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SC32A

Optically Isolated

RS232 Interface

Reference Manual

Issued  5.5.94

Copyright 

 1987 Campbell Scientific Inc.

Copied under licence by Campbell Scientific Ltd.

Содержание SC32A

Страница 1: ...SC32A Optically Isolated RS232 Interface Reference Manual Issued 5 5 94 Copyright 1987 Campbell Scientific Inc Copied under licence by Campbell Scientific Ltd...

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Страница 3: ...lieu of all other guarantees expressed or implied including those of suitability and fitness for a particular purpose Campbell Scientific is not liable for consequential damage Please inform us befor...

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Страница 5: ...Pin 2 4 Operation 2 5 Application 2 5 1 SC32A with 21X and CR7 Dataloggers 3 5 2 SC32A with CR10 Datalogger 3 5 3 Special Cases 4 5 3 1 Null Modem 4 5 3 2 External Power Supply 5 Figures 1 PCB Layout...

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Страница 7: ...smission of synchronous CR10 data to the RS232 peripheral This function is enabled by the installation of an internal jumper SC32As with serial numbers less than 1500 were shipped with the jumper in t...

Страница 8: ...levels of 8 4V are returned If the peripheral requires logic levels greater than the voltage provided by the DTR and RTS voltages an external supply may be used to power the RS232 side of the SC32A se...

Страница 9: ...connected to the datalogger e g a Storage Module The jumper must again be removed The dataloggers are designed to delay output to a peripheral enabled by pin 6 while pin 5 is active i e there is no o...

Страница 10: ...d the datalogger Data is passed to the SC32A only if the SDC99 is addressed After being addressed the SDC99 raises pin 6 of the SC32A thus the jumper must be removed 2 An SC32A may be used to interfac...

Страница 11: ...om the cable going to the RS232 device The most common external supply is a 6 or 12V DC battery Any supply over 9V must be connected to pin 15 only Connecting a non current limited supply of greater t...

Страница 12: ...SC32A Optically Isolated RS232 Interface 6 Figure 2 Schematic...

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