If a preset time limit passes without any operator commands (the programmable Close Start lockout time), the
Close Start system will lock out all further operations until the operator moves back within the Close Start
unlocking range.
Range Limit: Range limit is a programmable option that restricts the maximum range between the remote control
operator and the equipment he or she is controlling.
The Range Limit feature uses RF signal strength to determine the distance between the controller and receiver.
This feature requires the use of the triple diversity antenna system. If the signal strength from all three antennas
falls below a preset value, the controller is too far from the receiver and Range Limit becomes active. Once the
Range Limit feature activates, the signal strength must increase to 3 dB greater than the Range Limit set-point
before the receiver will return to normal operating mode. This requires the operator to move closer to one of the
antennas to reduce intermittent operation at the extremes of the range limit perimeter.
Range Extend: The Range Extend option is the opposite of Range Limit and requires the use of the triple diversity
antenna system. When Range Limiting is not in use, the receiver can be put into Range Extend mode. When a
system with the Range Extend option enabled receives a signal, the signal strength is measured from each
antenna. The antenna with the strongest signal strength is used to receive the remainder of the signal. This
ensures that the best possible signal is used, thereby optimizing the range of the system.
Note: The Range Extend feature cannot be used in conjunction with the Range Limit feature.
Scanner: The optional Scanner function allows the receiver to automatically scan up to 16 factory or field
programmed frequencies for signals from the controller. Scanning is stopped on the desired channel by the MP96
decoder when it decodes the proper data (address, BCH, auxiliary functions, etc.). This feature can be used in
multi-controller applications where controllers operate on different frequencies.
Note: The EMI/RFI shielded chassis, or ‘Gold Box’, must be modified to enable the scanner function to
operate properly. Contact Cattron at www.cattron.com/contact before enabling this feature.
Attenuator: The Attenuator reduces the incoming radio frequency signal level seen by the receiver from the
controller or from other RF sources. The R2HN receiver’s attenuator is fixed and is 22 dBm to 28 dBm. Enabling
the attenuator option has the effect of reducing the range at which the machine may be controlled and also makes
the receiver less susceptible to interference caused by RF signals on, or adjacent to, the equipment operating
frequency. An external attenuator can be used if a different amount of attenuation is necessary.
Factory Preset and Field Programmable Frequencies: In order for the receiver and the controller to communicate,
they must be set to the same frequency. Cattron receivers and controllers offer multiple frequency selections for
maximum versatility. While the factory preset frequencies should be adequate for most users, there may be
conditions where it is necessary to program a frequency. Typical examples are when installing a spare
receiver/decoder or controller that operates on a frequency that has not been preset at the factory, or when other
sources or systems are emitting RF signals that interfere with safe operation.
4.9.3 R3HNX Transceiver Board
The R3HNX receiver section incorporates all the features of the R2HN above. Additionally, it has a built-in RF
transmitter for ‘TALKBACK
®
’ radio transmission of data.
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