9823

Programmable Multi-Function Calibrator

• 0 – 1kV AC/DC Voltage

• 0 – 10AAC/DC Current

• 10Ω – 10MΩ Resistance

• 10 ppm / Year accuracy

• GPIB interface

• EasyCal 4 Software

10ppm/Year Accuracy

The outstanding accuracy and stability of the 9823 is

achieved by the use of two carefully selected and aged

zeners, averaged to produce a stable master reference.

The zeners are selected by computer from a burn-in rig

where they are temperature cycled and monitored for 5

months to find the optimum operating current for stability

and temperature coefficient. The reference is scaled to

the selected output voltage by matched sets of precision

hermetically sealed resistors. with tracking and tempera-

ture coefficient to better than 0.1 ppm/ºC.

Deviation and Offset

Digital deviation allows the output to be changed by up to

10% in 1 ppm steps. Errors can then be read off the dis-

play directly as a percentage. Offset store enables linear-

ity checking of meters with offset zeros without calcula-

tions

High Voltage Operation

Output voltages greater than 40 volts can only be se-

lected after pressing a safety interlock key. Once selected

there is a programmed 3 second delay, an audible warn-

ing bleep and a continuous flashing warning light on the

front panel.

Front Panel Recalibration

Recalibration from the front panel or over the GPIB bus

ensures fast, accurate recalibration of the 9823. Calibra-

tion can be performed in less than 20 minutes, without the

thermal errors created by removing covers. Calibration

constants are held in non-volatile memory. A simple ‘cal

key’ provides calibration security.

Introduction

GPIB Interface as Standard

The GPIB interface allows the 9823 to be connected to

a PC. The simple high level programming language

gives full control over the 9823 enabling repetitive cali-

bration work to be greatly speeded up. The PC requires

an optionally available GPIB interface card.

Self-Test and Error Detection

The 9823 software constantly monitors the output and

displays error messages on detection of a fault or over-

load condition. A self-test program can also be run to

check that key internal functions are operating correctly

and help with fault diagnosis.

1999999 full scale with 4% over-range

For accurate calibration of DMM’S the ranges of the

9823 have been designed to match the full scales of

most digital multimeters.

Six Wave Forms from 15 Hz to 20 kHz

The waveforms provided extend the capability of the

9823 to checking ‘RMS’ performance of multimeters,

linearity of chart recorders, and amplitude checked on

oscilloscopes.

EasyCal software - ISO 9000 compatible

A suite of programs available from Time Electronics.

Automatic calibration using a standard PC and the

9823 is possible and printed certificates to ISO 9000

standard are produced. A wide range of electrical and

electronic equipment can be calibrated with full details

of each being stored on the PC. Inventory management

is also possible so that instruments/equipment can be

recalled at predetermined intervals. Calibration job con-

trol is also provided.

Time Electronics Limited, Botany Industrial Estate, Tonbridge, Kent. TN9 1RH

Telephone: 01732 355993

Fax: 01732 770312

E-Mail: mail@TimeElectronics.co.uk

Web Page: www.TimeElectronics.co.uk

V6 09/09/03