9811 IEEE Programmable Resistance

Time Electronics

Calibration, Test & Measurement

•

1

Ω to 1 MΩ

•

0.01% Accuracy

•

1 Ohm resolution

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IEEE/GPIB/IEC/HPIB

•

Remote and local operation

The 9811 is a programmable resistance/potential

divider, with facilities for full manual

control. This is a particularly useful feature at the system design stage, and during checking

and maintenance periods. The resistance is continuously shown on a 6 digit LCD display

and is set locally by thumbwheel switches. The resistance is tapped to enable the 9811 to

be used as a potential divider if required.

Construction is standard 19” Euroframe with plug-in modules which allow easy access and

improved servicing and maintenance. It can be rack mounted or housed in a free standing

case.

Programming

To set a resistance, the required value in Ohms is transmitted over the IEEE bus, followed

by a carriage return. When used as a ratio-divider, programming should be in hexadecimal

format in order to obtain the full range of division ratios. Hexadecimal programming allows

each resistance bank to be set to a maximum of 15.

The numbers 10 to 15 being

represented by the letters A to F respectively.

All commands require a carriage return or line-feed as a terminator.

The unit can be sent into the local (manual) mode from the IEEE bus. In this mode, the

setting of the front panel switches can be read back. The read back terminator can be

programmed to cope with different types of IEEE controller.

The 9811 can be programmed to execute commands on receipt of IEEE Group Execute

Trigger (G.E.T.)

Commands

R : enter remote mode

L : enter local mode

T : transmit local setting

GI : except G.E.T. commands

Time Electronics, Botany Industrial Est. Tonbridge, Kent. England. TN9 1RH.

Tel: +44 (0)1732 355993 Fax: +44 (0)1732 770312 E-mail: mail@timeelectronics.co.uk

www.timeelectronics.co.uk

V1a 01/01/07