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APPENDIX A: SPECIFICATIONS
ANALOG SPECIFICATIONS
Full Scale Input Signal ±3.125 mV/V
Minimum Sensitivity - Non trade
0.3
V / grad
Minimum Sensitivity - H-44
0.6
V / grad
Input Impedance
30M
, typical
Internal Resolution Approximately 130,00 counts @ 1mV/V input
Display Resolution 50,000 display division max
Measurement Rate 10 Hz/80 Hz selectable
System Linearity Within 0.02% of FS
Calibration Method Software Calibration, with long term storage in EEPROM
Excitation Voltage
+5 VDC, 12 x 350
load cells
DIGITAL SPECIFICATIONS
Microcontrollers Silabs C8051F340
Program Memory
64K x 8, internal to
C
SRAM:
2Kx 8, internal to
C
EEPROM:
256 x 8, external to
C, 8K x 8, external to
Digital Filtering Software selectable
SERIAL COMMUNICATIONS
Serial Ports (Both) Full Duplex, selectable Baud rate
8 data bits, no parity, 1 stop bit
7 data bits, odd parity, 1 stop bit
7 data bits, even parity, 1 stop bit
7 data bits, no parity, 2 stop bits
CONTROL I/O
Outputs Four cutoff outputs, open collector design
Input One configurable logic level input for keyboard functions
OPERATOR INTERFACE
Display 1" (25 mm) 7-segment, LED, 6 Digit
Additional Symbols Net, Gross, Stable, Tare, lb, kg, Zero, Over, Under, Accept
Keyboard 24-key flat membrane switch
POWER
Mains 100-240 VAC, 50/60 Hz, 30W
DC Power Consumption
200mA + 15mA/350
Load Cell
Fuse (Internal) 1A 250V SLOW BLOW
ENVIRONMENTAL
Operating Temperature
–10° to +40
C (14° to 104° F)
Storage Temperature
-25° to +70
C (-13° to 158° F)
MECHANICAL
Overall Dimensions (L x W x H) 12.2" x 8.15" x 3.94" (310mm x 207mm x 100mm)
APPROVALS
NTEP CC # 10-078
Canada NOA # AM-5801
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