User's Manual

15
1.0/November 1998 1891 1210
3.5.4 Parallel Channel Selection
To enable parallel channel selection mode select the F8 (Select channel) function key and
then enter ‘999' as the new frequency. The screen then displays ‘parallel mode selected’.
Three inputs RB1, RB3 and RB3 applied via PL1 to pin 8, pin 9 and pin 10 respectively,
select the operating channel as shown in the following table:
CHANNEL SELECTION
PIN 8 PIN 9 PIN 10 CHANNEL
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
3.5.5 Programming Random Channels
Random channels between 0 and 15 can be entered using the Up 8 and Down 9 arrow
keys and then entering the required operating frequency. The entered value must be an
integer multiple of 12.5kHz otherwise an ‘invalid’ message is displayed.