COM220

Name: COM220
Brand: Campbell Scientific
SKU: COM220
Availability: InStock

Phone Modem

COM220

Orderable

Phone Modem

Pricing

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Configuration

Set for US/Canada (Ships as 18895, 16675, & 2365)COM220-USPart Number: 43006
Set for UK (Ships as 43009, 16675, & 2365)COM220-UKPart Number: 43007
Set for Australia (Ships as 43010, 16675, & 2365)COM220-AUPart Number: 43008

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Model:: COM220
Item Number:: COM220
Warranty:: 1 year

Overview

The COM220 phone modem enables communications between a computer and a Campbell Scientific data logger over a public switched telephone network. A Hayes-compatible modem is required at the computer site. The COM220 connects to the data logger at the field site. Most Campbell Scientific data loggers are compatible.

Key Advantages

Ideal for Remote Sites
Low power use, wide operating temperature range

Technical Description

The COM220 has a CS I/O port, power terminals, screw terminals, and an RJ-11C jack. The data logger connects with the CS I/O port via an SC12 or SC12R-6 cable. The RJ-11C jack is for attaching a surge-protected telephone line. Alternatively, the screw terminals (GND, RING, TIP) can be used to connect the COM220 with a phone line via a surge protector.

Product Notes

call Campbell Scientific for use in unlisted countries

Benefits

Wide operating temperature range and low power requirements make it ideal for use at remote sites
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.)
Compatible with most Campbell Scientific data loggers
Offers both modem enabled (ME) and synchronous device communications (SDC) modes.
Allows user to set the number of rings before answering call.

Specifications

Transmission Distance or Area: Worldwide
Operation: 1200 to 115200 baud digital communications over phone lines
Operating Voltage: 12 Vdc
Current Drain: ~120 μA
(quiescent)
~30 mA
(active)
Communication Rate: 9600, 38400, 57600, 115200 bps
(between data logger and COM220, and selected by user)
Operating Temperature Range: -25° to +50°C
(standard)
Standards: V.92, K56Flex, V.90, V.34, V.32bis, V32, V23, V22bis, V22, V.21, B212, B103
Registration: FCC US 3A4M508BSM2-T-W
IC 2377 A-SM2TW
TBR21
Service Requirements: If not available at the site, phone lines must be installed.
Dimensions: 16.5 x 2.5 x 6.6 cm
(6.5 x 1.0 x 2.6 in.)
Weight: 0.16 kg
(0.35 lb)

Accessories

(3)

Common Accessories

(3)

Replacement Parts

(4)

Ships With

(5)

Compatibility

Phone Line/Surge Protection

Typically, a length of phone line is run from the telephone company's junction box to the COM220s surge protector, and then to the Ground, Tip, and Ring terminals on the COM220. Alternately, if adequate surge protection is provided by the telephone company and the junction box supports it, a length of telephone wire with RJ11C connectors (pn 2365) can be run directly from the junction box to the socket on the COM220.

Data Logger Considerations

Default settings are not compatible for non-PakBus data loggers (i.e., CR5000, CR7, retired data loggers). For these data loggers, the DIP switch settings must be changed; refer to the COM220 manual for details.

An SC12 cable is provided for connecting the COM220 with the data logger.

Software

LoggerNet and PC400 software packages support use of the COM220 with our data loggers. Both of these software packages support automated error-checking or user-initiated contacts. LoggerNet also supports scheduled contact times. Our software can run unattended allowing the user to take advantage of lower off-hour telephone rates.

Enclosure Considerations

The COM220 requires a desiccated, non-condensing environment; a Campbell Scientific enclosure is recommended. Grommets and screws are provided to attach the COM220 to the backplate of our enclosures.