S P E C F I L E

P ro d u c t N u m b e r : PT-TW231R
P ro d u c t N a m e : Short-Throw LCD Projector

As of February 2012. Specifications and appearance are subject to change without notice. 1/12

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Short-Throw LCD Projector PT-TW231R

Specifications

Main unit
Power supply 100 –240 V AC, 50/60 Hz
Power consumption 310 W
(0.42 W when STANDBY MODE set to ECO,* 1 9.5 W when STANDBY MODE set
to NETWORK.)
LCD panel Panel size 15.0 mm (0.59 inches) diagonal (16:10 aspect ratio)
Display method Transparent LCD panel (× 3, R/G/B)
Pixels 1,024,000 (1,280 × 800) × 3, total of 3,072,000 pixels
Pixel configuration Stripe
Lens Fixed (0.5:1 throw ratio), manual focus, F 1.8, f 6.68 mm
Throw ratio 1.2 –1.9:1
Lamp 230 W UHM lamp × 1
Screen size 1.52 – 2.79 m (60 – 110 inches) diagonally, 16:10 aspect ratio
Colors Full color (16,777,216 colors)
Brightness* 2 2,500 lumens (LAMP POWER: NORMAL)
Center-to-corner uniformity* 2 80%
Contrast* 2 500:1 (full on/off, LAMP POWER: NORMAL)
Resolution 1,280 × 800 pixels (Input signals that exceed this resolution will be
converted to 1,280 × 800 pixels.)
Scanning frequency HDMI fH: 25 kHz – 80 kHz, fV: 50 Hz – 85 Hz,
dot clock: 162 MHz or lower
RGB fH: 15 kHz – 100 kHz, fV: 50 Hz – 100 Hz, dot clock: 140 MHz or lower
(Signals above 140 MHz are downsampled.)
YPBPR (YCBCR) 525i (480i): fH 15.75 kHz; fV 60 Hz,
625i (576i): fH 15.63 kHz; fV 50 Hz,
525p (480p): fH 31.50 kHz; fV 60 Hz,
625p (576p): fH 31.25 kHz; fV 50 Hz,
750 (720)/60p: fH 45.00 kHz; fV 60 Hz,
750 (720)/50p: fH 37.50 kHz; fV 50 Hz,
1125 (1080)/60i: fH 33.75 kHz; fV 60 Hz,
1125 (1080)/50i: fH 28.13 kHz; fV 50 Hz
Video/S-Video fH: 15.75 kHz, fV: 60 Hz [NTSC/NTSC4.43/PAL-M/PAL60]
fH: 15.63 kHz, fV: 50 Hz [PAL/PAL-N/SECAM]
Optical axis shift 10:-1.44 (fixed)
Keystone correction range Vertical: ±20°
Installation Ceiling/desk, front/rear (menu selection)
Built-in speaker Size 3.7 cm (1-15/32 inches) (round) × 1
Output power 10 W (monaural)
Terminals HDMI IN HDMI 19-pin × 1, HDCP compatible
525p (480p), 625p (576p), 750 (720)/60p, 750 (720)/50p,
1125 (1080)/60i, 1125 (1080)/50i, 1125 (1080)/60p, 1125 (1080)/50p
VGA (640 × 480) – WUXGA* 3 (1,920 × 1,200), Audio signal: linear
PCM (sampling frequencies: 48 kHz, 44.1 kHz, 32 kHz)
COMPUTER (RGB) 1 IN D-sub HD 15-pin (female) × 1
R, G, B G: 0.7 Vp-p (1.0 Vp-p for sync on G), 75 ohms;
B, R: 0.7 Vp-p, 75 ohms;
HD/VD, SYNC: high impedance, TTL (positive/negative)
Y, PB (CB), PR (CR) Y: 1.0 Vp-p (including sync signal);
PB (CB), PR (CR): 0.7 Vp-p, 75 ohms
COMPUTER (RGB) 2 IN / 1 OUT
R, G, B D-sub HD 15-pin (female) × 1
(input/output selectable using on-screen menu)
G: 0.7 Vp-p (1.0 Vp-p for sync on G), 75 ohms;
B, R: 0.7 Vp-p, 75 ohms;
HD/VD, SYNC: high impedance, TTL (positive/negative)
VIDEO IN RCA pin × 1, 1.0 Vp-p, 75 ohms
S-VIDEO IN Mini DIN 4-pin × 1, Y: 1.0 Vp-p; C: 0.286 Vp-p, 75 ohms

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Short-Throw LCD Projector PT-TW231R

COMPUTER AUDIO IN M3 (L, R) × 1, 0.5 Vrms
VIDEO/S-VIDEO AUDIO IN
RCA × 2 (L/R × 1), 0.5 Vrms
AUDIO OUT M3 (L, R) × 1 (monitor out: 0 – 2.0 Vrms, variable)
SERIAL IN D-sub 9-pin (male) × 1, for external control (RS-232C compliant)
LAN RJ-45 × 1, for network connection, 100Base-TX/10Base-T, compliant
with PJLink™
USB USB × 1, for interactive function
Power cord length 2.0 m (6 ft 7 in)
Cabinet materials Molded plastic (PC)
Dimensions (W × H × D) 350 mm × 143 mm* 4 × 389 mm
(13-25/32 × 5-5/8* 4 × 15-5/16 inches)
Weight Approximately 4.7 kg (10.6 lbs)
Operation noise 36 dB (LAMP POWER: NORMAL), 29 dB (LAMP POWER: ECO)
Operating temperature 0–35 °C (32–95 °F) up to 1,200 m (3,937 ft) above sea level,
0–30 °C (32–86 °F) between 1,200 m and 2,700 m (3,937 ft and
8,858 ft) above sea level.
Operating humidity 20%– 80% (no condensation)

Remote control unit

Power supply 3 V DC (R03/LR03/AAA type battery × 2)
Operation range* 5 Approximately 7 m (23 ft) when operated from directly in front of the
signal receptor
Dimensions (W × H × D) 52 × 110 × 18 mm (2-1/16 × 4-11/32 × 23/32 inches)
Weight Approx. 67 g (2.4 oz) (including batteries)

Supplied accessories
Power cord with security lock (× 1) (× 2 for PT-TW231REA)
Wireless remote control unit (× 1)
Batteries for remote control (R03/LR03/AAA type × 6)
Computer cable (for VGA, 1.8 m / 5 ft 11 in) (× 1)
Interactive pen (× 1)
Interactive pointer (× 1)
USB calbe (4.5 m / 14 ft 9 in) (× 1)
Software CD-ROM (Logo Transfer Software, Multi Projector Monitoring
and Control Software) (× 1)
Software CD-ROM (LightPen II) (× 1)

Optional accessories
Ceiling mount bracket ET-PKV100H (for high ceilings)
ET-PKV100S (for low ceilings)
Bracket assembly ET-PKT100B
Replacement lamp unit ET-LAT100
Replacement filter unit ET-RFT100
Interactive pen ET-PEN100
Interactive pointer ET-PNT100

Weights and dimensions shown are approximate. Specifications subject to change without notice.
* 1 When the standby mode is set to eco, network functions such as power on over the LAN network will not operate. Also, only certain com-
mands can be received for external control using the serial terminal.
* 2 Measurement, measuring conditions, and method of notation all comply with ISO 21118 international standards.
* 3 WUXGA resolution is supported only when the signals are compliant with VESA CVT-RB (Coordinated Video Timing-Reduced Blanking).
* 4 With legs at shortest position.
* 5 Operation range differs depending on environments.

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Short-Throw LCD Projector PT-TW231R

Dimensions

unit : mm (inch)
NOTE: This illustration is not drawn to scale.

(15-5/16 )
(15-1/32)

389
382

( 5-3/32)
( 5-5/8 )
129

( 3-7/8 )
143
(2-17/32)

95
64

14
( 9/16 )

50 175
(1-31/32) ( 6-7/8 )
350 (13-25/32)

Terminals

1 LAN connector
1 2 3 4 5 6 7 8 9 10
2 HDMI input
3 Computer 1 input
4 Computer 2 input / computer 1 output
5 S-Video input
6 Video input
7 Audio input for video/S-Video
8 Audio output
9 Audio input for computer
10 Serial input

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Short-Throw LCD Projector PT-TW231R

Standard setting-up position
NOTE:

(1-3/16-inch) step.
Illustrations show the projector

Adjustable in
∅38 (1-1/2) installed using optional ceiling mount

58-15/32)
( 36-1/32–
915 –1485

30-mm
bracket ET-PKV100H and bracket
assembly ET-PKT100B.
This illustration is not drawn to scale.
Upper edge of projected image
H

157.5 208
Projected ( 6-3/16 ) ( 8-3/16 )
image

L
H

L: Distance to screen
Lower edge of projected image H: Height from the edge of screen to
center of lensstep.

140 ( 2-3/4)
( 2-1/8 )

70
54

( 5-1/2)
L
70
( 2-3/4)
Projected image

100 100
( 3-15/16 ) ( 3-15/16 )
200
(7-7/8 ) unit : mm (inch)

Projection distance for 16:10 aspect ratio screen

Unit: meters Unit: feet

Screen size Distance to screen (L) Height from the edge of Screen size Distance to screen (L) Height from the edge of
(inch, diagonal) screen to center of lens (H) (inch, diagonal) screen to center of lens (H)

60 0.64 -0.14 60 2.1 -0.5

70 0.75 -0.16 70 2.5 -0.5

80 0.86 -0.18 80 2.8 -0.6

90 0.97 -0.20 90 3.2 -0.7
100 1.09 -0.23 100 3.6 -0.8

110 1.20 -0.25 110 3.9 -0.8

Projection distance for 16:9 aspect ratio screen

Unit: meters Unit: feet

Screen size Distance to screen (L) Height from the edge of Screen size Distance to screen (L) Height from the edge of
(inch, diagonal) screen to center of lens (H) (inch, diagonal) screen to center of lens (H)

60 0.65 -0.17 60 2.1 -0.6

1 70 0.77 -0.20 1 70 2.5 -0.7
80 0.89 -0.22 80 2.9 -0.7

90 1.00 -0.25 90 3.3 -0.8

100 1.12 -0.28 100 3.7 -0.9

105 1.17 -0.29 105 3.8 -1.0

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Short-Throw LCD Projector PT-TW231R

Calculation of the projection distance

For a screen size different from the above, use the equation below to calculate the projection distance.

Aspect ratio 16:10

L (m) = (diagonal screen size in inches) × 0.0112 – 0.0367

Aspect ratio 16:9

L (m) = (diagonal screen size in inches) × 0.0115 – 0.0378

NOTE:
Distances calculated with the above equations will include a slight error.

Installable angle

Install the projector at an angle within the range shown below.

• Vertical direction • Horizontal direction

The projector may be installed at a vertical The projector may be installed at a horizontal angle
angle of ±20°. of ±10° .
+20°

-10° +10°
-20°

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Short-Throw LCD Projector PT-TW231R

List of compatible signals

The signals that can be input to this projector are shown in the table below. Horizontal scanning fre-
quencies of 25 kHz to 80 kHz (15 kHz to 100 kHz for RGB signals), vertical scanning frequencies of 50
Hz to 120 Hz (50 Hz to 100 Hz for RGB signals), and a dot clock of 162 MHz maximum (140 MHz max-
imum for RGB signals) can be input.
NOTE: The native resolution of this projector is 1,280 × 800 pixels. If the display resolution of the input signal is different from the
native resolution, image compression or expansion will be used to convert the input signal to a level within the native resolution.

Display mode Display Scanning frequency Dot clock Format

resolution H V frequency
(dots)1 (kHz) (kHz) (MHz)
NTSC/NTSC4.43/PAL-M/PAL60 720 × 480i 15.7 59.9 − VIDEO/S-VIDEO
PAL/PAL-N/SECAM 720 × 576i 15.6 50.0 −
525i (480i) 640 × 480i 15.7 59.9 12.3 YP B P R /RGB
625i (576i) 768 × 576i 15.6 50.0 14.8
525p (480p) 640 × 480 31.5 59.9 25.2 HDMI/YP B P R /RGB
625p (576p) 768 × 575 31.3 50.0 29.5
720p 1280 × 720 45.0 60.0 74.3
37.5 50.0 74.3
1035i 1920 × 1035i 33.8 60.0 74.3
1080i 1920 × 1080i 33.8 60.0 74.3
28.1 50.0 74.3
1080p 1920 × 1080 56.3 50.0 148.5 HDMI
67.5 60.0 148.5
VGA 640 × 400 31.5 70.1 25.2 RGB
640 × 480 31.5 59.9 25.2 HDMI/RGB
37.5 75.0 31.5 RGB
37.9 72.8 31.5
37.9 74.4 31.5
43.3 85.0 36.0
720 × 400 31.5 70.1 28.3
MAC LC13 640 × 480 35.0 66.6 31.3
MAC13 35.0 66.7 30.2
SVGA 800 × 600 32.7 51.1 32.7
34.5 55.4 36.4
35.2 56.3 36.0
37.9 60.3 40.0 HDMI/RGB
37.9 61.0 40.0 RGB
38.0 60.5 40.1
38.6 60.3 38.6
46.9 75.0 49.5
48.1 72.2 50.0
53.7 85.1 56.3
MAC16 832 × 624 49.7 74.6 57.3
XGA 1024 × 768 44.0 54.6 59.1
46.9 58.2 63.0
47.0 58.3 61.7
48.4 60.0 65.0 HDMI/RGB
48.5 60.0 65.2 RGB
58.0 72.0 74.7
60.0 75.0 78.8
60.3 74.9 79.3
61.0 75.7 81.0
62.0 77.1 84.3
63.5 79.4 83.4
56.5 70.1 75.0
68.7 85.0 94.5
1024 × 768i 36.0 87.2 47.3
35.5 87.0 44.9
MAC19 1024 × 768 60.2 75.1 80.0
* 1 The “i” appearing after the resolution indicates an interlaced signal.

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Short-Throw LCD Projector PT-TW231R

Display mode Display Scanning frequency Dot clock Format
resolution H V frequency
(dots)1 (kHz) (kHz) (MHz)
WXGA 1280 × 768 47.8 59.9 79.5 HDMI/RGB
56.0 70.0 95.0 RGB
57.7 72.0 97.8
1280 × 800 60.3 74.9 102.3 HDMI/RGB
68.6 84.8 117.5
41.2 50.0 68.6
49.6 60.1 79.4
49.7 59.8 83.5
58.2 70.0 98.9 RGB
60.0 72.0 102.8
62.8 74.9 106.5
63.9 60.0 108.0 HDMI/RGB
71.5 84.8 122.5 RGB
1360 × 768 47.7 60.0 86.7
56.2 72.0 100.1
1366 × 768 48.4 60.0 86.7
1376 × 768 48.4 60.0 86.7
MAC21 1152 × 870 68.7 75.1 100.0
SXGA 1152 × 900 61.2 65.2 92.0
71.4 75.6 105.1
61.9 66.0 94.5
1280 × 960 60.0 60.0 108.0
1280 × 1024 31.7 29.8 53.5 HDMI/RGB
60.3 58.1 93.1
62.5 58.6 108.0 RGB
63.3 60.0 108.2
63.7 60.0 109.5
63.9 60.0 107.4
71.7 67.2 117.0
81.1 76.1 135.0
64.0 60.0 108.0 HDMI/RGB
80.0 75.0 135.0 RGB
63.4 60.0 111.5
77.0 72.0 130.1
63.8 60.2 108.2
91.1 85.0 157.5
1280 × 1024i 50.0 86.0 80.0
50.0 94.0 80.0
46.4 86.7 78.7
MAC 1280 × 960 75.0 75.1 126.0
1280 × 1024 80.0 75.1 135.2
SXGA+ 1400 × 1050 64.0 60.2 108.0 HDMI/RGB
65.4 60.1 122.9
65.1 59.9 122.4
WXGA+ 1440 × 900 55.9 59.9 106.5
74.9 60.0 161.9 RGB
UXGA 1600 × 1200 75.0 60.0 162.0
81.3 65.0 175.5
87.5 70.0 189.0
93.8 75.0 202.5
WSXGA+ 1680 × 1050 65.3 60.0 146.3 HDMI/RGB
WUXGA 1920 × 1200 74.0 59.9 154.0
74.6 59.9 193.3 RGB
* 1 The “i” appearing after the resolution indicates an interlaced signal.

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Short-Throw LCD Projector PT-TW231R

Serial connector

The serial connector complies with RS-232C. To control the projector from a personal computer, com-
mands must be input through communication software, based on the format and satisfying the commu-
nication conditions shown below.

Pin assignments and signal names

6 9 No. Signal name Description No. Signal name Description

1 – NC 6 – NC
2 TXD Send data 7 – NC
3 RXD Receive data 8 – NC
4 – NC 9 – NC
1 5
5 GND Ground
D-sub 9-pin (male)
Serial input

Communication conditions (factory setting)

Signal level RS-232C-compliant Character length 8 bits

Synchronization method Start-stop synchronization Stop bit 1 bit
Baud rate 19,200 bps X parameter None
Parity None S parameter None

Basic format

Transmission from the computer begins with STX, then command, parameter, and ETX are sent in this
order. Add parameters according to the details of control.

STX C1 C2 C3 : P1 P2 ... Pn ETX

Start Colon End

(1 byte) Command (1 byte) Parameters (1 byte)
(3 bytes) (undefined length)

NOTE: When sending commands without parameters, a colon (:) is not necessary.

Basic format with sub-commands

Same as the basic format without sub-commands

STX C1 C2 C3 : ETX

S1 S2 S3 S4 S5 E P1 P2 P3 P4 P5 P6

Sub-command Parameters (6 bytes):

(5 bytes) “+” or “-” sign (1 byte) with setting/adjusting value (5 bytes)
Operation (1 byte):
“=” (Sets the value designated by the parameters)

NOTE: When sending sub-commands that require no parameters, operation (E) and parameters are not necessary.

CAUTION
• It may not be possible to send or receive commands for about 10 to 60 seconds when the lamp is first turned on. If this occurs, wait for 60 sec-
onds, then try sending or receiving again.
• When sending multiple commands, be sure to wait for at least 0.5 second after receiving a response from the projector before sending the next
command.
• Additional time is sometimes required for response due to processing inside the projector. Set the time-out period for command response to 10
seconds or more.

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Cable specifications

Projector PC (DTE)

1 NC NC 1
2 2
3 3
4 NC NC 4
5 5
6 NC NC 6
7 NC NC 7
8 NC NC 8
9 NC NC 9

Control commands

Command: <Parameter> Function Callback: <Parameter> Parameter value

Min Max
PON * 1/* 2 Power on (standby mode on) PON – –
POF * 1 Power off (standby mode off) POF – –
AVL:<pl> Volume control AVL:<pl> 0 63
IIS:<input si gnal> Input signal selection IIS:<input signal> – –
OFZ:<off on> Freeze OFZ:<off on> 0 1
VPM:STD Picture mode: Standard VPM:STD – –
VPM:DYN Picture mode: Dynamic VPM:DYN – –
VPM:CIN Picture mode: Cinema VPM:CIN – –
VPM:REA Picture mode: Real VPM:REA – –
VPM:BBD Picture mode: Blackboard VPM:BBD – –
VPM:CBD Picture mode: Colorboard VPM:CBD – –
VPM:IM1 Picture mode: Image 1 VPM:IM1 – –
VPM:IM2 Picture mode: Image 2 VPM:IM2 – –
VPM:IM3 Picture mode: Image 3 VPM:IM3 – –
VPM:IM4 Picture mode: Image 4 VPM:IM4 – –
AUU Volume up AUU – –
AUD Volume down AUD – –
OSH * 1 AV mute OSH – –
DZU Digital zoom: Enlargement DZU – –
DZD Digital zoom: Reduction DZD – –

* 1 Do not send PON, POF, or OSH commands continuously in a short period of time. Doing so may burst the lamp or shorten the lamp replace-
ment cycle.
* 2 These commands are effective when the standby mode is set to eco. (Other commands are not effective.)

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Status request commands

Command Description Callback

<Parameter>
Q PW Standby power status <power condition>
Q $S Lamp status <lamp condition>
Q IN Input signal status <input signal>
Q AV Volume adjustment value <pl>
Q PM Picture mode status Standard STD
Dynamic DYN
Cinema CIN
Real REA
Blackboard BBD
Colorboard CBD
Image 1 IM1
Image 2 IM2
Image 3 IM3
Image 4 IM4
Q FZ Freeze status <off_on>
Q $L Lamp run time <acctch>
Q SH AV mute function status <off_on>
Q KS Keystone correction status <pl>
Q TE Color temperature adjustment status <color temp>
NOTE: If a wrong command is received, the projector will send an ER401 command to the computer.

Parameter format

Parameter format Size (Byte) Definition

<pl> 3 (1 or 2 bytes also Decimal without signs: 0 to 999 (000, 001, 002...999)
possible when Decimal with signs: -99 to +99 (-99...-01, +00, +01, +02...+99)
under control) Callback from the projector is 3 Byte.
<off on> 1 0 = off, 1 = on
<input signal> 3 HD1 = HDMI, RG1 = computer 1, RG2 = computer 2, VID = video,
SVD = S-Video
<power condition> 3 000 = power off (standby mode off), 001 = power on (standby mode on)
<lamp condition> 1 0 = standby, 1 = lamp on under control, 2 = lamp on,
3 = lamp off under control
<acctch> 4 Decimal without signs: 0000 – 9999 hours
<color temp> 1 11 = ultra-low, 0 = low, 1 = standart, 2 = high
NOTE: If a wrong command is received, the projector will send an ER401 command to the computer.

Command example

To set the volume to +30, send the command as shown below.

STX AVL : 30 ETX

Start Command Parameter End

NOTE: When sending commands without parameters, a colon (:) is not necessary.

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Notes on projector placement and operation

The projector uses a high-wattage lamp that becomes very hot during operation. Please observe the
following precautions.

1. Never place objects on top of the projector while it is operating.

2. Make sure there is the unobstructed space as shown below or more around the projector’s exhaust
openings. In addition to this space, also ensure that there is a sufficient work space for removing
and installing the lamp, air filter and other parts.
3. Make sure that nothing blocks the projector’s air intake and exhaust openings. Also, install the pro-
jector so that cool or hot air from other air conditioning equipment does not flow directly toward the
projector’s air intake or exhaust openings.
4. Do not install the projector in an enclosed space. If it is necessary to install it in an enclosed
space, add a separate ventilation system. If ventilation is insufficient, hot air will accumulate at the
intake opening. This may cause the projector’s protective circuit to interrupt projector operation.
200 mm (7-7/8˝) 500 mm (19-11/16˝) 500 mm (19-11/16˝)
or more or more or more

Direction of air intake and exhaust

Intake

Exhaust

Operating the projector continuously

1. If the projector is to be operated continuously 6 hours or more, lamp replacement cycle duration
becomes shorter.
2. The lamp replacement cycle duration becomes shorter if the projector is operated repeatedly for short
periods (one hour or less).

Weights and dimensions shown are approximate. Specifications and appearance are subject to change without notice.
Product availability differs depending on region and country. This product may be subject to export control regulations.

PJLink is a registered trademark, or a trademark application has been filed, in Japan, the United States, and other countries and regions.
All other trademarks are the property of their respective trademark owners.

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