Matrix Orbital GTT38A - Manual (Page 18)

GTT38A Hardware Manual 14
Communication Characteristics
Table 18: RS232 Interface Characteristics
Parameter Min Typ Max Unit
Input Threshold Low 0.6 1.2 - V
Input Threshold High - 1.5 2.4 V
Output Voltage Swing ±5.0 ±5.4 - V
Input Resistance 3 5 7 kΩ
Output Resistance 300 10M - Ω
Output Short Circuit Current - ±35 ±60 mA
Table 19: USB Interface Characteristics
Parameter Min Typ Max Unit
Static Output High 2.8 - 3.6 V
Static Output Low - - 0.3 V
Input Differential Threshold 0.2 - - V
Common Mode Output Voltage 0.8 - 2.5 V
Driver Output Impedance 26 29 44 Ω
Table 20: I 2 C Interface Characteristics
Parameter Min Typ Max Unit
Input Threshold Low - 0 1.0 V
Input Threshold High 2.3 3.3 3.6 V
Output Voltage Low - 0 0.4 V
Output Short Circuit Current - - ±50 mA
Table 21: TTL Interface Characteristics
Parameter Min Typ Max nit
Input Threshold Low - 0 1.0 V
Input Threshold High 2.3 3.3 3.6 V
Output Voltage Low - 0 0.4 V
Output Voltage High 2.9 3 3.3 V
Output Short Circuit Current - - ±50 mA
Table 22: RS422 Interface Characteristics
Parameter Min Typ Max Unit Remarks
Input Voltage (A and B) -7.0 - 12.0 V
Input Differential Threshold -200 -125 -50 mV -7V < Vin < +12V
Differential Driver Output 2 - 3.3 V RL = 100Ω
Common Mode Output Voltage - 1.65 3 V
Input Resistance 96 - - kΩ -7V < Vin < +12V
Driver Short Circuit Current Limit - - 250 mA
Receiver Output Short Circuit Current - - 95 mA
6.8 Defect Criteria
Display Specifications
Table 23: Display Defect Criteria
Defect Condition Criteria
Bright
Dots
Red + Green + Blue 0 Dots
Dark
Dots
Red + Green + Blue ≤ 2 Dots
Total Bright Dots + Dark Dots ≤ 2 Dots
Appearance Specifications
Table 24: Screen and Touch Defect Criteria
Defect * Condition Critera
Circular
Objects
(Stains, Dust, Scratch,
Bubble, Dark/White
spot, Foreign matter)
d ≤ 0.10mm Allowed
0.10mm < d ≤ 0.15mm ≤2points
0.15mm < d ≤ 0.25mm ≤1points
0.25mm < d 0points
Linear
Objects
W≤0.03mm Allowed
W≤0.03mm, L≤2.5mm ≤3points
W≤0.05mm, L≤2.5mm ≤2points
W>0.1mm, L≥1.0mm 0points
*Note: Defects must occur in Active Area