muLOGIC LLM-336 User manual

User Guide
Issue 1.8
Feb. 2016
Copyright 2008-2016
MuLogic B.V.
Plesmanstraat 58d
3905 KZ Veenendaal, The Netherlands
LLM-336
VOICE-BAND LEASED
LINE MODEM
(HARDWARE REVISION 2)

LLM–336 Leased Line Modem
Compliances
Public Leased line operation
•2-wire operation (A2O, A2S): ES 203 021
•4-wire operation (A4O, A4S): ES 203 021
CE Compliance
•EMC: Directive 2004/108/EC (EN 55022, EN55024)
•Safety: Directive 2006/95/EC (EN 60950)
The LLM-336 complies with EMC directive 2004/108/EC and is classified for
use in Residential areas. Test standard: EN 55022 Class B
The LLM-336 also complies with the Immunity standard for ITE equipment
EN 55024 with the applicable test levels increased to levels compatible with
Industrial standards (ref. EN 61000-6-2).
About this user guide
Although this user guide was written with greatest possible care, omissions and
errors cannot be precluded. MuLogic b.v. accepts no liability for any
inaccuracies that may be found.
However, if you have comments or suggestions about this guide, please don’t
hesitate to contact us in order to help us to improve our product documentation.
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: www.mulogic.com
Important note:
This user guide applies to LLM-336 modems with hardware revision 2.
Modems with hardware revision 2 are marked H/W : rev.2 on the serial number
label.
© MuLogic b.v. 2008..2016
This guide is for information purposes only. All design characteristics,
specifications, etc. are subject to change without notice.
No part of this publication may be reproduced, transmitted, transcribed, stored
in a retrieval system or translated into any human or computer language in any
form by any means without the prior permission of MuLogic b.v.
Issue No 1.8 (Feb. 2016)

Declaration of Conformity
We, Mulogic b.v., Olivier van Noortstraat 4, 3124LA, Schiedam, the Netherlands,
herewith declare that the products:
Type of product
Model
Hardware Revision
Panel/DIN-Rail modem
LLM-336D
Rev. 2
Standalone modem
LLM-336S
Rev. 2
Rack mounted modem
LLM-336R
Rev. 2
are in conformity with the European Harmonised Standards as published in the
Official Journal of the EC, Issue C225 (2007-09-25) following the provisions of the
directives:
No.
Title
2004/108/EC
Electromagnetic Compatibility (EMC)
2006/95/EC
Electrical Safety (Low voltage directive)
The compliance of the product has been based on the following standards:
No.
Title
Issue
EN 55022
Emission limits in residential environments
2006
EN 55024
Immunity of IT equipment
1998+A1+A2
EN 60950
Electrical safety of IT equipment
2002
EN 61000-6-2
Immunity in Industrial environments
2001
The last two digits of the year in which the CE marking was affixed: 08
February 26, 2008
J.H.J Beck
Managing Director
This Declaration of Conformity is suitable to the European Standard EN 45014: General Criteria for
supplier's Declaration of Conformity.
The basis for the criteria has been found in international documentation, particularly in ISO/IEC, Guide 22,
1982: Information on manufacturer's Declaration of Conformity with standards or other technical
specifications.

Leased Line Data Modem LLM-336 User Guide – Hardware Details and Installation
Page 1-1
1
Introduction
LLM-336
The MuLogic LLM-336 is a voice-band modem for reliable data communication
over analogue leased lines, conditioned and unconditioned copper cable, or for
operation in combination with radio equipment.
The LLM-336 is available in two versions of standalone modem or as rack card.
The rack card conforms to the CEPT T/CD 01-14 type I specification, which
enables easy integration in various hardware environments.
Up to 16 rack cards can be mounted in a MuLogic UCF-16.3 or MCF-16.3 card
frame. The lower density UCF3.1 housing can house up to 3 modems.
The modem is designed to serve a vast majority of applications. It can be used
on 2-wire and 4-wire lines, in point-to-point and multi-point configurations and
complies with emissions/immunity standards for both industrial and residential
use.
The LLM-336 offers synchronous data rates up to 33.6 kbit/s and supports
asynchronous port rates of up to 115.2 kbit/s.
For asynchronous applications the LLM-336 modems are equipped with an
RS232C and an RS485 interface port.
The LLM-336 is available in the following hardware versions:
•LLM-336D: Small plastic housing suited for panel or Din-rail mounting.
•LLM-336R: Modem card for MuLogic UCF and MCF card frames.
•LLM-336S: Modem card in metal housing for shelf or desktop use.
On the LLM-336D the RS485 port is standard. For LLM-336R and LLM-336S
the RS485 port is available as an option.

User Guide – Hardware Details and Installation Leased Line Data Modem LLM-336
Page 1-2
Features
•Supported modem standards
Full Duplex operation (ITU-T)
V.34 2400 up to 33600 bit/s
V.32bis 7200, 12000 and 14400 bit/s
V.32 4800 and 9600 bit/s
V.22bis 1200 and 2400 bit/s
V.22 1200 bit/s
V.21 300 bit/s
Full Duplex operation (Bell)
212A 1200 bit/s
103 300 bit/s
Switched carrier and multi-point operation (ITU-T)
V.33 12000 and 14400 bit/s (half-duplex only)
V.29 4800, 7200 and 9600 bit/s (half-duplex only)
V.27bis 2400 and 4800 bit/s (half-duplex only)
V.23 1200 bit/s (half-duplex only)
•Operation over 2-wire and 4-wire leased lines or dry copper lines.
•Point-to-point and multi-point/multi-drop operation.
•Switched line impedance for multi-drop operation on dry copper wire.
•Operating modes selected by means of dipswitches.
Up to 40 modes are factory pre-programmed.
•Error Correction and Data Compression for reliable transmission and
throughput improvement of asynchronous data. (ITU-T V.42bis and V.44)
•Automatic Carrier Control (controlled by transmitted data) for half
duplex operation without RTS control.
•Programmable transmit level, ranging from –10 to – 30dBm @600Ω
•Programmable receive carrier detect thresholds.
•Both RS232C and RS485 interfaces supported on LLM-336D.
•RS485 optional for LLM-336R and LLM-336S.
•Data buffers for asynchronous port rates independent from line rate.
•Both 10-bit and 11-bit asynchronous data formats supported.
•Transparent asynchronous communication up to 9600 bit/s

Leased Line Data Modem LLM-336 User Guide – Hardware Details and Installation
Page 2-1
2
Hardware Details and Installation
Hardware versions
The LLM-336 is available in the following hardware versions:
•LLM-336D: Small plastic housing suited for panel or Din Rail mounting.
•LLM-336R: Modem card for MuLogic UCF and MCF card frames.
•LLM-336S: Modem card in metal housing for shelf or desktop use.
Fig. 1 LLM-336D
The front panel of the LLM-336D contains five LEDs that indicate the status of
the most important interface signals and modem status.
Fig. 2 LLM-336R, LLM-336S
Front panel layout
of LLM-336D

User Guide – Hardware Details and Installation Leased Line Data Modem LLM-336
Page 2-2
The front panels of the LLM-336R and LLM-336S contain eight LEDs that
indicate the status of the interface signals and modem status.
Front panel LED Indicators
The LED indicators of the LLM-336, display the real-time status of the modem
and the key DTE interface signals. In case a communication problem occurs,
these LEDs can help you determine the cause of the problem.
LED
ITU-T
DIN
Description
PWR
-
-
Indicates that the modem is powered on and
functions correctly.
DSR
106
M1
(Not present on LLM-336D)
DSR on, indicates that the modem is ready for
operation. DSR is off when the modem is in
configure mode.
DTR
108
S1
Follows the state of the DTR interface signal
coming from the connected DTE. The DTE
(attached device) activates the DTR to signal that
its serial port is ready for communication.
TxD*
103
D1
Flashes when the modem receives data from the
connected DTE.
RxD*
104
D2
Flashes when the modem receives data from the
remote modem.
RTS
105
S2
(Not present on LLM-336D)
Follows the state of the RTS interface signal
coming from the connected DTE.
At half-duplex operation, the DTE activates RTS to
signal that it is ready to send data to the modem.
At full-duplex operation, the DTE activates RTS to
signal that it is ready for receiving data from the
modem. (Circuit 133 mode).
CTS
106
M2
(Not present on LLM-336D)
Follows the state of the modem CTS interface
signal. The modem activates CTS to signal that it
is ready to receive data from the DTE.
DCD
109
S5
Follows the state of the modem DCD interface
signal. The modem activates DCD to signal that a
valid carrier is received from the remote modem.
Notes:
At high data rates, short bursts of data may not be visible at the TxD and RxD
LEDs
DTE stands for Data Terminal Equipment, a generic expression for computer,
RTU or any terminal equipment connected to the modem via the serial port.
When the RS485 interface is used, only the TxD and RxD signals are controlled
Front panel layout
of LLM-336R and
LLM-336S

Leased Line Data Modem LLM-336 User Guide – Hardware Details and Installation
Page 2-3
Switches and jumpers
At the LLM-336D, the dipswitches are located at the side of the housing. For
reaching the RS485 jumper inside the LLM-336D housing, release the 4 screws
at the bottom of the housing.
Fig. 3 Switches of the LLM-336D
Fig. 4 Switches and RS485 jumper of LLM-336D
For reaching the dipswitches and RS485 jumper of the LLM-336R or LLM-336S,
the modem card must first be removed from the card frame or desktop housing
by releasing the front panel screws.
Fig. 5 Switches and RS485 jumper of LLM-336S and LLM-336R

User Guide – Hardware Details and Installation Leased Line Data Modem LLM-336
Page 2-4
This switch can be used to reset or restart the modem.
This jumper is used to select 2-wire RS485 or 4-wire RS485/422.
When the jumper is in position 1-2, both 2-wire and 4-wire Rx terminals can
receive RS485 data. When the jumper is in position 2-3 only the 4-wire Rx
terminals can receive data.
JP1
Pos 1-2*
Pos 2-3
2-wire RS485 4-wire RS485/RS422
Note: JP1 Position 1-2 can be used for both 2-wire and 4-wire RS485
Switch
ON
OFF
DS1.1-DS1.6 See table 3, operating modes
DS1.7 Configure mode Modem mode
DS1.8 S92 Tx Level* S91 Tx Level*
Note: See page 3-12
Switch
ON
OFF
DS2.1
4-wire operation
2-wire operation
DS2.2
2-wire operation
4-wire operation
DS2.3
4-wire Rx line terminated with 600 Ω
4-wire Rx line terminated with 5000 Ω
DS2.4
4-wire operation
2-wire operation
DS2.5
Controlled impedance (note 1)
Fixed impedance
DS2.6
Reserved
Reserved (keep Off)
DS2.7
Originate mode (note 2)
Answer mode
DS2.8
Monitor speaker always on (note 3,4)
Monitor speaker off
Line type
DS2.1
DS2.2
DS2.3
DS2.4
DS2.5
DS2.6
2-wire, fixed 600Ω
Off
On
Off
Off
Off
Off
4-wire, fixed 600Ω
On
Off
On
On
Off
Off
2-wire, controlled impedance
Off
On
Off
Off
On
Off
4-wire, controlled Tx impedance
On
Off
Off
On
On
Off
Table 2. Line connection modes
Note 1. Controlled impedance is used for multi-drop operation on a non-
conditioned copper cable. In 2-wire controlled impedance mode, when
transmitting (RTS on), the impedance is 600 Ω .
When receiving (RTS off), the impedance is 5000 Ω .
In 4-wire controlled Tx impedance mode only the impedance of the TX pair is
switched. The RX impedance shall be set to “high” by setting DS2.3 to OFF.
Note 2. For V.34, V.32(bis), V22(bis and V.21) operation one modem must be
set to originate mode and the other to answer mode.
Note 3. The monitor speaker can be switched On or Off during operation.
Note 4. In 4-wire line connection mode, the monitor speaker only makes the
receive signal audible.
SW1, Reset Switch
JP1, RS485 mode
DS1, Dip-switch 1
DS2, Dip-switch 2