3200-PCS2B Manual - Krohn
Contents
1. Input Specifications Input Voltages 0 to 11 Vdc or 0 to 11 Vac rms Input Impedance 10 kOhms all ranges AC Band Width 40 Hz to 1 kHz 2 win man 3200 PCS2B 1 5 0 1 5 1 1 5 2 1 5 3 1 5 4 1 5 5 1 5 6 1 5 7 1 5 8 1 5 9 1 5 10 1 6 0 1 6 1 Output Specifications Ranges 10 A 1A 100 mA 10 mA 1 mA Resolution 10 uA 1 pA 100 nA 10 nA 1 nA Limited by the resolution of the voltage calibrator Accuracy AC 0 05 of setting 0 01 of range 20 uA DC 0 01 of setting 0 01 of range 10 uA Compliance Voltage 1 mA to 1 A Ranges 5 Vdc or peak ac 10 Amp Range 1 5 Vde or peak ac Load Regulation non additive 1 mA 10 mA 100 mA ranges 0 02 1 Amp 10 Amp ranges 0 02 Line Regulation non additive 0 0005 for 10 line change Stability DC mode 0 001 of range AC mode 0 005 of range Isolation Floating Output Limited only by the isolation of the driving voltage source Distortion 50 Hz to 1 kHz 1 mA to 1A Ranges lt 0 1 10 Ampere Ranges lt 0 5 Added to the distortion of the AC voltage calibrator Ripple amp Noise rms non additive in band pass 0 1 Hz to 100 kHz bm IEEE 488 Specifications PCS 2B ONLY The Model PCS 2B may be programmed over the IEEE488 Interface Bus The interface functions contained in this unit are SHO AH1 TO L2 SRO RLO PPO DCO DTO CO El 3 win man 3200 PCS2B 2 2 0 2 2 12. 2 2 2 2 2 3 SECTION II INSTALLATION Mounting The 3200 PCS 2B is designed for mounting in a standard 19 rack It is recommended that nylon washers be placed under the rack mounting screws to prevent scratching the mounting ears A two position slide switch is mounted on the rear panel which is used to set the line voltage requirements to 115 Vac or 230 Vac Make sure this switch is in the proper position for your line power prior to turning the instrument on for the first time Mating Connectors amp cables The instrument is supplied with a mating AC power cord Part number CABO08 IEEE 488 Connector PCS 2B only A one or two meter IEEE STD 488 cable may be obtained from Krohn Hite Corp Part Number CABO11 for one meter amp CABO10 for two meters 4 win man 3200 PCS2B 3 0 0 3 2 0 3 2 1 3 2 2 3 2 3 3 2 4 3 2 5 SECTION Iil OPERATION OF THE INSTRUMENT General The model 3200 PCS 2B is a voltage to current amplifier which requires only a driving source to generate output currents to 10 amperes Operation is simple and straight forward with a few reasonable precautions to prevent damage to equipment under test Interconnections The 3200 PCS 2B should be plugged into the AC line with the power switch OFF The shorting bar supplied with the unit should be on the output terminals NOTE Open Circuit Compliance Voltage Is 7 5 Volts The load may be connected to the output terminals The connections shou
3. SERVICE REQUEST AND AUTHORIZATION WARRANTY SERVICE Instruments may be returned only on prior authorization Please obtain a RETURN AUTHORIZATION NUMBER either directly from the factory or from an authorized Krohn Hite Representative See General Information below CHARGEABLE REPAIRS If requested an estimate of charges will be submitted prior to repairs We suggest that you request a RETURN AUTHORIZATION NUMBER to facilitate handling GENERAL INFORMATION A Please provide the following information in order to expedite the repair 1 Indicate Model 2 Serial Number 3 Complete description of the trouble Symptoms measurements taken equipment used lash up procedures attempted repairs suspected location of failure and any other pertinent information B Freight Charges must be PREPAID C The RETURN AUTHORIZATION NUMBER should be noted on your documentation D See Packing Suggestions next page iii win man 3200 PCS2B PACKING SUGGESTION Although your Krohn Hite instrument is built for laboratory production environment and some field environment it is NOT ruggedized Therefore 1 Be sure the carton is STRONG enough to carry the weight of the instrument e g use double wall corrugation 2 Be sure the carton is LARGE enough to allow for sufficient packing material e g at least 2 inches all around the instrument The packing material should be able to be compressed and then return to its approximate original volu
4. instrument will also go to its Listener Idle State when in the Local Mode DATA BYTE STRING FORMAT In general the PCS 2B is programmed with a single character data byte string ATN must be FALSE on these bytes RANGE CHARACTER FUNCTION CODES 0 1mA 1 10mA 2 100mA 3 1A 4 10A The range will change immediately upon receipt of the new Range Byte NOTE Check your user s manual for permissible String labels Some labels are reserved by the operating system or permit only single character definitions 3 4 10 Lab Windows Driver available upon request 8 win man 3200 PCS2B 3 5 0 Sample Programs PCS 2B 3 5 1 The following sample programs are intended as guides to help you program this calibrator 1 The PCS 2B looks for 1 byte at a time and any additional bytes sent can cause errors 2 Some software used to communicate between the host computer and the IEEE interface can generate and send unseen bytes which will be interpreted by the 3200 PCS 2B as command bytes 3 Sending an UNLISTEN command after each command string will reset the PCS 2B S internal counter so that a LISTEN command followed by the 1 byte command string will set the unit to a new range 3 5 2 In the following examples The Interface is IEEE 488 GP IB The Unit Address is BINARY 5 with the dip switch set akp fs e bh 9 win man 3200 PCS2B 3 5 3 Sample Program Hewlett Packard Model 9825 The Following Sample Programs Are Intended as Guides t
5. HE BUS TO PCS 2B 130 PRINT PRINT INPUT TO PCS 2B ON THE 488 BUS IS A A A 140 OUTPUT 705 USING K A 150 PRINT INPUT COMPLETE PRINT PRINT 160 PRINT TO ENTER MORE DATA PRESS SPACE BAR PRINT 170 GETX IFX THEN160 180 GOTO70 NOTE line 170 705 device address a setting e g 1 please consult hp user manual 11 win man 3200 PCS2B
6. Model 3200 PCS 2B Manual and Remote Controlled Pcs 2B IEEE 488 Programmable AC DC Current Standard Calibrator KROHN HITE CORPORATION Operating Manual This page intentionally left blank 3200 PCS2 B OPERATORS MANUAL Serial No win man 3200 PCS2B MODEL 3200 PCS2 B OPERATORS MANUAL Copyright 1999 Krohn Hite Corporation 15 Jonathan Drive Unit 4 Brockton Massachusetts 02301 E mail Info krohn hite com www krohn hite com All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Krohn Hite Corporation Printed in U S A Version 4 20 Revised June 2000 Information furnished in this manual is believed to be accurate and reliable However no responsibility is assumed by Krohn Hite Corporation for its use nor for any infringements of patents or other rights of third parties which may result from its use win man 3200 PCS2B This page intentionally left blank SECTION i ii iii iv I 1 1 0 1 2 0 1 3 0 1 4 0 1 5 0 1 6 0 HI 2 1 0 2 2 0 HI 3 1 0 3 2 0 3 3 0 3 4 0 3 5 0 IV 4 1 0 4 2 0 4 3 0 4 4 0 4 5 0 5 1 0 5 2 0 5 3 0 5 4 0 VI 6 1 0 NOTE TABLE OF CONTENTS TITLE List of Drawings Limited Warranty Factory Service Request amp Authorization Packing Suggestions DESC
7. RIPTION AND SPECIFICATIONS General Description Application General Specifications Input Specifications Output Specifications General Computer Interface Specifications INSTALLATION Mounting Mating Connectors amp cables OPERATION OF THE INSTRUMENT General Interconnections Special Operating Considerations Programming via the IEEE 488 GPIB Bus Sample Programs THEORY OF OPERATION ei Introduction Power Supply Control Board Digital Circuitry Analog Circuitry CALIBRATION P A Idle Current Adjustment Amplifier Offset Adjustment Load Regulation Calibration Output Current Calibration PARTS LIST Replacement Parts for 3200 PCS 2B Applicable to Model PCS 2B only Errata and addendum if any will appear in the back of this manual win man 3200 PCS2B 3200 PCS 2B MANUAL LIST OF DRAWINGS DESCRIPTION DRAWING Block Diagram A 4714A Control Board A 4076A Power Supply A 4571C Power Supply Components A 4574A Analog Circuitry B 4572C Digital Circuitry PCS 2B C 4573B Digital Circuitry 3200 B 4603B Load Regulation Calibration Layout A 4125B Calibration amp Test Point Layout B 4712D Applicable to Model PCS 2B ONLY ul win man 3200 PCS2B LIMITED WARRANTY The Krohn Hite Corporation warrants to the original purchaser each instrument manufactured by them to be free from defects in material and workmanship This warranty is limited to servicing repairing and or replacing any instrument or pa
8. he output to the correct level When the Model PCS 2B is first placed into remote operation the range data must be sent over the bus before the instrument will put out a current The range is selected by sending over the numeric data as a single byte string representing the range byte O ImA 1 10mA 2 100mA 3 1A 4 10A 5 9 STANDBY Setting the instrument s LISTEN ADDRESS The PCS 2B is a LISTEN ONLY instrument Its LISTEN ADDRESS is set with a DIP SWITCH located on the mother board Use switches 1 through 5 They are arranged in a BINARY CODE SW1 BIN 1 SW2 BIN 2 SW3 BIN 4 SW4 BIN 8 SW5 BIN 16 ON TRUE OFF FALSE Binary numbers 0 through 30 are acceptable Do not set all 5 switches to ON Interface Messages The PCS 2B will respond to the following INTERFACE MESSAGES MLA MY LISTEN ADDRESS Upon receipt of this message the instrument will enter its Listener Active State and be ready to accept a string of data bytes ATN must be true 7 win man 3200 PCS2B 3 4 9 UNL UNLISTEN Upon receipt of this message the instrument will enter its Listener Idle State and will not listen to any subsequent data byte strings ATN must be true IFC INTERFACE CLEAR Upon receipt of this command the instrument will enter its Listener Idle State POWER ON CLEAR At POWER ON and Remote Mode the instrument will be in the Listener Idle State and its analog output will be 0 The
9. ld be made to the inside portion of the five way binding post This serves two purposes it permits removal of the shorting bar when desired or its reinsertion also a more secure and electrically low ohmic connection may be made reducing the IR drop at the binding post This is critical at the high current levels where unnecessary IR drops reduce the available compliance voltage at the load Select the desired range with the five position range switch Connect suitable AC or DC voltage source to the input terminals Select the desired input voltage to deliver the required output current The output current and input voltage required may be derived as follows 7 Vinpur RANGE 1 OUT dQ 10 x Laie weur Rance O NOTE the Maximum Input Voltage Is 10 Vdc or rms ac 5 win man 3200 PCS2B 3 2 6 3 3 0 3 3 1 3 3 2 3 3 3 3 3 4 Turn on Model 3200 PCS 2B When the overload light extinguishes the shorting plug on the output terminals may be removed Ifthe overload light comes on again check load and output connections The load may be wrong for the current being called for E compliance LMAX G OUT 3 Special Operating Considerations Reasonable care should be exercised in the selection of wire size used to connect high current loads to the 3200 PCS 2B A choice of size with a high IR drop or a poor connection at the 3200 PCS 2B or the load will limit the compliance voltage available at the load Accurate mea
10. me 3 For better handling the shipment should always be by AIR FREIGHT except for short distances You might use either UPS blue label or common air freight carrier second day air Please do not bounce it across the country in a truck It may not hurt it but it certainly is not going to do a laboratory instrument much good 4 QUESTIONS Just contact us We will be pleased to help you iv win man 3200 PCS2B 1 2 0 SECTION I DESCRIPTION AND SPECIFICATIONS General Description This high current calibrator is an accurate voltage to current amplifier or transconductance amplifier The application of a precise voltage to the input terminals produces a proportional current into any load within the compliance range of the instrument The input voltage can be AC or DC up to 1 kHz The unit is laboratory calibrated with instruments and load resistors traceable to US NATIONAL INSTITUTE OF STANDARDS amp TECHNOLOGY The circuitry is solid state Derated components are used throughout to minimize temperature effects The input is protected against over voltage and has a high output impedance The models 3200 and PCS 2B are equipped for rack mounting in a standard 19 inch rack It is completely enclosed in dust covers and therefore suitable for bench top use Tilt bale is available on request The instrument has been designed to be easily transported from one location to another and will be within operational specifications within o
11. ne minute after power is applied The unit may be permanently mounted in a standard 19 rack and requires only 5 of space Applications Direct calibration of watt meters with applicable voltage standard meter shunts ac amp dc current meters current to voltage transducers current to pneumatic transducers dvms dmms and relay coil current testing 1 win man 3200 PCS2B 1 3 0 1 3 1 1 3 2 1 3 3 1 3 4 1 3 5 1 3 6 13 7 1 4 0 1 4 1 1 4 2 1 4 3 General Specifications Power Requirement selectable 115 or 220 Vac 10 50 60 Hz 150 W Temperature Calibration 23 C 21 C Nominal Operating 20 C to 30 C Safe Operation 0 Cto 55 C Storage 20 C to 60 C Temperature Coefficient 50 ppm C 10A amp 1A Ranges 10 ppm C 100 10 amp 1 mA Ranges Temperature coefficient is an adder to uncertainty specification that does not apply unless operating more than 5 C from the calibration temperature Weight 23 Lbs 10 44 Kg Shipping Weight USA 25 Lbs 11 35 Kg Dimensions 5 22H x 17W x 15D inches 12 25 x 43 18 x 38 1 cm Rack Mountable 5 22H x 19W x 16D Inches 12 25 X 48 26 X 40 64 cm Protection A front panel lamp illuminates to indicate when the compliance voltage has been exceeded or when a malfunction has occurred Calibration Cycle One Year Certification A Certificate of Compliance traceable to the U S National Institute of Standards and Technology is supplied
12. o Help You Program This Calibrator In The Following Example The Language Is Basic The Interface is IEEE 488 GP IB The Unit Address is BINARY 5 with the dip switch set uf2 a ja fs e r 10 REM MANUAL INPUT PROGRAM FOR PCS 2B 50 PRINT CLR HOME 60 PRINT PRINT 70 PRINT ENTER RANGE PRINT 0 FOR 1mA PRINT 1 FOR 10mA 80 PRINT 2 FOR 100mA 90 PRINT 3 FOR 1A PRINT 4 FOR 10A 100 INPUT R IF LEN R lt gt 1 GOTOS0 110 PRINT CLR HOME PRINTEDS 120 A R 130 REM A IS DATA MESSAGE SENT ON THE BUS TO PCS 2B 140 PRINT PRINT INPUT TO PCS 2B ON THE BUS IS AS A A 150 T CHR 13 160 OPENS 5 170 OUTPUT 705 USING K A 180 CLOSES 190 PRINT INPUT COMPLETE PRINT PRINT 200 PRINT TO ENTER MORE DATA PRESS SPACE BAR PRINT 210 GETX IFX THEN 210 220 GOTO70 NOTE line 170 705 device address a setting e g 1 please consult hp user manual 10 win man 3200 PCS2B 3 5 4 Sample Programs Hewlett Packard Model 85 In The Following Example The Language Is Basic The Interface is IEEE 488 GP IB The Unit Address is BINARY 5 with the dip switch set Eee e fs e r 10 REM MANUAL INPUT PROGRAM FOR PCS 2B 20 PRINT CLR HOME 60 PRINT PRINT 70 PRINT ENTER RANGE PRINT 0 FOR I1mA PRINT 1 FOR 10mA PRINT 2 FOR 100mA 80 PRINT 3 FOR 1A PRINT 4 FOR 10A 90 INPUT R IF LEN R lt gt 1 GOTOS0 100 PRINT CLR HOME PRINT 110 A R 120 REM A IS DATA MESSAGE SENT ON T
13. rt thereof returned to the Krohn Hite factory for that purpose in accordance with the instructions set forth below and furthermore to repair or replace all materials except tubes fuses transistors and other semiconductor devices which shall within ONE YEAR of shipment to the original purchaser be returned to the Krohn Hite factory and upon examination be deemed defective Krohn Hite instruments may not be returned to the factory under the terms of this warranty without the prior authorization of the Krohn Hite Service Department All instruments returned to Krohn Hite for service hereunder should be carefully packed and shipped All transportation charges shall be paid by the purchaser Krohn Hite reserves the right to discontinue instruments without notice and to make changes to any instrument at any time without incurring any obligation to so modify instruments previously sold This warranty is expressly in lieu of all other obligations or liabilities on the part of Krohn Hite No other person or persons is authorized to assume in the behalf of Krohn Hite any liability in the connection with the sale of its instruments CAUTION The instrument you have purchased is a precision instrument manufactured under exacting standards Any attempts to repair modify or otherwise tamper with the instrument by anyone other than an Krohn Hite employee or authorized representative may result in this warranty becoming void Li win man 3200 PCS2B FACTORY
14. surements of the current through the load should be made at the load not at the 3200 PCS 2B terminals i e as in determining resistance values of shunts etc The model 3200 PCS 2B is factory tested and calibrated with 1kQ 100Q 10Q 1Q and 0 1Q on the 1 mA 10 mA 100 mA 1A and 10A ranges respectively Although all precautions have been made to minimize the effects of thermals it is a good practice to allow when time permits 15 minutes between high current usage 1 or 10 amps and milliamp range measurements The unit does not exceed its basic accuracy specifications for the low ranges However some drift does occur in the sensing circuits due to high current operation which may affect critical milliampere measurements 6 win man 3200 PCS2B 3 4 0 3 4 1 3 4 2 3 4 3 3 4 4 3 4 5 3 4 6 3 4 7 3 4 8 Programming via the IEEE 488 Bus PCS 2B ONLY The model PCS 2B is compatible with the IEEE STD 488 1978 The applicable reference publication is IEEE STANDARD DIGITAL INTERFACE FOR PROGRAMMABLE INSTRUMENTATION IEEE STD 488 1978 PUBLISHER THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS INC 345 EAST 47TH STREET NEW YORK NY 10017 The model 3200 PCS 2B may be programmed over the IEEE 488 INTERFACE BUS The interface functions contained in this unit are SHO AH1 TO L2 SRO RLO PPO DCO DTO CO El The output range the Model PCS 2B may be controlled over the bus Simplified commands will program t
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