ASTRO WM-3209 User manual

HD LCD WAVEFORM MONITOR
WM-3209/WM-3209-L/
WM-3209-B
Instruction Manual
Ver.3.00

HD LCD WAVEFORM MONITOR
WM-3209/
WM-3209-L/
WM-3209-B
Instruction Manual
2010.11
Ver.3.00
ASTRODESIGN,Inc

i
Contents
Contents........................................................................................................................................ i
Introduction ................................................................................................................................. iv
Safety Precautions...................................................................................................................... iv
Concerning the Unit................................................................................................................. iv
Concerning the Power Cord........................................................................................................ iv
Concerning the Foreign Matter .................................................................................................... v
Concerning the the Battery .......................................................................................................... v
Concerning the Power Supply.....................................................................................................vi
Concerning the Liquid Crystals ................................................................................................... vi
Concerning the Shock of Impact .................................................................................................vii
Concerning the Installation and Operating Locations..................................................................vii
Concerning the Phenomena Related to Liquid Crystal Performance .........................................viii
Chapter 1 Concerning the WM-3209/WM-3209-L ............................................................................................ 1
WM-3209/WM-3209-L Overview .................................................................................................. 1
Chapter 2 Names of Parts................................................................................................................................3
2.1 WM-3209/WM-3209-L Front Panel and Names of Parts ................................................... 3
2.2 WM-3209/WM-3209-L Rear Panel and Names of Parts.................................................... 5
Chapter 3 Method of Operation...................................................................................................................... 11
3.1 Connections .................................................................................................................... 11
3.2 Method of Operation........................................................................................................ 12
3.3 Switch Specifications.......................................................................................................13
3.3.1 INPUT Switch........................................................................................................ 13
3.3.2 COLOR Switch......................................................................................................14
3.3.3 FREEZE Switch ....................................................................................................15
3.3.4 U1 through U4 Switches .......................................................................................15
3.3.5 Preset Switch ........................................................................................................15
3.3.6 MENU Switch........................................................................................................15
3.3.7 ESC Switch........................................................................................................... 15
3.3.8 F1 through F5 Switches ........................................................................................16
3.3.9 Mode Switches......................................................................................................16
3.4 Description of the MENU Screens................................................................................... 17
3.4.1 MENU Screen Details (Basic Operations).............................................................17
3.4.2 INPUT CHANNEL .................................................................................................21
3.4.3 ID SETTING.......................................................................................................... 22
3.4.4 COMPARE ............................................................................................................24
3.4.5 PICTURE QUALITY.............................................................................................. 30
3.4.6 MARKER ..............................................................................................................31
3.4.7 DISPLAY ...............................................................................................................34
3.4.8 TALLY ...................................................................................................................36
3.4.9 PICTURE .............................................................................................................. 39
3.4.10 WAVE....................................................................................................................41
3.4.11 VECTOR............................................................................................................... 43
3.4.12 AUDIO ..................................................................................................................44
3.4.13 SWITCH ASSIGN ................................................................................................. 46
3.4.14 REMOTE ASSIGN ................................................................................................49
3.4.15 LOAD & SAVE ......................................................................................................54
3.4.16 HARDWARE SETTING.........................................................................................56
3.4.17 RESET CALL ........................................................................................................59
Chapter 4 Description of Each Mode .............................................................................................................61
CH ID 62
Level meter...........................................................................................................................62
Format information ...............................................................................................................62
F1 to F5 switches .................................................................................................................62
Input status information ........................................................................................................ 62
Error information...................................................................................................................63
Time code.............................................................................................................................64

ii
4.1 Preset Mode.................................................................................................................... 65
4.2 Picture Mode 1 ................................................................................................................ 69
4.3 Picture Mode 2 ................................................................................................................ 71
4.4 Waveform Mode .............................................................................................................. 73
4.5 Vector Mode .................................................................................................................... 79
4.6 Status Mode .................................................................................................................... 81
4.7 Audio Mode .....................................................................................................................90
4.8 Phase Compare Mode .................................................................................................... 92
4.9 Ancillary Display Mode .................................................................................................... 95
4.9.1 Multiplexed Packet Check Mode...........................................................................96
4.10 Multimode........................................................................................................................ 99
4.10.1 Multimode 1 ........................................................................................................101
4.10.2 Multimode 2 ........................................................................................................103
4.10.3 Multimode 3 ........................................................................................................106
4.10.4 Multimode 4 ........................................................................................................108
4.10.5 Multimode 5 ........................................................................................................ 110
4.11 Option Mode.................................................................................................................. 112
4.11.1 Option Mode 1 .................................................................................................... 113
4.11.2 Option Mode 2 .................................................................................................... 115
4.12 Compare Mode 1........................................................................................................... 118
4.12.1 Compare Mode 1 Overlap Display ......................................................................120
4.12.2 Compare Mode 1 Vertical Display.......................................................................127
4.13 Compare Mode 2........................................................................................................... 128
4.13.1 Compare Mode 2 Horizontal Display...................................................................130
4.13.2 Compare Mode 2 Vertical Display.......................................................................132
4.14 Compare Mode 3........................................................................................................... 134
4.14.1 Compare Mode 3 Horizontal Display...................................................................136
4.14.2 Compare Mode 3 Vertical Display.......................................................................139
4.15 Compare Mode 4........................................................................................................... 142
4.15.1 Compare Mode 4 Horizontal Display...................................................................144
4.15.2 Compare Mode 4 Vertical Display.......................................................................147
4.16 Compare Mode 5........................................................................................................... 150
4.16.1 Compare Mode 5 Horizontal Display...................................................................152
4.16.2 Compare Mode 5 Vertical Display.......................................................................155
Chapter 5 Specifications .............................................................................................................................. 159
5.1 Input format ...................................................................................................................159
5.2 Input Signal System ...................................................................................................... 161
5.3 Display Method ............................................................................................................. 162
5.4 Headphone Output Format............................................................................................ 162
5.5 Adjustment Values......................................................................................................... 163
5.6 Aspect Ratio.................................................................................................................. 166
5.6.1 When Using a 4:3 Aspect Ratio .......................................................................... 167
5.6.2 When Using a SCOPE Function .........................................................................168
5.6.3 When Using a 16:9 Aspect Ratio ........................................................................ 168
5.6.4 When Using a ×2 Function.................................................................................. 169
5.6.5 When Using a ×4 Function.................................................................................. 169
5.7 Audio Level Meter ......................................................................................................... 170
5.7.1 Audio Level and Cell Color Scheme ...................................................................170
5.7.2 Display Format and Cell Color Scheme .............................................................. 172
5.7.3 Various Settings of the Audio Level Meter........................................................... 175
5.8 Scan Area......................................................................................................................178
5.9 Concerning the Dual Link Input Settings ....................................................................... 180
5.10 Concerning the Selection of Input Channels During External Control (contact power
supply)........................................................................................................................... 183
5.11 Concerning the Dummy Composite Waveform Display................................................. 184
5.12 Concerning the Magnification Auxiliary Line for the Vector Waveform .......................... 185
5.13 Concerning the Phase Difference Alarm Function......................................................... 187
5.14 Concerning the Arrangement of Brightness Values on the Grayscale ........................... 190
5.15 Concerning the Video Image Display in Compare Mode............................................... 192
5.16 Concerning the Low-Power-Consumption Mode........................................................... 201
5.17 Concerning the Flash Protect function .......................................................................... 204
5.18 3D image parallax check ............................................................................................... 210
5.19 Concerning 3D image alignment ................................................................................... 212
5.20 Concerning checking 3D image using the anaglyph system ......................................... 214
5.21 Concerning the brightness difference display function .................................................. 216

Contents
iii
5.22 Factory Default Settings ................................................................................................ 218
Common Setting Items (MENU Items) ............................................................................... 218
Common Setting Items (items used in each mode)............................................................ 223
Common Setting Items (items used in COLOR adjustment mode) .................................... 228
Setting Values by Channel (MENU Items).......................................................................... 229
Setting Items by Channel (Items for Each Mode) ...............................................................231
5.23 General Specifications...................................................................................................232
5.24 External View ................................................................................................................ 233
Chapter 6 Supplied Accessories and Options .............................................................................................. 236
6.1 Supplied Accessories .................................................................................................... 236
Chapter 7 Maintenance, etc. ........................................................................................................................ 238
For Improved Operability ......................................................................................................... 238
If the Unit is not Functioning Normally ..................................................................................... 240
If an Error or Malfunction Occurs ............................................................................................. 241

iv
Introduction
Thank you very much for purchasing the HD LCD WAVEFORM MONITOR WM-3209/WM-3209-L.
This manual describes the operating procedure and precautions for using the WM-3209/WM-3209-L.
Mishandling the WM-3209/WM-3209-L may lead to accidents, so please be sure to read this manual in
order to operate the WM-3209/WM-3209-L correctly.
After reading this manual, please keep it in an accessible place for future use.
Safety Precautions
WARNIN
G
Concerning the Unit
Do not apply strong impact or throw the unit. Doing so may result in
leakage of liquid crystals, damage to the unit, explosion, overheating, or
fire.
Do not use the unit in a location where there is risk of catching fire or
explosion.
High-voltage parts are contained inside the unit. Do not disassemble,
repair, or modify the unit as there is a risk of electric shock or burn injury
as well as possible damage to the unit.
If you hear thunder while using the unit outdoors, immediately turn the
power off, disconnect the power cord from the unit, and move to a safe
location.
Concerning the Power Cord
Always grasp the power cord by the plug when disconnecting.
Do not forcibly bend or twist the power cord during use. This may result in
a fire hazard.
Do not place heavy objects on the power cord. This may lead to damage to
the cord resulting in fire hazard or electric shock.

Introduction
v
Concerning the Foreign Matter
 Do not drop liquid, flammables and metal objects inside this unit. Using
this unit in such a condition will cause fire, electric shock or failure.
Concerning the the Battery
 Be sure to connect the battery with the correct polarity (+, -). Incorrect
connection will result in fire hazard, personal injury, and contamination of
the surrounding area due to the battery exploding or leaking.

vi
CAUTION
Concerning the Power Supply
This unit uses a 10 to 18 V ±5% power supply.
To prevent damage to the unit and/or malfunction, we recommend that you
use the supplied AC/DC adapter. If you do use some other power supply
for some reason, be sure to pay attention to the supply voltage and
polarity.
After turning the power off, do not immediately turn the power on again.
This may lead to damage to the unit.
Note that use of the same DC power supply for audio components such as
a microphone, amplifier, and/or speakers may adversely affect audio
quality.
Concerning the Liquid Crystals
Sometimes there may be unresponsive pixels (always lit or always unlit)
due to performance of the liquid crystal display.
Do not touch liquid crystals if they leak from the liquid crystal panel.
If the liquid crystal panel is accidentally broken and the fluid (liquid crystals) inside leak out, do not
ingest, allow in the mouth, or allow in contact with the skin.
If liquid crystals do somehow get into your eyes or mouth, immediately
flush with water. If liquid crystals come in contact with skin or clothes,
immediately wipe the crystals off with alcohol and wash with soap.
Allowing liquid crystals to remain in contact may result in damage to skin
and/or clothing.
Handle broken liquid crystal panel glass with care.
If the liquid crystal panel breaks, take great care not to cut your hands on the glass shards.
Touching broken glass shards may result in injury.
The liquid crystal panel is an extremely high-precision instrument. Handle
the panel with care in regards to the points listed below.
• Wiping with benzene, thinner, or other alcohol-based solvent may result in deformation.
• If water (saline) is allowed to dry on the liquid crystal panel, it may result in change in color or
staining.
• Extended direct exposure to ultra-violet light may lead to loss of display quality due to browning
of the deflection plate and reduced contrast.
• Discoloration may result if water due to condensation or other cause gets inside the liquid
crystal panel.

Introduction
vii
• Directly hitting or striking the liquid crystal panel may result in cracking.
• Do not disassemble the liquid crystal panel as it is dangerous if liquid crystals leak and get on
the skin.
Handle the liquid crystal panel with care.
If fingerprints or other soiling gets on the liquid crystal protective panel, wipe clean with a cleaner
intended for use with office equipment. Wiping forcefully may lead to scratching or damage to the
protective panel.
Concerning the Shock of Impact
Because this product is a precision device, applying shock to it may cause
damage. Be extra careful when moving this unit. Take great care when
moving the unit.
Do not drop the unit.
Concerning the Installation and Operating Locations
Installing this unit in the following locations may cause failure or accident.
• Locations where the ambient temperature of this unit will exceed the range of 0 to 40°C (Note
1)
• Locations where the ambient humidity of this unit will exceed the range of 30 to 80%RH
• Locations close to air conditioning equipment where sudden temperature change or dew
condensation occurs
• Locations exposed to direct sunlight (Note 2)
• Locations filled with corrosive gas or dust
• Locations where strong magnetic fields are formed
• Locations that may receive sprays of water, oil, chemicals, etc.
• Locations where vibrations may be transmitted from the floor
• Unstable locations
Make sure that the conditions below are satisfied to ensure normal use of
the unit.
• Do not place heavy objects such as a monitor on top of the unit.
• Avoid placing objects around the unit.
Note 1: There is a risk of damage to the backlight or other hardware if the temperature of the
surface of the liquid crystal panel exceeds 60°C.
Note 2: Extended direct exposure to ultra-violet light may lead to loss of display quality due to
browning of the deflection plate and reduced contrast.

viii
Concerning the Phenomena Related to Liquid Crystal Performance
The following conditions may result due to liquid crystal performance.
The response time, brightness, and color of liquid crystals may vary due to
ambient temperature.
Depending on the contents of the display, variations in brightness, flicker,
vertical stripes, and/or minute spots may be visible.
Optical characteristics (brightness, variations in display, etc.) vary
depending on the operating time. These characteristics particularly vary
due to low temperatures.
Variations in the display color may occur depending on the viewing angle.
Noise may occur on the startup screen.
A residual image may occur. Avoid displaying a stationary pattern for an
extended period of time.
There is a possibility of screen burn-in if a stationary pattern is displayed
for an extended period of time.

1
1
1 Concerning the
WM-3209/WM-3209-L
The WM-3209/WM-3209-L is a compact, light-weight, versatile LCD waveform monitor intended for
monitoring video images from a OB van or in the studio.
Video images, waveforms, and audio signals may be monitored from locations where it has been difficult to
transport equipment.
The space required for installation has been reduced by incorporating the capabilities of a picture monitor and
waveform monitor into a single unit.
In terms of its input signals, the waveform monitor supports 21 3G TV video formats, 21 HDTV video formats
and two SDTV video formats. It also supports Dual Link inputs.
The model supports monitoring while stereoscopic image are being taken and, using the anaglyph
stereoscopic system*, it is possible to check 3-dimensional images and measure the differences in the
brightness between the left and right images.
The dual link input signals support 13 HDTV formats.
The ID display can be controlled from an external remote controller (PC). (WM-3209-L only)
(*) Separate special eye-glasses are required to view the images provided by this system.
WM-3209/WM-3209-L Overview
Incorporates an 8.4-inch a-Si TFT liquid crystal panel
Wide range of different video formats supported
3G-SDI-compatible standard: Conforms to SMPTE 425M standard (2.97 Gbit/s SDI input)
HD-SDI-compatible specifications: Conforms to SMPTE292M and BTA S-004B specifications
(1.485 Gbit/sec SDI input)
Dual Link-compatible standard: Conforms to SMPTE 372M standard (1.485 Gbit/s SDI input,
2 systems)
The 1080p60, 1080p60/1.001 and 1080p50 formats are not
supported.
SD-SDI-compatible specifications: Conforms to SMPTE259M specifications
(270 Mbit/sec SDI input)
Composite input (NTSC: Conforms to SMPTE170M, PAL: Conforms to part of
ITU-R. BT624-4)
* Cable extension up to 100 meters is possible for the SDI inputs.
For the 3G SDI signals, use the Belden 1694A 100-meter cable or its equivalent.
Includes connectors for SDI IN (2 channels), SDI MONITOR OUT (2
channels), and composite input (NTSC and PAL)
* When composite signals are input, waveforms of component signals that are converted from
the input signals are displayed.
8 bit composite input resolution due to decoder performance. Furthermore, when supplying a
PAL signal, the waveform is distorted beyond reality for the three lines at the start and end of
the video signal.
Various Video Adjustment Functions
Brightness adjustment function (G, B, and R can be adjusted independently) ±50%
Contrast adjustment function (G, B, and R can be adjusted independently) 0 to 200%
Chroma level adjustment function 0 to 200%
Independent R-B-G ON/OFF function

2
Peak function 0 to 100
Hue adjustment function -179 to 180°
Chroma signal OFF function
Chroma up function
Gamma adjustment function (G, B, and R can be adjusted independently) 1.00 to4.00
Maker display
Center marker, frame marker, and safety marker (95%, 93%, 88%, 80%)
Down converter marker (4:3, 13:9, 14:9)
Cinema marker (2.35:1 Cinemascope, 1.85:1 Cinema Vista, 1.66:1 Euro Vista)
User-variable marker, BOX marker, and grid marker
One-touch switches can be customized to the user’s taste.
 Dummy composite waveform displays supported
 Includes top-bottom reverse display
Includes multi-display modes
Picture, waveform, vector, status, audio level meter, audio vector mode, phase comparison mode,
ancillary display mode, multi-display, and compare mode
Includes compare modes
The unit can display comparisons between the current display and frozen images, other input
signals, or images stored in memory.
Includes a 4-system phase difference display function and alarm function
The phase difference of the two input signal systems (HD-CS, BB)and two external reference
systems can be simultaneously displayed. Furthermore, an alarm display is available by setting a
phase difference versus the input signal (phase comparison mode).
Includes stereoscopic image check function (anaglyph)
Three-dimensional viewing of stereoscopic images is now possible using the anaglyph
stereoscopic system. It is also possible to measure the differences in the brightness between the
left and right images (compare mode 1).
External control (contact power supply system) for lighting the tally lamp,
loading preset data, and other functions is possible.
 External control (from a PC or other controlling device) of the ID display is
possible (WM-3209-L only)
 Includes preset function (loading and saving of up to 8 preset data
possible)
Automatic tracking of the input signal
Automatic tracking of the frame rate (1/1.000 and 1/1.001) and input signal
detection function
Input channel CRC error detection function (for HD-SDI input)
Time codes (VITC, LCT and time codes for users) displayed (with SDI
input)
Panel lock and setting value saving function
Slimline, light-weight
12 V DC-compatible (10 to 18 V)

3
2
2 Names of Parts
2.1 WM-3209/WM-3209-L Front Panel and Names of
Parts
Figure 2.1 WM-3209/WM-3209-L Front Panel
(6)
(4)
U3
HD LCD WAVEFORM MONITOR WM-3208
L.ADJ
INPUT COLOR FREEZE U1 U2 PRESETU4 MENU ESC
AUDIO
PHASE
VECTOR
STATUS
ANC
3
4
5
OPTION
MULTI
1
2
POWER
F 5
F 4
F 3
F 2
F 1
(5) (7) (8) (9) (12) (13) (14) (15) (16) (10) (11) (3) (2) (1)
(21)
(20)
(19)
(18)
(17)

4
Table 2.1 Front Panel Part Names
Number Name Description
(1) POWER Switch/LED Turns power ON/OFF.
When POWER is ON: Lights green
During KEY LOCK: Lights orange
(2) Adjustment dial Adjusts and selects setting values
(3) Mode switch Switches the mode. The mode is switched as follows.
PRESET, PICTURE1, PICTURE2, WAVEFORM, VECTOR, STATUS,
AUDIO, PHASE, ANC, MULTI, OPTION, COMPARE1, COMPARE2,
COMPARE3, COMPARE4, COMPARE5
(4) Headphone jack Outputs audio. (φ35 mm) (*1)
(5) Adjustment dial Adjusts the liquid crystal backlight (*2)
(6) Liquid crystal display Displays video images.
(7) INPUT switch Switches the input channel.
(8) COLOR switch Displays a screen for setting color information. Pressing the same button
again exits the color setup screen.
Items that can be set include: Information, Marker, Cursor, Scale, Waveform,
Vector, Audio Vector and Status.
(9) FREEZE Freezes the on-screen image.
(10) MENU switch Displays the MENU screen. Pressing the same button again exits the color
setup screen.
Pressing and holding the switch locks the front switch.
Repressing and holding the switch unlocks the front switch.
In accordance with the main unit function settings (*3), the settings are
automatically saved in BOOT of the memory at the same time as key lock is
initiated.
(11) ESC Exits the setup screen.
If pressed while saving or clearing picture memory, that operation is
canceled.
(12) U1 User-assigned switch
(13) U 2 User-assigned switch
(14) U 3 User-assigned switch
(15) U 4 User-assigned switch
(16) PRESET switch Saves preset data and displays a call-up screen. Pressing the same button
again exits the color setup screen.
(17) F1 switch The function assigned to this switch varies depending on the mode.
(18) F2 switch The function assigned to this switch varies depending on the mode.
(19) F3 switch The function assigned to this switch varies depending on the mode.
(20) F4 switch The function assigned to this switch varies depending on the mode.
(21) F5 switch The function assigned to this switch varies depending on the mode.
*1: If a embedded audio is multiplexed with the SDI signal, an audio signal is output.
*2: A ripple voltage of approximately 300Hz may arise in the DC power input when brightness is lowered using the
backlight adjustment dial.
*3: For further details, refer to chapter 3 "3.3.6 MENU Switch."

Chapter 2 Names of Parts
5
2.2 WM-3209/WM-3209-L Rear Panel and Names of
Parts
ASTRODESIGN,Inc. MADE IN JAPAN
COMPOSITE IN
BB
REMOTE
HD_CS
A B
B1
B2A2
A1
DC IN 12V
1 GND 4 +12V
MONITOR
OUT
REF.IN
SDI IN
RS485
Figure 2.2 WM-3209 Rear Panel
②
⑥
③
⑧
①
⑤
④
⑨
⑦
⑪
⑩

6
DC IN 12V
ASTRODESIGN,Inc.
1 GND 4 +12V
MADE IN JAPAN
COMPOSITE IN
BB
REMOTE
REF.IN
MONITOR
HD_CS
A B
OUT
B1
B2A2
A1
SDI IN
RS485
Figure 2.3 WM-3209-L Rear Panel
⑧
②
⑥
③
①
⑤
④
⑨
⑦
⑪
⑩
⑫

Chapter 2 Names of Parts
7
Table 2.2 Rear Panel Part Names
Number Name Description
(1) Power connector (*1) This is a XLR connector DC power input terminal. (GND: Pin 1, DC IN: Pin 4)
(2) SDI IN A1ch (*2) This is the Link signal input connector for the 3G-SDI, HD-SDI, SD-SDI and
dual link signals.
(3) SDI IN A2ch This input connector is not provided.
(4) SDI IN B1ch (*2) This is the Link signal input connector for the 3G-SDI, HD-SDI, SD-SDI and
dual link signals.
(5) SDI IN B2ch This input connector is not provided.
(6) MONITOR OUT A This output terminal is for easily checking the SDI input signal.
(7) MONITOR OUT B This output terminal is for easily checking the SDI input signal.
(8) COMPOSITE IN This is the composite input terminal.
(9) REF IN (HD_CS) This is the reference input terminal.
(HD 3-value sync signal)
(10) REF IN (BB) This is the reference input terminal.
(NTSC/PAL black burst signal)
(11) REMOTE (*3) D-sub 15-pin (female) for connect and control
(12) RS485 (*4) Two RJ45 8-pin (female) terminals for RS485 control
One terminal is used for control signal input. When a terminal is used for
control signal input, the other is used as a through-output terminal.
(WM-3209-L only)
*1: POWER connector (Number (1))
Pin No. Description
1 GND
2 NC
3 NC
4 DC IN (10-18 V)
1
2 3
4

8
*2: SDI IN A 1ch to SDI IN B 2ch (Number (2) and (4))
When Dual Link1 has been selected as the input channel, input the Link A signals to the SDI A1 connector and
the Link B signals to the SDI B1 connector.
For details on the dual link inputs, refer to “5.9 Concerning the Dual Link Input Settings.”
For details on selecting the input channel, refer to “3.4.2 INPUT CHANNEL.”
*3: REMOTE connector (Number (11))
Pin No. Description
1 GND
2 R1: User select
3 R2: User select
4 R3: User select
5 ENABLE_RMT
6 R4: User select
7 R5: User select
8 R6: User select
9 R7: User select
10 R8: User select
11 R9: User select
12 R10: User select
13 R11: User select
14 R12: User select
15 GND
This remote controller connector is used for external control (contact power supply system).
Pin 5, ENABLE_RMT, is used to determine whether external control (contact power supply system) is to be
executed.
If external control (contact power supply system) is being used, be sure to connect Pin 5, ENABLE_RMT, to
GND.
If Pin 5, ENABLE_RMT, is left open, settings made using external control (contact power supply system) will not
be executed.
For details, see “3.4.14 REMOTE ASSIGN”.
1
5
6
10
11
15