Operating instructions

18 1892 1344 - SX450G Transceiver Operator Guide v1.7 / Nov 2007
v The list displays all valid values for the starting frequency, that is,
frequencies within the switching bandwidth which are multiples of the
Comparison Frequency.
Select a Table Start frequency from the list and a Table Step and click OK. The dialog is
removed and the main table shows the channel frequencies.
To set the Rx Offset for the whole table, select Parameters > Rx Offset and pick from the
list of possible values.
Programming Up To 80 Channels Individually
Double-click the Tx Frequency value for the channel to program in the main frequency
table, which brings up this dialog:
Figure 9 - Frequency Programming Dialog
v Valid values for the starting frequency are frequencies within the switching
bandwidth which are multiples of the Comparison Frequency.
Select a Table Start frequency, ignoring the other parameters, and click OK. The dialog
is removed and the main table shows the channel with its new frequency.
To set the Rx Offset for the channel, select Parameters > Rx Offset and pick from the list
of possible values.
It is also possible to program a range of channels automatically in a similar way to the
256 channel block. In the Frequency Programming Dialog, select the range of channels
required (the From and To drop-downs), a Table Start and Channel Step, and click on
OK. The dialog is removed and the main table shows the channels with their new
frequencies.
It is not possible to select Rx Offset for a range of channels; this must be done
individually.
Setting Operational Channel
The unit must be told which of the 80 or 256 channel settings to use when it is powered
up. If PL1 pin 6 is open-circuit or logic high (>2.0V) for more than 1ms at power-up, then