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TECHNICAL MANUAL
FOR
MODEL 66252A
DMM AUTOSWITCH
NOTICE
The contents and information contained in this manual are proprietary to
Guildline Instruments. They are to be used only as a guide to the operation
and maintenance of the equipment with which this manual was issued and
may not be duplicated or transmitted by any means, either in whole or in
part, without the written permission of Guildline Instruments.
TM66252A-A-00
16 December, 2009
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Table of Contents
Summary of Contents for Guildline 66252A
- Page 1 NOTICE The contents and information contained in this manual are proprietary to Guildline Instruments. They are to be used only as a guide to the operation and maintenance of the equipment with which this manual was issued and may not be duplicated or transmitted by any means, either in whole or in part, without the written permission of Guildline Instruments.
- Page 2 TABLE OF CONTENTS INTRODUCTION ....................1-1 INSTALLATION ....................2-1 2.1 Installation of the Bench Top Version …………...………………...………………2-1 2.2 Installation of the Rack Mount Version …………………………………………….2-2 INSTALLATION TESTS ..................3-1 OPERATION ......................4-1 TM66252-A-00 31 August, 2006...
- Page 3 TABLE OF FIGURES FIGURE 1-1: ELECTRICAL SCHEMATIC OF THE AUTOSWITCH ............1-1 FIGURE 2-1: AUTOSWITCH BENCH MOUNT VERSION ................2-1 TM66252-A-00 31 August, 2006...
- Page 4 Agilent 3458 Digital Multimeter resistance ranges. Two versions of the switch are available. The rack mounted version, 66252A-R is designed to be installed within the 6625 cabinet. The bench version, 66252A is designed to rest on the bench top beside the 6625 cabinet.
- Page 5 Section 2 INSTALLATION This section describes the steps for installing the bench top and the rack mounted version of the model 66252A Autoswitch. Installation of the Bench Top Version 2.1.1 Tools Required Model 66252A Autoswitch Screwdriver, slotted (Optional) Jumper for 2 Scanners 2.1.2 Procedure...
- Page 6 Remove 3U blank panel from front of 6625A cabinet, retain screws and washers for installation of 66252A-R. k) Install 66252A-R assembly into 3U hole with screws & washers from 3U blanking panel. l) Install Autoswitch Cables to the 6664C scanner channel A and channel B output terminals.
- Page 7 Section 3 INSTALLATION TESTS Once the DMM Switch option is installed, measurements need to be performed on known resistance ratios to ensure the integrity of the installation. Test Procedure a) Turn the DMM Switch counter clockwise to the “Bridge” position. b) Select Scanner channels for 2 resistance elements of known ratio and individual values.
- Page 8 Section 4 OPERATION This procedure describes methods of automatically or manually calibrating the Agilent 3458 DMM. This procedure may be used with other meters but it is advisable to review the meter manufacturer’s procedure before using either of these methods. Automated Procedure The automated procedure is described in the documentation with Bridgeworks-C 3458A Resistance Calibration Utility available as an extra cost option.
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