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Scan Timing
11.6 Scan Timing
The following modules acquire data by using relays to switch and scan input channels:
• U8550 Voltage/Temp Module
• U8551 Universal Module
• U8552 Voltage/Temp Module
• U8553 High Speed Voltage Unit
• LR8530 Wireless Voltage/Temp Module
• LR8531 Wireless Universal Module
• LR8532 Wireless Voltage/Temp Module
• LR8533 Wireless High Speed Voltage Module
All input channels are scanned within the set data refresh interval.
Scanning starts with CH1 and then proceeds in order through all channels for which measurement
is enabled (CH1 → CH2 → CH 3, etc.). Once the next data refresh interval has elapsed, sampling
starts with CH1 again.
The scan duration per channel varies with the measurement module type, number of channels in
use, data refresh interval, power supply frequency lter, and wire break detection setting.
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