Operating instructions

1892 1236 - SX500 Transmitter Operator Note - v1.6.1 / Apr 2005 9
Maximum Frequency The maximum frequency that the unit can work on is determined
by the physical build of the unit and the alignment of the unit. If
a frequency outside the alignment band is selected then the
operation of the SX500 will no longer be to the stated
specification. The maximum switching frequency over which the
unit will operate is 5MHz. The software uses this 5MHz limit to
calculate the maximum frequency from the minimum set and uses
this for the selectable frequencies in the drop-down list displayed
when selecting frequencies. This 5 MHZ band can be different
for the transmit and receive frequencies.
Receiver Offset The normal operation of the SX500 is with the transmit and
receive frequency the same. If an offset is required, a fixed offset
can be made between the frequencies by double-clicking to bring
up a selection of offsets. If a frequency outside the alignment
band is selected then the operation of the SX500 will no longer
be to the stated specification
Max. Channel Number This number will determine how many sequential channels are
programmed into the table.
Serial/Parallel To ensure the correct operation of the unit after programming set
this flag accordingly. After programming the unit the serial or
parallel mode will be set according to this selection.
Serial Channel No. To change channel select a new channel number by right-clicking
to bring up a list or double-clicking to select the field to modify.
Random Channel Table
The first 24 channels of the SX500 can store randomly selected channels, which are non-
sequential or separated by a common gap. To change an existing frequency, double-click
the particular channel. Either type in a new frequency or select from a displayed list of
allowed frequencies.
Sequential Channel Table
To program these frequencies, ensure that the Max. Channel Number field in the “Current
Settings” is set correctly. Under the “Sequential Channel Table” area enter the start
frequency and the Table Step size to set the frequencies in the table.