Hand Held Products SV Series User Manual page 82

c. Overall ISO Grade (Programmable, ~LAxx)
d. Bad quiet zone (~PB816xxx000)
e. No Read (if sync is received)
f. Partial decodes and % decode logic programmable (~Lp#, ~Lq#)
g. Number of codes per sync programmable (~LN##, ~LZ##)
h. Symbology modulo check digit
3. Sync polarity - Leading edge high going; time between trailing (low going)
edge to leading edge - 12.5 milliseconds minimum
4. Port 1; acts as strobe (signal ensuring Port 3 condition is stable) in response
to trailing edge of sync input. This signal will go "on" (sink current) between
20 and 100 microseconds after Port 3 condition is stable.
5. Ports 1 and 3 will go high (no current) within 12.5 milliseconds after the sync
input goes high (leading edge).
6. Use ~PR0200 for proper port initialization.
Mode 02 LED Operation
1. LED1 will turn on if Port 3 goes active due to ISO or quiet zone failures
2. LED2 will turn on if Port 3 goes active due to a no read or partial condition
3. The leading edge of a sync input will turn LEDS 1 and 2 OFF.
SV Commands Important to Mode 02
This system is operating in a "mode" rather than fully programmable logic. The
port activation parameters are programmable via the ~PB8 rather than ~PB1,
~PB2, etc. for each individual port. Other commands, such as mode commands
are also available. The commands most useful for this system application are
described below.
~LV02
This command sets this mode of operation.
~Lp0
This command turns off all partial decode logic at the decoder level
~Lp1
This command turns on partial decode logic at the decoder level
~LQ1
This command allows partial decodes to activate the output ports
6 - 34 Quick Check® SV Series User's Guide