Measurement-computing PC104-CTR10HD Manuel d'utilisateur

PC104-CTR10HDUser’s ManualRevision 2October, 2000

3.0 CONTROL & DATA REGISTERSThe PC104-CTR10HD has two AM9513 counter/timer chips, “#1” and “#2” (referback to Figure 2-3). Each AM9513 contains f

To write to or read from a register in decimal or HEX, the weights in Table 3-1 apply:Table 3-1. Bit Weights801287406462032510164883442221110HEX VALUE

Base +400 hexL0L1L2CLK00CLK01CLK10CLK11WS_ENB01234567L2 - L0: selects the interrupt levelL2L1 L0 Interrupt Level010 2011 3100 4101 5110 6111 7CLK01 -

4.0 SPECIFICATIONSPOWER CONSUMPTION+5V 225 mA typical, 300 mA maxCOUNTER SECTIONCounter type 9513Configuration Two 9513 devices. 5 counters per 9513,

5.0 ELECTRONICS AND INTERFACING5.1 VOLTAGE DIVIDERSIf you wish to measure a signal which varies over a range greater than the input rangeof a digital

Dropping the voltage proportionally is often called attenuation. The formula forattenuation is:For a given attenuation, pick a handy resistor andcall

5.2 LOW-PASS FILTERS DE-BOUNCE INPUTSA low-pass filter is placed on the signal wires between a signal and an A/D board. Itstops frequencies greater t

For your notes.13

For your notes.14

EC Declaration of ConformityWe, Measurement Computing Corporation, declare under sole responsibility that theproduct:DescriptionPart NumberTen-Counter

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, MA 02346(508) 946-5100Fax: (508) 946-9500E-mail: [email protected].

125.2 LOW-PASS FILTERS DE-BOUNCE INPUTS...105.1 VOLTAGE DIVIDERS...105.0 ELECTRONICS AND INTERFACING...

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1.0 SOFTWARE INSTALLATIONThe board has switches to set before installing the board in your computer. By far thesimplest way to configure your board is

Certain addresses are used by the PC, others are free and may be used by thePC104-CTR and other expansion boards. Refer to Table 2-1 for PC I/O addre

Table 2-1. PC I/O AddressesSERIAL PORT3F8-3FFEGA2B0-2BFFLOPPY DISK3F0-3F7PARALLEL PRINTER270-27FSERIAL PORT3E8-3EFALT BUS MOUSE23C-23FCGA3D0-3DFBUS MO

2.4 INSTALLING THE BOARD1. Turn the power off.2. Push the board firmly down into the expansion bus connector. If it is notseated fully it may fail to

Figure 2-3. Address Switches, Counters and Connector P1 Pin Locations5