User Manual

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The Twister 2X is a highly sophisticated industrial radio control system. The versatile
features of the Twister 2X permits a wide range of industrial applications. The Twister 2X
industrial radio control system can be used to control all types of cranes, building
construction equipment, automatic control systems, mining equipment, and many others.
The Twister 2X incorporates numerous safety circuits that guaranty maximum security and
ensure the system is resistant to other radio interference. The major features of the Twister
2X indus trial radio control system is as follow:
* Highly evolved software that have redundant error checking and correcting capabilities
to ensure 100% error-free transmission, decoding, and control of output relays. These
software designs include CRC (Cyclical Redundancy Check Code) and Hamming
Codes (Error Recovery).
* The encoding system utilizes an advanced microprocessor for 100% error -free data
transmission. The availability of 65,536 sets of unique security ID codes will ensure
that only commands from the matching control transmitter can be carried out without
any interference from other radio systems.
* The decoding system utilizes dual advanced microprocessors, which ensures 100%
error-free calculation, bit checking, and correction of incoming transmitted data.
* The system also utilizes an additional central microprocessor for data comparison and
cross checking between the two decoding microprocessors to ensure 100% error-free
decoding and control of all output relays. When faults are detected via this central
microprocessor, for maximum safety, the entire system will be shutdown within 0.50
second to avoid any undesired crane movements.
* The system utilizes PLL synthesized RF for means of data transmission. It allows the
user to select from a wide range of frequency channels best suited for the environment.
The frequency channel is selected via a dip-switch in the transmitter unit and LCD
control panel in the receiver box. The receiver system also has the ability to auto scan
from a wide range of frequency channels. The receiver system will search and locked
on to the intended matching transmitter unit.
* Optional dual advanced receiving system for optimum receiving capability.
* The Twister 2X systems are equipped with numerous self-diagnosing features.
These include transmitter low voltage detection  warning  system automatic
shutdown, faulty pushbutton and joystick contact switches detection, faulty MAIN
contact relay detection, faulty relay boards detection, faulty EEPROM detection,
faulty PLL synthesizes RE unit detection, and incorrect security ID code detection.