18
APPENDIX A: SPECIFICATIONS
ANALOG SPECIFICATIONS
Full Scale Input Signal
±3.125 mV/V
Minimum Sensitivity - Non trade
0.3
µ
V / grad
Minimum Sensitivity - H-44/R76
0.6
µ
V / grad
Input Impedance
30M
Ω
, typical
Internal Resolution
Approximately 260,000 counts @ 2mV/V input
Display Resolution
50,000 display division max
Measurement Rate
10/80 Hz, selectable
System Linearity
Within 0.01% of FS
Calibration Method
Software Calibration, with long term storage in EEPROM
Excitation Voltage
+5 VDC, 8 x 350
Ω
load cells
DIGITAL SPECIFICATIONS
Microcontrollers
Winbond W75E58
Program Memory
32K x 8, internal to
µ
C
SRAM:
1024 x 8, internal to
µ
C
EEPROM:
256 x 8, external to
µ
C
Digital Filtering
Software selectable
SERIAL COMMUNICATIONS
Serial Port
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
OPERATOR INTERFACE
Display – LED Indicators
1" (25 mm) 7-segment, LED, 6 Digit
Additional Symbols
Net, Gross, Stable, Tare, lb, kg, Zero, PCS
Keyboard
5-key flat membrane panel
POWER
Mains
100-240 VAC, 50/60 Hz, 30W
DC Power Consumption
200mA + 15mA/350
Ω
Load Cell
Fuse (Internal)
1A 250V SLOW BLOW
ENVIRONMENTAL
Operating Temperature
–10° to +40
°
C
Storage Temperature
-25° to +70
°
C
MECHANICAL
Overall Dimensions (L x W x H)
10.4" x 3.1" x 7.7" (265mm x 80mm x 195mm)
APPROVALS
NTEP
Class
III/IIIL
CC 99-017
Measurement Canada
Class
III/IIIHD Approval No.
AM-5305R01
FCC
FCC Part 15
：
Subpart B
