HandHeld SV series, User Manual

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6 - 44 Quick Check® SV Series User’s Guide
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.
LED Operation
1. LED1 will turn on when Port 3 is active due to ANSI, Symbol Contrast, X
dimension, ratio, mod check or quiet zone error conditions.
2. LED1 will flash when Port 3 is active due to a data increment or decrement
error condition.
3. LED2 will turn on when Port 3 is active due to a partial, % decode or no read
error conditions.
4. LED2 will flash when Port 3 is active due to a Data Match error condition.
5. Flashing indication will override a solid on indication if both types of error
conditions occur.
Note: Both LEDs can be on in cases where multiple bar codes are analyzed in
a sync period.
SV Commands Important to this System
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.
~LV19
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
~LQ0
This command disables partial decodes to activate output ports.