Troubleshooting

Problem

Cause/Solution

A

Optical zoom cannot

Optical zoom cannot be used while recording movies.

76

be used.

 

 

 

• Digital zoom is set to Off in the setup menu.

127

 

• Digital zoom cannot be used in the following

 

 

situations.

 

 

- When Scene auto selector, Portrait or Night

38, 39, 45

Digital zoom cannot

portrait is selected for scene mode

 

- When subject tracking mode is selected

54

be used.

- When smart portrait mode is selected

51

 

 

- When Multi-shot 16 is selected for Continuous

101

 

- Before movie recording begins (digital zoom of up

76

 

to 2× can be applied while movies are being

 

 

recorded)

 

Image mode not

Another function that is set now is restricting Image

109

available.

mode.

 

 

• Off is selected for Shutter sound of the Sound

128

 

settings option in the setup menu.

 

 

• Continuous, BSS, or Multi-shot 16 is selected for

101

No sound when

Continuous in shooting menu.

 

shutter is released.

• When Sports, or Museum is selected in scene mode.

39, 42

 

• Blink proof is set to On for smart portrait mode.

52

 

• D mode is selected.

76

 

• Do not block the speaker.

4, 26

AF-assist illuminator

• Off is selected for AF assist in the setup menu.

127

• AF-assist illuminator turns off automatically in some

38 – 43

does not light.

scene modes.

 

 

 

 

 

 

Pictures appear

Lens is dirty. Clean lens.

140

smeared.

 

 

Colors are unnatural.

White balance does not match light source.

98

 

 

 

 

The subject is dark, so shutter speed is too slow or ISO

 

Randomly spaced

sensitivity is too high. Noise can be reduced by:

 

bright pixels (“noise”)

• Use flash.

32

appear in image.

• Specifying a lower ISO sensitivity setting.

102

 

• Using a scene mode which has noise reduction ability.

38

 

• Flash is W (off).

32

 

• Flash window is blocked.

26

Pictures are too dark

• Subject is beyond flash range.

32

• Adjust exposure compensation.

36

(underexposed).

• Raise the ISO sensitivity.

102

 

 

• Subject is backlit. Use Backlight or change the flash

32, 43

 

mode to X(fill flash).

 

Pictures are too bright

Adjust exposure compensation.

36

(overexposed).

 

 

Technical Notes

151

Page 162 Page 164
Page 163
Image 163
Nortel Networks S640 user manual 151, Image mode not, Mode, Off is selected for Shutter sound of the Sound
Page 162 Page 164

S640 specifications

Nortel Networks S640, a notable member of the Nortel product line, offers a comprehensive solution for enterprises requiring high-performance network equipment. Known for its reliability and extensive features, the S640 has gained traction in various industries, addressing the demand for robust telecommunications and data networking.

One of the primary characteristics of the S640 is its advanced switching capabilities. It operates at Layer 2 and Layer 3, making it suitable for diverse network topologies. The switch is capable of managing a high volume of data traffic efficiently due to its scalability, accommodating growing network needs without compromising performance.

The S640 is equipped with Power over Ethernet (PoE) technology, which simplifies the deployment of connected devices like IP cameras and VoIP phones. This feature not only reduces the need for separate power supplies but also enhances installation flexibility.

Another vital feature of the S640 is its support for Quality of Service (QoS). This functionality ensures that critical applications receive priority over less essential traffic, leading to improved performance for services such as voice and video over the network. QoS management is especially crucial in business environments where it is necessary to maintain operational efficiency and user satisfaction.

Security is paramount in modern networks, and the S640 addresses this with a range of integrated security features. It supports advanced authentication mechanisms such as IEEE 802.1X, ensuring that only authorized devices can access the network. Additionally, features like virtual LAN (VLAN) support help isolate different segments of network traffic, bolstering security and management capabilities.

The S640 also emphasizes energy efficiency, making it an environmentally friendly option for enterprises concerned about their carbon footprint. Nortel has designed this equipment to meet various energy standards, reducing consumption while delivering optimal performance.

In summary, the Nortel Networks S640 stands out in the crowded networking market through its powerful switching capabilities, support for PoE and QoS, robust security features, and commitment to energy efficiency. This combination of characteristics makes it an ideal choice for enterprises looking to upgrade their networking infrastructure to meet contemporary demands. With its reliable performance and versatile functionalities, the S640 continues to be a significant asset in the evolution of network technology.
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