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Transcript
Analog and Digital I/O Model 626 Features Six versatile 24-bit counters for encoders/timers with interrupt generation QNX driver Battery backup of counters Four 14-bit D/A outputs, 20 kHz update rate Sixteen 14-bit differential A/D inputs, 50 kHz rate Watchdog timer may be used to reset PCI bus 48 bi-directional digital signals for solid state relay boards, 20 with edge detection & interrupts Description Each counter may be Watchdog The Sensoray Model 626 programmed to function as a The 626's watchdog timer low cost interface saves timer using the 626's internal may be connected to the space in PCI bus systems clock or an external clock. bus reset via a 2-pin by combining five When paired, 48-bit connector. It may be functions into a half-size counters may be used for enabled or disabled under card. Five flat cables frequency measurement. program control. The timer connect the Model 626 to is automatically disabled external breakout boards. whenever a bus reset occurs. Encoders and Counters Digital I/O Three 24-bit up/down counter pairs may be A/D configured for six Sixteen differential input incremental encoders channels are multiplexed to each having 24-bits of a sample/hold and The model 626's fortyeight digital lines have standard pin outs for solidstate relay boards. Each resolution. Each channel successive approximation line is software accepts two phased TTL A/D. Each channel may be programmable as an input or RS-422 signals plus an programmed for 5V or or output. Forty inputs index signal to track 10V. No trim adjustments may be programmed for encoder direction and are needed. edge detection and displacement. Each input interrupts. The status of is conditioned and D/A synchronized to the 626's Four voltage outputs may be monitored by software. internal clock. programmed for 10 volts. Whenever a system reset A unique circuit prevents occurs all output channels unpredictable D/A outputs are turned off. Unlike conventional counters, the 626's counters do not accumulate errors when the encoder dithers or changes direction. The during CPU initialization. All outputs are reset to zero volts whenever a bus reset occurs. output lines may be Software All the features of model 626 may be exercised using software 626 supplies 5 volt power development kit, to each encoder channel. SDK626. This 32-bit DLL All counters are for Windows 95/98 and programmable and may NT allows the use of optionally generate multiple 626 boards. QNX interrupts. driver available. The counter channels have a battery backup feature that keeps them running during a power failure. The 626's battery charger will recharge an external 3.6V NiCd when power is restored. Ordering Information Specifications Analog I/O Accessory General Operating 0 C to 70C 7505TDIN rails temperature PC bus interface Terminal board with DIN PCI, 32-bit, 33 MHz 18" analog cable, 50-pin 7501C Input power < 3 watts 1 meter analog cable, 50- 7501C1 pin A/D Converter Conversion time 20 microseconds Digital I/O Accessory Number of channels 16 differential 18" digital cable, 50-pin Input resistance 100 Megohms 1 meter digital cable, 50-pin 7501C1 CMRR 100 dB minimum 24 position relay board 720RB Max. common mode 5 volts 24 position relay board with 720RB- DIN mounting hardware DIN voltage Resolution 16-bits Accuracy 14-bits Input ranges +/-10, V Offset error +/- 1/2 LSB Encoder Accessory 18" encoder cable, 26-pin 7503C 1 meter encoder cable, 26- 7503C1 pin Encoder terminal board with 7503T- D/A converter DIN snap rails Conversion time 20 microseconds NiCd battery, 3.6V Resolution 13-bits Offset error +/- 2 bits Output voltage +/- 10 volts Output resistance 87 ohms Digital I/O 7501C DIN Number of channels 48 bi-directional Output voltage 0 to 5 V open collector Output sink current 100 mA @1.1 V Encoder I/O Number of channels 6 quadrature, 24-bit Input voltage TTL or RS-422 Input frequency 2 MHz w/internall clock 1 MHz w/external clock Quadrature multiplier x1, x2, x4 Watchdog Timer Time-out 1/8, 1/4, 1, 10 sec 2-pin connector may be connected to the bus reset line to allow a system reset from software