NEC Gt2000 Lcd Projector Users Manual

							E-21
     WARNING
¥Only use your LCD projector on a solid, level surface. If the projector falls to the ground, you can be injured and the projector severely damaged.
¥ Do not use the LCD projector where temperatures vary greatly. The projector must be used at temperatures between 0ûC and 40ûC.
¥ Do not expose the LCD projector to moisture, dust, or smoke. This will degrade image performance.
¥ Ensure that you have adequate ventilation around your LCD projector so that heat can dissipate. Do not cover the vents on the side
or the front of the projector.
Ceiling Installation
Installing your LCD Projector on the ceiling must be done by a qualified technician. Contact your NEC dealer for more information.
Do not attempt to install the projector yourself.
NOTE : Distances may vary ±5%.
A
CB F
a
A : Distance between the lens and the screen center
B : Ver tical distance between the projector bottom and the screen center
C : Horizontal throw distance between the screen surface and the lens
F : Ver tical distance between the projector bottom and the top of image 
						

							E-22
Standard Zoom Lens (Wide)
a
b (sin= a)
g (cos= a)
Screen Size
HÐWidth
4 : 3 Diagonal
A
B
C
FDegree
inch
mm
inch
mm
mm
inch
mm
inch
mm
inch
mm
inch9.0
0.16
0.99
32
812.8
40
1016
1557
61.3
329
13.0
1537
60.5
-25
-1.08.9
0.15
0.99
48
1219.2
60
1524
2377
93.6
451
17.8
2349
92.5
6
0.28.8
0.15
0.99
56
1422.4
70
1778
2787
109.7
512
20.2
2754
108.4
21
0.88.8
0.15
0.99
64
1625.6
80
2032
3197
125.9
573
22.6
3160
124.4
36
1.48.8
0.15
0.99
72
1828.8
90
2286
3608
142.0
634
25.0
3566
140.4
51
2.08.7
0.15
0.99
80
2032
100
2540
4018
158.2
695
27.4
3971
156.4
67
2.68.7
0.15
0.99
96
2438.4
120
3048
4838
190.5
818
32.2
4783
188.3
97
3.88.7
0.15
0.99
120
3048
150
3810
6069
238.9
1001
39.4
6000
236.2
142
5.68.7
0.15
0.99
144
3657.6
180
4572
7300
287.4
1184
46.6
7217
284.1
188
7.48.6
0.15
0.99
160
4064
200
5080
8120
319.7
1306
51.4
8028
316.1
218
8.68.6
0.15
0.99
192
4876.8
240
6096
9761
384.3
1550
61.0
9651
380.0
279
11.08.6
0.15
0.99
216
5486.4
270
6858
10992
432.76
1733
68.2
10868
427.9
324
12.8
Standard Zoom Lens (Tele)
8.6
0.15
0.99
240
6096
300
7620
12223
481.2
1916
75.4
12085
475.8
370
14.6
a
b (sin= a)
g (cos= a)
Screen Size
HÐWidth
4 : 3 Diagonal
A
B
C
FDegree
inch
mm
inch
mm
mm
inch
mm
inch
mm
inch
mm
inch7.0
0.12
0.99
32
812.8
40
1016
2013
79.3
329
13.0
1999
78.7
-25
-1.06.8
0.12
0.99
48
1219.2
60
1524
3075
121.1
451
17.8
3053
120.2
6
0.26.8
0.12
0.99
56
1422.4
70
1778
3606
142.0
512
20.2
3581
141.0
21
0.86.8
0.12
0.99
64
1625.6
80
2032
4137
162.9
573
22.6
4108
161.7
36
1.46.8
0.12
0.99
72
1828.8
90
2286
4668
183.8
634
25.0
4635
182.5
51
2.06.7
0.12
0.99
80
2032
100
2540
5199
204.7
695
27.4
5163
203.3
67
2.66.7
0.12
0.99
96
2438.4
120
3048
6260
246.5
818
32.2
6217
244.8
97
3.86.7
0.12
0.99
120
3048
150
3810
7853
309.2
1001
39.4
7800
307.1
142
5.66.7
0.12
0.99
144
3657.6
180
4572
9446
371.9
1184
46.6
9382
369.4
188
7.46.7
0.12
0.99
160
4064
200
5080
10508
413.7
1306
51.4
10436
410.9
218
8.66.7
0.12
0.99
192
4876.8
240
6096
12631
497.3
1550
61.0
12546
493.9
279
11.06.7
0.12
0.99
216
5486.4
270
6858
14224
560.0
1733
68.2
14128
556.2
324
12.86.6
0.12
0.99
240
6096
300
7620
15817
622.7
1916
75.4
15710
618.5
370
14.6
Formulas (mm)
H mm=Horizontal Screen Width
C  = [(53.22H) / 26.6]Ð 85.4
a= Tan
-1(82H) / (26.62C)
A =C / cosa
B= 85.2 + [(82H) / 26.6]
F = (0.3752H) Ð BFormulas (inch)
H inch=Horizontal Screen Width
C  = [(50.72H)Ð 85.4] / 25.4
a= Tan-1(82H) / (26.62C)
A =C / cosa
B = [85.2 + (7.62H )] / 25.4
F = (0.3752H )Ð B
Formulas (mm)
H mm=Horizontal Screen Width
C  = [(53.22H / 26.6) Ð 85.4]21.3
a= Tan
-1(82H) / (26.62C)
A =C / cosa
B = 85.2 + [(82H )/ 26.6]
F = (0.3752H) Ð BFormulas (inch)
H inch=Horizontal Screen Width
C  = {[(50.72H)Ð 85.4]21.3} / 25.4
a= Tan-1(82H) / (26.62C)
A =C / cosa
B= [85.2 + (7.62H )] / 25.4
F = (0.3752H) Ð B A : Distance between the lens and the screen center
B : Vertical distance between the projector bottom and the screen center
C : Horizontal throw distance between the screen surface and the lens
F : Vertical distance between the projector bottom and the top of image
A : Distance between the lens and the screen center
B : Vertical distance between the projector bottom and the screen center
C : Horizontal throw distance between the screen surface and the lens
F : Vertical distance between the projector bottom and the top of image 
						

							E-23
GT2000R
If your projector is mounted on the ceiling and your image is
upside down, use the ÒMenuÓ and ÒSelectÓ buttons on your
projector cabinet or (s) (t)  buttons on your remote control to
correct the orientation. (See page E-39.)
Reflecting The Image
Using a mirror to reflect your LCD projectors image enables
you to enjoy a much larger image. Contact your NEC dealer if
you need a mirror.
If youre using a mirror and your image is inverted, use the
ÒMenuÓ and ÒSelectÓ buttons on your projector cabinet or (s)
(t) buttons on your remote control to correct the orientation.
(See page E-39.)
Mirror
Screen
Rear Screen Projection
You can use your MultiSync GT2000R LCD projector to project
an image from the rear onto a transparent screen. The distance
the projector must be from the screen is the same as if you were
projecting the image from the front. Contact your NEC dealer if
you need a transparent screen.
If youre projecting the image from the rear and your image is
inverted, use the ÒMenu and Select buttons on your projector
cabinet or  (s) (t) buttons on your remote control to correct the
image. (See page E-39.) 
						

							E-24
a
b (sin= a)
g (cos= a)
Screen Size
HÐWidth
4 : 3 Diagonal
A (
=C)
D
Einch
mm
inch
mm
mm
inch
mm
inch
mm
inch32
812.8
40
1016
833
32.8
221
8.7
84
3.348
1219.2
60
1524
1303
51.3
373
14.7
84
3.356
1422.4
70
1778
1539
60.6
449
17.7
84
3.364
1625.6
80
2032
1774
69.8
525
20.7
84
3.372
1828.8
90
2286
2009
79.1
602
23.7
84
3.380
2032
100
2540
2244
88.3
678
26.7
84
3.396
2438.4
120
3048
2714
106.8
830
32.7
84
3.3120
3048
150
3810
3419
134.6
1059
41.7
84
3.3144
3657.6
180
4572
4124
162.4
1287
50.7
84
3.3160
4064
200
5080
4594
180.9
1440
56.7
84
3.3
Formulas (mm)
H mm=Horizontal Screen Width
C  = {[(H/ 26.6) Ð 30.77]230.8} + 841.3
D = (0.3752H) Ð 84.2
E = 84.2
Formulas (inch)
H inch=Horizontal Screen Width
C  = {[(0.952H)Ð 30.8]21.21} + 33.1
D = (0.3752H) Ð 3.3
E =3.3
C : Horizontal throw distance between the screen surface and the lens
D : Vertical distance between the projector foot and the base of image
E : Vertical distance between the projector foot and the screen center
Degree
00
1
2
4 3 1 2
3
4
12345678 (m) (m)
0.0
0.0
1.0
C
Screen center line
Desktop line
Screen Bottom E
DGT2000R
GT2000R 
						

							E-25
S-VIDEO INPUT    AUDIO
VIDEO INPUT    AUDIOREMOTE 1 RGB 1 AUDIO
REMOTE 2/PC
EXT
-CTL RGB   2
AUDIO
AUDIO
OUTPUTREMOTE
OUTPUT REMOTE
INPUT L/MONO R L/MONO R
L/MONO R
R/Cr G/YB/Cb
H/HV V
RGB 
INPUT 2RGB
OUTPUT
Wiring Diagram
Document Camera IBM VGA or Compatibles MonitorDVD Player or LaserDisc Player
Macintosh ISS-6020IPS-4000/
IPS4000Q
VCR/ Laser disc player
Connecting Your Document Camera
You can connect your MultiSync GT2000/GT2000R LCD Projector to a document camera. To
do so, simply:
1. Turn off the power to your LCD projector and document camera.
2. Use a standard video cable to connect your document camera to the Video input on your
projector.
3. Turn on the LCD projector and the document camera.
NOTE: Refer to your document cameras owners manual for more information about your
cameras video output requirements .
Connecting Your VCR Or Laser Disc Player
Use common RCA cables (not provided) to connect your VCR or laser disc player to your
MultiSync GT2000/GT2000R LCD Projector. To make these connections, simply:
1. Turn off the power to your LCD projector and VCR or laser disc player.
2. Connect one end of your RCA cable to the video output connector on the back of your VCR
or laser disc player, connect the other end to the Video input on your projector. Use standard
RCA audio patch cords to connect the audio from your VCR or laser disc player to your
projector (if your VCR or laser disc player has this capability). Be careful to keep your right
and left channel connections correct for stereo sound.
3. Turn on the LCD projector and the VCR or laser disc player.
NOTE: Refer to your VCR or laser disc player owners manual for more information about your
equipments video output requirements.
Connecting An External Monitor
You can connect a separate, external monitor to your LCD projector to simultaneously view on
a monitor the image youre projecting. To do so:
1. Turn off the power to your LCD projector, monitor and computer, document camera or
video source.
2. Use a 15-pin cable to connect your monitor to the RGB Monitor Output (Mini D-Sub 15
pin) connector on your LCD projector.
3. Turn on the LCD projector, monitor and the computer, document camera or video source.
CONNECTIONS3
External Control
Connecting Your PC Or
Macintosh Computer
Connecting your PC or Macintosh
computer to your GT2000/
GT2000R Projector will enable you
to project your computers screen
image for an impressive presenta-
tion.
To connect to a PC or Macintosh,
simply:
1. Turn off the power to your pro-
jector and computer.
2. Use the signal cable thats sup-
plied to connect your PC or
Macintosh computer to the pro-
jector.
3. Turn on the projector and the
computer.
4. If the projector goes blank after a
period of inactivity, it may be
caused by a screen saver in-
stalled on the computer youve
connected to the projector. 
						

							E-26
PC Control
Interface
An RS-232C cable enables you to use your PC as a controller for your projector.
* RS-232C (Straight cable)
* Baud rate: ................................ 9600 bps
* Data length: ............................. 8 bits
* Parity: ...................................... Odd parity
* Stop bit: ................................... 1 bit
* Communications procedure: ... Full duplex
Signal Name
Signal Ground
Receive Data
Transmit Data
Clear To Send
Request To  Send
           -
Not ConnectedFunction
Ground
Data reception
Data transmission
Reception interrupt
Transmission interrupt
Used iside the projector (Should always be left open)
Not used Pin No.
9, 15
6
7
12
8
1, 2
3-5, 10, 11, 13, 14I/O
-
I
O
I
O
-
-
512
3 4
10 67
8 9
15 1112
13 14
* Command specification code: This code specifies whether the
command is a single control command or a multiple control
command.
A single control command (C0H) is valid for only the projector
specified by the unit address.
A multiple control command (C1H) is valid for all projectors
which receive the command, regardless of the unit address. Note
that only projectors in agreement with the unit address will
return an ACK.
* Unit address: This code specifies the ID of the projector (0-64).
You can select the [Settings Menu]->[Projector ID] under the
main menu and specify the ID of projector.
For a single projector, the ID should be set at 0.
8 bits8 bits8 bits8 bits8 bits•••••••••
CKS Command
specification codeUnit
addressFunction
numberData
lengthData
* Function number: The functions identification code.
* Data length: This specifies the number of bytes of data (not
including CKS).
* Data: The parameters attached to the function.
* CKS (check sum): The lower-order 8 bits of the calculation
results from the first byte (i.e., the command specification code)
to the byte in front of CKS.
REMOTE 2/PC Connector
Control Data Format
EMOTE 1B 1 AUDIO
REMOTE 2/PC
EXT-CTLREMOTE
OUTPUT REMOTE
INPUT NO R
To RS232C
RS232C straight cable
Signal source 
						

							E-27
(1) Command (PC to Projector)
Command specification code Unit address Function number Data length         Data .............. CKS
(2) ACK (Projector to PC)
*When there is return data
  Command specification code Unit address Function number Data length          Data ............. CKS
*When there is no return data
  Command specification code Unit address Function number 00H CKS
(3) Receive error (Projector to PC)
Command specification code Unit address 00H 01H EC (Error code) CKS
Command Communications Sequence
When a command sent from the personal computer has been correctly received by the projector, an ACK is returned for the command.
When the command has not been received correctly, a Receive Error is sent back. An invalid command will cause a Command Error.
Note: When anACK from the projector is not confirmed and the next command is received by the projector, an error in
communication can result.
Command
ACK
Receive error
EC (Receive Error Codes)
02H : Command error
04H : Checksum error
08H : Busy
10H : Parameter error
20H : Run error
40H : Receiving error on
    Projector
Note: For a complete PC Control Command Reference, see page E-83. 
						

							E-28
Connections with the ISS-6020
Connections with One ISS-6020 Switcher
Connecting your GT2000/GT2000R projector to a single ISS-6020 switcher (using a cable available separately) delivers a
series of benefits:
¥ You can handle input from ten sources simultaneously.
¥ The ISS-6020 can be controlled by the remote provided with your GT2000/GT2000R or with the buttons on the projector
cabinet. (Source selection without the use of a CTL-6010 cable must be performed with the GT2000 hand held remote
control.)
¥ ÒChannel MemoryÓ enables you to set optimal settings individually for as many as ten different sources.
System Connections Diagram
To use the ISS-6020 with the GT2000/GT2000R, do the following:
* Select the [Settings Menu]®[Switcher Control]®[SW 1 Level] under the main menu.(The factory default setting is
Standalone.)
* Select the [Memory]->[Channel Memory] under the main menu and perform the Signal Entry.
* When using the projector with the external equipment, select the [Memory]->[User Memory] under the main menu and
perform the Signal Entry.
* Select the [Switcher] menu from the main menu and make some adjustments such as RGB gain, color, tint, sharpness,
volume and audio control.
To use GT2000/GT2000R with an ISS-6020, the DIP switch (S8601) located inside the ISS-6020 System Control module
should be set as shown here. (Leave the pins 5 to 7 in their original factory settings.)
* For more details about operating the ISS-6020, please see your ISS-6020 users manual DIP Switch Settings
Lights green
When the GT2000/GT2000R is used with the ISS-6020 switcher in
bundled operation, the indicator LED (STATUS) lights green after
switching on the GT2000/GT2000R power.
MENU
SELECT
ENTER
STATUS
ZOOM FOCUS POWER
ON / OFF
-+
-
+
-
+
GT2000
GT2000R ISS-602011
1
indicates the REMOTE 1 connectorControl cable
Video signal cable 1
10
12345678
SHORTOPEN
Pin No.8 must be set at OPEN. 
						

							E-29
Connections with Multiple ISS-6020 Switcher
You can accommodate as many as 100 sources by connecting your GT2000/GT2000R to one ISS-6020 switcher that acts as
master and ten more switchers that are slaves.
To connect several ISS-6020s, the Switcher Control on the Settings Menu should be set to SW 2 Level for multiple
projectors. (See page E-38.)
Note: The more ISS-6020 switchers that are connected, the more time is needed for the projector to start up.
System Connections Diagram
DIP Switch Settings
To use the GT2000/GT2000R with two ISS-6020 switchers or more, the DIP switch (S8601) inside the ISS-6020 System
Control module should be set as shown here. The pin 8 should be set to OPEN. (Leave the pins 5 to 7 in their original factory
settings.)
Slide Switch Settings
Set the slide switch located inside the ISS-6020 system control module to the RS-422 side.
* Select the [Settings Menu]®[Switcher Control]®[SW 2 Level] under the main menu.
* Select the [Memory]®[Channel Memory] under the main menu and perform the Signal Entry.
* When using the projector with the external equipment, select the [Memory]®[User Memory]
under the main menu and perform the Signal Entry.
* Select the [Switcher] menu from the main menu and make some adjustments such as RGB gain,
color, tint, sharpness, volume and audio control.
GT2000
GT2000R ISS-6020
(Slave 1)1
2
ISS-6020
(Master)12
ISS-6020
(Slave 2)1
2
ISS-6020
(Slave 3)1
2
ISS-6020
(Slave 10)1
2
1
1
indicates connection to the REMOTE 1 connector
2
indicates connection to the REMOTE 2 connectorControl cable
Image signal cable 1
10
1
10
1
10
1
10
1
2
3
10
12345678
SHORTOPEN
Master12345678
SHORTOPEN
Slave 3
12345678
SHORTOPEN
Slave 4
12345678
SHORTOPEN
Slave 5
12345678
SHORTOPEN
Slave 6
12345678
SHORTOPEN
Slave 7
12345678
SHORTOPEN
Slave 8
12345678
SHORTOPEN
Slave 9
12345678
SHORTOPEN
Slave 10
12345678
SHORTOPEN
Slave 1
12345678
SHORTOPEN
Slave 2
RS-422
RS-232C 
						

							E-30
Connecting Multiple Projectors
As many as 64 projectors can be connected together and controlled by the same PC. For more information about managing multiple
projectors. See page E-31.
External equipment
(Max.10 units)
RGB interface
(Signal distributor)
To REMOTE2
To RGB/YCbCr input 1
Video Signal
To RGB/YCbCr input 1
To RGB/YCbCr input 1 To REMOTE 2/PC
To REMOTE 1
To REMOTE 2/PC
To REMOTE 1
To REMOTE 2/PC
To REMOTE 1
To REMOTE 2/PC
To REMOTE 1
Control Cable
Control Cable
* When you connect multiple projectors, a different ID number (from 00 to 64) must be assigned to each. To specify an ID of the
projector, select the [Settings Menu]®[Projector ID] under the main menu and enter the ID number.
* The sync termination must be set at 75W. To do this, select the [Settings Menu]®[Sync Termination] under the main menu and
select 75W.
* The ID number 1 should be assigned to the projector which is connected with a PC and 64 to the projector which is connected
with the ISS-6020 Switcher.
* When connecting the ISS-6020 Switcher with a control cable in connection of multiple projectors, connect the ISS-6020 Switcher
to the last projector with an unused REMOTE 1 connector. The ID number of the last projector should be set at 64.
Also you must set the RS-232C/RS-422 slide switch inside the ISS-6020 system control module to RS-422.
RS232C Cable
ID=01
ID=02
ID=63
ID=64