Direct Connection
The most common method of communication between your computer and a Data Logger is by direct connection. You visit the site with a portable computer or the logger is returned to your office for unloading.
| Model |
Description |
| 6602A |
1-2m cable (25-pin D socket) |
| 6602I |
1-2m cable (9-pin D socket) |
| 6800B |
PDL to RS-232 Interface |
Remote Connection
Direct communication may be used for distances up to 30 metres (between the computer and logger). For longer distances a telephone service and data modems must be used. This will enable you to program, unload and view a remote data logging system from your office. Your computer must be connected to a standard data modem (see Model 6802B).
| Model |
Description |
Use with cable |
| 6802B |
Desktop Data Modem |
6602A – 25 pin
6602I – 9 pin
|
| 802C |
Micropower Modem |
 6807C |
GSM900 (GSM Modem) |
6602Y/3 – (15D – 25D plug)
6602Y/2 – (15D – 9D plug) For Connection to 6103k
|
| 6807D |
GPM3000 (CDMA Modem) |
|
For the remote Data Logging site, choose equipment using the Selection Guide shown below. Your choice will depend on:
- Telephone Service Availability
- can a standard telephone service be installed?
- is GSM coverage available?
- is CDMA coverage available?
- Power Resources
- is mains power available?
- can you install a solar panel?
Other considerations would include data transmission rates, service charges and housings to secure the equipment.
Radio and Satellite
STARLOG equipment may also be configured for remote communications via radio or satellite networks. Please contact your nearest Unidata office for details of which services are available in your region.
Data Logger – Remote Communication – Selection Guide
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