17
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 0.02% of FS
Calibration Method
Software Calibration, with long term storage in EEPROM
Excitation Voltage
+5 VDC, 4 x 350
Ω
load cells
DIGITAL SPECIFICATIONS
Microcontrollers
•
Winbond W78E58 (Standard Chipset)
•
Winbond W77E58 (Enhanced Chipset)
Program Memory
•
32K x 8, internal to
µ
C
SRAM:
•
512 x 8, internal to
µ
C (Standard Chipset)
•
1024 x 8, internal to
µ
C (Enhanced Chipset)
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
0.56" (14 mm) 7-segment, LED, 6 Digit
Additional Symbols
Net, Gross, Stable, Tare, lb, kg, Zero, PCS
Keyboard
5-key flat membrane panel
POWER
TI-500E Plus (AC Adapter)
9 VDC, 500mA Female
DC Power Consumption
80mA + 30mA/350
Ω
Load Cell
ENVIRONMENTAL
Operating Temperature
–10° to +40
°
C
Storage Temperature
-25° to +70
°
C
MECHANICAL
Overall Dimensions (L x W x H)
8.5" x 3.0" x 4.6" (215mm x 75mm x 117mm)
APPROVALS
NTEP Certified
COC # 94-080A3
CE mark
Electromagnetic Compatibility (EMC) Directive
2004/108/EC
FCC
FCC Part 15
：
Subpart B
