Codan 3212 User Manual

HF Data Modem

3212

HF RADIO COMMUNICATIONS

USER GUIDE

No part of this guide may be reproduced, transcribed or
translated into any language or transmitted in any form
whatsoever without the prior written consent of Codan
Limited.

© Copyright 2008 Codan Limited.

Codan part number 15-04146-EN Issue 1, December 2008

®

NGT

and CALM® are registered trademarks of Codan
Limited. Other brand, product, and company names
mentioned in this document are trademarks or registered
trademarks of their respective holders.

Modem software © Copyright 1995–2004 SPIRIT.

The English version takes precedence over any translated
versions.

Table of contents

Introduction

Overview of this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1Overview

The 3212 HF Data Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

The front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

The rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2 Installation and setup

Unpacking the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

System requirements for a 3212 data station . . . . . . . . . . . . . . . . . . . . . . . 13

General assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Installing the 3212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Connecting the 3212 to the transceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Setting up the transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Connecting the 3212 to the PC via the Data connector . . . . . . . . . . . . . . . 23

Setting up the Ethernet interface using the serial connection. . . . . . . . . . . 25

Connecting the 3212 to the PC via the Ethernet ports . . . . . . . . . . . . . . . . 27

Connecting the 3212 directly to the PC using a crossover

Ethernet cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Connecting the 3212 indirectly to the PC (via an Ethernet

switch) using a straight-through Ethernet cable . . . . . . . . . . . . . . . . . . 29

Setting up the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Testing communication between the 3212 and PC. . . . . . . . . . . . . . . . . . . 33

Setting up the 3212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Testing basic communication between two nodes . . . . . . . . . . . . . . . . . . . 37

Testing communication between the 3212 and transceiver . . . . . . . . . . . . 39

HF Data Modem 3212 User Guide i

Table of contents

3 Operating the 3212

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

LED indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Controlling the 3212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Operating the 3212 using AT commands . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Switching to local command mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Returning to on-line mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Operating the 3212 using HF-specific application software . . . . . . . . . . . . 49

Making a manual data call. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Making a data call using a specific channel . . . . . . . . . . . . . . . . . . . . . . . . 52

Making a data call in an ALE/CALM network . . . . . . . . . . . . . . . . . . . . . . 54

Resetting to factory defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Using the on-line help in the 3212. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Appendix A—AT command set

Appendix B—Connectors

Data connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Service connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Transceiver connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Ethernet connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Appendix C—Specifications

Appendix D—Factory-default settings

Appendix E—Initialisation strings

UUPlus© . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

ii HF Data Modem 3212 User Guide

Appendix F—Compliance

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

European R&TTE Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

EMC and safety notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

FCC compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Appendix G—Definitions

Standards and icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Acronyms and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Unit multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

About this issue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Index

Table of contents

HF Data Modem 3212 User Guide iii

Table of contents

This page has been left blank intentionally.

iv HF Data Modem 3212 User Guide

List of figures

Figure 1: Typical NGT data station . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2: Typical 2110 data station . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3: Front panel of the 3212. . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4: Rear panel of the 3212 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 5: Installation and setup process. . . . . . . . . . . . . . . . . . . . . 17

Figure 6: NGT SRx or MR (2012 RF Unit) to 3212. . . . . . . . . . . . 18

Figure 7: NGT AR, SR, or ASR (2010 RF Unit and 2030

Junction Box) to 3212 . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 8: 2110/2110M Manpack Transceiver and interface

adaptor to 3212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 9: 2110/2110M Manpack Transceiver to 3212. . . . . . . . . . 20

Figure 10: Connecting the 3212 to the PC via the Data

connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 11: Connecting the 3212 directly to the PC via the

Ethernet ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 12: Connecting the 3212 indirectly to the PC via an

Ethernet switch (with or without a DHCP server) . . . . . 29

Figure 13: Front view of the Data connector . . . . . . . . . . . . . . . . . . 70

Figure 14: Front view of the Service connector. . . . . . . . . . . . . . . . 71

Figure 15: Front view of the Transceiver connector . . . . . . . . . . . . 72

Figure 16: Front view of the Ethernet connector . . . . . . . . . . . . . . . 74

HF Data Modem 3212 User Guide v

List of figures

This page has been left blank intentionally.

vi HF Data Modem 3212 User Guide

List of tables

Table 1: LED indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 2: AT commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Table 3: AT S-register commands . . . . . . . . . . . . . . . . . . . . . . . . 67

Table 4: Pinouts for the Data connector . . . . . . . . . . . . . . . . . . . . 70

Table 5: Pinouts for the Service connector. . . . . . . . . . . . . . . . . . 71

Table 6: Pinouts for the Transceiver connector . . . . . . . . . . . . . . 72

Table 7: Pinouts for the Ethernet connector . . . . . . . . . . . . . . . . . 74

Table 8: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Table 9: Factory-default settings for the 3212 . . . . . . . . . . . . . . . 77

Table 10: Earth symbol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

HF Data Modem 3212 User Guide vii

List of tables

This page has been left blank intentionally.

viii HF Data Modem 3212 User Guide

Introduction

Thank you for purchasing a Codan 3212 HF Data Modem.
With this great product and Codan’s supreme after-sales
support, you can look forward to many years of reliable HF
data communication. Please read this guide thoroughly and
retain it for future reference. There is an index at the end of
this guide to assist you in finding information.

Overview of this guide

This guide is for:

• technicians who install the hardware

• system administrators who set up how the HF data

communication system interacts with other equipment

• end-users of the 3212

It provides instructions on how to connect and set up a
3212 HF Data Modem with a Codan HF transceiver that is
capable of high-speed data transfer.

This guide assumes that the system administrator is familiar
with setting up HF communication systems for the Codan
NGT series Transceiver and 2110 series Manpack Transceiver.

This guide contains the following sections:

Section 1 Overview—provides an overview of the

3212 HF Data Modem, how it is used within a
data communication system, how data flows
through the system, and a brief description of
the front and rear panels

Section 2 Installation and setup—describes how to

connect the Codan 3212 data system together,
how to set up the individual components of the
system, and how to test that the system is
functional

HF Data Modem 3212 User Guide 1

Introduction

Section 3 Operating the 3212—describes the LED

indications on the front panel of the 3212, how
to make data calls, and how to access the on-line
help

Appendix A AT command set—describes the typical AT

commands that may be used with the 3212

Appendix B Connectors—provides the details of connectors

on the 3212

Appendix C Specifications—provides the common

specifications for the 3212

Appendix D Factory-default settings—provides a list of the

default settings for the 3212

Appendix E Initialisation strings—contains initialisation

strings for specific third-party HF application
software

Appendix F Compliance—provides compliance information

and safety notices for the 3212

Appendix G Definitions—explains the terms and

abbreviations used in this guide

2 HF Data Modem 3212 User Guide

1 Overview

This section contains the following topics:

The 3212 HF Data Modem (4)

The front panel (8)

The rear panel (9)

HF Data Modem 3212 User Guide 3

Overview

The 3212 HF Data Modem

The 3212 HF Data Modem provides a robust method of data
communication over an HF path. The data station may be
installed in a base station or a vehicle. Data stations that use
the 2110 Manpack Transceiver may be completely portable in
a backpack. If a base data station is connected to the internet,
this station may be used as a gateway for application software
that provides email, chat, and FTP services.

A standard Codan HF data station (or node) comprises:

• a Codan HF transceiver that is capable of high-speed
data transfer

• an antenna system

• an appropriate 12 V DC power supply

• a 3212 HF Data Modem

• a PC with terminal software or application software that
provides email, chat, and FTP services

The 3212 HF Data Modem can operate with a
data-capable Codan HF transceiver that is not

NOTE

A typical installation uses either:

• a connection between a serial COM port on the PC and
the Data connector on the 3212 (see page 23,

Connecting the 3212 to the PC via the Data connector),

or

• an Ethernet connection between the PC and the 3212 (see

page 27, Connecting the 3212 to the PC via the Ethernet

ports)

4 HF Data Modem 3212 User Guide

optimised for high-speed data transfer, however
it will operate below the maximum possible
data transfer rate.

Figure 1: Typical NGT data station

to 12 V DC

power supply

H
F

D

a
t

a
M

o
d
e

m

T
h

r
o

u
g

h
p

u
t

S
e

r
i
a

l
N

o
.

T
y

p
e

3
2

1
2

T
x

L
i

n
k

3212 HF Data Modem

Codan HF transceiver

(NGT SRx shown)

PC with chat, FTP, email

application software,

or terminal software

antenna system

Overview

HF Data Modem 3212 User Guide 5

Overview

H
F

D
a

ta

M

o
d

e

m

T

h

r
o
u

g

h
p

u
t

S
e

r
i
a

l
N

o
.

T
y

p
e

3
2

1
2

T
x

L
in

k

3212 HF Data Modem

Codan HF transceiver

(2110 Manpack shown)

antenna

system

PC with chat, FTP, email

application software,

or terminal software

Figure 2: Typical 2110 data station

Signal flow

Data is passed from the application or terminal software to the

3212. It is processed by the 3212 then sent to the Codan HF

transceiver for transfer via HF to the transceivers in the data
communication system. At the receiving node, the data is
passed from the transceiver to the 3212, where it is decoded,
ready for presentation at the remote PC. Figure 1 on page 5
shows a typical layout for an HF data communication system.

If the transceivers are set to the same channel when a call is
started from the application or terminal software, only the
addressed 3212 processes the data call. If the transceiver is
scanning at the time when the data call is started, the
transceiver selects an ALE/CALM network for the call. For
more information on making and receiving data calls see

page 50, Making a manual data call.

6 HF Data Modem 3212 User Guide

Overview

Power supply

The 3212 HF Data Modem is powered via its connection to
the Codan HF transceiver. When the Codan HF transceiver is
switched on, the connected 3212 is also switched on.

Interoperability

The 3212 HF Data Modem uses a high-speed waveform to
communicate with other 3212 HF Data Modems. This
waveform is based on the STANAG 4539 waveform, which
has been modified for commercial use. This waveform
transports data in conjunction with a STANAG 5066 protocol
layer. If there is a Codan 3012 HF Data Modem in the data
communication system, set the 3212 to the 3012 compatibility
mode (see page 35, Setting up the 3212). When the 3212 is set
to the high-speed waveform, it will not communicate with a
3012 HF Data Modem.

When the 3212 HF Data Modem is set to 3012 compatibility
mode, and it connects to a remote 3212, the data modems both
use the high-speed waveform.

NOTE

HF Data Modem 3212 User Guide 7

The default setting for the 3212 is the 3012
compatibility mode.

Overview

HF Data Modem

Throughput

Serial No.

Type 3212

TxLink

The front panel

The front panel of the 3212 HF Data Modem comprises three
LEDs and a Throughput indicator. For information on the
meaning of each LED see page 43, LED indications.

Figure 3: Front panel of the 3212

8 HF Data Modem 3212 User Guide

The rear panel

Data Service Transceiver

Ethernet

N101N101N101N101N101

LAN activity

LED

LAN link

status LED

The rear panel of the 3212 has a standard RJ45 Ethernet
connector and three D-type connectors. For information on
connector pinouts see page 69, Connectors.

Figure 4: Rear panel of the 3212

Overview

The Data connector provides a connection between the 3212
and a serial COM port on the PC. This enables the operator to
control the data port via suitable application or terminal
software.

The Service connector is available for use by Codan service
personnel only.

The Transceiver connector provides the power, data and
control connection between the 3212 and the Codan HF
transceiver.

The Ethernet connector provides a standard IP Ethernet
connection between the 3212 and the PC. This enables the
operator to control the data port via suitable application or
terminal software. The connector has two LEDs: one for LAN
activity, the other for the status of the link to the LAN.

HF Data Modem 3212 User Guide 9

Overview

This page has been left blank intentionally.

10 HF Data Modem 3212 User Guide

2 Installation and setup

This section contains the following topics:

Unpacking the equipment (12)

System requirements for a 3212 data station (13)

General assumptions (15)

Installing the 3212 (16)

Connecting the 3212 to the transceiver (18)

Setting up the transceiver (21)

Connecting the 3212 to the PC via the Data connector (23)

Connecting the 3212 to the PC via the Ethernet ports (27)

Setting up the PC (31)

Testing communication between the 3212 and PC (33)

Setting up the 3212 (35)

Testing basic communication between two nodes (37)

Testing communication between the 3212 and transceiver (39)

HF Data Modem 3212 User Guide 11

Installation and setup

Unpacking the equipment

On receiving your 3212 HF Data Modem, check the contents
against the packing list. Make sure that all equipment itemised
on the packing list is present and that there is no damage to the
equipment before you start installing the 3212 into your HF
data communication system.

If anything is missing or damaged, please contact your nearest
Codan office immediately to obtain the correct warranty
service procedures. This ensures prompt assistance, minimal
turnaround time, and avoids any freight issues.

We recommend that the equipment is installed by qualified
and experienced personnel, to any relevant standards and
approvals.

12 HF Data Modem 3212 User Guide

Installation and setup

System requirements for a 3212 data station

Firmware requirements for the transceiver

The firmware requirement for a Codan HF transceiver is
V4.33 or later.

Hardware requirements for the NGT series Transceiver

The hardware requirements for the NGT series Transceiver
are:

Description Codan part number

High-speed data 15-10541-000

Fan 15-10469-000

NGT AR, SR, and ASR Transceivers with build standard Z, and
NGT SRx Transceivers with build standard E, have hardware
that is compatible for operation with the 3212 HF Data
Modem.

The build standard is indicated by the fifth digit

NOTE

If you are upgrading an existing NGT series Transceiver for
operation with a 3212 HF Data Modem, you should confirm
that it has:

• RF/IF PCB 07-01961-07 (or later), and

• Filter & Control PCB 07-01967-05 (or later)

HF Data Modem 3212 User Guide 13

from the right in a 12-digit serial number. The
build standard is indicated by the first digit in a
6-digit serial number.

Installation and setup

Hardware requirements for the 2110 series Manpack Transceiver

The following 2110 series Manpack Transceivers are
compatible for operation with the 3212 HF Data Modem:

• 2110 Manpack Transceivers with build status F and
serial number 6BxxxxxFxxxx or later

• 2110 Manpack Transceivers with build status G

• 2110M Manpack Transceivers with build status A

NOTE

The build standard is indicated by the fifth digit
from the right in a 12-digit serial number.

If you are upgrading a 2110 series Manpack Transceiver that
has an earlier serial number, you must check that the build
standard of the RF/IF PCB is 07-02012-04 (or later). Contact
your Codan representative for assistance, if required.

14 HF Data Modem 3212 User Guide

General assumptions

These installation instructions assume the following:

• The Codan HF transceiver, which is capable of high­speed data transfer, has an appropriate power supply and
antenna system connected, and all modules within the
transceiver system are functioning correctly.

• The HF data communication system is planned.

• If the 3212 and PC at a node are connected directly via
their Ethernet ports and DHCP is disabled, there must be
an IP address assigned to both the 3212 and the PC.
These IP addresses must use the same subnet.

• If the 3212 and PC at a node are connected indirectly via
their Ethernet ports and an Ethernet switch, and DHCP is
disabled, there must be an IP address assigned to both the
3212 and the PC. These IP addresses must use a different
subnet.

NOTE

Installation and setup

IP addresses should be assigned by a
system administrator who is knowledgable
in IP addressing and networking.

Once installed and set up as required for the particular
configuration, you should not need to alter any of the settings
for the 3212.

NOTE

HF Data Modem 3212 User Guide 15

Factory-default settings for the 3212 are
provided on page 77.

Installation and setup

Installing the 3212

The 3212 HF Data Modem is connected via the Transceiver
connector on the rear panel to the 15-way or 19-way connector
on the Codan HF transceiver (see page 18, Connecting the

3212 to the transceiver).

The 3212 HF Data Modem may be connected to a PC in one
of two different configurations:

• via a serial connection (see page 23, Connecting the

3212 to the PC via the Data connector)

• via an Ethernet connection (see page 27, Connecting the

3212 to the PC via the Ethernet ports)

NOTE

Use a USB-to-serial-port cable to create a serial
COM port if your PC has USB ports only. This
cable may be ordered from Codan (Codan part
number 78-01031). You may also create a serial
port using commercially available adaptors or
PC cards.

16 HF Data Modem 3212 User Guide

Figure 5: Installation and setup process

Install transceiver, power supply, and antenna

Connect transceiver to 3212,

then set up transceiver

Connect PC to Data connector on 3212,

then set up serial interface

Set up Ethernet interface on 3212

Direct connection

without DHCP

Indirect connection

without DHCP

Indirect connection

with DHCP

Set up PC on same

subnet as 3212

Connect PC to 3212 using

crossover Ethernet cable

Connect PC and 3212 to

network using straight-

through Ethernet cables

Connect PC and 3212 to

network using straight-

through Ethernet cables

Enable DHCP in 3212

3212 ready for use

Test communication between PC and 3212

Test communication and control

between nodes

Disable DHCP in 3212, then set up

IP address, subnet and gateway

Set up PC to obtain IP

automatically

Set up 3212

Set up PC on different

subnet from 3212

See page 37 and page 39

See page 35

See page 31 See page 32

See page 27 See page 29 See page 29

See page 26 See page 26

See page 25

See page 23

See page 18 and page 21

See page 33

See Figure 11 on See Figure 12 on See Figure 12 on

See page 31

Installation and setup

HF Data Modem 3212 User Guide 17

Installation and setup

to antenna

tuner

earth braid

NGT SRx or MR (2012 RF Unit)

with fan

NGT SRx or MR (2012 RF Unit)

with fan

NGT SRx or MR (2012 RF Unit)

with fan

NGT SRx or MR (2012 RF Unit)

with fan

to antenna

to power

supply

to 3212

to handset

and speaker

08-06356-00x

Connecting the 3212 to the transceiver

To connect the 3212 to the Codan HF transceiver:

1 Ensure the transceiver is switched off.
1 Do one of the following:

• Connect cable 08-06356-00x between the

Transceiver connector on the 3212 and the 15-way
connector on the NGT series Transceiver (see Figure 6
or Figure 7) or interface adaptor (2110/2110M only, see

Figure 8).

Depending on the type of Codan HF

NOTE

• Connect cable 08-06786-00x between the

Transceiver connector on the 3212 and the 19-way
connector on the front panel of the 2110/2110M
Manpack Transceiver (see Figure 9).

transceiver, the 15-way connector may
be on a flying lead from the RF unit or
located on the junction box.

You should only use the cables provided

NOTE

with the 3212 HF Data Modem to ensure
optimal performance.

Figure 6: NGT SRx or MR (2012 RF Unit) to 3212

18 HF Data Modem 3212 User Guide

Installation and setup

2030 Junction Box

to antenna

to power

supply

to antenna

tuner

NGT AR, SR, or ASR (2010 RF Unit)

with fan

to 3212

to handset

earth braid

08-06356-00x

to charger

to antenna control

to external

speaker

to 3212

08-06356-00x

Interface AdaptorInterface AdaptorInterface AdaptorInterface Adaptor

2110/2110M Manpack Transceiver2110/2110M Manpack Transceiver2110/2110M Manpack Transceiver2110/2110M Manpack Transceiver

Figure 7: NGT AR, SR, or ASR (2010 RF Unit and 2030 Junction Box) to 3212

Figure 8: 2110/2110M Manpack Transceiver and interface adaptor to 3212

HF Data Modem 3212 User Guide 19

Installation and setup

to 3212

08-06786-00x

1

QZ

TUNE

Tx

PWR

6

5

JKL MNO

MODE

DEF

3

2

ABC

CLAR

Rx

FREE

4

GHI

7

PRS

8

TUV

SEC

EASI
TALK

CALL
LOGS

GPS

9

WXY

VIEW

0

Figure 9: 2110/2110M Manpack Transceiver to 3212

20 HF Data Modem 3212 User Guide

Setting up the transceiver

For information on how to make changes to the

NOTE

If the Codan HF transceivers in your data communication
system have identical networks, and scan the same number of
channels, then the default settings for call detect time and
nominal preamble are suitable (see below). If the transceivers
are scanning a different number of networks and channels,
then the call detect time and nominal preamble for each
transceiver must be calculated individually. For more
information on setting up your networks, see the Reference
Manual provided with the Codan HF transceiver.

To set up the transceiver:

setup of the Codan HF transceiver see the
documentation provided with the transceiver.

1 Switch on the transceiver.
1 Access the Control List in the transceiver.

Installation and setup

1 Do one of the following:

• In the NGT series Transceiver, set the RS232 15way

Mode entry to Modem Hold AGC, and the RS232
15way Speed entry to 9600.

• In the 2110/2110M Manpack Transceiver, set the

RS232 Mode entry to Modem Slow AGC, and the
RS232 Speed entry to 9600.

1 In an ALE/CALM network that is used for data calls via

the Codan HF transceiver, do the following:

• Set the Scan Network entry to Scan.

• Set the Call Detect Time entry to <default>.

• Set the Nominal Preamble entry to <default>.

• Check that the name of the network is first in
alphabetical order of all scan-enabled ALE/CALM
networks in the transceiver.

HF Data Modem 3212 User Guide 21

Installation and setup

1 In a Codan Selcall, Open Selcall, or Voice Only network

that is used for data calls via the Codan HF transceiver,
do the following:

• Set the Scan Network entry to Scan.

• Set the Call Detect Time entry to a minimum of

0.6 seconds per channel.

• Set the Nominal Preamble entry to <default>.

• Check that the name of each channel is a number in the
range 1 to 9999, without leading zeros.

If a channel is specified using the
ATD<address>!<channel name>

NOTE

• Check that these channels are added to the network.

command, or a list of channels is set up
using the AT&C command, only
numbers can be entered with the
command.

1 Switch off the transceiver.

22 HF Data Modem 3212 User Guide

Installation and setup

to NGT transceiver

or interface adaptor

08-06356-00x

serial cable

08-06359-00x

Data Service Transceiver

Ethernet

N101N101N101N101N101

Data Service Transceiver

PC

3212 HF Data Modem3212 HF Data Modem3212 HF Data Modem3212 HF Data Modem

to 2110 transceiver

08-06786-00x

Connecting the 3212 to the PC via the Data connector

This type of connection requires you to:

• connect the 3212 to the PC

• save the settings for the serial COM port

Figure 10 shows the connection required between the 3212

and the PC when they are connected via the Data connector.

NOTE

The 3212 automatically detects the data rate set
in the PC and adjusts its data rate accordingly.

Figure 10: Connecting the 3212 to the PC via the Data connector

For information on connecting the 3212 to the

NOTE

transceiver see page 18, Connecting the 3212 to

the transceiver.

HF Data Modem 3212 User Guide 23

Installation and setup

To connect the 3212 to the PC:

1 Connect the Data connector on the 3212 to a serial COM

port on the PC using a 9-way to 9-way serial cable
(Codan part number 08-06359-00x).

1 At the PC, start a terminal session on the Data connector

of the 3212 using the following settings for the serial
COM port.

Data rate: Any (start with 115200 bps)

Data bits: 8

Parity: None

Stop bits: 1

Flow control: None

1 Save the details of the terminal session for future use.

24 HF Data Modem 3212 User Guide

Installation and setup

Setting up the Ethernet interface using the serial connection

If you are using the 3212 directly out of the box,
the default settings are:

•DHCP disabled

• IP address of 3212: 192.168.3.212

• subnet mask: 255.255.255.0

NOTE

NOTE

• default gateway: 192.168.3.1

You can set up your PC accordingly so that you
can communicate directly with the data modem
using the Ethernet connection (see page 31,

Entering an IP address and subnet mask for the
PC).

Check that your HF-specific application
software that provides email, chat, and FTP
services is compatible with Ethernet operation.

If you intend to use the Ethernet interface for data
communication, you must set up the Ethernet interface on the
3212 using the serial connection on the Data connector, if the
default settings are not suitable. Depending on the type of
connection you are making, you may have to set up IP
information for the modem or enable/disable DHCP. For more
information see the installation and setup process in

Figure 5 on page 17 and the connection diagrams in
Figure 11 on page 28 and Figure 12 on page 29.

You may disconnect the temporary serial

NOTE

NOTE

HF Data Modem 3212 User Guide 25

connection between the 3212 and the PC when
the Ethernet interface has been set up.

When the data port on the Ethernet connection
is enabled, the data port on the serial connection
is disabled.

Installation and setup

Disabling DHCP and entering an IP address, subnet mask, and gateway for the 3212

The default IP address for the 3212 is

192.168.3.212.

NOTE

To disable DHCP and enter an IP address, subnet mask, and
gateway for the 3212:

The default subnet mask for the 3212 is

255.255.255.0.

The default gateway for the 3212 is

192.168.3.1.

1 In the terminal session for the Data connector, enter the

following commands:

AT*I0,"<IP address of 3212>","<subnet mask of
3212>","<default gateway>"

For example, enter
AT*I0,"10.0.0.20","255.255.254.0","10.0.0.1"

If you are communicating with a data
modem that is straight out of the box, this

NOTE

command may be entered using a TCP/IP
terminal session over the Ethernet
connection.

Enabling DHCP in the 3212

To enable DHCP in the 3212:

1 In the terminal session for the Data connector, enter the

following command:

AT*I1

26 HF Data Modem 3212 User Guide

Installation and setup

Connecting the 3212 to the PC via the Ethernet ports

The Ethernet connection between the 3212 and the PC can be
made in two ways:

• directly, using a crossover Ethernet cable (see

Figure 11 on page 28)

• indirectly, via an Ethernet switch, using a straight-

through Ethernet cable (see Figure 12 on page 29)

A ferrite bead (Codan part number

NOTE

Connecting the 3212 directly to the PC using a crossover Ethernet cable

39-79150-080) must be attached to the Ethernet
cable as close as possible to the Ethernet
connector on the 3212.

This type of connection requires you to:

• set up the Ethernet interface in the 3212 (see page 25,

Setting up the Ethernet interface using the serial
connection)

• connect the 3212 to the PC via the Ethernet ports

HF Data Modem 3212 User Guide 27

Installation and setup

crossover Ethernet cable

67-90800 (2 m)

67-90801 (10 m)

Data Service Transceiver

Ethernet

N101N101N101N101N101

Data Service Transceiver

temporary serial

connection during
set up of Ethernet

interface

08-06359-00x

3212 HF Data Modem3212 HF Data Modem3212 HF Data Modem3212 HF Data Modem

PC

to NGT transceiver

or interface adaptor

08-06356-00x

to 2110 transceiver

08-06786-00x

Figure 11: Connecting the 3212 directly to the PC via the Ethernet ports

For information on connecting the 3212 to the

NOTE

transceiver see page 18, Connecting the 3212 to

the transceiver.

To connect the 3212 directly to the PC:

1 Connect a crossover Ethernet cable between the

Ethernet connector on the 3212 and the Ethernet
connector on the PC.

The following crossover CAT5e Ethernet
cables are available from Codan:

NOTE

28 HF Data Modem 3212 User Guide

1 Attach a ferrite bead (Codan part number 39-79150-080)

to the Ethernet cable as close as possible to the Ethernet
connector on the 3212.

• 2 m cable (Codan part number 67-90800)

• 10 m cable (Codan part number
67-90801)

Installation and setup

straight-through Ethernet cable

67-90802 (2 m)

67-90803 (10 m)

Ethernet switch

with or without

DHCP server

temporary serial

connection during
set up of Ethernet

interface

08-06359-00x

Data Service Transceiver

Ethernet

N101N101N101N101N101

Data Service Transceiver

PC

3212 HF Data Modem3212 HF Data Modem3212 HF Data Modem3212 HF Data Modem

to NGT transceiver

or interface adaptor

08-06356-00x

to 2110 transceiver

08-06786-00x

1 Switch on the PC and the transceiver, then wait until the

3212 has initialised.

NOTE

The LED changes to solid green when
the 3212 is ready for operation.

Connecting the 3212 indirectly to the PC (via an Ethernet switch) using a straight-through Ethernet cable

This type of connection requires you to:

• set up the Ethernet interface in the 3212 (see page 25,

Setting up the Ethernet interface using the serial
connection)

• connect the 3212 and PC to a common Ethernet switch
(with or without a DHCP server) via the Ethernet ports

Figure 12: Connecting the 3212 indirectly to the PC via an Ethernet switch (with or without a DHCP server)

HF Data Modem 3212 User Guide 29

Installation and setup

For information on connecting the 3212 to the

NOTE

To connect the 3212 to the PC via an Ethernet switch:

transceiver see page 18, Connecting the 3212 to

the transceiver.

1 Connect a straight-through Ethernet cable between the

Ethernet connector on the 3212 and an Ethernet
network point.

1 Connect a straight-through Ethernet cable between the

Ethernet port on a PC and an Ethernet network point.

The following straight-through CAT5e
Ethernet cables are available from Codan:

NOTE

• 2 m cable (Codan part number 67-90802)

• 10 m cable (Codan part number
67-90803)

1 Attach a ferrite bead (Codan part number 39-79150-080)

to the Ethernet cable as close as possible to the Ethernet
connector on the 3212.

1 Switch on the PC and the transceiver, then wait until the

3212 has initialised.

NOTE

30 HF Data Modem 3212 User Guide

The LED changes to solid green when
the 3212 is ready for operation.

Setting up the PC

If you intend to use the Ethernet interface for data
communication, you must set up the Ethernet interface on the
PC once the Ethernet cable is connected. Depending on the
type of connection you are making, you may have to set up IP
information for the PC. For more information see the
installation and setup process in Figure 5 on page 17 and the
connection diagrams in Figure 11 on page 28 and Figure 12 on

page 29.

Installation and setup

The options that you see below depend upon the
version of Microsoft Windows

NOTE

Entering an IP address and subnet mask for the PC

NOTE

To set up the PC for operation with the 3212:

installed (Windows
For more information on this topic see the
on-line help provided for Windows

DHCP must be disabled in the 3212. For more
information see page 26, Disabling DHCP and

entering an IP address, subnet mask, and
gateway for the 3212.

®

XP is described below).

®

that you have

®

.

1 In Windows, from the Start menu, select Control

Panel—Network Connections.

1 Double-click on the Local Area Connection that is

applicable to the Ethernet connection from your PC to
the 3212.

1 Click on Properties.
1 Scroll through the listed components used by this

connection, select Internet Protocol (TCP/IP), then
click on Properties.

HF Data Modem 3212 User Guide 31

Installation and setup

1 Select Use the following IP address, then do one of

the following:

• If the PC is connected directly to the 3212, enter an IP
address that uses the same subnet as the 3212, for
example, 10.0.0.11.

• If the PC and 3212 are connected indirectly via an
Ethernet switch, enter an IP address that uses a
different subnet as the 3212, for example, 10.0.1.11

1 Enter an appropriate subnet mask, for example,

255.255.254.0.

1 Click on OK.

Setting up the PC to automatically obtain an IP address

DHCP must be enabled in the 3212. For more

NOTE

information see page 26, Enabling DHCP in the

3212.

To set up the PC for operation with the 3212:

1 In Windows, from the Start menu, select Control

Panel—Network Connections.

1 Double-click on the Local Area Connection that is

applicable to the Ethernet connection from your PC to
the 3212.

1 Click on Properties.
1 Scroll through the listed components used by this

connection, select Internet Protocol (TCP/IP), then
click on Properties.

1 Select Obtain an IP address automatically.
1 Click on OK.

32 HF Data Modem 3212 User Guide

Installation and setup

Testing communication between the 3212 and PC

NOTE

To test that the 3212 and PC are communicating:

If you are testing an Ethernet connection, you
need to know the IP address of the 3212.

1 Switch on the PC and the transceiver, then wait until the

3212 has initialised.

NOTE

The LED changes to solid green when
the 3212 is ready for operation.

1 Do one of the following:

• For an Ethernet installation, start a terminal session
using a TCP/IP connection and the following
information:

Field Enter...

Host address <IP address of 3212>,

for example, 192.168.3.212

Port number <base port of 3212>,

for example, 50000

The host address listed above is the default

NOTE

• For a serial COM port connection, start the terminal
session that was set up during installation (see page 23,

Connecting the 3212 to the PC via the Data
connector).

HF Data Modem 3212 User Guide 33

IP address for the 3212. The port number
listed above is the default base port for the

3212.

Installation and setup

1 In the terminal session, type AT &V, then press Enter.

A report from the 3212 is displayed in the terminal
session.

The 3212 is communicating with the PC.

34 HF Data Modem 3212 User Guide

Setting up the 3212

To set up the 3212:

1 Enter any of the following commands via a terminal

session on the data port to set up the 3212 for daily
operation, as required.

Command Comment

Installation and setup

AT&I=<address of 3212>
for example, AT&I=54321

ATE1 Sets local echo on.

AT%M0 Sets 3012 compatibility mode.

AT%M1 Sets the high-speed waveform and ignores

AT&A1 Sets automatic answering of calls.

AT&C=<channel name>,

<channel name>,<channel name>,
<channel name>,<channel name>
for example, AT&C=7,8,5,6,1

AT&W Saves these settings to memory in the 3212.

Sets the address of the 3212. This address
should be different from the self address
assigned to the transceiver.

Do not use a self address that ends in 00.
This address is reserved for broadcast calls.

This address is used by other data modems
with the ATD<address> command to make
connections to this 3212.

any communications from a 3012.

Sets the list of channels that are used during
a non-ALE call by a 3212 that is set to 3012
compatibility mode.

Up to 5 channels may be allocated to this
list using the AT&C command.

For information on other AT commands that may be used with
the 3212 see page 59, AT command set.

HF Data Modem 3212 User Guide 35

Installation and setup

NOTE

You do not have to enter a separate STANAG
address for the 3212. During calls made in an
ALE/CALM network, the self address of the
3212 is converted into an appropriate form for
use by the STANAG 5066 Stack.

36 HF Data Modem 3212 User Guide

Installation and setup

Testing basic communication between two nodes

To test data communication between two nodes:

1 Check that the transceiver and 3212 at each node are

switched on.

1 Make a Selective call from one transceiver to another,

using the Selcall and/or ALE/CALM networks that you
have set up for the data calls.

This confirms that the transceivers are able to
communicate with each other using the settings in the
networks.

1 Check that the data modems are using a common

compatibility mode.

1 Set the transceivers to a common channel.
1 Do one of the following:

• If your 3212 and PC are connected via the Ethernet
ports, open a TCP/IP terminal session on the data port
(for help see page 33, Testing communication between

the 3212 and PC).

• If your 3212 and PC are connected via the Data
connector, open a terminal session on the serial COM
port that is connected to the Data connector (for help
see page 23, Connecting the 3212 to the PC via the

Data connector).

1 In the terminal session at one node, type ATD<address

of the remote 3212>, then press Enter.

For example, type ATD54321.

Wait for the text RING to appear in the terminal session
at the second node, indicating that it has received the data
call request from the first node.

HF Data Modem 3212 User Guide 37

Installation and setup

1 Type ATA 3 in the terminal session at the node addressed

in the ATD command, then press Enter.

Wait for the text NO CARRIER to appear in both
terminal sessions.

1 Repeat this test in the other direction.

38 HF Data Modem 3212 User Guide

Installation and setup

Testing communication between the 3212 and transceiver

To test communication between the 3212 and the transceiver:

1 Check that the transceiver and 3212 at each node are

switched on.

1 Check that the data modems are set to 3012 compatibility

mode.

1 Do one of the following:

• If your 3212 and PC are connected via the Ethernet
ports, open a TCP/IP terminal session on the Ethernet
connection (for help see page 33, Test in g

communication between the 3212 and PC).

• If your 3212 and PC are connected via the Data
connector, open a terminal session on the serial COM
port that is connected to the Data connector (for help
see page 23, Connecting the 3212 to the PC via the

Data connector).

1 Switch off scanning at the local transceiver.
1 In the terminal session at one node, type ATD<address

of the remote 3212>!<channel name>, then press
Enter.

For example, type ATD54321!7.

The transceiver should select the channel specified, then
a pop-up informs you that a data call has started. If this
does not occur, check the name of the channel and the
RS232 settings in the transceiver.

1 Press PTT on the handset to abort the call.
1 Repeat this test in the other direction.

HF Data Modem 3212 User Guide 39

Installation and setup

This page has been left blank intentionally.

40 HF Data Modem 3212 User Guide

3 Operating the 3212

This section contains the following topics:

General (42)

LED indications (43)

Modes of operation (45)

Controlling the 3212 (46)

Operating the 3212 using AT commands (47)

Operating the 3212 using HF-specific application
software (49)

Making a manual data call (50)

Making a data call using a specific channel (52)

Making a data call in an ALE/CALM network (54)

Resetting to factory defaults (56)

Using the on-line help in the 3212 (57)

HF Data Modem 3212 User Guide 41

Operating the 3212

General

The 3212 HF Data Modem may be connected to a PC via a
serial connection or an Ethernet connection. When the data
port on the Ethernet connection is enabled, the data port on the
serial connection is disabled.

The 3212 may be controlled using:

• HF-specific chat, FTP and email application software, or

• terminal software using AT commands

The Codan HF transceiver should be located so that its
scanning status may be monitored by the operator. If the
transceiver is scanning at the time that a data call is started, the
transceiver selects the first network in alphabetical order of all
the scan-enabled ALE/CALM networks. If the transceiver is
not scanning at the time that a data call is started, the
transceiver makes the call on the currently selected channel.

If the 3212 is set to 3012 compatibility mode, the transceiver
makes the call on any channel(s) that is(are) specified using
the following methods:

•the ATD<address>!<channel name> command, or

• a list of channels stored using the AT&C command

If channels are not specified in this manner, then the call is
made on the currently selected channel.

Codan HF transceivers that have a spare 9-way

NOTE

42 HF Data Modem 3212 User Guide

serial port may be controlled from a PC using
CICS. For more information see the
documentation provided with the transceiver.

LED indications

The LEDs on the front panel of the 3212 indicate the status of
the data modem and the data link.

Table 1: LED indications

LED Status Meaning

Green, solid The 3212 is switched on and is operating

correctly.

Operating the 3212

Green,
flashing

Red, flashing The 3212 is switched on but is not operating

Off The 3212 is not receiving power from the

Link Orange,

flashing

Green,
flashing

Orange, solid A data link has been established with a remote

Green, solid A data link has been established with a remote

Tx Green, solid The 3212 is transmitting over the data link.

The 3212 is starting up.

correctly.

transceiver.

The local 3212 is establishing a data link with a
remote data modem.

A remote data modem is establishing a data link
with the local 3212.

data modem. The local 3212 initiated the data
link.

data modem. The local 3212 accepted the data
link.

HF Data Modem 3212 User Guide 43

Operating the 3212

Table 1: LED indications (cont.)

LED Status Meaning

Throughput Red, solid The rate at which the data is being transmitted

over the HF link is represented by the number of
LEDs that are illuminated.

When the high-speed waveform is in use, the
following data rates apply:

1 LED represents 75 bps
2 LEDs represent 150 bps
3 LEDs represent 300 bps
4 LEDs represent 600 bps
5 LEDs represent 1200 bps
6 LEDs represent 2400 bps
7 LEDs represent 3600 bps
8 LEDs represent 4800 bps
9 LEDs represent 6000 bps
10 LEDs represent 7200 bps

When the 3012 compatibility mode is in use, each
LED represents approximately 100 bps when
using 16 channels.

44 HF Data Modem 3212 User Guide

Modes of operation

The 3212 has two modes of operation:

• local command mode

• on-line mode

The 3212 enters local command mode automatically when it is
switched on. This mode allows the operator to change control
parameters.

The 3212 automatically enters on-line mode whenever a
successful link is established between it and one or more other
data modems. The 3212 remains in on-line mode until the link
is terminated, the power is switched off then on again, or a
special command (called an escape sequence) is received,
which switches the 3212 back to local command mode (see

page 48, Switching to local command mode).

NOTE

Operating the 3212

Your 3212 must be in local command mode to
send any AT commands from the terminal
session.

The default escape character is +. To change this

NOTE

HF Data Modem 3212 User Guide 45

to another character see the AT&E command in

Table 2 on page 59.

Operating the 3212

Controlling the 3212

There are no operator controls on the 3212. Its operation is
controlled by a PC using HF-specific chat, FTP and email
application software, or AT commands via terminal software.

The use of HF-specific application software is not covered by
this document. The basic operation described in this section
uses AT commands via terminal software.

46 HF Data Modem 3212 User Guide

Operating the 3212

Operating the 3212 using AT commands

AT commands are a set of commands used to operate many
types of commercially available modems.

A complete set of AT commands that may be

NOTE

The 3212 must be in local command mode before you may use
AT commands.

All AT command lines must start with the characters AT.
Commands may be typed in upper or lower case and all
command lines must be executed by pressing Enter. Any
spaces on the command line are ignored when the command is
processed. Several AT commands may be grouped together up
to a maximum length of 40 characters.

While entering AT commands, you may use the backspace key
to correct mistakes on the current entry line. However, the AT
at the beginning of the command line must be typed in
correctly the first time without using the backspace key.

used with the 3212 are on page 59, AT command

set.

The 3212 switches to on-line mode automatically whenever a
successful link is established between it and one or more other
data modems.

The escape sequence

The escape sequence is used to temporarily transfer the
modem from on-line mode to local command mode, so that it
can process AT commands. The escape sequence is three key
presses of the escape character.

The default escape character is + (ASCII value 43). Therefore,
the default escape sequence is +++.

You can change the escape character using the AT& E
command (see page 59, AT command set).

HF Data Modem 3212 User Guide 47

Operating the 3212

Switching to local command mode

Before you may use AT commands, the 3212 must be in local
command mode.

NOTE

To switch from on-line mode to local command mode:

1 Wait at least one second after the last character of a

message has been sent.

1 Type the escape sequence.

NOTE The default escape sequence is +++.

1 Wait for the terminal to display OK.

The 3212 is in local command mode.

1 Use any AT commands, as required (see page 59, AT

command set).

Returning to on-line mode

The 3212 automatically enters on-line mode whenever a
successful link is established between it and one or more other
data modems. However, if you have switched the 3212 to local
command mode during a successful data link, and you wish to
continue with the link, you need to switch back to on-line
mode.

The 3212 defaults to local command mode
when it is first switched on.

To manually switch the 3212 from local command mode to
on-line mode to continue with an existing data link:

1 Type ATO (letter ‘O’, not zero), then press Enter.

48 HF Data Modem 3212 User Guide

Operating the 3212

Operating the 3212 using HF-specific application software

If you are using HF-specific chat, FTP and email application
software, please see the documentation provided with these
products for information on their operation. In particular, you
should note whether the application software is compatible
with serial or Ethernet interfaces, or both.

For information on initialisation strings for third-party
application software see page 79, Initialisation strings.

HF Data Modem 3212 User Guide 49

Operating the 3212

Making a manual data call

To make a manual data call between nodes:

1 Do the following at the handset/front panel of both

Codan HF transceivers:

• Press SCAN to switch off scanning.

• Set both transceivers to the same channel.

1 Open a terminal session on the data port.

NOTE

For more information see page 33, Testing

communication between the 3212 and PC.

1 Type ATD<address of remote data modem>, then

press Enter.

A pop-up on the handset/front panel screen of the
transceiver states that a data call has been started.

The Link LED on the local 3212 starts to flash orange.
The Link LED on the remote 3212 starts to flash green.

When the link is established, the Link LEDs on both
data modems change to the solid colour. CONNECT
appears in the terminal session at each node.

1 If automatic answering has not been enabled at the

receiving node, type ATA, then press Enter.

Any text that is typed at a terminal is transmitted to the
other node.

Files can be transferred between the terminals. For
information on how to send files see the documentation
provided with the terminal software.

50 HF Data Modem 3212 User Guide

Operating the 3212

1 If you want to end the call, type the escape sequence,

then following the OK response, type ATH , then press
Enter.

NOTE

When the data link is closed, NO CARRIER appears in
the terminal session at each node.

For other hangup commands see page 59,

AT command set.

HF Data Modem 3212 User Guide 51

Operating the 3212

Making a data call using a specific channel

All Codan HF transceivers are assumed to be

NOTE

NOTE

You can make a broadcast data call to a group of data modems
by using a group selcall address instead of a specific data
modem address. A group selcall address ends in two zeros and
calls all data modems that have the remaining numbers in the
address that match the group address. For example, a group
selcall address of 123400 will call data modems in the range
123401 to 123499.

scanning, unless they are being used to initiate a
data call in a Codan Selcall or Open Selcall
network.

The channels names in the Codan HF
transceiver must be a number in the range 1 to
9999 if they are being used with the

AT&C =<channel name>,... command or
ATD<address>!<channel name> command.

These commands are only applicable when the
3212 is set to 3012 compatibility mode.

To make a data call in a Selcall network:

1 Press SCAN to switch off scanning at the local Codan

HF transceiver.

1 Open a terminal session on the data port at each node.

NOTE

For more information see page 33, Testing

communication between the 3212 and PC.

1 In the terminal session at the local node, type

ATD<address of remote data modem or group selcall
address>, then press Enter.

The data call is started on the default channel selected by
the transceiver when scanning was switched off.

52 HF Data Modem 3212 User Guide

Operating the 3212

If the 3212 is in 3012 compatibility mode and a list of
channels has been stored using the AT&C=<channel
name>,<channel name>... command, the 3212 uses this
list to establish the call.

When the link is established, the Link LED on each data
modem changes to the solid colour. CONNECT or
CONNECT BCAST appears in the terminal session at
each node, depending on whether your call was to one or
many nodes.

If the data call is not successful, NO ANSWER appears in
the terminal session at the local node.

1 If automatic answering has not been enabled at the

remote node, wait for RING to appear in the terminal
session, type ATA, then press Enter.

Any text that is typed at a terminal is transmitted to the
other node.

Files can be transferred between the terminals. For
information on how to send files see the documentation
provided with the terminal software.

1 If you want to end the call, type the escape sequence,

then following the OK response, type ATH , then press
Enter.

NOTE

When the data link is closed, NO CARRIER appears in
the terminal session at each node.

NOTE

HF Data Modem 3212 User Guide 53

For other hangup commands see page 59,

AT command set.

If the data call was a broadcast call, a
receiving node only closes their link. The
sending node closes all links with AT H.

Operating the 3212

Making a data call in an ALE/CALM network

NOTE

To make a data call in an ALE/CALM network:

All Codan HF transceivers are assumed to be
scanning.

1 Open a terminal session on the data port at each node.

NOTE

For more information see page 33, Testing

communication between the 3212 and PC.

1 Type ATD<address of remote data modem>, then

press Enter.

The Codan HF transceiver selects the first scan-enabled
ALE/CALM network in the alphabetical list of networks.

When the link is established, the Link LED on each data
modem changes to the solid colour. CONNECT appears in
the terminal session at each node.

If the data call is not successful, NO ANSWER appears in
the terminal session at the local node.

1 If automatic answering has not been enabled at the

remote node, wait for RING to appear in the terminal
session, type ATA, then press Enter.

Any text that is typed at a terminal is transmitted to the
other node.

Files can be transferred between the terminals. For
information on how to send files see the documentation
provided with the terminal software.

1 If you want to end the call, type the escape sequence,

then following the OK response, type AT H, then press
Enter.

NOTE

54 HF Data Modem 3212 User Guide

For other hangup commands see page 59,

AT command set.

Operating the 3212

When the data link is closed, NO CARRIER appears in
the terminal session at each node.

If the data call was a broadcast call, a

NOTE

receiving node only closes their link. The
sending node closes all links with AT H.

HF Data Modem 3212 User Guide 55

Operating the 3212

Resetting to factory defaults

During setup or daily operation, you may come to a point
where you need to return to a known operating state. In this
situation, you can load the factory-default settings.

NOTE

To load the factory-default settings:

A list of factory-default settings is provided on

page 77, Factory-default settings.

1 Open a terminal session on the data port (see page 33,

Testing communication between the 3212 and PC).

1 Type AT&F, then press Enter.

56 HF Data Modem 3212 User Guide

Using the on-line help in the 3212

The 3212 has an on-line help that lists all the AT commands
that you can use to control the 3212. You can access the help
using a terminal session.

To access the on-line help:

1 Open a terminal session on the data port (see page 33,

Testing communication between the 3212 and PC).

1 Do the following:

• To view the full on-line help, type AT?, then press
Enter.

• To view the help for an individual command, type
AT?<command>, then press Enter.

For example, to view help for the AT &A command,
type AT?&A.

Operating the 3212

HF Data Modem 3212 User Guide 57

Operating the 3212

This page has been left blank intentionally.

58 HF Data Modem 3212 User Guide

Appendix A—AT command set

To use these commands, simply type the command, with any
required number, then press Enter.

For example, enter:

• AT%M=0

• ATE1

• ATW3, or

• AT%M0E1W3

To query the status of any of the AT&, AT% or AT*
commands, simply type the root command followed by a
question mark, then press Enter. For example, enter AT% M?.
A typical response to this is %M: 1. Alternatively, enter the
AT&V command for a full summary of the status of the 3212.

S-registers are special-purpose registers for storing parameters
for the 3212. The AT commands that are used to display the
contents of the S-registers of the 3212 HF Data Modem are
listed in Table 3 on page 67.

Table 2: AT commands

Command Description

AT? Displays the on-line help.

ATA, ATA1 Answers incoming call.

ATA2 Rejects call if sender’s unit address is greater than

zero. For information on the unit address see

page 66, AT&U<number>.

ATA3, ATAH Rejects call.

AT B 0
(default)

ATB1 Enters telephone compatibility mode.

ATD Starts a broadcast call.

HF Data Modem 3212 User Guide 59

Uses normal HF data modem response codes.

AT command set

Table 2: AT commands (cont.)

Command Description

ATD<address> Starts a call to the node at <address>. If an

address is not included, a broadcast call is made.

If the local Codan HF transceiver is not scanning,
the 3212 is in 3012 compatibility mode
(AT%M0), and a channel list is stored using the
AT&C=<channel name>,... command, the 3212
uses this list to establish the call.

ATD<address>00
(the last two digits of
<address> are replaced with

00)

Starts a group call to all nodes within the range
specified by the address.

For example, a group address of 123400 will call
data modems in the range 123401 to 123499.

If the local Codan HF transceiver is not scanning,
the 3212 is in 3012 compatibility mode
(AT%M0), and a channel list is stored using the
AT&C=<channel name>,... command, the 3212
uses this list to establish the call.

ATD<address>!<channel
name>

If the 3212 is in 3012 compatibility mode
(AT%M0), the 3212 overrides any previous
channel setup on the transceiver, then sends a call
to <address> on channel <channel name> only.
The transceiver reverts to the previous setup after
this call.

ATDS<number> Starts a call to the address stored in

AT&Z<number> (see page 66,

AT&Z<number>=<address>).

If the local Codan HF transceiver is not scanning,
the 3212 is in 3012 compatibility mode
(AT%M0), and a channel list is stored using the
AT&C=<channel name>,... command, the 3212
uses this list to establish the call.

60 HF Data Modem 3212 User Guide

Table 2: AT commands (cont.)

Command Description

ATDL Dials the last number called.

If the local Codan HF transceiver is not scanning,
the 3212 is in 3012 compatibility mode
(AT%M0), and a channel list is stored using the
AT&C=<channel name>,... command, the 3212
uses this list to establish the call.

ATE0 Disables command echo.

AT command set

AT E1

Enables command echo.

(default)

AT F0
(default)

Disables local echo of data (full duplex). This state
is only visible if telephone compatibility mode is
enabled (see page 59, ATB1).

ATF1 Enables local echo of data (half duplex). This state

is only visible if telephone compatibility mode is
enabled (see page 59, ATB1).

ATH Hangs up the connection at both nodes.

ATH0 Hangs up the connection at both nodes and

discards unsent data.

ATH1 Ignores an incoming call until AT H command is

issued.

ATH2 Hangs up the connection after user has stopped

typing data and all data has been transmitted.

ATH3 Hangs up the connection immediately without

informing the remote end.

ATI Displays identity and build standard information

for the 3212. For details see the on-line help (AT ?
command).

HF Data Modem 3212 User Guide 61

AT command set

Table 2: AT commands (cont.)

Command Description

ATL0
(default)

Disables local echo of data entered while
connected. This state is only visible if telephone
compatibility mode is disabled (see page 59,

ATB0).

ATL1 Enables local echo of data entered while

connected. This state is only visible if telephone
compatibility mode is disabled (see page 59,

ATB0).

AT O 0

Returns to on-line mode.

(default)

ATO1 Disconnects when there is no queued data.

ATQ<number> Sets control of the result code. For details see the

on-line help (AT? command).

AT R 0
(default)

Disables remote echo of data received by
destination.

ATR1 Enables remote echo of data received by

destination.

ATS0=<number> Same as AT&A =<number> if the 3212 is in

telephone compatibility mode (see page 64,

AT&A0).

ATV0 Uses numeric response codes to AT commands.

AT V 1

Uses full text response codes to AT commands.

(default)

AT W 0

Does not explain error messages.

(default)

ATW1 Explains error messages.

ATW2 Shows status when connecting or disconnecting.

ATW3 Selects both ATW 1 and ATW 2.

62 HF Data Modem 3212 User Guide

Table 2: AT commands (cont.)

Command Description

AT command set

AT Z0

Reloads 3212 settings from memory.

(default)

ATZ1 Performs a reset similar to the power being

switched off then on again.

AT%B<number> Sets the baud rate selection for the high-speed

waveform when AT%D =0 (disabled). For details
on the rates see the on-line help (AT? command).

AT%C0 Disables data compression.

AT %C 2
(default)

AT%D=<enable>,<low
rate>,<high rate>,<initial
rate>,<initial interleaver>

Enables data compression (for non-broadcast calls
only).

Sets the dynamic rate control for the high-speed
waveform. If disabled, the modem uses the fixed
baud rate specified with the AT%B command. For
details see the on-line help (AT? command).

AT%F=<framing>,<parity> Sets the asynchronous data port framing and parity

if AT%R is non-zero. For details see the on-line
help (AT? command).

AT %H 0
(default)

Disables chat mode for outgoing STANAG 5066
links.

AT%H1 Enables chat mode for outgoing STANAG 5066

links.

AT%L<number> Sets the fixed interleaver length for the high-speed

waveform. For details see the on-line help (AT?
command).

AT %M 0

Sets 3012 compatibility mode.

(default)

AT%M1 Sets the high-speed waveform.

AT%R<number> Sets the asynchronous data port rate. For details

see the on-line help (AT? command).

HF Data Modem 3212 User Guide 63

AT command set

Table 2: AT commands (cont.)

Command Description

AT%T<audio level>,
<minimum ALC time>,

Sets the audio interface settings for the transceiver.
For details see the on-line help (AT? command).

<hangup time>

AT & A 0

Disables automatic answering of calls.

(default)

AT&A1 Enables automatic answering of all calls.

AT&A2 Enables automatic answering of all calls except

those with a sender unit address greater than zero
(see page 66, AT&U<number>). These calls are
automatically rejected.

AT&A3 Enables automatic rejecting of all calls.

AT & C =0

Clears the list of channels.

(default)

AT&C=<channel name>,
<channel name>,<channel
name>,<channel name>,
<channel name>

Sets up the list of channels to be used by the 3212
during a data call in a Selcall network. Up to five
channels may be specified. The maximum length
of the command line is 37 characters including
commas.

If the 3212 is in 3012 compatibility mode
(AT%M0), this list is used by the 3212 to
establish the call when it is instructed to dial.

If you want to save this list of channels for future
use, you must use the AT&W command (see

page 66, AT&W).

AT&C=<channel name> Changes the transceiver to the channel specified if

the 3212 is in 3012 compatibility mode. After
sending a call, the transceiver remains on this
channel.

If automatic scanning is enabled in the transceiver,
scanning resumes after the timeout period.

64 HF Data Modem 3212 User Guide

Table 2: AT commands (cont.)

Command Description

AT command set

AT & D0

Ignores DTR input.

(default)

AT&D1 Changes to local command mode if currently on

line and DTR goes low.

AT&D2 Hangs up when DTR goes low, and does not

answer calls until DTR goes high.

AT&D3 Performs a reset equivalent to ATZ if DTR goes

low (see page 63, ATZ0).

AT&E<ASCII value> Sets the escape sequence character to the specified

ASCII value. Default value is 43 (+).

AT&F Restores all parameters to their factory-default

settings.

AT&I<address> Sets the local station address (up to 6 digits). The

default address is derived from the MAC address
of the 3212.

AT&K0 Switches off flow control.

AT & K3

Switches on RTS/CTS (hardware) flow control.

(default)

AT&M<number> Sets the modulation method to a range of channels

QPSK, secure or not secure, or to the Commercial
4539 (high-speed) waveform. For details see the
on-line help (AT? command).

AT&R? Displays the address of the remote node that is

currently, or was last connected.

AT&S? Displays the serial number of the 3212.

AT&T<number> Performs a local test function when using the high-

speed waveform (AT%M1). For details see the
on-line help (AT? command).

HF Data Modem 3212 User Guide 65

AT command set

Table 2: AT commands (cont.)

Command Description

AT&U<number> Sets the unit address of the sending node for the

next call made; the value resets to zero after the
call. Values are 0 to 15 (0 is default), or 16 to 31
for reserved values.

AT&V Shows all settings.

AT&W Writes parameters to the non-volatile memory.

AT&Z<number>=<address> Saves node address <address> in memory

<number>, 0 to 3. For details see the on-line help
(AT? command).

AT*B? Displays the type of link used for the current or

last connection. For details see the on-line help
(AT? command).

AT*I0,"<IP address of
3212>","<subnet mask>",
"<gateway IP address>"

Disables DHCP in the 3212, then sets the IP
address of the 3212, the subnet mask, and the
gateway IP address.

AT*I1 Enables DHCP in the 3212.

AT*M? Displays the MAC address of the 3212.

AT*P Sets the base port number for the 3212 within the

range 1 to 65535. Default value is 50000.

66 HF Data Modem 3212 User Guide

AT command set

Table 3: AT S-register commands

Command Description

ATS0 Automatically answers a call (telephone compatibility mode, see

AT&A commands in Table 2 on page 59).

ATS20? Displays the number of data bits received since the link was

established.

ATS21? Displays the throughput for receive (bps), that is, the number of bits

received divided by the duration of the link.

ATS22? Displays the total number of data bits transmitted since the link was

established.

ATS23? Displays the throughput for transmit (bps), that is, the number of bits

transmitted divided by the duration of the link.

ATS39? Displays the elapsed time since the start of the current connection, or

the duration of the previous connection if there is no current
connection (s).

ATS40? Displays the frequency offset (Hz).

ATS41? Displays an estimate of channel quality, that is, the number of bits

transmitted without error.

ATS42? Displays the compression ratio of the current or most recent link

expressed in percentage points (for example, 75 means that data was
compressed to 75% of its original size).

ATS44? Displays the unit address of the sending node.

ATS45? Displays the channel on which the 3212 has established a link.

HF Data Modem 3212 User Guide 67

AT command set

This page has been left blank intentionally.

68 HF Data Modem 3212 User Guide

Appendix B—Connectors

This section contains the following topics:

Data connector (70)

Service connector (71)

Transceiver connector (72)

Ethernet connector (74)

HF Data Modem 3212 User Guide 69

Connectors

15

96

Data connector

The Data connector is a 9-way, D-type female connector on
the rear panel of the 3212. It provides a DCE interface. The
port settings can be configured as required for your
installation. This port is fully optically isolated.

In asynchronous mode, the connector passes data at rates up to
115 kbps.

Figure 13: Front view of the Data connector

Table 4: Pinouts for the Data connector

Pin No. Function Input/Output Signal level

1 DCD Output RS232

2 Rx data Output RS232

3 Tx data Input RS232

4 DTR Input RS232

5Ground 0V

6 DSR Output RS232

7 RTS Input RS232

8 CTS Output RS232

9 Ring indicator Output RS232

70 HF Data Modem 3212 User Guide

Service connector

15

96

The Service connector is a 9-way, D-type male connector on
the rear panel of the 3212.

The port settings are fixed as follows:

Baud rate 9600

Data bits 8

Parity Even

Stop bits 1

Flow control None

Figure 14: Front view of the Service connector

Connectors

Pin No. Function Input/Output Signal level

1N/C

2 Rx data Input RS232

3 Tx data Output RS232

4N/C

5 Signal ground 0 V

6–9 N/C

HF Data Modem 3212 User Guide 71

Table 5: Pinouts for the Service connector

Connectors

18

159

Transceiver connector

The Transceiver connector is a 15-way, D-type male
connector on the rear panel of the 3212. It provides the power,
data, and control connection between the 3212 and the Codan
HF transceiver.

Figure 15: Front view of the Transceiver connector

Table 6: Pinouts for the Transceiver connector

Pin No. Function Input/Output Signal level

1 Positive supply Input +12 V nominal supply

2

3 Rx data Input RS232

4 PTT return Output Opto-coupler emitter

5 Q line control line Output Open collector, 20 V

maximum

6600Ω balanced,

transformer isolated

Output –30 to +5 dBm audio,

software adjustable

audio –

7 PTT to key transceiver Output Opto-coupler, open

collector, 20 V
maximum

8600Ω balanced,

transformer isolated

Output –30 to +5 dBm audio,

software adjustable

audio +

9 Power and signal

10

72 HF Data Modem 3212 User Guide

ground

0V

Table 6: Pinouts for the Transceiver connector (cont.)

Pin No. Function Input/Output Signal level

11 Spare line Input/Output Input:

12 Spare line Input/Output

VIL 0 to 0.8 V
VIH 2.4 to 20 V

Output:
Open collector,
20 V maximum

Connectors

13 600 Ω balanced,

transformer isolated

Input –30 to +3 dBm, AGC

controlled

audio –

14 Tx data Output RS232

15 600 Ω balanced,

transformer isolated

Input –30 to +3 dBm, AGC

controlled

audio +

HF Data Modem 3212 User Guide 73

Connectors

18

LAN activity

(yellow)

LAN link status

(green)

Ethernet connector

The Ethernet connector provides a standard connection via a
straight-through or crossover Ethernet cable. The connector
has two LEDs (see Figure 16).

The LAN activity LED flashes yellow when data is sent or
received through the connector.

The link status LED is steady green when there is a good
connection between the Ethernet connector and the
supporting switch.

The Ethernet port supports both 10 and 100 Mbps operation.

Figure 16: Front view of the Ethernet connector

Table 7: Pinouts for the Ethernet connector

Pin No. Function

1Tx +

2Tx –

3 Rx +

4N/C

5N/C

6 Rx –

7N/C

8N/C

74 HF Data Modem 3212 User Guide

Appendix C—Specifications

Table 8: Specifications

Item Specification

Supply voltage 13.5 V DC nominal

10 to 15 V DC fully operational

Protection Reverse polarity and overvoltage protected to ±50 V DC

Supply current 250 mA typical @ 13.5 V DC

300 mA maximum

Supported
waveforms

Data link protocol Proprietary Codan 9001/9002/3012 compatibility with data

Operating
temperature

Storage temperature –40 to +60°C

80 baud CHIRP Proprietary, link establishment

2400 bps
16 channel QPSK

75 bps
150 bps
300 bps
600 bps
1200 bps
2400 bps
3600 bps
4800 bps
6000 bps
7200 bps

compression, or
STANAG 5066 including DRC and data compression

Support for selective, group and broadcast link types

0 to +55°C
(32 to 131°F)

(–40 to 140°F)

Codan 9001/9002/3012
compatibility mode

Commercial 4539 serial tone
waveform; modified high-speed
mode

HF Data Modem 3212 User Guide 75

Specifications

Table 8: Specifications (cont.)

Item Specification

Relative humidity 0 to 100% non-condensing

Size 210 mm W × 240 mm D × 65 mm H

(8.3inW × 9.4inD × 2.6inH)
(includes allowance for rear connectors)

Weight 2 kg

(4.4 lb)

Sealing IP52

Mounting Free standing

Flange
Mobile mounting cradle

76 HF Data Modem 3212 User Guide

Appendix D—Factory-default
settings

The settings listed in Table 9 are loaded into the 3212 in the
factory and when you use the AT&F command (see page 56,

Resetting to factory defaults). The entries marked with an

asterisk are not loaded with the AT& F command.

Table 9: Factory-default settings for the 3212

Setting Value

Asynchronous rate for data port Autobauding

Asynchronous framing and parity
for data port

Auto answer Off

*Base port 50000

Chat mode for outgoing STANAG
5066 links

Command echo On

Compression Enabled

Connection method 3012 compatibility mode

DTR behaviour Ignored

DRC settings for Commercial
4539/STANAG 5066 (high-speed)
mode

Escape character ASCII value 43 (+)

Fixed baud rate selection for
Commercial 4539/STANAG 5066
(high-speed) mode

8N1 (8 data bits, no parity, 1 stop bit)

Disabled

Enabled
Low: 75 bps
High: 7200 bps
Initial selection: 2400 bps
Initial interleaver: Short

7200 bps

HF Data Modem 3212 User Guide 77

Factory-default settings

Table 9: Factory-default settings for the 3212 (cont.)

Setting Value

Fixed interleaver length for

Short
Commercial 4539/STANAG 5066
(high-speed) mode

Handshaking Hardware using RTS/CTS

*IP/Ethernet interface DHCP disabled

IP address of 3212: 192.168.3.212

Subnet mask: 255.255.255.0

Default gateway: 192.168.3.1

Local data echo Disabled

Modulation method Commercial 4539 waveform

On-line mode Keep connection going

Remote data echo Disabled

Result code suppression control Disabled

Telephone compatibility mode Disabled

Test mode Normal operation

Unit number 0

Verbose responses Text messages

Warning and information

No messages
messages

78 HF Data Modem 3212 User Guide

Appendix E—Initialisation
strings

This section contains the following topics:

UUPlus© (80)

HF Data Modem 3212 User Guide 79

Initialisation strings

UUPlus©

UUPlus© V4.6 is compatible with the serial

NOTE

Setting up the server

To set up the UUPlus Codan Server:

interface only. It is not compatible with the
Ethernet interface.

1 Launch UUPlus Codan Server.
1 Click Setup in the UUPlus Codan Server Window.
1 Select the Modem Settings tab.
1 Click Use Defaults.
1 In the Answer Settings frame, set the Timeout field

to 180 s.

1 Do the following in the Advanced Modem

Configuration frame:

• Select Custom as the type of modem.

• Enter the initialisation string that is most suitable for

your requirements into the Init String field.

80 HF Data Modem 3212 User Guide

Condition Initialisation string

Initialisation strings

Default, suitable for any channel
conditions

Reliable in average channel conditions
with short data transfers

Reliable in poor channel conditions
with short data transfers

Reliable in good channel conditions
with large data transfers

• Select DTR as the type of modem hangup.

• Set the Reset Delay field to 20.

• Clear the Full Reset check box.

1 Click Save.
1 Click Done.

Setting up the client

To set up the UUPlus Codan Client:

1 Launch UUPlus Codan Client.

AT|AT&F|ATE0&D=2

AT|AT&F|ATE0&D=2|AT&M=4

AT|AT&F|ATE0&D=2|AT%D=1,1,4,3,1

AT|AT&F|ATE0&D=2|AT%D=1,5,10,7,3

1 Click Setup in the UUPlus Codan Client Window.
1 Select the Modem Settings tab.
1 Click Use Defaults.

HF Data Modem 3212 User Guide 81

Initialisation strings

1 Do the following in the Advanced Modem

Configuration frame:

• Select Custom as the type of modem.

• Enter the same initialisation string as used in the Server

into the Init String field.

• Select DTR as the type of modem hangup.

• Clear the Full Reset check box.

• Set the Delay field to 20.

1 Click Done.

82 HF Data Modem 3212 User Guide

Appendix F—Compliance

This section contains the following topics:

Introduction (84)

European R&TTE Directive (85)

EMC and safety notices (86)

FCC compliance (87)

HF Data Modem 3212 User Guide 83

Compliance

Introduction

This section describes how to ensure the 3212 HF Data
Modem complies with the European EMC Directive
89/336/EEC and the European Low Voltage Directive
73/23/EEC as called up in the European R&TTE Directive
1999/5/EC.

This section also contains the requirements for FCC
compliance.

84 HF Data Modem 3212 User Guide

European R&TTE Directive

0191

0191

The 3212 HF Data Modem has been tested and complies with
the following standards and requirements (articles of the
R&TTE Directive):

• Article 3.1b: EN301 489-1

• Article 3.1b: EN301 489-15

• Article 3.1a: EN60950-1

Product marking and labelling

Any equipment supplied by Codan that satisfies these
requirements is identified by the , or
markings on the model label of the product.

Declaration of Conformity

The CE Declaration of Conformity for the product is listed on

page 94, Associated documents. This document can be made

available upon request to Codan or a Codan-authorised
supplier.

Compliance

HF Data Modem 3212 User Guide 85

Compliance

EMC and safety notices

EMC

To ensure compliance with the EMC Directive is maintained,
you must:

1 Use standard shielded cables supplied from Codan

(where applicable).

1 For Ethernet connections, a ferrite bead (Codan part

number 39-79150-080) must be attached to the Ethernet
cable as close as possible to the Ethernet connector on
the 3212.

1 Ensure the covers for the equipment are fitted correctly.

If it is necessary to remove the covers at

CAUTION

any stage, they must be refitted correctly
before using the equipment.

Electrical safety

To ensure compliance with the European Low Voltage
Directive is maintained, you must install and use the
3212 HF Data Modem in accordance with the instructions in
this guide.

Earth symbol

A chassis earth connection point is provided on the
3212 HF Data Modem. The symbol shown in Table 10 is used
to identify the earth on the equipment.

Table 10: Earth symbol

Symbol Meaning

Chassis earth

86 HF Data Modem 3212 User Guide

FCC compliance

FCC Part 15 compliance

Any modifications made to the 3212 HF Data Modem that are
not approved by the party responsible for compliance may
void your equipment’s compliance under Part 15 of the FCC
rules.

The 3212 HF Data Modem has been tested and found to
comply with the limits for a Class B device, pursuant to
Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by
switching the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following
measures:

Compliance

• reorient or relocate the receiving antenna

• increase the separation between the equipment and
receiver

• connect the equipment into an outlet on a circuit different
from that to which the receiver is connected

• consult the dealer or an experienced radio/TV technician
for help

HF Data Modem 3212 User Guide 87

Compliance

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88 HF Data Modem 3212 User Guide

Appendix G—Definitions

Standards and icons

The following standards and icons are used in this guide:

This typeface... Means...

BOLD/Bold a button, switch or connector

Bold a command that you enter or keyboard key

that you press

Courier a segment of text that is taken directly from

a computer screen

Italics a cross-reference or text requiring emphasis

This icon... Means...

WARNING

CAUTION

NOTE

1

HF Data Modem 3212 User Guide 89

your actions may cause harm to yourself or
the equipment

proceed with caution as your actions may
lead to loss of data, privacy or signal quality

the text provided next to this icon may be of
interest to you

a step to follow

Definitions

Acronyms and abbreviations

This acronym... Means...

AGC automatic gain control

ALE automatic link establishment

CICS computer interface command set

CTS clear to send

DC direct current

DCD data carrier detect

DCE data communications equipment

DRC data rate control

DSR data set ready

DTE data terminal equipment

DTR data terminal ready

EMC electromagnetic compatibility

FCC Federal Communications Commission

HF high frequency

LAN local area network

LED light-emitting diode

N/C not connected

PC personal computer

PTT press-to-talk

R&TTE radio and telecommunications terminal

equipment

RTS request to send

90 HF Data Modem 3212 User Guide