LLM-336D External data modem

 External data modem

 

 

          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.

 

LED
ITU-T
DIN
Описание
PWR
- - Modem is turned on and working properly
DTR
108
S1
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.
TxD*
103
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

    SPECIFICATIONS 

 

ull-duplex modes

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.

Line connection

  • - 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

The LED indicators on the LLM-336 modem display the status of the modem in real time and key interface signals. In the event of a communication problem, these LED indicators can help you determine the cause of the problem.

LED
Description
PWR
Modem is turned on and working properly
DTR
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
TxD*
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 

LED
Description
COL
A collision is detected on a connected local network
FDX
Ethernet port in full duplex mode
100 Mbps
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)

 

    SPECIFICATIONS

Modulation mode and bit rate

Modulation type: ITU-T V.34
Maximum data transfer rate: 33.6 kb/s

Connection to the line

Dedicated line
2-wire and 4-wire copper line
Resistance of the line: 600 Оhm
RJ-11 connector

ETHERNET interface

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

Power supply

The power supply of the LLM-336D modem accepts both direct and alternating voltage. The DC input is not polarized.
18-60 VDC or 18-30 VAC
Power consumption: 2.2 W max.
Starting current: 160 mА
Overall dimensions
Length: 95 mm
Width: 145 mm
Height: 30 mm
Weight: 220 g