Christie Digital Systems Ds+5k, Kc-8k, Dw3k-6k, Kc, Mirage S+2-4-8k, Dlv1400-dx, Matrix 4000 Users Manual

							Appendix C 
Serial Communication 
Cables 
 
   User’s Manual     C-1 
A serial link of RS232 or RS422 enables ASCII communication with the projector so 
that it can be controlled remotely from a PC or other controller. From a PC, connect a 
standard 9-wire RS232 serial cable to the 
RS232 IN port. Or, for long-distance (>100 
ft.) links with an RS422-compatible PC or controller, connect RS422 cable to the 
RS422 port. 
 
  
						

							Appendix C: Serial Communication Cables 
C-2      User’s Manual 
 
 
  
						

							Appendix D 
Throw Distance 
 
   User’s Manual     D-1 
Calculating Throw Distance 
It is important throw distance be precisely calculated for your installation using the 
appropriate formula from the chart below. To calculate throw distance you must know 
the screen size and the lens type installed in the projector. In general, the larger you 
want the image to be the greater the distance you must allow between the lens and the 
screen. 
NOTES: 1) Throw distance is 
measured from the screen to 
the center of the projector’s 
front feet. 2) This 
measurement is not 
necessarily parallel to the 
floor as the projector and 
screen may be inclined. 3) 
Due to lens manufacturing, 
throw distance calculations 
have a tolerance of 
± 5%. 
Table A-1 Throw Distance Formulas 
Screen Widths (cm) Lens Throw Ratio Throw Distance Formula (cm) 
Min. Max. 
0.73 0.7618*W+6.7624  150 437 
1.2:1 (long throw) 1.2521*W+10.817 79 812 
1.45-1.8 Min. 1.4789*W-3.6096 
Max.  1.8655*W-8.1977 160 
127 1102 
889 
1.8-2.5 Min. 2.0424*W-74.131 
Max. 2.6076*W-16.638 160 
117 1110 
800 
2.5-4.5 Min. 2.6347*W-11.428 
Max. 4.783*W-29.602 244 
137 1118 
1110 
4.5-7.3 Min. 4.5126*W-6.5502 
Max. 7.423*W-25.184 267 
165 1110 
1095 
NOTES: 1.2:1 (short throw) lens information not available at time of printing. Calculations are 
not shown for 1.2:1 (long throw) lenses. 
Where:  
TD = projector distance from the screen to the center of the projector’s front feet. 
W = screen (image) width (cm) 
 
  
						

							Appendix D: Throw Distance 
D-2      User’s Manual 
 
  
						

							Appendix D: Throw Distance 
 
   User’s Manual     D-3 
 
  
						

							Appendix D: Throw Distance 
D-4      User’s Manual 
 
 
  
						

							Appendix D: Throw Distance 
 
   User’s Manual     D-5 
 
  
						

							Appendix D: Throw Distance 
D-6      User’s Manual 
 
 
  
						

							Appendix D: Throw Distance 
 
   User’s Manual     D-7 
 
  
						

							Appendix D: Throw Distance 
D-8      User’s Manual