Información del equipo:

Datron Instruments 4708 Voltage Source
Fabricante:
Datron Instruments
Modelo: 4708
Fecha: 1988
Categoría: Los instrumentos de medición
Grupo: Voltage Source
Descripción: Autocal Multifunction Standard
Información:
                                    The Datron 4708 Autocal Multifunction Standard is a
high-precision Calibrator which features exceptionally high
stability and full systems capability. It is characterized
by a wide-range coverage of DC Voltage, AC Voltage, DC
Current, AC Current and Resistance functions in a single unit.

The basic instrument consists of a mainframe to which the
various output options may be added.

Option 10 (factory-fitted) provides a DC Voltage function.

Option 20 (factory-fitted) provides an AC Voltage function.

Option 30 (factory-fitted) adds calibration sources of DC
Current, AC Current and Resistance.

The 4708 incorporates a reference module which maintains a
high accuracy specification over the ambient temperature
range of 23°C ± 10°C. A high level of stability is achieved
by use of super-selected reference components and
ultra-stable gain-defining resistors. The ‘Autocal’ feature
ensures that its 24-hour specifications are usable; not
merely figures of merit.

The 4708 uses a microprocessor for control management,
simplifying its use in complex manual operations, such as
calibration of high-quality digital multimeters. The IEEE
488 Interface provides a comprehensive remote programming
capability, allowing programmed calibration of the 4708 itself.

Standard and Optional Facilities
DC Voltage Ranges

By fitting Option 10, the instrument provides DC Voltage
calibration facilities in eight decade ranges from ±100fiV
to ±1000V. 100% overrange is incorporated, except on the
±1000V range (see page 3-3), when the output is limited to
1100V.
AC Voltage Ranges

By fitting Option 20, the instrument provides AC Voltage
calibration facilities in seven decade ranges from lmV to
1000V. 100% overrange is incorporated, except on the 1000V
range (see page 3-3), when the output is limited to 1100V.
DC Current Ranges

By fitting Option 30, in conjunction with Option 10, the
instrument can be used to calibrate DC Current in five
decade ranges from 100)1 A to 1 A. The Datron Model 4600 may
be used to extend DC Currents to 11 A.
AC Current Ranges

By fitting Option 30, in conjunction with Option 20, the
instrument can be used to calibrate AC Current in five
decade ranges from IOOjiA to 1 A. The Datron Model 4600 may
be used to extend AC Currents to 11 A.
Resistance

By fitting Option 30, in conjunction with Option 10, the
instrument can be used to calibrate resistance in eight
decade ranges from 10 ohm to 100M ohm.
Frequency

The output frequency of the 4708 extends from 10Hz to 1MHz
in five overlapping decade ranges, at a resolution of 1% of
nominal Frequency Range. Any five frequency values within
the range of the instrument can be stored in volatile
memory. For higher accuracy, five ‘Spot Calibrated’
frequency values per Output Range can be recalled from
non-volatile memory storage.

Autocal

All Datron AUTOCAL instruments are designed to make the
removal of the covers for calibration unnecessary, as full
routine calibration of all ranges and functions can be
carried out from the front panel or over the IEEE 488 bus.

Accidental or unauthorized use of the calibration routine is
prevented by a key operated switch on the instrument rear
panel. The procedure for calibrating this instrument is
contained in Section 8.
Resolution and Accuracy

The maximum resolution is 7.5 digits with a facility for
displaying the specified accuracy of any output voltage. The
4708 specifications are shown in Section 6.
Resolution and Accuracy

The maximum resolution is 6.5 digits with a facility for
displaying the specified accuracy of any output voltage. The
4708 specifications are shown in Section 6.
Resolution and Accuracy

The maximum resolution is 6.5 digits with a facility for
displaying the specified accuracy of output current. The
4708 specifications are shown in Section 6.
Resolution and Accuracy

The maximum resolution is 6.5 digits with a facility for
displaying the specified accuracy of output current. The
4708 specifications are shown in Section 6.
Resolution and Accuracy

The maximum resolution is 7.5 digits with a facility for
displaying the specified accuracy of any output resistance.
The 4708 specifications are shown in Section 6.
Output Deviation

A user may deviate the output voltage from the output
display value by introducing a gain ‘Error’ within the
general range ±10%. Additionally, for DC functions, the
output may be ‘offset’ by up to ±2% of the range in use, or
200|_iV, whichever is greater.

Remote Sense

The specified output voltage may be sensed at the load,
using 4-wire connections. Remote or Local Sense is
selectable from the front panel.

Remote Guard

This facility allows the instrument’s internal guard shields
to be externally connected.

Estos manuales están disponibles para el equipo anterior:

Tipo de manual: Manual del usuario Datron-9551-Manual-Page-1-Picture
Páginas: 150
Tamaño: 50.10 Mbytes (52529066 Bytes)
Idioma Inglés
Revisión: Issue 1
Manual-/ número de identificación: 50245
Fecha: 01 diciembre 1988
Calidad: Documento Scaned, todo legible.
Fecha de carga:
MD5: c080f5ab37abef33622f9ce6f66d0897
Descargas: 95 desde 24 septiembre 2017
Información:
This handbook has been designed for you to get the best use
from your 4708. The sections are put together in a sequence
flowing logically from one subject to another, so that
understanding increases as the text is read naturally from
front to rear. Here is an alternative (explanatory !)
version of the Section Titles:

Section 1:	Introduction and a brief account of the internal
design.

Section 2:	Physical connections and mounting — getting it
installed.

Section 3:	A brief scan of the available controls — where
they are and what they do.

Section 4:	The correct procedures for making the 4708
perform for you.

Section 5:	How your 4708 can operate within an IEEE 488
system — the device dependent codes you will need to use.

Section 6:	Specifications — what accuracy you can expect to
get from your Instrument.

Section 7:	Verification that your 4708 matches the high
specification it had when it left the factory.

Section 8: How to restore your 4708 to its original
specification after It has suffered the ravages of time and
temperature.
Datron-9551-Manual-Page-1-Picture


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