Setting up

Setting up

Install the projector according to the environment and manner the projector will be used in.

Arrangement

Refer to the illustrations and tables below to determine screen size and projection distance.

The values shown in the table are calculated for a full size screen: 1024×768 a Screen size (diagonal)

bProjection distance (±10%)

c1 , c2 Screen height (±10%)

On a horizontal surface

Suspended from the ceiling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Keep a space of 30 cm or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

between the sides of the projector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and other objects such as walls.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Consult with your dealer before

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a special installation such as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

suspending from a ceiling.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a

 

 

 

 

 

 

 

4 : 3 screen

 

 

 

 

 

 

 

16 : 9 screen

 

 

 

 

 

 

 

 

b

 

 

c1

 

 

c2

 

 

b

 

 

 

c1

 

 

c2

Screen size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(diagonal)

 

Projection distance

Screen

 

Screen

Projection distance

Screen

 

Screen

 

 

 

 

min.

 

 

 

max.

height

 

height

min.

max.

height

 

height

inch

m

m

inch

 

 

m

inch

cm

 

inch

cm

 

inch

m

inch

m

 

inch

cm

 

inch

 

cm

 

inch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

0.8

0.9

34

 

1.1

41

41

 

16

 

5

 

2

1.0

38

1.1

 

45

39

 

15

 

-1

 

0

40

1.0

1.2

46

 

1.4

56

55

 

22

 

6

 

2

1.3

50

1.5

 

61

51

 

20

 

-2

 

-1

50

1.3

1.5

58

 

1.8

70

69

 

27

 

8

 

3

1.6

63

1.9

 

76

64

 

25

 

-2

 

-1

60

1.5

1.8

70

 

2.1

84

82

 

32

 

9

 

4

1.9

76

2.3

 

91

77

 

30

 

-2

 

-1

70

1.8

2.1

81

 

2.5

98

96

 

38

 

11

 

4

2.3

89

2.7

 

107

90

 

35

 

-3

 

-1

80

2.0

2.4

93

 

2.8

112

10

 

43

 

12

 

5

2.6

102

3.1

 

122

103

 

41

 

-3

 

-1

90

2.3

2.7

105

 

3.2

126

123

 

49

 

14

 

5

2.9

15

3.5

 

138

116

 

46

 

-4

 

-1

100

2.5

3.0

17

 

3.6

140

137

 

54

 

15

 

6

3.2

127

3.9

 

153

129

 

51

 

-4

 

-2

120

3.0

3.6

140

 

4.3

169

165

 

65

 

18

 

7

3.9

153

4.7

 

184

154

 

61

 

-5

 

-2

150

3.8

4.5

176

 

5.4

211

206

 

81

 

23

 

9

4.9

192

5.8

 

230

193

 

76

 

-6

 

-2

200

5.1

6.0

235

 

7.2

282

274

 

108

30

 

12

6.5

256

7.8

 

307

257

 

101

 

-8

 

-3

250

6.4

7.5

294

 

9.0

353

343

 

135

38

 

15

8.1

320

9.8

 

384

322

 

127

 

-10

 

-4

300

7.6

9.0

352

 

10.8

423

411

 

162

46

 

18

9.8

384

11.7

 

461

386

 

152

 

-12

 

-5

Page 7
Image 7
3Com 8755H, 8913H, 8916, 8912H user manual Setting up, Arrangement, On a horizontal surface Suspended from the ceiling

8755H, 8916, 8913H, 8912H specifications

3Com has long been known for its innovative networking solutions, and the 3Com 8912H, 8913H, 8916, and 8755H are prime examples of the company's commitment to high performance and versatility in networking technology. Each of these switches is engineered to meet the demanding requirements of modern network environments, providing robust functionalities designed for enterprise use.

The 3Com 8912H is a high-performance switch that offers 12 ports, allowing for efficient connectivity in medium-sized networks. One of its standout features is its support for Quality of Service (QoS), which prioritizes data traffic to enhance voice and video applications, ensuring minimal latency and jitter. Additionally, it includes advanced Layer 2 switching capabilities, enabling the management of bandwidth and improving network efficiency. Its ability to handle packet filtering and VLAN support allows for the segmentation of network traffic, enhancing both security and performance.

The 3Com 8913H extends the capabilities of the 8912H with 24 ports, making it ideal for growing organizations that require scalable networking solutions. Built with high availability in mind, the 8913H includes redundancy features that minimize downtime. It also supports Power over Ethernet (PoE), enabling the delivery of power to connected devices like IP phones and wireless access points directly through the network cable. This feature not only simplifies the installation of these devices but also enhances network management.

The 3Com 8916 is a more robust model, providing 16 ports and advanced Layer 2 and Layer 3 features. Its intelligent networking capabilities, such as static routing and dynamic management features, make it a suitable choice for larger networks. The switch supports stacking capabilities, allowing multiple units to operate as a single logical unit. This capability enhances management simplicity and scalability while providing redundancy and load balancing for even greater reliability.

Lastly, the 8755H switch stands out due to its ability to deliver high bandwidth and performance for large data center environments. It features a modular design, enabling the deployment of various interface modules to support different network requirements. This flexibility, combined with extensive manageability options, allows the 8755H to adapt to evolving network needs. Its robust security features safeguard the network against unauthorized access and attacks, making it a core component in secure enterprise architectures.

In summary, the 3Com 8912H, 8913H, 8916, and 8755H switches embody a comprehensive suite of networking features designed for efficiency, scalability, and security. They showcase 3Com's commitment to providing high-quality, reliable networking solutions that meet the diverse needs of businesses in an ever-evolving digital landscape.