User's Manual
Table Of Contents
- IMPORTANT NOTICE
- RESTRICTIONS ON USE
- PRODUCT CONFORMITY
- WARRANTY AND SAFETY INSTRUCTIONS
- TABLE OF CONTENTS
- INTRODUCTION
- 1 TECHNICAL SPECIFICATIONS
- 2 OPERATING VOLTAGE
- 3 SERIAL INTERFACE
- 4 USER INTERFACE
- 5 RF INTERFACE
- 5.1 Transmitter
- 5.2 Receiver
- 5.3 Priority RX/TX
- 5.4 Error correction
- 5.5 Error checking
- 5.6 User data whitening
- 5.7 Pacific Crest and TRIMTALK compatibility
- 6 TRANSPARENT DATA TRANSMISSION
- 7 SETTINGS
- 8 SW-RELATED COMMANDS AND OPTIONS
- 9 ACCESSORIES
- 10 APPENDIX A
- 11 APPENDIX B
SATELLINE-M3-TR1
User Guide, Version 3.0
12
2 OPERATING VOLTAGE
2.1 Operating Voltage (PWR-module)
The SATELLINE-M3-TR1 radio modem can have two (2) operating voltage ranges. The range is
set at the factory. The voltage level must be mentioned in the order. The operating voltage
range is changed by replacing the PWR-module.
The operating voltage options are: +3 … +9 V and +6 … +30 V+/-10%.
The radio modem must only be connected to a power supply with an adequate current output.
The input voltage range is marked in the serial number label. The lower voltage PWR-module
PCB is marked as SPL0006x and the higher voltage module is SPL0010x.
Overvoltage behaviour
+3 … +9 V range: If the operating voltage range is exceeded the modem will automatically
switch OFF. However, if the maximum value is more than 20V it may damage the module.
+6 … +30 V range: If the voltage is less than +6 V the modem will automatically switch OFF.
However, if the maximum value is more than +33 V it may damage the module.
2.1.1 Fuse
A proper fuse must be connected in between the radio modem and the power supply. The
correct value depends on the model (see list below). Recommended minimum value is 2A slow.
2.1.2 Power supply
The radio modem must only be connected to a power supply with an adequate current output.
The pins 15 and 14 of the D-connector are connected to the positive power supply line. The
pins 8 and 7 of the D-connector are connected to negative power supply line (ground).
The DTR-line of the radio modem, which is connected to pin 1, can be used as an
ON/STANDBY –switch, and in this way the radio modem can be switched either ON
(operational state) or OFF (STANDBY). The logical state "1" (Open or more than +3.0 V, max
Vdc) of the DTR-line corresponds to ON-state and a logical state "0" (..<=0 V) corresponds to a
STANDBY state.
In applications, where the radio modem is used as a portable device (meaning battery
operation), the DTR-line (pin 1) should be connected to a logical state "0" always when it is
possible to conserve battery power and prolong operational time between battery charging.
NOTE! There is a galvanic connection between signal ground (SGND, pin 7), ground (GND,
pin 8), outer conductor of antenna connector and modem casing.