The COM220 modem enables communications between a computer and a Campbell datalogger via a public switched telephone network. A Hayes-compatible modem is required at the base-station computer while a COM220 connects to the datalogger at the field site. The COM220's wide operating temperature range and minimal power requirements make it ideal for use at remote sites. A surge protector to help suppress incoming electrical transients carried down the phone line is strongly recommended.
Features
Improvements over its predecessor, the COM210, include:- Supports communication rates up to 115.2 kbps between modem and logger. (In practice, data transmission through phone lines is generally constrained to 33.6 kbps.)
- Offers both modem enabled (ME) and synchronous device communications (SDC) modes.
- Allows user to set the number of rings before answering call.
Specifications
- Weight: 0.35 lb (0.16 kg)
- Dimensions: 6.5" x 1.0" x 2.6" (16.5 x 2.5 x 6.6 cm)
- Standard Operating Temperature Range: -25° to +50°C
- Extended Operating Temperature Range: -55° to +85°C
