Campbell Scientific SC-IRDA CSL CS I/O to Infrared Interface - Manual (Page 5)

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SC-IRDA Infra-red Communications
Interface
1. Introduction
The SC-IRDA interface is designed to provide a wireless connection between a
hand-held computer and a datalogger. It is designed to be permanently
installed through the wall of environmentally sealed enclosures thereby
removing the need to open the enclosure or expose any connectors whilst
allowing full communication with the datalogger inside.
The quiescent power consumption of the SC-IRDA is very low so it has no
significant effect on the overall power consumption of the logging system.
The SC-IRDA also supports a new mode of communicating with some
dataloggers (the CR510, CR10X and CR23X with new standard operating
systems) that allows it to be connected at the same time as other modem
devices, for example a telephone modem, thus avoiding the need for any extra
port switching device.
2. Specifications
2.1 Electrical
Standby Current: 0.17mA typical
Active communicating: 6.2mA typical
(current drawn from the 5V supply provided by the datalogger)
2.2 Communications
Standards: Conforms to the IRDA low power SIR specification (as
supported by most Palm PCs and laptops)
Range: 200mm with typical lighting
Acceptance angle: 30 degrees
2.3 Physical
Size: 12mm diameter x 44mm long
Cable length: 800mm.
Weight: 90g.
Temperature range (standard): -25 to +50C
Temperature range (extended): -40 to +80C
SC-IRDA module sealed to IP68 (see installation notes below)