INSTRUCTION MANUAL SC932A 9-Pin to RS-232-DCE Interface Revision: 2/04 C o p y r i g h t ( c ) 1 9 8 7 - 2 0 0 4 C a m p b e l l S c i e n t i f i c , I n c .
Warranty and Assistance The SC932A 9-PIN TO RS-232-DCE INTERFACE is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.
SC932A Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections. 1. General Description....................................................1 2. Specifications .............................................................2 3. Installation...................................................................3 4. RAD Modem Application ............................................3 4.
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SC932A 9-Pin to RS-232-DCE Interface CAMPBELL SCIENTIFIC, INC. Datalogger SC932A DCE Device Logan, Utah Made in USA SN: FIGURE 1. SC932A 9-Pin to RS-232-DCE Interface 1. General Description The SC932A (Figure 1) is used to interface a CSI datalogger to any modem that is configured with an RS-232 DCE (Data 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 datalogger’s I/O port.
SC932A 9-Pin to RS-232-DCE Interface 2. Specifications RS-232 9-Pin Male Connector Pin-out: Pin No. 1 2 3 4 5 6 7 8 9 I/O In In Out Out In Out In In Name DCD RXD TXD DTR GND DSR RTS CTS Ring 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 – Modem Enable Clear to Send (No Connection) Rings Datalogger CS I/O 9-Pin Male Connector Pin-out: Pin No.
SC932A 9-Pin to RS-232-DCE Interface Electrical The SC932A uses power from the +5 V line on the 9-pin interface connected to the datalogger. Additional current (up to 10 mA) from the 5 V supply may be used by the RS232 device connected to the SC932A. Physical Height: Width: Length: Weight: 0.9 in (2.3 cm) 1.6 in (4.1 cm) 3 in (7.6 cm) 1.6 oz (45.4 g) Environmental Temperature: -25 to +50oC Humidity: up to 95% non-condensing 3.
SC932A 9-Pin to RS-232-DCE Interface excellent immunity to circuit noise. Table 1 gives the data rate possible for several gage cables across several distances. TABLE 1. Approximate Range, miles and km Data Rate bps 19 Gauge (0.9 mm) miles km 24 Gauge (0.5 mm) miles km 26 Gauge (0.4 mm) miles km 9,600 1,200 6.2 7.6 2.8 3.4 2.0 2.5 10.0 12.2 4.5 5.5 3.3 4.0 4.
SC932A 9-Pin to RS-232-DCE Interface 6361 includes hardware for mounting to ground lug of CSI enclosures models ENC 10/12, ENC 12/14, or ENC 16/18). Spark gap wiring is straight through such that pin to pin continuity exists between the two modems. If the modems are installed entirely within a building, the transient spark gap protection is probably not needed. FIGURE 3.
SC932A 9-Pin to RS-232-DCE Interface Occasionally a customer needs to transmit data across longer or smaller gage 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 applications. Please contact RAD for more information. 4.
SC932A 9-Pin to RS-232-DCE Interface 6. To verify that the datalogger 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 datalogger passes tests 4, 5, and 6, then the SC932A is suspect and will need to be repaired or replaced.
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Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za sales@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA) PO Box 444 Thuringowa Central QLD 4812 AUSTRALIA www.campbellsci.com.au info@campbellsci.com.au Campbell Scientific do Brazil Ltda.
