96 Preparation for Operation TB7100 Installation and Operation Manual© Tait Electronics Limited December 20057.5.5 ProgrammingPlease see the line-controlled base “Programming” on page 82 for details onhow to program the base station for RF modem operation.7.5.6 Audio Level AdjustmentIn this configuration the system interface connector is not used, so it is notnecessary to set the line output level or line input sensitivity.7.5.7 Programming for FFSK OperationTo program a base station for FFSK operation:Transmitter 1. Read the transmitter or start with a new transmitter data file.2. Use the reset to defaults command under the file menu to ensure allthe mandatory and recommended settings are in their correct defaultstates.3. Open the specifications form and select the correct RF band4. Open the channels form summary tab. Add as many channels as arerequired and for each channel enter the following:■ transmit frequency■ Tx subaudible signalling value■ power level■ bandwidth.5. Open the channels form details tab and for each channel check theUse channel for data check box.6. Open the key settings form and select the required function for eachfunction key. For example:■ FN1 = Preset Channel■ FN2 = Preset Channel■ FN3 = Preset Channel■ FN4 = None.7. Open the data form and in the general tab:■ In the command mode section disable all check boxes.■ In the transparent mode section select transparent mode enabledand de-select the other check boxes.■ Set Power Up State to FFSK transparent mode.8. Open the data form and in the serial communications tab:■ In the serial communications setup field set the FFSK transparent