SC929 Interface Cable, CS I/O to RS-232

Overview

The SC929 is a cable interface between a datalogger and a computer. One end of the cable connects to the datalogger's CS I/O port. The other end connects directly to the 9-pin serial port of a computer.  The SC929 does not provide optical isolation, so it should only be used with laptop computers running from internal batteries (not connected to ac power).

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Detailed Description

The SC929 cable connects the datalogger's CS I/O port directly to the 9-pin serial port of a battery-operated laptop. It converts the CMOS logic levels of the datalogger to the RS-232 logic levels of the laptop. The SC929 does not provide electrical isolation, so it should only be used with laptop computers running from internal batteries (not connected to ac power).

Communications with a datalogger over CS I/O utilize Modem Enable mode (ComME). It does not provide Synchronous Device Communication (SDC).

Specifications

Typical Current Consumption Draws 8 mA from the datalogger
Maximum Baud Rate 57600
Operating Temperature Range -25° to +50°C
Connections
  • 9-pin male connector attaches to datalogger's CS I/O port.
  • 9-pin female connector configured as DCE; attaches to AT-type portable PC.
  • RS-232 to CS I/O Modem Enable (ComME)
Cable Length 198.1 cm (78.0 in.)
Weight 181 g (6 oz)

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Dataloggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800
CR850
CR9000 (retired)
CR9000X

Frequently Asked Questions

Number of FAQs related to SC929: 3

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  1. The SC929 has been functionally replaced by the SC32B. While the SC929 is still available, the SC32B has increased capability at a reduced cost. See the table for a comparison:

     

      SC929

      SC32B

      Optically Isolated

      No

      Yes

      Maximum Baud

      9600

      115200

      Current Draw

      8 mA

      Active < 200 µA

    Cables are an additional comparison point for these two products:

    • The SC929 cable directly connects the PC to the datalogger’s CS I/O port.
    • The SC32B interface typically uses the 10873 serial cable to connect to the PC and the SC12 cable to connect to the CS I/O port. Both of these cables are shipped with the SC32B.
  2. See the table for a detailed comparison:

     

     17394
     USB-serial  cable

     SC32B

     SC929

     SC-USB

     Useful for  Connecting

     PC USB port to  datalogger RS-  232 port

     Datalogger CS  I/O  port to laptop  COM  port

     Datalogger CS  I/O  port to laptop  COM  port

     Datalogger CS  I/O  port to PC  USB  port

     Connectors

     USB A male –  9-pin male

     9-pin male – 9-pin  female

     9-pin male – 9-pin  female

     USB B female –  9-pin male

     Length

     6 ft

     3 in.

     6 ft

     1.6 in.

     Power  Consumption

     N/A

     Active <200 a="" --200--="">

     8 mA continuous

     Active <20 ma="" --20--="">

     Optically  Isolated

     No

     Yes

     No

     Yes

     Operating  Temperature

     N/A

     -25° to +50°C

     -25° to +50°C

     -25° to +50°C

     Maximum Data  Transfer Rate

     1 Mbps USB

     115200 bps

    9600 bps

     1 Mbps USB

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