Escort 3136A Bedienungsanleitung
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50000 COUNT
DUAL DISPLAY MULTIMETER
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Table of Contents
Section 1. Introduction
1-1 Introducing the 50,000 Count Dual Display Multimeter 1
1-2 Features 2
1-3 Options and Accessories 3
1-4 How to use this manual 4
1-5 Safety 5
Section 2. Getting Started
2-1 Introduction 7
2-2 Getting Started 7
2-3 Turning the Meter ON 11
2-4 Selecting Current Input Terminals and 11
Measurement Range
2-5 Using the Pushbuttons 11
2-6 Basic Measurement Examples 12
2-7 Rack Mounting 18
Section 3. Front Panel Operation
3-1 Introduction 19
3-2 Front Panel Operations 19
3-3 Primary and Secondary Displays 20
3-4 Input Terminals 22
3-5 Initialization of Measurement Conditions 23
3-6 Selecting A Measurement Function 23
3-7 Selecting Measurement Range 26
3-8 Selecting Secondary Display 27
3-9 Entering Setup Mode 29
3-10 Selecting Local Operation Mode 31
3-11 Operating Arithmetic Functions 31
3-12 Selecting Trigger Mode 38
Section 4. Measurement Applications Examples
4-1 Introduction 41
4-2 Applications for Using Dual Display 41
4-2-1 Dual Display Operation Examples 42
4-3 Measuring Resistance 45
4-4 Measuring True RMSAC+DC 46
I
Section 5. Calibrating the Meter
5-1 Introduction 47
5-2 Environment Condition 47
5-3 Warm up 47
5-4 Recommended Test Equipment 48
Section 6. RS-232 Remote Operation
6-1 Introduction 49
6-2 RS-232 Interface Overview 49
6-3 RS-232 Interface Parameter Set up 49
6-4 Using Commands 51
6-4-1 Types of Commands 51
6-4-2 Command Syntax 52
6-5 Instructions of Command Sets 53
6-5-1 Key Commands 53
6-5-2 Set Commands 54
6-5-3 Query Commands 59
6-6 Remote Program Examples Using RS-232 interface 65
Section 7. GPIB Remote Operation
7-1 Introduction 71
7-2 Description of the GPIB 71
7-3 GPIB Interface Parameters Setup 71
7-4 Commands Summary 72
7-4-1 Overview of Command Type and Formats 72
7-4-2 Response Message Data Types 73
7-4-3 Status Reporting 73
7-5 Instructions of Command Sets 77
7-5-1 IEEE 488.2 Common Commands 77
7-5-2 SCPI Commands 79
7-5-3 SCPI Commands Summary 87
7-6 Remote Program Examples Using GPIB interface 89
Appendices
A. Specifications 93
B. Maintenance 101
II
Section 1
Introduction
1-1 Introducing the 50,000 Count Dual Display Multimeter
NOTE
1. This operation manual contains information and warning that must
be followed to ensure user operation safety and to retain the meter
safety condition.
Precaution!
TO ENSURE PERSONAL SAFETY AND TO AVOID DAMAGING THE
METER AND THE EQUIPMENT CONNECTED, READ “GETTING
STARTED” IN SECTION 2-2 BEFORE USING THE METER.
The meter is 50,000 count Dual Display Multi-meter. The meter is designed for
bench-top, field service, and system applications with a high
performance/price ratio.
With the RS-232 computer interface (standard), the meter is fully
programmable for use on the RS-232 interface.
With the IEEE-488 computer interface (optional) installed, the meter is fully
programmable for use on IEEE-488.1 interface bus (1978). The meter is also
designed in compliance with supplemental standard IEEE-488.2 (1987).
1
2
1-2 Features
The main features provided by the meter are:
50,000 Count Dual Display
Vacuum-fluorescent Display (VFD)
Low Cost and High Performances
DCV, ACV, DCA, ACA, Frequency, Diode Continuity
DCV Measurement to 1000V, ACV to 750V (Up 1200Vdc, 1000Vac are
measurable)
AC/DC Current Measurements to 10A (Up to 20A is measurable in less
than 20 seconds).
True RMS (AC, AC+DC), 30Hz to 100kHz Measurement Bandwidth.
AC Current Measurement Bandwidth from 30Hz to 20kHz.
Frequency Measurements Up to 500KHz, 0.01 Hz Resolution.
Resistance Measurement Up to 50 M Ω, 10m ΩResolutions.
dBm measurement with variable reference impedance from 2 Ωto 8000Ω.
Auto or Lock Ranging Relative Calculation.
Auto or Lock Ranging Dynamic Recording (MIN/MAX) with elapsed
time.
Compare (Hi/Lo/Pass) function for quick in-tolerance test.
Percentage function transfers the measuring value to proportional
percentage (%) display.
Fast Electronic and Closed-case calibration.
Data Hold to freeze displayed value.
Refresh Hold for difficult measuring place.
External trigger a one-time measurement to get the result as your needs.
RS 232 Interface.
GPIB Interface (Option).
3
1-3 Options and Accessories
At the moment, one option is available for the meter, which option can be
installed at the factory and a field installable retrofit kit option is also
available:
IEEE-488 interface (Optional) provides full programmability. There are
two types of programming commands: IEEE 488.2 Common Commands
and Standard Commands for Programmable Instruments (SCPI). The
SCPI commands used in this device is conformance with the SCPI
Standard Version 1993.0.
Standard accessories come with the meter are:
Power cord
Protective holsters (Front and Rear)
Operation Manual
Test leads (Tip-type probe)
Available optional accessories are listed as below:
Test leads (Lantern-type probe)
Test leads (Tip-type probe)
Insulation piercing clip
RS-232 PC Link software and cable
IEEE-488 Interface
Rack-mount kit (used for single meter)
4
1-4 How to use this manual
This manual is designed to help the user to get a quick start. Though it is not
necessary to read the entire manual to operate the unit effectively, we recommend
the manual to be read thoroughly in order to use the meter to its full advantages.
First scan the Tables of contents to be familiar with the outline of the manual.
Then read “Getting Started” in Section 2-2. Refer to the appropriate section of the
manual as needed. The contents of each section are summarized below.
Section 1. Introduction
Introducing the general information of features, options, accessories, and
operation manual for the 50,000 count Dual Display Multi-meter.
Section 2. Getting Started
Introducing how to prepare the meter for operation and to start taking basic
front panel operations and measurements quickly.
Section 3. Operating the Meter from the Front Panel
Providing a complete description of each operation, which can be performed by
using the pushbuttons on the front panel. All related information for operations
and functions are grouped together.
Section 4. Measurement Application Examples
Describing how to use the meter in more advanced and sophisticated operations
and applications.
Section 5. Calibrating the Meter
Describing the basic information to calibrate the meter if necessary.
Section 6. RS-232 Remote Operation
Describing how to connect the meter to a terminal or a host computer and operate
the meter via RS-232 interface.
Section 7. GPIB Remote Operation (Option)
Describing how to connect the meter to a terminal or a host computer and operate
the meter via GPIB interface.
Appendices
Appendix A: Specifications
Appendix B: Maintenance
1-5. SAFETY
This meter has been designed and tested according to EN61010-1 (IEC1010-1), Safety
Requirements for Electronic Measuring Apparatus. This manual contains information and
warns which must be followed to ensure safe operation and retain the meter in safe
condition. Use of this instrument in a manner not specified herein may impair the
protection provided by the equipment. Some common international electrical symbols used
in this manual are shown below Table:
Table 1-1. International Electrical Symbols
AC - Alternating Current
DC - Direct Current
AC and DC - Alternating and Direct Current
Ground
See Explanation In The Manual
Before using the meter, read the following safety information carefully. In this manual,
"WARNING", is reserved for conditions and actions that pose hazard(s) to the user;
"CAUTION", is reserved for conditions and actions that may damage your meter.
WARNING
TO AVOID ELECTRICAL SHOCK OR OTHER INJURY:
Be sure the meter is in good operating condition and avoid working alone.
Follow all safety procedures for equipment being tested.
Inspect the test leads for damaged insulation or exposed metal. Check test lead
continuity. Damaged leads should be replaced.
This equipment operates from a power source that does not apply more than 250V
rms between the supply conductors or each supply conductor and ground. A
protective ground connection by way of the grounding conductor in the power cord is
essential for safe operation.
This equipment is grounded through the grounding conductor of the power cord. To
avoid electrical shock, plug the power cord into a properly wired receptacle before
connecting to the equipment input or output terminals.
5
6
To avoid explosion, do not operate this product in an explosive atmosphere.
To avoid personal injury, do not remove the cover or panel. Refer servicing to
qualified personnel.
Select the proper function for your measurement.
To avoid electrical shock, use caution when working above 60V dc or 30V ac RMS.
Disconnect the live test lead before disconnecting the common test lead.
Disconnect the power and discharge high-voltage capacitors before testing in Ωand
diode.
When making a current measurement, turn the circuit power off before connecting the
meter in the circuit.
To avoid fire hazard, always use a specified fuse.
Use clamp-on probes when measuring circuits exceeding 10 amps.
When servicing the meter, use only the replacement parts specified.
Do not allow meter to be used if it is damaged or if its safety is impaired.
The meter is safety-certified in compliance with EN61010-1 and EN61010-2-31
(IEC1010-1 & IEC1010-2-31) Installation Category ΙΙI 600V and CAT II 1000V
Pollution Degree 2. In order to maintain its insulation properties, please be sure to use
with the standard or compatible test probes.
CE requirement: Under the influence of R.F field according to standard, the supplied
test leads will pick up induced noise. To have better shielding effect, a short-twisted
lead should be used.
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