Rx6x Features (v610)
This page describes Rx6x features in some detail. These receivers have some 'depth'. You are not expected to use every feature and receivers come with default settings that meet common needs. But when you want to add a new feature like controlling lights or using different sticks for functions, the flexibility is there.
[CH] - CHANNELS
This Rx is compatible with DSM2 and DSMX transmitters. Most joysticks, switches and knobs on hobby transmitters control separate 'channels'. These are numbered and have some common names which are referred to below (eg: Ch1 Throttle). All outputs on the Rx can be used with any channel.
[BATTERY] - BATTERY POWER
Each Rx has an operating voltage range. They all work down to 3v and some work up to 18v DC. This allows it to be used with many battery combinations. 1S, 2S, 3S and 4S lipos are common choices (3S = 3 cells in series).
The motor output of each receiver has a current rating which should not be exceeded. This is usually given as a maximum value which equates to the motor stalled at 100% throttle.
There are no minimum or maximum battery capacity requirements (mAh).
[TRACK] - TRACK POWER
The Rx can be powered from rail track power including DCC. A bridge rectifier is needed on the train to handle AC or reverse DC polarity. A capacitor is needed on the train to reduce brownouts/LVC (5-flash on Rx). A regulator is needed if track voltages exceed the maximum for the receiver.
[M_TYPE_1] - MOTOR CONTROL - 'CENTER OFF'
The Rx has an integrated forward/reverse motor controller for brushed motors (ESC). With this setting, one channel is used to control the motor in both directions. Center is off, Left is reverse, Right is forward. Any channel can be used. It works like the 'Balance' control on a stereo HiFi.
[M_TYPE_2] - MOTOR CONTROL - 'LOW OFF'
This option uses two channels to control the motor. Full movement of one channel is used to control the power level regardless of direction. Left is minimum, Right is max. Any channel can be used. It works like the volume control on a HiFi.
Forward/reverse direction is set with a second channel. Direction can be changed at any time but only takes effect when the throttle is closed and reopened. If the Direction channel is a self-centering joystick you simply push it in the required direction and let the stick center again. If it is a 2-position switch like on Tx21 it is toggled and left in the required direction.
'Low off' + seperate Direction switch (eg: 1,1,2,1,3 = Menu1, H1 output, Low off, Ch1 for Speed, Ch3 for Direction).
[M_MIN] - START POWER
The power level can be made to go quicky to a minimum level as the throttle is opened. It can be set to 0 to 100%. The default is 0%.
[M_MAX] - MAX POWER
The maximum power level available at full stick can be reduced to match engine speeds for a consist or overpowered vehicle. It can be set to 0 to 100%. The default is 100%.
Jump to a minimum power when throttle is opened (eg: 1,1,4,2,5 = Menu1, H1 output, Start power, 25%).
[M_REV] - MOTOR REVERSE
The motor's direction of rotation can be reversed using this programmable setting. This may simply be for convenience or to make a temporary change to suit a push/pull consist. This feature affects the Directional Light feature.
Another way of reversing the motor direction is to place the throttle at max before the Rx is switched on. The motor's direction will toggle each time you do this. Both techniques have the same result. Changing the motor direction with this approach also affects the Directional Light feature.
[M_PWM] - PWM FREQUENCY
Motor speed is regulated with PWM. The default PWM frequency is 'auto' which uses 16kHz. This can be changed to fixed frequencies for special effects. For instance lower frequencies have more torque but are less smooth and make more motor noise. 15Hz makes a motor in a boat sound like a pop-pop motor.
[M_SOFT] - SOFTSTART / INERTIA
Softstart smooths changes to motor power. It has an 'inertia' or 'momentum' effect. By default it takes a little under 0.5s to go from 0 to 100% throttle. This can be made more or less responsive.
[LVC] - LOW VOLTAGE CUTOFF
Lipos are damaged if over-discharged. The Rx cuts power to the motor when the voltage falls too low. Power can be applied to the motor again if the operator first closes the throttle. Recharge your battery when this happens. The cut-off threshold is selected automatically based on the highest voltage measured. Measurements should be within 2% accuracy.
3v for <4.3v measured at startup
4v for 4.3-6v
6v for 6-9v
9v for >9.1v
The Rx does not have an automatic threshold for 4S lipos. And some battery chemistries need other thresholds. So the voltage thresholds can be set manually. 4S lipos would normally need a 12v cutoff. The threshold cannot be set to less than 2.6v.
[BOOST] - MONITOR LIPO IN VOLTAGE BOOSTER
If an external voltage booster powered with a 1S lipo is used, the Rx can monitor the lipo's voltage. The Rx will cut power to the motor when the lipo voltage falls to 3v. This cut-off level can also be set manually. More details.
[DSMVER] - DSM VERSION
The Rx is compatible with:
- DSM2 'Air' transmitters
- DSMX 'Air' transmitters
- DSM2 'Surface' transmitters (steering wheel/throttle trigger)
[BIND] - BINDING
The Rx has to be 'paired' with your Tx. This is called Binding. You only have to bind once. Your Tx can be bound with any number of compatible Rx's. The Rx can only be bound with one Tx at a time.
Auto Bind: The Rx will enter bind mode about 22s after being switched on. The led will flash fast. You then hold the bind button in on your Tx and switch the Tx on. The led should flash for a few seconds and then come on solid. Job done. If a bind signal is not detected within 1 minute, the Rx will exit bind mode.
Manual Bind: If this option is enabled, you have to connect the two pads together and then switch the Rx on. The Rx will enter bind mode immediately. The led will flash fast. Remove connection between pads. Same procedure with Tx as above.
[XPLUS] - X-PLUS CHANNELS
When X-Plus channels are available (eg: from the DX10, DX18) up to 18 channels can be used to control outputs. X-Plus channels X1-X8 will appear as Ch11 to Ch18. X-Plus has to be specifically enabled in the receiver. X1 and X2 will be based on 2048 resolution (= Ch11-12). X3-X8 will be based on 512 resolution (= Ch13-18). An X-Plus expansion module is not needed.
For normal use without X-Plus, up to 12 channels are available to control outputs. This is the default. A special option exists for up to 14 channels (also without X-Plus). These will all be based on 1024/2048 resolution.
[SLEEP] - SLEEP
The Rx will go into sleep mode to save power if the throttle is not changed for an extended period of time. The time to enter sleep mode can be set between 1 and 6 hours or 'never' (sleep disabled). The default is 1hr. The Rx has to be switched off and back on to use it again. Receivers draw 1mA in sleep mode. Except for Rx62, this is not normally a substitute for an on/off switch.
Disable Sleep (eg: 5,3,7 = Menu5, Sleep, Never).
[REED] - eSWITCH
Rx62 has an integrated electronic On/Off switch. The receiver has a reed switch which is used to activate the eSwitch. A magnet needs to brought to close proximity for two seconds or more to make it latch on. When switching off, the receiver only switches off 2s after your remove the magnet to avoid false-triggering. It is helpful to be able to see the led on the Rx so you know if it is on or off. The 'LED2' feature can help in this regard. Alternatively simply wait a few seconds and test whether the Tx can operate the model.
The receiver needs to be mounted away from other magnetic fields such as motors and speakers. The reed switch itself simply acts as a momentary action switch to toggle the electronic switch on/off. So a small push-button switch can be wired in place of or in parallel with the reed switch on the Rx.
A big benefit of the eSwitch is the Rx can be switched off remotely from the Tx. The Sleep timer mentioned above also switches Rx62 off completely.
[FAIL] - FAILSAFE
The normal behaviour of the Rx on signal loss is to stop the motor. This is called 'failsafe'. It holds the last known throttle position for 1 second and then closes the throttle smoothly over another 3 seconds. This can be reduced to 1s for a quicker response. Switching the Tx off is one way of invoking an emergency stop. Control can be restored by switching the Tx back on. A radio controlled Emergency Stop feature also exists (see below).
[FAIL] - CRUISE CONTROL
A model can be made to continue running without conventional radio control. Options are:
(1) Selecta: When you deselect the loco using the Selecta feature, Rx6x-22 receivers are configured to 'continue' running.
(2) Cruise Control: When you set the 'failsafe' duration to the SLEEP time the motor will hold its speed when the transmitter is switched off. If the sleep time is set to 'never sleep' the train will continue running forever.
(3) Stop & Reverse: A train can be made to run back and forth automatically on a 'shelf' type display with the radio on or off (see below).
In all cases, if LVC (low voltage cutoff) is enabled the LVC function will stop the motor when the battery reaches the minimum voltage.
1. Enable Cruise Control by setting time to stop after signal loss to 'sleep time' (5,4,5).
2. Optional: Change Sleep time if 1hour is too short (eg: 5,3,7 = never sleep).
[STOP] - EMERGENCY STOP
By default, the motor will stop 4s after switching the transmitter off (see Failsafe above). A radio controlled Emergency Stop feature is also available. For example, the Ch5 Bind button can be used to stop all trains being controlled with that transmitter. The Throttle has to be closed and the triggering channel has to be released to be able to start the motor again. From v610-7 the motor can be made to decelerate progressively over 1-6 seconds.
Enable Emergency Stop (eg: 5,5,2,5,3 = Menu5, Emergency Stop, when channel is Low, Ch5, 3s deceleration).
[BUFFER_1] - BUFFER STOP
A train can be made to stop automatically to avoid hitting a buffer or other obstacle. This requires a 'trigger' in the tracks to initiate the stop. The easiest may be a reed switch under the loco and a magnet between the tracks. The magnet can then be moved to adjust the trigger point, or removed entirely at any time if the stop is no longer required.
Trigger: One 'P' pad is used for this feature. The pad idles 'high' (3v) and requires a 'low' (0v) to trigger the stop. This normally requires a simple normally open switch which can be mechanical, optical or magnet based. The moving train is expected to make the P input go low briefly (connect the P pad to Negative) and then 'release' after passing the trigger point. It would not normally be a latching type switch.
Deceleration: The train will decelerate to a stop automatically regardless of the throttle setting. It does this in a controlled, progressive manner. The time it takes to decelerate is adjustable between 1-6 seconds with the 'Time to stop' setting. The throttle has to be closed before the motor can be controlled again.
Reverse: Where the stop is a dead-end / cul-de-sac, the operator will normally reverse out manually. The trigger sensor is deactivated for a period of time so that you can pass over the trigger point without it causing the train to stop again. The time it takes to reactivate the trigger is adjustable between 10 and 60 seconds with the 'Reactivate trigger' time setting.
'Step & Reverse' (below) cannot be used if this 'Buffer Stop' feature is in use. This feature was implemented in v610-7.
1. Enable Buffer Stop (eg: 3,4,7,6,2 = Menu3, P4, Buffer Stop, 6s deceleration, 20s reactivation).
2. Connect reed switch between P4 and Negative.
3. Install magnet between tracks.
[BUFFER_2] - STOP & REVERSE
This feature is similar to Buffer Stop (above) except that it is intended to make a train stop and reverse automatically. As with the Buffer Stop it requires a trigger in the tracks to initiate the stop. Two triggers are intended to allow a train to automatically travel back and forth over a length of track without operator intervention.
Throttle: The same throttle setting is used after each direction change. The operator can adjust the throttle and regain control at any time. The only 'strangeness' will be when the throttle is set to a 'forward' speed and the train is currently going in reverse. In this situation, the train must be stopped to automatically resync the direction of the knob and direction of travel.
Deceleration: The time to stop is adjustable between 1 and 6 seconds. It will then pause before reversing automatically.
Pause: The time stationary is adjustable between 1 and 6 seconds. This time can be fixed or random.
Acceleration: After the pause the train will automatically and gradually accelerate in the opposite direction. The acceleration phase takes 6s if the throttle was set to 100% and proportionately less time at lower throttle settings.
Trigger reactivation: The trigger is reactivated 10s after the end of the pause. So if a train is required to travel back and forth automatically between two trigger points, they must be more than 10s journey time apart.
Selecta: The 'Buffer Stop' and 'Stop & Reverse' features are operational when a train is used with 'Selecta'. Both features work whether the loco is currently selected or not to allow fully automatic operation.
Cruise Control: If 'Cruise Control' is enabled, the 'Buffer Stop' and 'Stop & Reverse' features are operational when the transmitter is switched off. Once started the 'Stop & Reverse' feature allows unattended continuous operation with only the train switched on for 'shop window' or 'shelf' type displays. The Transmitter is only needed to start and stop the sequence or to operate the train normally away from the trigger points.
If LVC (low voltage cutoff) is enabled the LVC function will stop the motor when the battery reaches the minimum voltage. If SLEEP is enabled, the train will stop when the sleep time expires.
'Buffer Stop' (above) cannot be used if this 'Stop & Reverse' feature is in use. This feature was implemented in v610-7.
1. Enable Stop & Reverse (eg: 3,4,8,6,7 = Menu3, P4, Stop&Reverse, 6s deceleration, Random pause).
2. Connect reed switch between P4 and Negative.
3. Install magnet between tracks.
[LED2] - LED2
The led on the Rx often reveals the state it is in. If the Rx is concealed in a model and another led is being controlled by one of the 'P' outputs, the Rx's led activity can be mirrored on that other led. This mirroring only occurs up until the Rx become Armed. Once armed the 'LED2' activity stops and the normal activity of that output commences. So for example, the front light on a car or train can reveal what the Rx is doing as it starts up, binding, programming, etc and then operate as a front light in normal use.
Three 'enabled' options exist:
* The 2-flash option is as described above.
* The 3-flash option suppresses the flashes every 2s when the Rx is scanning for a signal at startup.
* The 4-flash option shows scanning flashes at startup but suppresses them in 'Cruise Control' (after Tx switched off).
Enable LED2 (eg: 5,1,2,3 = Menu5, LED2, Enabled always, on P3).
[BATT_V] - BATTERY VOLTAGE FLASHES
The led on the Rx can be made to reveal the battery voltage. For example (if enabled) if the Ch5 Bind button is pressed briefly, the led will usually flash two sequences. The first is Volts and the second is Tenths. 7.2v would flash 7 then 2 times with a pause between them. 7.0v would only flash 7 times.
The feature can also make a P output flash for an external display. The primary purpose of the output will normally be for something else (eg: Directional Lights). The battery flashes will override that function for the duration of the flashes. Available from v610-4.
Enable Battery Voltage display (eg: 5,9,3,5,3 = Menu5, Voltage flashes, Enabled on a pad, invoked with Ch5, on P3).
[PADS] - 'P' OUTPUTS
Receivers have pads that can be used to control servos and operate external leds.
When used for servos, the P output provides the control signal to the White or Yellow wire of a servo. The +/- for the servo needs to come from another source as shown in the receiver instructions.
When used for leds, the P outputs are normally 3v when ON and 0v when OFF. Current should be limited to <20mA as described in the receiver instructions.
Rx65 has a 'buffered' output, Pad 'A'. This output can drive 2A loads. It is 0V when ON and disconnected (floating) when OFF.
[SERVO_1] - STANDARD SERVO
This is a standard servo output. The position of the servo is proportional to the position of the controlling channel. It can control a servo or external ESC (eg: brushless). Rx61 has a 4v BEC to power a small servo (up to about 2g in weight).
There are some options for how the output works:
1. Speed setting '1' is normal. The servo simply moves to wherever the channel tells it at normal speed.
2. Speed settings '2-6' make the servo change position more slowly. This is intended to be used when operating a coupling, hatch, etc. with a switched channel (eg: Ch5 Gear).
[SERVO_2] - OFFSET SERVO
This feature gives full servo movement from a half stick movement on the Tx. It is intended to operate a coupling with a self-centering joystick where mid-stick is the closed position for the coupling.
The servo is at one extreme when the stick is centered (coupling closed). The servo moves to its other extreme in a proportional manner as the stick is moved (eg: to the right) to open/release the coupling. The servo returns the coupling to its closed/locked position when the stick is centered. The servo does not move when the stick is moved the other way.
[SERVO_3] - TOGGLE SERVO
A servo can be made to move from one extreme to the other each time a button is pressed. This is useful for train couplings. The position of the servo toggles each time the controlling channel is made low. The amount of movement is controlled by the receiver and can be set from 60% to 120% in 10% increments (eg: 5-flash (default) = 100%). The receiver remembers the last position when switched off.
[SERVO_4] - MIXED SERVO
This feature controls two servos with controlling channels that are mixed. It can be used to operate two servos or two external ESC's (eg: differential thrust steering for tank, digger, boat, blimp, etc). It can only be used with P1 and P2 outputs.
[MMIX] - MANY-TO-ONE MIX
This feature produces a servo type signal on one pad. It is intended to control an external sound system that accepts a servo signal. It is intended for models with many motors but only one sound card (eg: excavators, cranes, robots, etc). In these models many channels will be used to control the motor functions. If any of these are 'in use', this mix takes the largest channel deflection and feeds that to the sound system. This normally makes the sound change from 'idle' to a faster/louder sound.
This mix assumes 'center off' motor control. The output will never be less than 'mid stick' position (1.5ms). If any of the input channels are less than or more than 1.5ms, the output will be increased by the greatest difference. For example, if Input1 is 1.6ms and Input2 is at 1.3ms, the Output will be 1.7ms (1.5 + (1.5-1.3) = 1.7).
The mix allows any number of inputs but the maximum is the number of channels your transmitter has. Each input can be associated with any channel. For example, you might want 3 inputs but controlled with Ch3, Ch4 and Ch8. The default Input/Channel assignment is a simple sequence (Input1 defaults to Ch1, Input2 defaults to Ch2, etc.). Any 'P' pad can be used for the output.
The 'delay' settings create a few seconds inertia/overrun. These settings make the output return to center slower than the input channels. This can be used to simulate a motor continuing to run after the load has been removed. This is used in some vehicles to maintain hydraulic pressures, lubrication, etc.
[BR_REV] - BRAKE AND REVERSE LIGHTS (Cars)
A brake light can be made to come on automatically when the throttle is closed. The time that the led is on for can be adjusted from 1-6 seconds with the [BR_ON] setting. The brake light also comes on if the Rx is receiving a signal but is prevented from being armed because the throttle is not closed.
A reversing light can be made to come on automatically while the throttle is in the reverse position.
[FLASH_1] - INDICATORS (Cars)
Two outputs can be configured for left/right indicators. The Activating Channel (eg: Ch4 Rudder) represents the stalk/switch used on a motor vehicle. The Steering Channel (eg: Ch2 Aileron) is the channel used for steering the vehicle. Only the Activating channel can start the indicators flashing. Both channels can cancel them.
The 'trim' on the Tx for the Steering channel often has to be used to make the vehicle run straight. In order to have a true center/narrow deadband for cancelling the indicators, the position of the Steering channel is detected automatically each time the Rx is switched on.
A quick movement of the Activating channel left or right (<2 seconds) starts an indicator flashing. A movement to the Left held for >2 seconds makes both indicators flash as Hazards. The same movement cancels the Hazards.
[FLASH_2] - FLASHING LIGHTS
One output can made to flash rapidly to simulate an emergency light. If Indicators are enabled, the Flasher must use the same Activating channel. A movement to the Right held for >2 seconds starts or stops the Flasher.
[MOM] - MOMEMTARY SWITCH
Outputs are ON while the Tx stick/switch is deflected. Each channel can control two outputs (1 'left', 1 'right'). Both are OFF at center.
1. Use a switch for an Led (eg: 3,2,1,3,1 = Menu3, P2 output, ON while switch is deflected, use Ch3, on when Left).
2. Use a switch for an Led (eg: 3,2,1,3,2 = Menu3, P2 output, ON while switch is deflected, use Ch3, on when Right).
[LATCH_1] - LATCHING SWITCH #1
Outputs toggle ON or OFF each time the Tx stick/switch is deflected. Each channel can control two outputs (1 'left', 1 'right'). Each output latches ON or OFF until the stick is deflected after having been centered.
[LATCH_2] - LATCHING SWITCH #2
This feature is the same as above except that the time a channel is deflected can be used to operate two outputs each way. Each channel can control four outputs (2 'left', 2 'right'). One output on each side toggles ON or OFF each time the Tx stick/switch is deflected for <2 seconds. A second output on each side toggles ON or OFF each time the Tx stick/switch is deflected for >2 seconds.
[DIR_LIGHT] - DIRECTIONAL LIGHTS (Trains)
A Front and Rear light is controlled automatically based on motor direction. This is often used on a train. Both lights start OFF and either the Front or Rear light is switched ON when you open the throttle for the first time. That light stays on until you change direction. The light stays on when you stop. The 'direction' of operation is changed when the Motor Reverse [M_REV] is changed. The function can only be used on 2 designated pads and both are set up by programming one of them.
If a channel number is assigned (1-10), the function can be switched on or off by radio. One light will always be on when the chosen channel is 'high' and both lights stay off when the channel is 'low'. A push-button or joystick can also be used instead of a toggle switch to toggle the feature on and off. The 1-flash would be used with the Tx20/21/22/23 Bind button (Ch5).
If no channel number (0) is assigned, the feature operates as described but one light will always be on and both cannot be switched off.
The IR options operate an Infrared led on a model. Only one IR output must be enabled. The model needs an IR led with current limiting resistor. The layout needs a microprocessor controlled sensing system with a 56kHz 'IR Receiver' (TSOP32156 or TSOP34156). The IR output is enabled while the throttle is on. The IR output is only on every 6s when the motor is off.
[IR1] - IR LED 1
IR1 is used to manually trigger features in a layout. For example, the led on a train can activate points/turnouts in the track when a button is pressed on the Tx. The output is off when the IR1 channel is centered. The output is on when deflected and the 'high' and 'low' positions send out different signals.
[IR2] - IR LED 2
IR2 is intended to automatically identify a moving object to a layout. For example, the led on a train could trigger a 'follow me' sound system. IR2 outputs a static address to identify up to 64 models to the sensing system.
[IR3] - IR LED 3
IR3 is the same as IR2 but the address is the position of a controlling channel. So this has a dynamic address which can be changed from the Tx. For example, it could be used to identify the Tx22 Selecta switch position and thus which loco is running when the others are stopped.
[IR4] - IR LED 4
IR4 is a telemetry feature which outputs the battery voltage. This helps estimate when to recharge because voltage falls as capacity is used up. There would normally be one sensor in a layout and models simply pass over it to have their battery voltage displayed.
[IR5] - IR LED 4 + 1
This option outputs the IR4 voltage while the IR1 channel is centered (IR1 off). When the IR1 channel is deflected (on), the output alternates between IR1 and IR4.
[IR6] - IR LED 4 + 1 + 2
This option alternates between IR2 (static address) and IR4 (voltage) while the IR1 channel is centered (IR1 off). When the IR1 channel is deflected (on), the output alternates between IR2 and IR1.
[IR7] - IR LED 4 + 1 + 3
This option alternates between IR3 (dynamic address) and IR4 (voltage) while the IR1 channel is centered (IR1 off). When the IR1 channel is deflected (on), the output alternates between IR3 and IR1.
[SERIAL] - SERIAL DATA FEED
The position of all channels can be output on 1 pad to feed another module. This option uses RS-232 async serial, 8 bit, no parity, 2 stop bits, LSB first. 3 speeds are available (125kb, 250kb and 500kb). Serial outputs normally occur every 22ms but cease for about 66ms every 1sec while the Rx does something else. The serial output is not possible if IR2 or IR3 are enabled.
1. The first 2 bytes are used to indicate the start of a sequence. Their values are 0xFE and 0x02.
2. The data feed then contains 2 bytes per channel. The high or low byte can be first in each pair. Each channel is output in numeric order (Ch1 first). This data contains the channel position in a 10 bit form (0-1023) with no channel number indicator. The feed provides data for every Tx channel but no less than 7 (even if not relevant).
3. Channel data is followed by 1 byte voltage indicator in tenths of a volt (eg: 36 is 3.6v). It should be accurate to 0.1v but is not calibrated. The maximum valid value is 175 (17.5v).
4. There is then a 1 byte signal strength indicator (RSSI) which has a 0-31 scale.
5. The final 1 byte is a checksum and is the sum of all other bytes cast to 1 byte.
[SUM] - SUMPPM / CPPM
The position of all channels can be output on 1 pad to feed another module. This option uses timed PPM pulses with 300us trigger pulses. All transmitter channels are output, but never less than 7 even if not controlled by the Tx. Channels are output in numeric order, Ch1 first. Frame length can be longer but not less than 22ms. The gap between frames can be longer but not less than 3ms. The SumPPM frame runs independantly of the radio. Channel positions are updated in the gap between frames.
The output can idle high (trigger pulses go low) or idle low (trigger pulses go high). An extra pulse can be added at the end to represent signal strength (RSSI). Divide that converted 10bit 'channel position' by 32 to get RSSI (0-31). No servo pulses are possible if SumPPM is enabled. Serial and SumPPM can be enabled on different pads at the same time but this may cause jitter.
[RESET] - RESET
Rx6x receivers are available in several variants (eg: Rx60-1, Rx60-2, etc). Each variant has settings to suit different types of transmitter or application (eg: cars, trains, etc). Variants can be changed either as a programming option (using a joystick transmitter or Prog1) or with Prog2 (shops).
The 'Factory Reset' option does not change the 'variant' but puts all the settings back to how the current variant is normally supplied from new.
'Selecta' allows receivers to be made active or inactive from the Tx. This allows you to expand the number of functions controlled using two or more receivers, or lets you hop between several models bringing them in and out of service without touching them. This is done by associating each Rx with a position on an activating channel. See video.
[S_RXCH] - RX CHANGE
One channel is used to select models. The position of this channel is memorised during binding. The Rx responds to the Tx only when the channel is in that position. A 'switched' channel is the most practical. However, the 'trim' on a joystick channel can also be used to select up to 5 models. Tx22 is designed specifically for trains and has a 12-position 'loco selector switch'. More details.
[S_STOP_GO] - ACTION WHEN DESELECTED
The normal and safe behaviour when a model is made inactive is for the motor to stop. When the model is something like a train on a continuous loop, the 'continue' option can keep everything running while you use the Tx to operate another model. More details.
[S_TXCH] - TX CHANGE
Two Tx's can be associated with each model. If you flick the switch, the motor in the current active model will stop and it will seek out the other Tx. The 2nd Tx will have to accept the model to take control. More details.
[S_TXCH] - PROFILE COPY
This option is only relevant to Tx Change. More details.
Settings can be changed using the various devices described below. The structure for all changes are in Programming Tables found from the receiver instructions.
Prog3 is the most versatile programmer for DT receivers. It works with Rx6x, Rx4x and Rx102/105 receivers.
Tx20 is intended for controlling trains but has the necessary controls to perform programming in the same way as a joystick Tx. It can only change settings in Rx6x receivers.
A standard hobby Tx can be use to make changes and is probably the easiest for making changes. It can change settings in all DT receivers except Rx102/105.
A small number of changes can be made with a 'paperclip'.
Prog1 can settings at the same time as the Rx is being actively controlled with its main Tx. It only works with Rx6x receivers. Prog1 has mainly been replaced with Prog3.
Prog2 is used to change receiver variants. It is only intended for shops.
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