Evaluation Kit User Manual for FX828 and FX829

EV8000

© 2004 CML Microsystems Plc

25

UM8000/4

1.6.3.19 Automatic Disabling of Input Controls

This software feature shows the user which areas of the device form require user input and also

prevents the user selecting incorrect modes of operation.

An input control disabled by the software will be greyed on the display and will not respond to the

user clicking on it. When the software establishes that the user has modified an input control,

thus eliminating any possible conflicts, the disabled input control will be re-enabled, ready for user

selection.

An example of the conflicting modes of operation is when the FX828 Sub-Audio Transmitter is

enabled. The FX828 data sheet states that the DCS decoder and the Sub-Audio (CTCSS or

DCS) transmitter should not be enabled at the same time. Therefore the DCS Rx checkbox will

be automatically disabled by the software to prevent user selection.

Note:

Windows 3.11 users may find the display text associated with edit boxes to be invisible whilst the

input control is disabled.

1.6.3.20 Direct C-BUS Control

Individual device registers can be written to and read using this pop-up window. The window is

activated by clicking on the Global Menu and then clicking on the C-BUS command.

To perform a write to a device register the user should enter the register address and data in hex

and then click on the Write button. Likewise, to read a device register the user should enter the

register address and then click on the relevant read button, depending on the number of bytes to

be read.