15
Power Fuse
15
Electromagnetic Interference
15
Note When Turning on the Power
16
3 Setup
17
Inspection on Delivery
17
Standard Accessories
18
Installation Environment
19
Protecting against Electrostatic Discharge
20
Electrostatic Countermeasures for the Work Floor and Human Body
20
Electrostatic Countermeasures for the Workbench
20
ESD Countermeasures
20
Accessories
21
Input Cable
21
Caution When Connecting Peripherals
23
Power Requirements
24
Checking the Power Supply Voltage
24
Indication of the Set Power Supply Voltage
24
Relation Table between AC Power Supply Voltage and Indication of Set Power Supply Voltage
24
3.4.2 Changing the Power Supply Voltage
25
Connecting the Power Cable
27
4 Quick Start
29
Panel Description
29
Front Panel Description
29
Display Section Description
30
Display Section
30
Power Switch
30
Measurement Function Keys
30
Measurement Range Selection Keys
31
Sampling Selection Keys
31
Calculation Selection Keys
31
MENU/ENTER Key
31
SHIFT/EXIT/LOCAL Key
32
Front Input Section for Measurement
32
CAT II (Marking)
32
Rear Panel Description
33
Basic Operation
34
Measurement Functions
34
DC Voltage Measurement (DCV)
34
Maximum Allowable Applied Voltage (DCV)
34
Range and Input Impedance (DCV)
34
DC Voltage Measurement (DCV-Bch)
35
Maximum Allowable Applied Voltage (DCV-Bch)
35
Range and Input Impedance
35
AC Voltage Measurement (ACV and ACV(AC+DC))
36
Selecting the AC Filter
36
Maximum Allowable Applied Voltage (ACV and ACV(AC+DC))
36
Resistance Measurement (2W, 4W, LP-2W, and LP-4W)
37
Maximum Allowable Applied Voltage (2W, 4W, LP-2W, LP-4W)
38
DC Current Measurement (DCI)
39
AC Current Measurement (ACI and ACI(AC+DC))
40
Selecting the AC Filter
40
Diode Measurement
43
Maximum Allowable Applied Voltage (FREQ)
44
Display Resolution
45
Setting the Measurement Range
47
Setting the Sampling Rate
47
Sampling Rate, Measurement Speed, and Auto-Zero
47
Sampling Rate and Display Digits
48
5 Menu Operation and Function Description
49
Menu
49
How to Navigate the Menus
49
Menu Operation
49
Menu Operation Key and Function
51
Menu List
52
Measurement Functions and Parameters
57
DC Voltage Measurement (DCV)
57
DC Voltage Measurement (DCV-Bch)
57
Continuity Measurement
58
Temperature Measurement
58
Measurement Range and Auto-Range
59
Measurement Function and Range Structure
59
Measurement Range
59
Auto-Range
60
Auto-Zero Operation
61
Performing Auto-Zero
61
Display Mode Setting
62
Display Digit Setting
62
Sampling Operation
63
Measurement Sequence
63
Sampling Interval (SI) and Integration Time (IT) Settings
64
Setting Range and Resolution of the Integration Time (IT)
64
Setting Range of Sampling Interval (SI)
65
Integration Time and Minimum Measurement Time
65
Sampling Count Setting
66
Trigger Function
67
Trigger Model
67
Trigger System Operation
68
Trigger Source Selection
69
Trigger Delay (Td)
71
Trigger Delay Time, Setting Resolution, and Accuracy
71
Trigger Count Setting
72
Level Trigger and Delta Trigger
72
Level Trigger
73
Delta Trigger
74
Delta Trigger Detection Pattern
75
Pre-Trigger Operation
76
Calculation Functions
77
Calculation System Diagram
78
NULL Calculation
79
Smoothing Calculation
80
Scaling Calculation
83
Db and Dbm Calculation
85
Comparator Calculation
87
MAX/MIN Calculation
90
Statistical Calculation
92
5.10 Saving and Loading the Measurement Condition Settings
94
Auto-Loading When Turning on the Power
94
Saving the Setting Parameters
94
Loading the Setting Parameters
94
5.11 Storing and Recalling the Measurement Data
95
Memory Store
95
Memory Recall
95
Memory Clear
95
5.12 System Settings
96
Selecting the Input Terminal
96
Disabling Functions
96
Relationship According to Disabling the Function
97
Front Panel Disabling Function
98
Error Queue
100
6 How to Use the Interface
101
Interface Selection
101
Response to the *IDN? Command (7451A/61A Only)
101
Gpib
103
Overview
103
Interface Functions
103
6.2.2 Precautions in Use of GPIB
104
Standard Bus Cable
104
GPIB Setting
105
Usb
107
Overview
107
USB Specifications
107
Setting up the USB Port
107
Connecting to a Personal Computer
107
Usbid Setting
108
Control Signal
108
External Trigger Terminal (TRIGGER IN)
108
Simple Equivalent Circuit of Trigger Input Terminal
108
Measurement Complete Signal Terminal (COMPLETE OUT)
109
Simple Equivalent Circuit of Complete Signal Output Terminal
109
6.5 Comparator Output
112
Optical Semiconductor Relay Contact and TTL Logical Output (A)
112
Optical Semiconductor Relay Contact and TTL Logical Output (B)
112
Digital Output (7461P Only)
113
ADC Commands
113
Signal Output Pin
114
Command Reference
115
Selecting the Command Language
115
Compatibility
115
Output Data Format
116
6.7.3 ADC Command Reference
122
SCPI Command Reference
135
SCPI Command Reference Syntax
135
SCPI Commands
135
Remote Command
137
Status Register Structure
145
Status Register Structure
146
Status Register Structure
147
Status Byte Register Structure
148
Status Byte Register (STB)
149
Standard Event Status Register (SESR)
151
Measurement Event Register (MER)
152
Questionable Event Register (QER)
153
Operation Event Register (OER)
154
Sample Programs (Command Used in ADC CORPORATION)
155
Sample Programs (SCPI Command)
159
7 Specifications
163
DC Voltage Measurement (DCV)
163
AC Voltage Measurement (ACV, ACV(AC+DC))
165
Resistance Measurement (2W, LP-2W, 4W, LP-4W)
169
DC Current Measurement (DCI)
172
AC Current Measurement (ACI, ACI(AC+DC))
173
Frequency Measurement (FREQ)
176
Diode Measurement
177
Continuity Measurement
178
Temperature Measurement (TEMP-2W, TEMP-3W, TEMP-4W)
178
Measurement Time and Display Digits
179
7.1.11 Calculation Functions
181
Interface Specifications
182
General Specifications
183
Options
184
8 Maintenance
185
Replacing Fuses
185
Replacing a Power Fuse
186
Replacing a Protection Fuse
186
Input Terminal Protection Fuse
186
Cleaning
187
Cleaning the Outside
187
Cleaning Others
187
Calibration
188
Preparing for Calibration
188
Calibration Standards
188
Calibration Point
189
Calibration Procedure
192
Replacing Parts with Limited Life
195
Product Disposal and Recycle
196
Storage
198
Transportation
198
Notes Regarding Repair, Replacement, and Periodic Calibration
198
Contacting ADC CORPORATION for Repair or Calibration
198
Address and Phone Number
198
System Recovery Procedure
199
8.10 Self-Test
203
Display and Key Tests
203
8.11 Error Message List
205
Dimensional Outline Drawing
209
Alphabetical Index
211
4
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ADCMT 7451A Specifications
General
Brand
ADCMT
Model
7451A
Category
Multimeter
Language
English
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