LLM1100 Bell 202/CCITT V.23 1200 Baud Modem

The Data-Linc Group LLM1100 is a Bell 202 (CCITT V.23 optional) 1200 baud modem. It can be easily configured for simplex (bit mode), half-duplex and full duplex operation. The LLM1100 is designed to be used on private, leased non-switched telephone lines or any dedicated two-conductor wire (twisted or untwisted, shielded or unshielded).

The LLM1100 is microprocessor-based— when the carrier shuts off, data bit errors are eliminated. This reduces retransmissions for trouble-free PLC communications. The LLM1100 also incorporates a unique data sense carrier control feature that eliminates the need for RTS/CTS control on multi-point Remotes.

The LLM1100 easily interfaces with most PLCs, RTUs and PCs. The LLM1100 supports RS232 interface.

The LLM1100 has a range of 20 miles (32 km) on any ordinary wire pair or unlimited on loaded telephone company voice grade (VG-6) leased lines or equivalent.^*

LLM1100 Specifications

Range
Up to 20 miles (32 km) on unloaded lines or
unlimited range on loaded lines¹

Serial Data Interface
Protocol. RS232, 10 or 11 bit asynchronous
Throughput. 300, 600, 1200 Baud
Flow Control. RTS control or DSCC (Data Sense Carrier Control)
Serial Connector. DB9 female

Carrier Interface
Protocol. Bell 202, CCITT V.23 (Bell 202 default)
Carrier Connector. Removable Terminal Block

Operation Modes²
Point-to-point, point-to-multipoint
Two wire/four wire
Simplex, half-duplex and full-duplex (Full-duplex
requires four wire and point-to-point mode.)

Power
Supply Voltage. 11 - 24 VDC; 12 VDC wall mount
transformer supplied with modem.
Current. 60mA @ 12 VDC
Power Connector. Center Positive Barrel Jack or
Removable Terminal Block

Operating Environment
Temperature. 32° to 140°F (0° to +60°C)
Humidity. 0 to 95% non-condensing humidity

Enclosure
Standard. NEMA 1; 18-gauge steel;
1.54" x 4.90" x 7.75" (3.9 x 12.4 x 19.7 cm) including mounting flanges

Weight
2 lbs (0.91k)

LLM1100 Bell 202/CCITT V.23 1200 Baud Enclosure Dimensions