NEC NP-P451X, NP-P501X Installation and Setup Guide

NEC Display Solutions of America, Inc.

P451X/P501X Installation Guide

Ceiling Mounted and Desktop Rev 1.0
Contents

Product Description, Lens Specs, Notes and Formulas Pg 1
Diagrams & Distance Charts Pg 2
Cabinet Dimensions Pg 3-4
Ceiling Mount Dimensions Pg 5
Input Panel and Control Codes Pg 6

Product Description

Type: 3 panel LCD projector, Dimensions: 15.7” (W) x 4.5” (H) x 11.1” (D)
P451X/P501X: 0.63” p-Si TFT w/MLA Weight: 8.6 lbs
Resolution: 1024 x 768

Fan Noise: P451X: 36 dB / 29dB @ 1 meter Brightness: P451X : 4500 Lumens
P501X : 37 dB / 30dB @ 1 meter P501X : 5000 Lumens

Power Consumption: P451X: 325W (max) BTU’s: P451X : 1109 BTU/hour
P501X: 357W (max) P501X : 1218 BTU/hour

Lens Specifications

Throw Ratio: 1.3 – 2.2:1 (for 100” diagonal) Focal Length: 17.4mm – 29.0mm
Offset Angle: 6.6° - 10.9° (for 100” diagonal) F/#: 1.7 - 2.0
Screen Sizes: 25” - 300” diagonal (4:3) Manual Focus/Manual Zoom

Notes

 For screen sizes not indicated on the projection tables, use the formulas below.

If the figures on the tables do not match the results of formulas, use the figures in the table.

 All calculations are based on a 4:3 aspect ratio.
 Distances are in inches, for millimeters multiply by 25.4.
 Distances may vary 5%.

Formulas

The Projection Formulas use the image width for calculation. For proper projection placement, determine the image width
for the desired screen size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the width for “W” in
the Projection Formulas.
Refer to the diagrams and charts for popular screen sizes on page 2:

Definitions: 4:3 Screen Formulas:

W = Image Width W = H x 4/3
H = Image Height (size) H = W x 3/4
B = Vertical distance between lens center and screen center Screen Diagonal = W x 5/4
C = Throw distance
D = Vertical distance between lens center and screen top
(screen bottom for desktop application)

Projection Formulas:
B = 0.258W
C (wide) = 1.366W – 1.77
C (tele) = 2.268W – 1.77
D = -0.117W

α (wide) = tanˉ¹ (B/C(wide))
α (tele) = tanˉ¹ (B/C(tele))

www.necdisplay.com P451X/P501X Page 1 of 6

P451X/P501X Installation Guide

Diagonal Width(W) Height (H)

inches inches inches inches

30 24 18 6 31 - 53 11.3 - 6.7
60 48 36 12 64 - 107 11.0 - 6.6
67 53.6 40.2 14 72 - 120 10.9 - 6.6
72 57.6 43.2 15 77 - 129 10.9 - 6.6
84 67.2 50.4 17 90 - 151 10.9 - 6.6

90 72 54 19 97 - 162 10.9 - 6.6
100 80 60 21 108 - 180 10.9 - 6.6
120 96 72 25 130 - 216 10.8 - 6.5
150 120 90 31 162 - 270 10.8 - 6.5
180 144 108 37 195 - 325 10.8 - 6.5
210 168 126 43 228 - 379 10.8 - 6.5
240 192 144 50 261 - 434 10.8 - 6.5
270 216 162 56 294 - 488 10.7 - 6.5
300 240 180 62 327 - 543 10.7 - 6.5

degrees

Screen Size (4:3)

-6

inches

-3

B

C

wide - tele

inches

D

α

wide - tele

-6

-7

-8

-8

-9

-11

-14

-17

-20

-22

-25

-28

Lens Offset From

Mo u nt Pipe

B

C

Lens Ctr

Screen Ctr

Throw Distance

Screen Bottom

3.05"

C

Throw Distance

Screen Top

D

B

Lens Ctr

Screen Ctr

D

6.22

Ceiling Mounted and Desktop Rev 1.0

Diagrams and Distance Charts

The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of
installation.
Distances are in inches. For millimeters multiply by 25.4.

Ceiling Mounted

Desktop

Distance Chart for popular 4:3 screens

Note: For screen sizes not indicated on the projection

tables, use the formulas on page 1.

www.necdisplay.com P451X/P501X Page 2 of 6

NEC Display Solutions of America, Inc.