User's Manual

Jotron AS| TR7750C: Operators Manual  Installation
Page 4-14
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4.6.6 Miscellaneous signals, transmitter
Figure 4.6-5, Misc signals, transmitter
 RX BUSY (SQ) (REM, pin 5)
This signal is only available when a receiver is connected with a 8 pin bus between the
transmitter RX and the receiver REM connector.
The signal is the same as the RX BUSY from the receiver, settings are done on the receiver
unit.
 KEY_OUT_P, KEY_OUT_N (AUX2, pin 1 and 2)
This output can be used for external equipment that needs a key signal from the transmitter.
The key signal is available immediately after a key input is received on any of the key inputs.
Normally RF is produced only a few ms (<10ms) after a key signal is applied to the
transmitter.
If the KEY_OUT is used for external equipment that used relays for switching the RF, it is
necessary to delay the RF output, this can be done with a software setting, see below.
 TXLOW_P, TXLOW_N (AUX2, pin 4 and 5)
This input is used to immediately switch the transmitter into low power. The input requires
an external pull-up to work. The low power level can be adjusted with a software setting.
Menu path:
Radio control
►
Parameter
Range
Default
Details