Measurement-computing CIO-CTRxxHD User Manual

CIO-CTR10HD & CIO-CTR20HDRevision 6January, 2001

To write to or read from a register in decimal or HEX, the following weights apply:801287406462032510164883442221110HEX VALUEDECIMAL VALUEBIT POSITION

5.2 BASE +400 hex & BASE +401 hexBASE + 400 controls the wait state for the board and the clock source and interruptlevel for 9513 #1 and 9513 #2L

WSEN enables or disables the wait state.1 = Wait State Enabled0 = Wait State DisabledNOTE: Base +400 applies to CTR10HD and the first ten channelsof

6 SPECIFICATIONSTypical for 25°C unless otherwise specified.POWER CONSUMPTION+5VCIO-CTR10HD 475 mA typical, 590 mA maxCIO-CTR20HD 800 mA typical, 1A

7 ELECTRONICS AND INTERFACING 7.1 VOLTAGE DIVIDERSAn alternative method of measuring a signal which varies over a range greater than theinput range of

NOTEThe resistors, R1 and R2, are going to dissipate power in the dividercircuit according to the equation W = I2 x R; (Current (I) =Voltage/Resistanc

The cut-off frequency is that frequency above which no variation of voltage withrespect to time may enter the circuit. For example, if a low-pass fil

For your notes.13

For your notes.14

EC Declaration of ConformityWe, Measurement Computing Corporation, declare under sole responsibility that theproduct:DescriptionPart NumberCounter / T

MEGA-FIFO, the CIO prefix to data acquisition board model numbers, the PCM prefix to dataacquisition board model numbers, PCM-DAS08, PCM-D24C3, PCM-DA

Measurement Computing Corporation16 Commerce Boulevard,Middleboro, Massachusetts 02346(508) 946-5100Fax: (508) 946-9500E-mail: info@measurementcomputi

TABLE OF CONTENTS117.2 LOW PASS FILTERS DE-BOUNCE INPUTS ...107.1 VOLTAGE DIVIDERS ...107 ELE

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1 INTRODUCTIONThe CIO-CTR##HD is really a single board with two (or four) CIO-CTR05's on it.For the balance of this manual we will refer to both

3.1 BASE ADDRESSUnless there is already a boardin your system which usesaddress 300h (768 Decimal)then you can leave theswitches as they are set at th

addresses, then 300-31F HEX are free to use. Address not specifically listed, such as390-39F, are usually free.3.2 INTERRUPT LEVEL SELECTA single int

4 I/O CONNECTOR & PINOUTThe CIO-CTRxxHD use a 50-pin inline connector. The CIO-CTR10HD has only oneconnector while the CIO-CTR20HD has two. The co

5 REGISTER MAP5.1 CONTROL & DATA REGISTERSThe CIO-CTR10HD is composed of two AM9513 counter timer chips, theCIO-CTR20HD is composed of four. Each