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Sensoray Model 7405
01/10/2000
Sensoray Co., Inc.
7313 SW Tech Center Dr., Tigard, Oregon 97223
voice: 503.684.8005, fax: 503.684.8164, e-mail: sales@sensoray.com
www.sensoray.com
M A N U A L 4 2 6
STDbus Analog Output Card
INSTRUCTION MANUAL
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1. Do not remove the 7405 from its protective antistatic bag until you are ready to install it in your computer. Sensoray Company, Incorporated (Sensoray) warrants the 2. Handle the 7405 only at grounded, ESD protected model 7405 hardware to be free from defects in material and stations. workmanship and perform to applicable published Sensoray 3. Always turn off the computer before installing or specifications for two years from the date of shipment to removing the 7405 board. purchaser.
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most significant address nibble, and the table on the right for Hardware Configuration the least significant address nibble. The Model 7405 requires the installation of programming E7 E6 E5 E4 al V E3 E2 E1 al V shunts to select various options such as I/O port addresses and channel operating modes. This section describes these I I I I 0 I I I 0 configuration options. I I I R 1 I I R 2 I I R I 2 I R I 4 After configuring the option shunts, the Model 7405 may be I I R R 3 I R R 6 installed i
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The Model 7405 board occupies two contiguous I/O ports in Analog channel data may be written into the A and B registers after ensuring that the status register handshake bits base port has a read function as well. are both reset to logic 0. Function I/O Address D7 D6 D3 D2 D7 D6 D4 D3 D2 D0 Read Write 0 Base Address + 0 Status Register A Register Base Address + 1 (not used) B Register Channel Analog Output Data Analog output data and channel number is written to the A and B registers, while t
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5. Set analog channel 0 output to -10 volts by programming the channel data value to 000 hex. oltage V Current 6. Adjust the gain trimpot until the voltmeter reads -10 Mode Pin Mode Pin volts. Chan 7. Configure the output modes of all eight channels as + - + - required by your application. 0 2 4 1 3 1 6 8 5 7 8. For each voltage channel, connect the meter to the 2 10 12 9 channel voltage output pins on connector P1. Set the 3 14 16 13 15 to 800 hex. Adjust the channel offset trimpot until
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Sample Drivers These sample driver functions, written in C/C++, assume that all channels are configured for the voltage output mode. With minor modification, these drivers can be made to work with channels that are set up for current output mode operation. #define BUSY 0xC0 // Handshake status bit mask typedef unsigned char UCHAR; UCHAR InByte( UCHAR address ) { // INSERT CODE HERE THAT WILL RETURN A VALUE FROM AN 8-BIT I/O PORT } void OutByte( UCHAR address, UCHAR value ) { // INSERT CODE HER
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1 2 3 4 5 6 7 8 RN2 BOARD 4 ADDRESS 6 3 A SELECT 5 4 B JUMPERS 5 C QC 1 2 3 4 5 6 7 8 9 10 6 D QD 74HCT688 C5 C6 C7 C8 RCO 2 7 P=Q ENP 4 ENT 6 1 2 A A STATE 8 3 9 SRST* REGISTER 2 1 CLR WSTATE* 3 5 GZERO* 1 7 2 9 3 DGND 4 DGND 5 6 1 1 SRST* U25D G 2 D0 3 WSTATE* D1 9 4 D2 GZERO* 7 5 D3 MARCNT 6 D4 SYSRD* ARST* 1 7 D5 A SYSWR* WLO* 2 8 D6 B 8 3 GSTAT* 9 B B D7 C 9 U25C 8 6 RCO 1 4 9 5 7 74HCT138 ARST* EJECTOR 3 2 1 5 4 MEM ADRS REG 7 6 9 T[0..7] 3 A 4 WR B 5 RD C QC 6 RN1 D QD 1 1 RevB MEMRQ RCO
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1 2 3 4 5 6 7 8 INSTALL FOR CURRENT OUTPUT 3 3 3 + + + 1 1 1 2 2 2 - - - VRJUNCT 3 1M 1M 1M + 1 2 - A A C9 R9 3.750V CH0 CH1 CH2 CH7 10K-POT 10K-POT 10K-POT 5 5 5 + + + CH6 7 7 7 6 6 6 - - - C2 CH5 SAMPLE/HOLD R5 R6 CH4 C1 8 GND 7 CH3 R1 R2 CH2 CH7 6 4 E CH6 CH1 2 CH5 9 5 C CH4 CH0 1 B CH3 A CH2 B B CH1 3 3 3 + + + VOLTAGE REFERENCE 3 CH0 1 1 1 X 2 2 2 - - - SMP-08 1M 1M 1M 5 + 7 6 - CH3 CH4 CH5 10K-POT 10K-POT 10K-POT 5 5 5 + + + 7 7 7 6 6 6 - - - C3 R7 C C R3 - 2 1 - + 6 3 7 1 2 + 5 DGND 3 4 5
