Denso QB30-SR, User Manual

Page: 60 / 139

11.5 Selectable Scanning Methods
Data output timing and outputs can be set for each scanning mode as shown below.
Scanning mode
Data output
timing
Non-scan code OK signal NG signal
Synchronous mode Enabled Enabled Enabled
Trigger mode
Asynchronous mode Enabled Enabled Enabled
Continuous reading mode
A/B
Asynchronous mode Disabled Enabled Disabled
Auto sense Asynchronous mode Disabled Disabled Disabled
Scanning mode Verification OK Verification NG
Enabled Enabled
Trigger mode
Enabled Enabled
Continuous reading
mode A/B
Enabled Enabled
Auto sense Disabled Disabled
11.6 SHT Signal (External Lighting Synchronous Output Signal)
The scanner output the SHT signal that synchronize to the exposure operation of the scanner from the output terminal 2
when the output terminal 2 is set in the SHT signal. Polar character of the SHT signal can be selected from the
following two types using the commands or configuration software.
Signal polarity During Exposure Except during exposure
Tr ON HIGH LOW
Tr OFF LOW HIGH
Note:
1. Some external lights which will take time for start-up, for example a halogen lamp, may not respond quickly or light up
properly. You are required to use a light, such as a LED, with a faster response.
2. The output terminal 2 output is a NPN open collector and power shall not be supplied from the terminal. Do not apply
power exceeding the specified voltage level to the output terminal 2. It may cause the scanner to break or malfunction.
49