Fargo Maestro 100 User manual

Confidential, the whole present document is the sole property of Fargo Telecom O/B on Fargo Services (HK) Ltd.
GSM GPRS Modem
900 / 1800
USER MANUAL
Rev.02

Confidential, the whole present document is the sole property of Fargo Telecom O/B on Fargo Services (HK) Ltd.
Revision history
Rev. Date Details Originated by
00 07 April 2003 First release Wallace Lee
01 07 Nov 2003 Correction on Fargo Maestro 100 setup Wallace Lee
02 13 Jun 2005 Correct Section 5.2, add section 6.5 Wallace Lee
Fargo Maestro is a registered trademark of Fargo Telecom O/B Fargo
Services (H.K.) Ltd.
This manual is written without any warranty. Fargo Telecom O/B Fargo
Services (H.K.) Ltd reserves the right to modify or improve the product and its
accessories which can also be withdrawn without prior notice.
Besides, our company stresses the fact that the performance of the product as
well as accessories depends not only on the proper conditions of use, but also on
the environment around the places of use.
Fargo Telecom O/B Fargo Services (H.K.) Ltd assumes no liability for damage
incurred directly or indirectly from errors, omissions or discrepancies between the
modem and the manual.

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CONTENTS
SAFETY PRECUTIONS 2
CHAPTER 1 INTRODUCTION 3
CHAPTER 2 INSTALLATION 7
CHAPTER 3 WORKING WITH FARGO MAESTRO 9
CHAPTER 4 SPECIFICATION 12
CHAPTER 5 APPENDIX 13
CHAPTER 6 TROUBLESHOOTING 14

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SAFETY PRECUTIONS
zThe modem generates radio frequency (RF) power. When using the modem care must be taken on
safety issues related to RF interference as well as regulations of RF equipment.
zDo not use your phone in aircraft, hospitals, petrol stations or in places where using GSM products is
prohibited.
zBe sure that the modem will not be interfering with nearby equipment. For example: pacemakers or
medical equipment. The antenna of the modem should be away from computers, office equipment,
home appliance, etc.
zAn external antenna must be connected to the modem for proper operation. Only uses approved
antenna with the modem. Please contact authorized dealer on finding an approved antenna.
zAlways keep the antenna with minimum safety distance of 26.6 cm or more from human body. Do not
put the antenna inside metallic box, containers, etc.
Using the modem in vehicle
zCheck for any regulation or law authorizing the use of GSM in vehicle in your country before installing
the modem
zInstall the modem by qualified personnel. Consult your vehicle dealer for any possible interference of
electronic parts by the modem.
zThe modem should be connected to the vehicle’s supply system by using a fuse-protected terminal in
the vehicle’s fuse box
zBe careful when the modem is powered by the vehicle’s main battery. The battery may be drained
after extended period.
Protecting your modem
zTo ensure error-free usage, please install and operate your modem with care. Do remember the
following:
zDo not expose the modem to extreme conditions such as high humidity/rain, high temperatures,
direct sunlight, caustic/harsh chemicals, dust, or water.
zDo not try to disassemble or modify the modem. There is no user serviceable part inside and the
warranty would be void.
zDo not drop, hit or shake the modem. Do not use the modem under extreme vibrating condition.
zDo not pull the antenna or power supply cable. Attach/ detach by holding the connector.
zConnect the modem only according to the instruction manual. Failure to do it will void the warranty.
zIn case of problem, please contact authorized dealer.
GENERAL

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CHAPTER 1
INTRODUCTION
Fargo Maestro 100 / Fargo Maestro 20 is a ready-to-use GSM modem for voice, data, fax and SMS
services. It also supports GPRS Class 10(Fargo Maestro 100) or Class 2(Fargo Maestro 20) for hi-
speed data transfer. Fargo Maestro 100 / Fargo Maestro 20 can be easily controlled by using AT
command for all kinds of operations. With standard 9-pin RS232 port and telephone-like audio plug (via
optional cable) the Maestro 100 / Fargo Maestro 20 can be set up with minimal effort.
1.1. Package
The Fargo Maestro 100 / Fargo Maestro 20 package should include the following:
1.Fargo Maestro 20 or Fargo Maestro 100 x 1
2. Power cord with fuse x 1
3. Safety note x 1
1.2. Interfaces
1.2.1. Status indicator
The LED will indicate different status of the modem:
- off Modem switched off
- on Modem is connecting to the network
- flashing slowly Modem is in idle mode
- flashing rapidly Modem is in transmission/communication (GSM only)
1.2.2. SMA female antenna connector
-Connect this to an external antenna with SMA male connector. Make sure the antenna is for the
GSM900/1800 frequency with impedance of 50ohm, and also connector is secured tightly.
SIM holder eject button Status indicator
SIM holder 4-PIN connector (Power, Input / Output)
15 pin Sub-D Female Connector
(RS232/Audio)
SMA female antenna connector

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1.2.3. 15-PIN D-SUB Female connector (RS232 / Audio)
- The connector provides serial link and audio link to the modem.
Pin number Name EIA designation Type Note
1 DCD Data Carrier Detect Output
2 TX Transmit Data Input
3 BOOT Input Not used
4 MICROPHONE (+) Input
5 MICROPHONE (-) Input
With 2V DC bias
output
6 RX Receive Data Output
7 DSR Data Set Ready Output
8 DTR Data Terminal Ready Input
9 GND Ground Ground
10 SPEAKER(+) Output
11 CTS Clear to Send Output
12 RTS Request to Send Input
13 RI Ring Indicator Output
14 RESET Input Pull low to reset
15 SPEAKER(-) Output
Specification of microphone and speaker to be connected :
Parameters Min Typical Max Remark
Microphone current @2V / 2K Ohm 0.5 mA
Microphone input level 100
mVpp
Speaker output current 150 Ohm/ 1nF 16mA
Speaker impedance 32ohm
Please refer to the document “Application notes - Power supply & Audio” for more information of audio
connection.
1.2.4. 4-PIN connector (Power, Input / Output)
Pin assignment of 4-pin connector
Pin number Name Functions
1 I/O Input / Output port
2 ~INTR Interrupt function triggered by pulling this pin to
ground or LOW level; reserved for additional
functions with new firmware
3 POWER - DC power negative input
4 POWER+ DC power positive input

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A cable, included in the package shall be used for power supply connection:
I/O
Parameters Min Typical Max Remark
I/O In LOW voltage 0.5V
I/O In HIGH voltage 3V 5V
I/O out max. sink current 10mA
INTR
Parameters Min Typical Max Remark
Input LOW voltage 0 0.5V Triggered by pulling this pin to
LOW level ; otherwise leave it
open
•Please refers to Chapter 6 Appendix for using I/O and INTR signals. Contact your dealer if you need
wire for the I/O and INTR connection
1.2.5 Optional accessories
You may contact your sales agent for the following optional accessories:
External antenna
- Magnetic mount type
- Frequency GSM 900/1800 band
- Gain 3db
- VSWR < 1.5:1
- Height ~ 236 mm (including magnetic base)
- Cable : Type RG-174U length 2.5m
- SMA male connector on cable end
- color : back (SMA connector silver)
Fuse holder
Fuse rating :
250V 2.5A
Connector Micro-Fit 3.0
(to Fargo Maestro)
Stripped wire
5-32V DC
Supply

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4p4c plug
Pin Assignment
Sub-D 15
(male)
Sub-D 9
(female)
Plug
4P4C
11
23
3
41
54
62
76
84
95
10 2
11 8
12 7
13 9
14
15 3
Sub-D 9 pin
‘Y’ cable
- Direct connection with standard 9-
pin RS-232 port (DTE)
- Direct connection with common
handset of telephone for voice call
- Shielded cable
- Cable length 1.1m (w/ connector)
DIN rail mount
-Quick attachment / detachment to
standard DIN rail
-Tin plated Steel

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CHAPTER 2
INSTALLATION
2.1 Mounting the modem
Use 2 pcs of M3 screw to mount the modem
When using optional DIN rail mount please refer to document “Installation of DIN rail mount”
Bottom view
2.2 Installing the SIM card
Use a ball pen or paper clip to press the SIM holder eject button. The SIM holder will come out a little.
Then take out the SIM holder.
Note : DO NOT pull out the SIM holder without pushing the eject button.
Put the SIM card to the tray, make sure it has completely sit on the tray. Put the tray back into the slot.
2.3 Connecting the external antenna (SMA type)
Connect this to an external antenna with SMA male connector. Make sure the antenna is for the
GSM900/1800 frequency with impedance of 50ohm, and also connector is secured tightly.
Note : Please use antenna designed for GSM 900/1800 Mhz operation. Incorrect antenna will affect
communication and even damage the modem.
Screw mounting slot
SMA male connector of
antenna cable
secure tightly

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2.4 Connect the modem to external device
You can use the optional ‘Y’ cable to connect the modem’s Sub-D connector to external
controller/computer. Note : The modem CANNOT be connected to the ‘Line’ jack of a landline telephone
directly.
Connection example using optional ‘Y’ cable:
2.5Connecting the DC power supply
Connect the open ending of the included power cord to a DC supply. Refer to the following for power
supply requirement.
Input voltage range 5V – 32V
Rated current 650 mA (Fargo Maestro 100)
450 mA (Fargo Maestro 20
Connect the connector to the modem. The modem will turn on automatically.
The status indicator on the modem will be lit when power on. After a few seconds it will go flashing
slowly (registered to the network successfully, refer section 1.2.1).
Chapter 3 describes how to communicate with the modem in Microsoft WindowsTM environment.
RS-232 port of PC
Handset of phone
DB-9
connector
4p4c
plug
Sub-D 15 pin
connector
Maestro 100 /
Maestro 20
AC-DC Adaptor
or battery
(not included)
Solder wire
endin
g
s