7 communication, 8 analog circuitry, 9 capacity and division – Salter Brecknell 6700U Series (USB) User Manual
Page 22: 10 accuracy, 11 calibration method, 7 communication 3.8 analog circuitry
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67XXU USB/Serial Scale Service Manual
3.7 Communication
3.8 Analog Circuitry
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24-bit A/D converter
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Conversion Speed: 10Hz
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Input range: -15mV to +15mV
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Output code:1mV input will output about 100,000 raw counts
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Hardware low pass filter and 2 programmable digital low pass filters
3.9 Capacity and Division
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Programmable
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Max display range: -199,999 to 199,999
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Division number range for primary unit: 100-20,000
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Division number range for second unit: 100-25,000 (division number will
be limited by REGUL setting)
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Recommended Sensitivity: >1µV/ display division
3.10 Accuracy
≤0.01%
3.11 Calibration Method
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Software calibration with long-term storage in EEPROM
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Provides smooth curve fit through four points
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Calibration can be done under kg or lb weight unit with 10% -100%FS
standard weight.
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Weight fine adjustment (±
10%)
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Geographic adjustment
Serial port1
Full-duplex RS-232
Optional Serial Port
USB (Virtual RS-232)
Baud Rate
Selectable: 1200-2400-4800-9600-19200-38400 bps
Data Output Format
8N1, 7O1, 7E1
Protocol
programmable