Campbell Scientific SC-USB USB to CS I/O Optically Isolated Interface - Manual (Page 8)

SC-USB USB to CS I/O Opto-isolated Interface
FIGURE 1-1. Most of the components shipped with the SC-USB.
SC12 cable and ResourceDVD not shown.
2. Technical Specifications
2.1 USB Specifications
• USB Version 1.1
• USB transfer rate up to 12 MBits/second
• Active current consumption less than 85 mA (current drawn from PC)
• Standby current consumption less than 18 mA (current drawn from PC)
• 17648 Cable Description: 6 ft (1.8 m) length; USB Type A male to Type B
male.
2.2 CS I/O Port Specifications
• Opto-isolated from the PC/USB to 47 V AC or DC. Note that this is
signal isolation only, and does not provide safety isolation.
• Supports asynchronous communication from 9600 to 115200 baud and
synchronous communication up to 1 MBit/second.
• Campbell Scientific protocols implemented: supports Modem-Enable
(ME), Synchronous Device Communications protocol (SDC) and
Concurrent-SDC (CSDC) modes. Some of these modes may require that
the datalogger operating system be a specific version or higher. The SDC
mode only works with operating systems created since October 2002
(CR10X 1.18 or higher, CR23X 1.15 or higher, etc.) The CSDC mode
only works with a PakBus (PB) operating system and the CR5000.
• Dataloggers supported 21X, CR7X, CR500, CR510, CR10, CR10X / TD /
PB, CR23X / TD / PB, CR800 series, CR1000, CR3000 and CR5000.
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