FUTABA T18SZ Instruction Manual page 45

If the receiver's voltage does not display on the transmitter
◆ When the receiver has the transmitter's ID in memory, a link is established and normal
operation is allowed.
◆ When the transmitter has the receiver's ID in memory, a link is established and
telemetry functions are usable.
The transmitter stores receiver IDs by model; thus, if it does not have a particular
receiver model ID stored in memory or has a different receiver ID stored, telemetry
functions will be unusable. However, the device is operable as long as the receiver has
the transmitter's ID stored in memory.
Link of model 1
Link
Tx ID: xxxxxx2
Operable
Model 1: Receiver ID: xxxxxx1
Model 2: Receiver ID: ---------
Model 3: Receiver ID: ---------
Telemetry usable
Receiver ID: xxxxxx1
stored for Model 1
When setting up a new model, before using it, first
establish a link with the receiver that will be used
with it.
Rx ID: xxxxxx1
Telemetry functions unusable because
Model 2 does not have receiver's ID
stored in memory.
Transmitter switched to Model 2 and
link reestablished
Tx ID: xxxxxx2
stored
Model 1: Receiver ID: xxxxxx1
Model 2: Receiver ID: xxxxxx1
Model 3: Receiver ID: ---------
Model 1 → Model 2
Model 1: Receiver ID: xxxxxx1
Model 2: Receiver ID: ---------
Model 3: Receiver ID: ---------
Telemetry usable
＜ Basic Operation ＞
Device is operable if receiver
has transmitter's ID stored in
memory
Tx ID: xxxxxx2
stored
Link
Rx ID: xxxxxx1
Because receiver IDs will be stored
in the memory of each transmitter
model, it is unnecessary to
reestablish a link once the receiver
ID has been stored in memory for
a given model.
Rx ID: xxxxxx1
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