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Summary of Contents for Campbell SC932A
- Page 1 SC932A CS I/O to RS-232-DCE Interface Revision: 12/2022 Copyright © 1987 – 2022 Campbell Scientific CSL I.D - 483...
- Page 2 Quotations for repairs can be given on request. It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment, in support of this policy a “Declaration of Hazardous Material and Decontamination”...
- Page 3 About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in (square inch) = 645 mm Mass: 1 oz.
- Page 4 • Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...
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Page 5: Table Of Contents
4. RAD Modem Application ........... 3 RAD Modem – Two-Way ..............4 RAD Modem Wiring and Grounding ...........4 Testing RAD Modem Communication ..........6 Figures 1-1. SC932A CS I/O to RS-232-DCE Interface ..........1 4-1. Two-Way Communication ..............4 4-2. Installation of Spark Gap Protection ............5 Table 4-1. -
Page 6: General Description
Communications Equipment) serial port. Features include: • True RS-232 signal levels. Power for the SC932A is supplied from the 5 V supply on pin 1 of the • data logger’s CS I/O port. The SC932A will use the 5 V supply to power the RS-232 modem if needed. -
Page 7: Specifications
SC932A CS I/O to RS-232-DCE Interface Specifications RS-232 9-Pin Male Connector Pin-out: Pin No. Name Description Data Carrier Detect (No Connection) Received Data Transmitted Data Data Terminal Ready (5 V Supply from CS I/O) Signal Ground Data Set Ready (No Connection) Request to Send –... -
Page 8: Installation
4-wire, unconditioned dedicated line. Campbell Scientific offers a kit that includes the SC932A, the 9- to 25-pin adaptor, and a mounting bracket. The bracket will mount the RAD, SC932A and adaptor to the back plate in a Campbell Scientific enclosure. This section describes using a short range asynchronous modem, SRM-5A RAD modem. -
Page 9: Rad Modem - Two-Way
Set the DCE/DTE switch on the back of the RAD modem connected to the SC932A to DCE. For a RAD modem connected to a PC, set the DCE/ DTE switch to DCE. For a RAD modem connected to a serial printer, set the DCE/DTE switch to DTE. -
Page 10: Installation Of Spark Gap Protection
Occasionally, a customer needs to transmit data across longer or smaller gauge wires or at higher speeds than can be done with the RAD modem powered by the SC932A. RAD does sell a 9-volt power supply that will boost the signals enough to meet some of these more demanding... -
Page 11: Testing Rad Modem Communication
To verify that the data logger and its serial I/O port are working, try to access input memory locations using a laptop PC with the SC32B or the CR10KD Keyboard Display. If the data logger passes tests 4, 5, and 6, then the SC932A is suspect and will need to be repaired or replaced. - Page 12 Campbell Scientific Regional Offices Australia France Thailand Location: Garbutt, QLD Australia Location: Vincennes, France Location: Bangkok, Thailand Phone: 61.7.4401.7700 Phone: 0033.0.1.56.45.15.20 Phone: 66.2.719.3399 Email: info@campbellsci.com.au Email: info@campbellsci.fr Email: info@campbellsci.asia Website: www.campbellsci.com.au Website: www.campbellsci.fr Website: www.campbellsci.asia Brazil Germany Location: São Paulo, SP Brazil...
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