Operating instructions

10 1892 1236 - SX500 Transmitter Operator Note - v1.6.1 / Apr 2005
Unit Programming Commands
To access these 4 functions, double-click on the text or highlight and press ENTER. When
accessed, the relevant data areas on the other three screen areas are highlighted to show
which data is being transferred.
Set parallel ch. mode Changes the SX500 from serial channel selection mode to/from
parallel.
Read from the unit Download the data from the SX500, assuming that the correct
interface lead has been made.
Program unit Send all the data displayed on the screen to the unit.
Program serial channel Send the new serial channel number to the unit.
Parallel Channel Selection
Three inputs RB1, RB2 and RB3 applied to PL3 pins 11, 12 and 13 respectively, select the
operating channel as shown in the following table:
CHANNEL SELECTION
Most
Significant Bit
Least
Significant Bit
CHANNEL
PIN 13 PIN 12 PIN 11
LOW LOW LOW 7
LOW LOW HIGH 6
LOW HIGH LOW 5
LOW HIGH HIGH 4
HIGH LOW LOW 3
HIGH LOW HIGH 2
HIGH HIGH LOW 1
HIGH HIGH HIGH 0
The logic levels are: LOW = < 0.8V,
HIGH = > 2V or floating