Panasonic PT-VX500 User manual

SPEC FILE
Prod ct N m b e r : PT-VX500
Prod ct Name : LCD Projector
As of J ne 2012. Specifications and appearance are s bject to change witho t notice.
SFL12M010-1
1/12

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
2/12
Specifications
Main unit
Power supply
Power consumption
LCD panel Panel size
Display method
Pixels
Pixel configuration
Lens
Throw ratio
Lamp
Screen size
Colors
Brightness*2
Center-to-corner uniformity*2
Contrast*2
Resolution
Scanning frequency HDM
RGB
YPBPR(YCBCR)
Video/S-Video
Optical axis shift
Keystone correction range
nstallation
Built-in speaker Size
Output power
Terminals HDM N
COMPUTER (RGB) 1 N
R, G, B
Y, PB(CB), PR(CR)
COMPUTER (RGB) 2 N / 1 OUT
R, G, B
100–240 V AC, 50/60 Hz
365 W
(0.3 W when STANDBY MODE set to ECO,*111.5 W when STANDBY MODE set
to NETWORK.)
16.0 mm (0.63 inches) diagonal (4:3 aspect ratio)
Transparent LCD panel (× 3, R/G/B)
786,432 (1,024 × 768) × 3, total of 2,359,296 pixels
Stripe
Manual zoom (1.6×), manual focus,
F 1.60– 2.12, f 15.28 – 24.62 mm
1.18–1.90:1
280 W UHM lamp
0.76–7.62 m (30 –300 inches) diagonally, 16:10 aspect ratio
Full color (16,777,216 colors)
5,000 lumens (LAMP POWER: NORMAL)
85%
4,000:1 (full on/off, LAMP POWER: NORMAL, with iris on)
1,024 × 768 pixels ( nput signals that exceed this resolution will be
converted to 1,024 × 768 pixels.)
fH: 25 kHz – 80 kHz, fV: 50 Hz–85 Hz,
dot clock: 162 MHz or lower
fH: 15 kHz–100 kHz, fV: 50 Hz–100 Hz, dot clock: 140 MHz or lower
(Signals above 140 MHz are downsampled.)
480i (525i): fH15.75 kHz; fV60 Hz,
576i (625i): fH15.63 kHz; fV50 Hz,
480p (525p): fH31.50 kHz; fV60 Hz,
576p (625p): fH31.25 kHz; fV50 Hz,
720 (750)/60p: fH45.00 kHz; fV60 Hz,
720 (750)/50p: fH37.50 kHz; fV50 Hz,
1080 (1125)/60i: fH33.75 kHz; fV60 Hz,
1080 (1125)/50i: fH28.13 kHz; fV50 Hz
fH: 15.75 kHz, fV: 60 Hz [NTSC/NTSC4.43/PAL-M/PAL60]
fH: 15.63 kHz, fV: 50 Hz [PAL/PAL-N/SECAM]
Vertical: +40% (manual)
Vertical: ±30° (±20° with Real-Time Keystone Correction)
Ceiling/desk, front/rear (menu selection)
4 cm (1-9/16 inches) (round) ×1
10 W (monaural)
HDM 19-pin × 1, HDCP compatible
480p (525p), 576p (625p), 720 (750)/60p, 720 (750)/50p,
1080 (1125)/60i, 1080 (1125)/50i, 1080 (1125)/60p, 1080 (1125)/50p
VGA (640 × 480) – WUXGA*3(1,920 × 1,200),
audio signal: linear PCM
(sampling frequencies: 48 kHz, 44.1 kHz, 32 kHz)
D-sub HD 15-pin (female) ×1
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)
OTE: SY C/HD and VD terminals do not accept tri-level sync signals.
Y: 1.0 Vp-p (including sync signal);
PB(CB), PR(CR): 0.7 Vp-p, 75 ohms
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)
OTE: SY C/HD and VD terminals do not accept tri-level sync signals.

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
3/12
V DEO N
S-V DEO N
COMPUTER AUD O N 1
COMPUTER AUD O N 2 / M C N
V DEO/S-V DEO AUD O N
AUD O OUT
SER AL N
LAN
Power cord length
Cabinet materials
Dimensions (W ×H×D)
Weight
Operation noise
Operating temperature
Operating humidity
Remote control unit
Power supply
Operation range*6
Dimensions (W × H × D)
Weight
Supplied accessories
Optional accessories
Replacement lamp unit
Replacement filter unit
Ceiling mount bracket
Bracket assembly
RCA pin × 1, 1.0 Vp-p, 75 ohms
Mini D N 4-pin × 1, Y: 1.0 Vp-p; C: 0.286 Vp-p, 75 ohms
M3 (L, R) × 1, 0.5 Vrms
M3 (L, R) × 1, 0.5 Vrms
RCA × 2 (L/R × 1), 0.5 Vrms
M3 (L, R) × 1 (monitor out: 0–2.0 Vrms, variable)
D-sub 9-pin (female) × 1, for external control (RS-232C compliant)
RJ-45 × 1, for network connection, 100Base-TX/10Base-T, compliant
with PJLink™
2.0 m (6 ft 7 in)
Molded plastic
379 mm × 107 mm*4× 305 mm* 5
(14-29/32 × 4-7/32*4× 12*5inches)
Approximately 4.8 kg (10.6 lbs)
37 dB (LAMP POWER: NORMAL), 29 dB (LAMP POWER: ECO)
0 – 40 °C (32–104 °F)
20%–80% (no condensation)
3 V DC (R03/LR03/AAA type battery × 2)
Approximately 7 m (23 ft) when operated from directly in front of the
signal receptor
52 × 110 × 18 mm (2-1/16 × 4-11/32 × 23/32 inches)
Approx. 67 g (2.4 oz) (including batteries)
Power cord (× 1) (× 2 for PT-VX500EA)
AC power cord holder (× 1)
Wireless remote control unit (× 1)
Batteries for remote control (R03/LR03/AAA type × 2)
Carrying bag (× 1)
Computer cable (1.8 m (5 ft 11 in), for VGA) (× 1)
Software CD-ROM (Logo Transfer Software, Multi Projector Monitoring
and Control Software) (× 1)
ET-LAV200
ET-RFV200
ET-PKV100H (for high ceilings)
ET-PKV100S (for low ceilings)
ET-PKV200B
Weights and dimensions shown are approximate. Specifications subject to change without notice.
*1 When the STA DBY MODE is set to ECO, network functions such as power on over the LA network will not operate. Also, only certain commands
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 Protruding parts not included.
*6 Operation range differs depending on environments.

305
(12)
90.5
(3-9/16)
189.5
(7-15/32)
379 (14-29/32)
100
(3-15/16)
7
(9/32)
107
(4-7/32)
64
(2-17/32)
Dimensions
unit : mm (inch)
OTE: This illustration is not drawn to scale.
SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
4/12
Terminals
1
567891011
23 4
1 Computer 1 input
2 Computer 2 input / computer 1 output
3 HDM input
4 LAN connector
5 Serial input
6 Video input
7 Audio input for video/S-Video
8 Audio input for computer 1
9 Audio input for computer 2 / mic input
10 Audio output
11 S-Video input

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
5/12
Standard setting-up position
Projected image
Lower edge of projected image
Upper edge of projected image
Projected image
921–1,491
(36-1/4 – 58-11/16)
Adjustable in
30 mm
(1-3/16-inch) step.
143
∅38
(5-5/8)
162
(6-3/8)
(1-1/2)
70
(2-3/4)
100
(3-15/16)
100
(3-15/16)
200
(7-7/8)
140
(5-1/2)
70 (2-3/4)
85 (3-11/32)
L
L
L
HH
unit : mm (inch)
OTE:
Illustrations show the projector
installed using optional ceiling mount
bracket ET-PKV100H and bracket
assembly ET-PKV200B.
This illustration is not drawn to scale.
Caution:
• All construction work should be done by a qualified technician.
• When mounting to the ceiling, use the special mounting bracket. To prevent the projector from swaying or drop-
ping, attach the wire that is included with the projector between the mounting bracket and the ceiling.
0.76 m
1.02 m
1.27 m
1.52 m
1.78 m
2.03 m
2.29 m
2.54 m
3.05 m
3.81 m
5.08 m
6.35 m
7.62 m
0.7
0.9
1.2
1.4
1.7
1.9
2.2
2.4
2.9
3.6
4.8
6.0
7.2
1.1
1.5
1.9
2.3
2.7
3.1
3.5
3.9
4.7
5.8
7.8
9.7
11.7
0.05
0.06
0.08
0.09
0.11
0.12
0.14
0.15
0.18
0.23
0.31
0.38
0.46
0.23
0.31
0.38
0.46
0.53
0.61
0.69
0.76
0.91
1.14
1.52
1.91
2.29
−
−
−
−
−
−
−
−
−
−
−
−
−
30˝
40˝
50˝
60˝
70˝
80˝
90˝
100˝
120˝
150˝
200˝
250˝
300˝
/
/
/
/
/
/
/
/
/
/
/
/
/
(2.3)
(3.0)
(3.9)
(4.6)
(5.6)
(6.2)
(7.2)
(7.9)
(9.5)
(11.8)
(15.7)
(19.7)
(23.6)
(3.6)
(4.9)
(6.2)
(7.5)
(8.9)
(10.2)
(11.5)
(12.8)
(15.4)
(19.0)
(25.6)
(31.8)
(38.4)
(0.16
(0.20
(0.26
(0.30
(0.36
(0.39
(0.46
(0.49
(0.59
(0.75
(1.02
(1.25
(1.51
0.75)
1.02)
1.25)
1.51)
1.74)
2.00)
2.26)
2.49)
2.99)
3.74)
4.99)
6.27)
7.51)
−
−
−
−
−
−
−
−
−
−
−
−
−
Projection size
[diagonal]
Projection distance [L]
Min [wide] Max [telephoto]
P
Height from the edge of screen
to center of lens [H]
Projection distance for 4:3 aspect ratio screen
unit: meters (feet)
OTE:
• The value for L (distance to screen) varies slightly depending on the zoom lens characteristics.
• At the shortest projection distance, the zoom lens characteristics may cause slight image distortion.

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
6/12
Calculation of the projection distance
For a screen size different from the above, use the equation below to calculate the projection distance.
Aspect ratio 4:3
minimum L (m) = (diagonal screen size in inches) × 0.0243 – 0.0294
maximum L (m) = (diagonal screen size in inches) × 0.0391 – 0.0319
OTE:
Distances calculated with the above equations will include a slight error.
-30°
+30°
-15°
+15°
Installable angle
nstall the projector at an angle within the range shown below.
• Vertical direction
The projector may be installed at a vertical
angle of 30°.
• Horizontal direction
The projector may be installed at a horizontal
angle of 15°.
H
(Width of
projected image)
V
(Height of
projected image)
0.4V
Standard postition
of projected image
Shift range
Optical axis shift function allows to shift the position of a projected image as shown below.
• Floor mount
H
(Width of
projected image)
V
(Height of
projected image)
0.4V
Standard postition
of projected image
• Ceiling mount

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
7/12
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
maximum for RGB signals) can be input.
OTE: The native resolution of this projector is 1,024 × 768 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
resolution
(dots)*1
Scanning frequency
H
(kHz)
V
(kHz)
Dot clock
frequency
(MHz)
Format
720 × 480i
720 × 576i
640 × 480i
768 × 576i
640 × 480
768 × 576
1280 × 720
1920 × 1035i
1920 × 1080i
640 × 400
640 × 480
720 × 400
640 × 480
800 × 600
832 × 624
1024 × 768
1024 × 768i
1024 × 768
15.7
15.6
15.7
15.6
31.5
31.3
45.0
37.5
33.8
33.8
28.1
31.5
31.5
37.5
37.9
37.9
43.3
31.5
35.0
35.0
32.7
34.5
35.2
37.9
37.9
38.0
38.6
46.9
48.1
53.7
49.7
44.0
46.9
47.0
48.4
48.5
58.0
60.0
60.3
61.0
62.0
63.5
56.5
68.7
36.0
35.5
60.2
59.9
50.0
59.9
50.0
59.9
50.0
60.0
50.0
60.0
60.0
50.0
70.1
59.9
75.0
72.8
74.4
85.0
70.1
66.6
66.7
51.1
55.4
56.3
60.3
61.0
60.5
60.3
75.0
72.2
85.1
74.6
54.6
58.2
58.3
60.0
60.0
72.0
75.0
74.9
75.7
77.1
79.4
70.1
85.0
87.2
87.0
75.1
−
−
12.3
14.8
25.2
29.5
74.3
74.3
74.3
74.3
74.3
25.2
25.2
31.5
31.5
31.5
36.0
28.3
31.3
30.2
32.7
36.4
36.0
40.0
40.0
40.1
38.6
49.5
50.0
56.3
57.3
59.1
63.0
61.7
65.0
65.2
74.7
78.8
79.3
81.0
84.3
83.4
75.0
94.5
47.3
44.9
80.0
NTSC/NTSC4.43/PAL-M/PAL60
PAL/PAL-N/SECAM
480i (525i)
576i (625i)
480p (525p)
576p (625p)
720p
1035i
1080i
VGA
MAC LC13
MAC13
SVGA
MAC16
XGA
MAC19
VIDEO/S-VIDEO
YPBPR/RGB
HDMI/YPBPR/RGB
RGB
HDMI/RGB
RGB
HDMI/RGB
RGB
HDMI/RGB
RGB
HDMI/RGB
RGB
*1 The “i” appearing after the resolution indicates an interlaced signal.

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
8/12
Display mode Display
resolution
(dots)*1
Scanning frequency
H
(kHz)
V
(kHz)
Dot clock
frequency
(MHz)
Format
1280 × 768
1280 × 800
1360 × 768
1366 × 768
1376 × 768
1152 × 870
1152 × 900
1280 × 960
1280 × 1024
1280 × 1024i
1280 × 960
1280 × 1024
1400 × 1050
1440 × 900
1600 × 1200
1680 × 1050
1920 × 1200
47.8
60.3
68.6
41.2
49.6
49.7
56.0
57.6
58.2
60.0
62.8
63.9
71.5
47.7
56.2
48.4
48.4
68.7
61.2
71.4
61.9
60.0
62.5
63.3
63.7
63.9
71.7
81.1
64.0
80.0
63.4
77.0
63.8
91.1
50.0
50.0
46.4
75.0
80.0
64.0
65.4
65.1
55.9
74.9
75.0
81.3
87.5
93.8
65.3
74.0
74.6
59.9
74.9
84.8
50.0
60.1
59.8
70.0
72.0
70.0
72.0
74.9
60.0
84.8
60.0
72.0
60.0
60.0
75.1
65.2
75.6
66.0
60.0
58.6
60.0
60.0
60.0
67.2
76.1
60.2
75.0
60.0
72.0
60.2
85.0
86.0
94.0
86.7
75.1
75.1
60.2
60.1
59.9
59.9
60.0
60.0
65.0
70.0
75.0
60.0
59.9
59.9
79.5
102.3
117.5
68.6
79.4
83.5
95.0
97.8
98.9
102.8
106.5
108.0
122.5
86.7
86.7
100.1
86.7
100.0
92.0
105.1
94.5
108.0
108.0
107.3
109.5
108.0
117.0
135.0
108.1
135.0
111.5
130.1
109.5
157.5
80.0
80.0
78.4
126.0
135.2
108.0
122.9
122.4
106.5
161.9
162.0
175.5
189.0
202.5
146.3
154.0
193.3
WXGA
MAC21
SXGA
MAC
SXGA+
WXGA+
UXGA
WSXGA+
WUXGA
HDMI/RGB
RGB
HDMI/RGB
RGB
HDMI/RGB
RGB
HDMI/RGB
RGB
HDMI/RGB
RGB
*1 The “i” appearing after the resolution indicates an interlaced signal.

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
9/12
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.
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.
Communication conditions (factory setting)
Pin assignments and signal names
6
15
9
D-sub 9-pin (female)
Serial input
Description
NC
Send data
Receive data
NC
Ground
Signal name
–
TXD
RXD
–
GND
No.
1
2
3
4
5
Description
NC
Connected internally
Connected internally
NC
Signal name
–
RTS
CTS
–
No.
6
7
8
9
CAUTIO
• 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.
Start
(1 byte)
End
(1 byte)
Colon
(1 byte) Parameters
(undefined length)
Command
(3 bytes)
STX ETXC1P1P2...PnC2C3 :
Signal level
Synchronization method
Baud rate
Parity
RS-232C-compliant
Start-stop synchronization
19,200 bps
None
OTE: When sending commands without parameters, a colon (:) is not necessary.
Basic format with sub-commands
Same as the basic format without sub-commands
Parameters (6 bytes):
“+” or “-” sign (1 byte) with setting/adjusting value (5 bytes)
Sub-command
(5 bytes)
Operation (1 byte):
“=” (Sets the value designated by the parameters)
S1 P1 P2 P3 P4 P5 P6S2S3S4S5 E
STX ETXC1C2C3 :
Character length
Stop bit
X parameter
S parameter
8 bits
1 bit
None
None
OTE: When sending sub-commands that require no parameters, operation (E) and parameters are not necessary.

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
10/12
Cable specifications
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
PC (DTE)Projector
NC
NC
NC
NC
NC
NC
NC
NC
Control commands
PON*1/*2
POF*1
AVL:<pl>
IIS:<input signal>
OFZ:<off on>
VPM:STD
VPM:DYN
VPM:CIN
VPM:REA
VPM:BBD
VPM:CBD
VPM:IM1
VPM:IM2
VPM:IM3
VPM:IM4
AUU
AUD
OSH*1
DZU
DZD
Power on (standby mode on)
Power off (standby mode off)
Volume control
Input signal selection
Freeze
Picture mode: Standard
Picture mode: Dynamic
Picture mode: Cinema
Picture mode: Real
Picture mode: Blackboard
Picture mode: Colorboard
Picture mode: Image 1
Picture mode: Image 2
Picture mode: Image 3
Picture mode: Image 4
Volume up
Volume down
AV mute
Digital zoom: Enlargement
Digital zoom: Reduction
PON
POF
AVL:<pl>
IIS:<input signal>
OFZ:<off on>
VPM:STD
VPM:DYN
VPM:CIN
VPM:REA
VPM:BBD
VPM:CBD
VPM:IM1
VPM:IM2
VPM:IM3
VPM:IM4
AUU
AUD
OSH
DZU
DZD
–
–
0
–
0
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
63
–
1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Command: <Parameter> Function Callback: <Parameter> Parameter value
Min Max
*1 Do not send PO , 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.)

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
11/12
Status request commands
Command Description Callback
<Parameter>
QPW
Q$S
QIN
QAV
QPM
QFZ
Q$L
QSH
Standby power status
Lamp status
Input signal status
Volume adjustment value
Picture mode status
Freeze status
Lamp run time
AV mute function status
Standard
Dynamic
Cinema
Real
Blackboard
Colorboard
Image 1
Image 2
Image 3
Image 4
<power condition>
<lamp condition>
<input signal>
<pl>
STD
DYN
CIN
REA
BBD
CBD
IM1
IM2
IM3
IM4
<off_on>
<acctch>
<off_on>
OTE: 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
OTE: When sending commands without parameters, a colon (:) is not necessary.
OTE: If a wrong command is received, the projector will send an ER401 command to the computer.
Parameter format
Parameter format Size (Byte) Definition
<pl>
<off on>
<input signal>
<power condition>
<lamp condition>
<acctch>
3 (1 or 2 bytes also
possible when
under control)
1
3
3
1
4
Decimal without signs: 0 to 999 (000, 001, 002...999)
Decimal with signs: -99 to +99 (-99...-01, +00, +01, +02...+99)
Callback from the projector is 3 Byte.
0 = off, 1 = on
HD1 = HDMI, RG1 = computer 1, RG2 = computer 2, VID = video,
SVD = S-Video
000 = power off (standby mode off), 001 = power on (standby mode on)
0 = standby, 1 = lamp on under control, 2 = lamp on,
3 = lamp off under control
Decimal without signs: 0000–9999 hours

SPEC FI L E
PT-VX500
LCD Projector
As of June 2012
SFL12M010-1
12/12
otes 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. n addition to this space, also ensure that there is a sufficient work space for removing
and installing the lamp, 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. f it is necessary to install it in an enclosed
space, add a separate ventilation system. f ventilation is insufficient, hot air will accumulate at the
intake opening. This may cause the projector’s protective circuit to interrupt projector operation.
500 mm (1 ft 8 in)
or more
500 mm (1 ft 8 in)
or more
1,000 mm (3 ft 3 in) or more
Operating the projector continuously
1. f the projector is to be operated continuously 12 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).
Intake
Exhaust
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.
Direction of air intake and exhaust