Fluke 57AN Kalibrator
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Model:
57AN
Data:
2004
Kategoria:
Grupa:
Opis:
System Calibrator
Informacja
The Fluke Model 57LFC System Calibrator (hereafter called
the Calibrator) is a precise
instrument that calibrates a wide variety of electrical
measuring instruments. This
Calibrator maintains a high accuracy over a wide ambient
temperature range, and is able
to test instruments in harsh environments, eliminating the
restriction of calibrating only in
a temperature-controlled standards laboratory. With a 57LFC
you can calibrate precision
multimeters that measure ac or dc voltage, ac or dc current,
and resistance. The Calibrator
operates in a similar manner to the 57XXA series calibrators.
Specifications are provided at the end of this chapter. The
Calibrator is a fullyprogrammable
precision source of the following:
• DC voltage to 220 V.
• AC voltage to 220 V rms, with output available from 10 Hz
to 100 kHz.
• AC and DC current to 2.2 A, with AC output available from
10 Hz to 20 kHz.
• Resistance in values from 0 Ω to 19 MΩ in 1 and 1.9x.
Features of the Calibrator include the following:
• Automatic meter error calculation obtained through using a
simple remote adjust.
• Programmable entry limits used for restricting the levels
that can be remotely keyed
into the Calibrator, preventing access to levels that may be
harmful to equipment or
personnel.
• Real-time clock and calendar.
• Offset and scaling modes that simplify linearity testing
of multimeters.
• Standard IEEE-488 (GPIB) Interface, complying with
ANSI/IEEE Standards 488.1-
1987 and 488.2-1987.
• Internal self-testing and diagnostics of analog and
digital functions.
• Status LEDs on front panel to indicate standby (yellow),
operate (green), high
voltage (red), and fault (red and yellow).
Typ ręczny:
Instrukcja serwisowa
Strony:
208
Rozmiar:
4.63 Mbytes (4853336 Bytes)
Język:
english
Rewizja:
Ręczny ID:
Data:
Jakość:
Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data przesłania:
2014 11 29
MD5:
171d891cbaf195552a2fef5e40509212
Pobrane:
1370
Informacja
1 Introduction and Specifications
... 1-1
Introduction ...
1-3
Service Information
...
1-3
Accessories
...
1-4
Low Thermal EMF Test
Leads ...
1-4
Rack Mount Kit
...
1-4
Shielded IEEE-488 Cables (Y8021, Y8022, and Y8023)
... 1-4
Contacting
Fluke ...
1-5
Specifications ...
1-6
General
Specifications ...
1-6
Accuracy Specifications
...
1-7
DC Voltage Accuracy
...
1-7
DC Current
Accuracy ...
1-7
Resistance Accuracy
...
1-7
AC Voltage Accuracy
...
1-8
AC Voltage Distortion
...
1-9
AC Current
Accuracy ...
1-10
AC Current
Distortion ...
1-11
2 Theory of Operation
...
2-1
Introduction ...
2-3
A1 LED
PCA ...
2-5
A3 Motherboard
PCA ...
2-5
Relay Control and Switch
Matrix ...
2-5
LED Control and Output Cables
...
2-10
Signal Buses
...
2-10
Low Volt Buffer
...
2-10
In-guard Power Supplies
...
2-10
Outguard Power Supplies
...
2-11
Miscellaneous Circuits
...
2-11
Troubleshooting Test
Points ...
2-12
List of Fuses
...
2-13
A5 Ohms PCA
...
2-13
Precision Resistor
Networks ...
2-14
Relay Switch Matrix and
Control ...
2-14
Other Control Circuits
...
2-26
Guard Circuits
...
2-26
Compensation Circuits
...
2-27
Monitor ...
2-27
Diagnostics ...
2-29
A6 Digital Synthesis PCA
...
2-33
Precision, Dual Tracking, +/-7 V
References ... 2-33
Precision, 28bit, PWM, Dual DAC’s
... 2-33
DC Voltage
Operation ...
2-34
DDS Waveform Generation
...
2-34
AC Voltage
Operation ...
2-35
DC Current Operation
...
2-35
AC Current Operation
...
2-35
Thermocouple Temperature
Measurement ...
2-35
Iso-thermal Block Reference Junction Temperature Measurement
... 2-36
Thermocouple Voltage Measurement:
... 2-36
Thermocouple Temperature
Simulation ...
2-36
Analog to Digital Converter
...
2-36
Fault Detection
...
2-36
Digital
Control ...
2-37
A7 Current
PCA ...
2-37
Detailed Hardware Description of DC/AC
Current ... 2-40
Low Current Output
Amplifier ...
2-40
Mid-Current Output Amplifier
...
2-41
High Current Output Amplifier
...
2-42
High Current Amplifier Power Supplies (Mongo Supplies)
... 2-43
A8 High Voltage PCA
...
2-44
Detailed Hardware Description of the 22 V Amplifier
... 2-46
Detailed Description of the 220 V Amplifier
... 2-47
Detailed Hardware Description of the High Voltage
Regulator ... 2-49
Heat Sink Temperature Measurement
... 2-51
Digital Interface and
Control ...
2-51
A9 Out-Guard CPU
PCA ...
2-52
Real Time Clock Memory
...
2-52
IEEE-488
Interface ...
2-52
3 Calibration and
Verification ...
3-1
Calibration
...
3-3
Procedure
Architecture ...
3-3
ZERO
...
3-3
MAIN ...
3-3
DIAG ...
3-3
Calibration Steps
...
3-3
RUN
...
3-4
Instruction Step (INS)
...
3-4
Reference Step (REF)
...
3-4
NOT
...
3-4
Verification
Tests ...
3-5
Test
Equipment ...
3-5
Calibrator Configuration and
Pre-check ...
3-6
DC Voltage Test
...
3-7
AC Voltage Tests
...
3-9
AC Voltage Accuracy Test
...
3-9
Frequency Accuracy
Test ...
3-10
DC Current Test
...
3-14
AC Current Test
...
3-15
Current Output Compliance
Test ...
3-17
Voltage Output Compliance Test
...
3-17
Harmonic Test Levels for AC
Volts ...
3-19
Harmonic AC Current Test
...
3-21
External
Trigger ...
3-21
Verification Test Check
List ...
3-22
4
Maintenance ...
4-1
Introduction ...
4-3
Replacing the
Fuse ...
4-3
Cleaning the Air Filter
...
4-4
Replacing PCA Modules
...
4-6
Cleaning the Exterior
...
4-7
5 List of Replaceable
Parts ...
5-1
Introduction ...
5-3
How to Obtain
Parts ...
5-3
Service Centers
...
5-4
Parts
Lists ...
5-4
6 Schematic Diagrams
...
6-1