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10 of 50 Installation - 3650 Portable O2 Analyzer
Operator Manual
ORBISPHERE
1.5.2 Instrument - PC Connection
An RS-232 cable is supplied with the instrument, with a 6-pin LEMO plug on one end and
a 9-pin D-Type plug on the other.
Note:
If you use an adapter for the connection to the PC, make sure it is designed for this
purpose and, thus, has all nine pins accessible. Some 25-to-9 pin adapters are supplied
for specific use, such as a mouse, and these may have only certain pins available.
It is not necessary to keep the PC connected to the instrument during measurement. This
connection is required for downloading stored measurements, real-time monitoring,
reviewing and changing configuration parameters and testing the instrument from the PC
(see “Troubleshooting” on page 38 for details).
Fig 1-6: Instrument to PC Connections
Pin RS232 Signal
Pin 1 Transmitted data (TXD)
Pin 2 Received data (RXD)
Pin 3 Not Used
Pin 4 Not Used
Pin 5 Not Used
Pin 6 Ground
Pin Use
Pin 1 Not Used
Pin 2 RS-232 Transmitted Data (TXD)
Pin 3 RS-232 Received Data (RXD)
Pin 4 Not Used
Pin 5 Ground
Pin 6 Not Used
Pin 7 Not Used
Pin 8 Not Used
Pin 9 Not Used