Modems of the MuLogic LLM-336D series are devices for reliable data transmission over analog leased lines, high-quality lines, copper cable or for work in combination with radio equipment. Today, there are two options (subscriber's side): MuLogic LLM-336D.RS-232 and MuLogic LLM-336D.Eth
HARDWARE VERSION LLM-336D.RS232
LED modem indicators
The front panel of the LLM-336D modem contains five LED indicators that show the status of the most important interface signals and the status of the modem.
LED indicators on the LLM-336 modem display the status of the modem in real time and the key signals of the terminal equipment interface (DTE). In the event of a communication problem, these LED indicators can help you determine the cause of the problem.
|-||-||Modem is turned on and working properly|
|It monitors the status DTR signal of the interface coming from the connected DTE. DTE (connected device) activates the DTR signaling that its serial port is ready for communication.|
|D1||Blinks when the modem receives data from the connected DTE|
|RxD*||104||D2||Blinks when the modem receives data from a remote modem|
|DCD||109||S5||Monitor the status of the DCD modem interface signal. The modem activates the DCD to signal that the carrier is received from the remote modem|
ITU-T V.34 – 33.6, 28.8, 26.4, 21.6, 19.2, 14.4, 12, 9.6, 7.2, 4.8 and 2.4 kb/s, asynchronously / synchronously
ITU-T V.32bis -14.4, 12 и 7.2 kb/s, asynchronously / synchronously
ITU-T V.32 - 9600 and 4800 b/s, asynchronously / synchronously
ITU-T V.22bis – 2400 and 1200 b/s, asynchronously / synchronously
ITU-T V.22 -1200 b/s, asynchronously / synchronously
ITU-T V.21 – 300 b/s, synchronously
Bell 212A – 1200 b/s, asynchronously / synchronously
Bell 103 – 300 b/s, asynchronously
Half-duplex and multidrop modes
ITU-T V.33 - 14400, 12000 b/s, asynchronously / synchronously
ITU-T V.29 - 9600, 7200, 4800 b/s, asynchronously / synchronously
ITU-T V.27bis - 4800, 2400 b/s, asynchronously / synchronously
ITU-T V.23 - 1200 b/s, asynchronously
Note: these modules only support half-duplex operation.
Error Correction and Data Compression
ITU-T V.42 - LAPM error correction
ITU-Т V.42bis and V.44 data compression
Supported DTE (serial port) data rates and formats
Asynchronous data rates:
300, 600, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 19200, 28800, 38400, 57600, 115200 b/s
Asynchronous formats: 10 bit: 8-Н-1, 7-Е-1, 7-О-1 or 11 bit: 8-Е-1, 8-О-1
Synchronous data rates:
1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 26400, 28800, 33600 b/s
Clock Modes Sync Tx: internal, external or slave mode RxClk.
Supported DTE (serial ports) interface signals
RS232C – V.24/V.28: TxD, RxD, RTS, CTS, DSR, DCD, DTR, RxClk, TxClk, ExtClk, TST.
- - 4-wire leased lines, cable or LF port
- Linear connector type:
LLM-336D: 6P4C modular connector
- Resistance of the line: 600 Ohm
- High Rx resistance: 5000 Ohm for multipoint operation
- Тx resistance: 600/5000 Оhm for multipoint operation
- Transmit level
from -10 tо -30 dBm @ 600 Ohm. Default value: -11dBm @ 600 Ohm
from -12 tо –32 dBV @ ZR. Default value: -13 dBV @ ZR (ES 203 021)
- Selectable threshold level of the signal at the reception:
-43 dBm ON.
- -48 dBm OFF.
- -26 dBm ON.
- -31 dBm OFF.
- -16 dBm ON.
- -21 dBm OFF.
HARDWARE VERSION LLM-336D.ETH
LLM-336D.ETH modem offers transparent communication for Ethernet packets, regardless of the top-level protocol. The modem is designed for industrial applications: power supply is possible from low AC voltage or DC power supplies.
LED modem indicators
|Modem is turned on and working properly|
|It monitors the status of the LNK LED on the rear panel. This LED is lit when the Ethernet port is properly connected to a hub, switch or PC|
|Blinks when the modem sends Ethernet frames to the remote modem|
|RxD*||Blinks when the modem receives Ethernet frames from a remote modem|
|DCD||Indicates that a valid connection is made with a remote modem|
LED Ethernet indicators
|A collision is detected on a connected local network|
|Ethernet port in full duplex mode|
|The Ethernet port operates at 100 Mbps|
|Rx/Tx||Flashes when data is transmitted via Ethernet port|
|LNK||Ethernet is connected (hub, switch or PC)|
Modulation mode and bit rate
Modulation type: ITU-T V.34
Maximum data transfer rate: 33.6 kb/s
Connection to the line
2-wire and 4-wire copper line
Resistance of the line: 600 Оhm
Connection type: remote bridge
10/100baseT Auto-MDI/MDIX port
Frame format: max. 1536 bytes
Buffer capacity: 256 frames
Address filter: automatic learning and aging
Aging time: 300 seconds
Connection Type: 10baseT or 100baseT UTP
Traffic carrying capacity
Bandwidth at modem speed 33.6 kb/s: 3.9 kByte/s
Throughput delay at modem speed 33.6 kb/s: 45-70 ms
18-60 VDC or 18-30 VAC
Power consumption: 2.2 W max.
Starting current: 160 mА
Length: 95 mm
Width: 145 mm
Height: 30 mm
Weight: 220 g