Sven RX-160 Bedienungsanleitung

Мыши Sven RX-160 USB Black: Инструкция пользователя

www.sven.ﬁ

✁✂✄☎✄✆✝✞☎✄

✟

✄✠✡☛

✄☎

☞

✞✌✠✍

✎✏✑✒✑✓✔✕✖

✑✗✘✙✚✛✜✢✕✖

✣✤ ✦

❘✧★✩✪✫

RUS

✶

✁✂✄☎✄✆✝✞☎✄

✟✄✠✡☛✄☎☞✞✌✠✍

❘✎✏✑✒✓

✔✕✖✗✘✙✖✚✛✜

✢✖✣

✤✖

✘✦✧ ✦✧

✜★✩✛

TM SVEN!

✪✫✬✫✭

✮✯✰✱✲✳✴✵✴✷✸✫✹

✳✰✵✬✺✹✰✵✻✴

✻✼✸✽✴✵✫✲✾✼✺

✺✿✼✴✯✺✽✾✵✫✰✾

✰

✼✴✰✵✺❀❁✸✽

✬✳✯✺

✻✺✭✰✵✻✺✽

✸

✰✺❂✬✴✼✸✵✫

✫❃✺

✼✴

✻✫✰✾

✱✫✬✸✺✭

✸✰✱✺✲✾✿✺✻✴✼✸❀

❄❅❆❇❈❉❊❇❋

●❈❄❅❇

❍✫✬✰✸❀

1.0 (V 1.0).

■✴✼✼✺✫

✬✳✯✺✻✺✭✰✵✻✺

✸

✰✺✭✫✬❏

✴❁✴❀✰❀

✻

✼✫✽

✸✼

❑✺✬✽✴✷✸❀

✿✴❁✸❁✫✼

▲

✴✻✵✺✬✰✯✸✽

✱✬✴✻✺✽

❍✰✫

✱✬✴✻✴

✿✴❁✸❁✫✼

▲

❆❇❈

▼

❇❅◆❋

❖

❄❈❊P

❍✰✫

✵✺✬❃✺✻▲

✫

✽✴✬✯✸

❀✻✲❀

◗

✵✰❀

✰✺

❙

✰✵✻✫✼✼✺✰✵✾◗

✸❂

✿✴✯✺✼✼▲

❂

✻✲✴✭✫✲✾✷✫✻

●❈❋ ❚❯

●❈❋❱ ❚❋❲P

❋

❇❳

❇▼❈❄❲P❨

❋❲PP

❇❆❅❋ ❆❉❆❅❋❲❲❇❉❆

❩✫✰✽✺✵✬❀

✼✴

✱✬ ✸✲ ✺❏✫✼✼▲✫

✳✰✸✲✸ ❀

✰✭✫✲ ✴✵✾

✬✳✯✺✻✺✭✰ ✵✻ ✺

❙✺✲✫✫

✵✺

❬✼▲✽

✻✺✿

✽✺

❏✼

▲

✼✫✯✺✵✺✬▲✫

✼✫✰✺✺✵✻✫✵✰✵✻✸❀

❭✼

❑✺✬✽✴✷✸❀

✭✴✼✼✺❃✺

✬✳✯✺✻✺✭✰✵✻✴

✱✬✫✭✺✰

✵✴✻✲✫✼✴

✼✴

✳✰✲✺✻✸❀❂

✯✴✯

✫✰✵✾

».

❪✻✵✺✬

✸

✸✿✭✴✵✫✲✾

✼✫

✼✫✰✳✵

✺✵✻✫✵✰✵✻✫✼✼✺✰✵✸

✱✫

✬✫✭

✲✸✷✺✽

✸✲✸

✺✬❃✴✼✸✿✴✷✸✫✹

✿✴

✳❁✫✬

❙

✸✲✸

✱✺✻✬✫

❏

✭✫✼✸❀

✱✬✺✸✿✺

❫✫✭❫✸✫

✺✵

✸✼

❑✺✬✽✴✷✸✸

✰✺✭✫✬❏

✴❁✫✹✰❀

✻

✭✴✼✼✺✽

✬✳✯✺✻✺✭✰✵✻✫

❇❉❇❳❋❲❲❇❉❆P

•

❴✺✽✱✴✯✵✼

▲✹

✭✸✿✴✹✼

✳✭✺

❙✼

▲✹

✭✲❀

✸✰✱✺✲✾✿✺✻✴✼✸❀

✽▲❫✸

✰

✼✺✳✵

❙

✳✯✺✽

•

❍▲

✰✺✯✺✵✺

❬✼✴❀

✺✱✵✸

❬✫✰✯✴❀

✵✫❂✼✺✲✺❃✸❀

•

❵

✴❙✺✵✴✫✵

✱✬✴✯✵✸

❬✫✰✯✸

✼✴

✲◗❙✺✹

✱✺✻✫✬❂✼✺✰✵✸

•

❛✵✸✲✾✼

▲✹

✮✬❃✺✼✺✽✸

❬✼▲

✹

✭✸✿✴✹✼

•

❵

✴✿✬✫

❫✫✼✸✫

– 800 dpi

•

❭✼✵✫✬

❑✫✹✰

USB

•

■✬✴✹✻✫✬▲

✭✲❀

Windows 2000/XP/Vista/7

✼✫

✵✬✫

❙

✳◗

✵✰❀

•

❜

✰✵✫✰✵✻✫✼✼✴❀

❑✺✬✽✴

✽✴✼✸✱✳✲❀✵✺✬✴

✳✭✺

❙✼✴

✭✲❀

✬✳✯✸

❉P

❉❆❋❖❲◆❋

❆❈❋❳❇❅❄❲P❝

•

❞❛

Windows 2000/XP/Vista/7

✸

MAC 9.x

✸✲✸

✻▲❫✫

•

❛✻✺

❙✺✭✼

▲✹

✬✴✿❡✫✽

USB.

●❇❚▼

❇❆❇❅❊❄

❊

❈❄❳❇❆❋

•

✪✺✭✯✲ ◗❬✸✵✫

✽✴✼✸✱✳✲❀✵✺✬

✯

✰✻✺

❙✺✭✼✺✽✳

USB-

✬✴✿❡✫✽✳

✪❴

•

✪✺✰✲✫

✱✺✭✯✲ ◗❬✫✼✸❀

✯

✱✺✬✵✳

USB

✪❴

✴✻✵✺✽✴✵✸

❬✫✰✯✸

✬✴✰✱✺✿✼✴✫✵

✳✰✵✬✺✹✰✵✻✺

❢❣❤✐✛❥❣✣✦✖❦

✘✙ ✙❣✚❧✦✖

✐✖

✣✖♠♥

e www.sven.ﬁ

✪❴

✱✺✬✵

USB

RUS

✷

✁✂✄✂☎✆✝✞

✂✟✠✡☛☞✌✍✝✞

✎✏✑✒

✓✔✕✖✗✘ ✔✙✚✗ ✔

✕✛✜✛✚✓✔✜✗✙✓✗✚✗

✜✔

✢✔✖✗✔

✣✤ ✦✤✧

✖★✕

✩✜✤✪✫

✔✦

✬✭✬✮✯✰✭✱✲✯✱✮✱

✱

✰✳

✱✴✵✰✭✰✶✱✸

✹✺✻✼✽✾✿❀✼✺✾✿❁

✾

❂✹

❃

❀❄

✼❅❆

❀

❇❈❉❊✽❆

❈❋●❈❍

✾❄

✺✾✺■❏✺✾✿❁

, dpi

❑

✺▲

❀

▼

✽✾✿✻✺

◆❏✺❄

✺◆

❖❏✿✽❊

✽

◗

✾

✹✺✺✿✻✽✿✾✿✻❀✽

✾✿❈❏❘❈❊✿❈✼

❙▲

❀❏❈

◆

❈■✽

▲

❍

✼

✶✬❚✰✶✱✰

Windows 2000/XP/Vista/7

Optical

800

2 + 1 (scroll wheel)

USB

FCC, CE

1.5

✩✭

❯❱❲

✰✵✬

❳❈❏❀❄

❨

▲❍✿✺❊

❏✽

❊❈■✺✿❈✽✿

✜

✰❩

✰✶✱✰

❂✿✾✺✽❘❀❏❀✿✽

✼❅❆❁

✺✿

❬

❑

❀

❄

❊✺✻✽❊❁✿✽

◆

✺❏

✿❈◆✿

❅

❊❈❉

❭✽✼✺✻

❏❈

❄❊✽❘✼✽ ✿

❀❪

✻✺❉✼ ✺❫❏✺❴

✺

❄

✺✻❊✽

❫❘✽❏❀❍

❵✾▲❀

❏❀◆❈

◆

❀❪

✻❏✽❆❏❀❪

❄

✺✻❊✽

❫

❘✽❏❀◗

❏✽

✺■❏❈❊❨ ❫

✽❏✺

❀

◆

✺❏ ✿❈◆✿

❅

❀✾❄

❊❈✻ ❏

❅

✾✺✽❘❀❏❀✿✽

✼❅❆❁

✾

❬

❑

✽●✽

❊❈❉

❇✽◆

✺✼✽❏❘❨✽✼

✺■❊❈✿❀✿❁✾❍

✻

■

▲

❀❫❈

◗❆

❀◗

✾✽❊

✻❀✾

❛

✽❏✿❊

❜❝❞❡❢❣❤✐❞❥

•

❦❢❧✐❞❣❢♠♥❞❢

❧❤❝❤♥♦❢❝❞♠♦❞♥❞

♣❝❞q❢r❢✐✐s❢

♦❤t✉❞✈❢

♠♣❝❤q✇❣✐s❢

❞

✐❢

❡✇①②♦

♠✉②③❞♦④

✇♠✐✇q❤✐❞❢❡

r✉❥

♣❝❢♦❢✐⑤❞⑥

•

❜❝✇r②♥✈❞❥

♦✇❝①✇q✇⑥

❡❤❝♥❞

SVEN

♣✇♠♦✇❥✐✐✇

♠✇q❢❝

⑦

❢✐♠♦q②❢♦♠❥

❜✇

⑧♦✇⑥

♣❝❞❣❞✐❢

♦❢❧✐❞❣❢♠♥❞❢

❧❤❝❤♥♦❢❝❞♠♦❞♥❞

❡✇①②♦

ts♦④

❞⑤❡❢✐❢✐s

t❢⑤

♣❝❢rq❤

❝❞

♦❢✉④✐✇①✇

②q❢r✇❡✉❢✐❞❥

www.sven.ﬁ

✁✂✄☎✆✝✞✟☎✠

✁✠✂✝✡

✟☛

☎☞✌☞

✍✎✏✑✒✓✔✕

✏✖✗✘✙✔✕

✚✘✛✕

❘✜✢✣✤

UKR

✹

✁✂✄☎✆✝✞

✂✟✠✡☛✝✞

☞✡✌✞

✍✎✏✑✒✓✔

✕✖✓

✗✖

✏✑✘✙✚✛✜

✓✢✣✙

TM SVEN!

✤ ✦ ✧

★✩✪✫✬✭✮✭✯✰✱✲

✪✦✳✩✮✦✴✲

✬✵✭✶✷✴

✴✸✷✭✺✴✻✮ ✩✼

✸

✯✳✻

★ ✦✰✵✷✳✯✮✵✴✻

✰

✸✽

✦ ✶✰✮

✾

✺✴✿

✴

✷✭

✵ ✩✾

✪ ✦✰✴✧

★✴✦✳✩✮✬✵✭✷✷✼

❀❁❂❃❄❅❆❇❈

❉❄❀❁❃

❊ ✦✩✰✼

1.0 (V 1.0).

❋

★ ✦✰✵✷✳✯✮✵✴

✮✭

✰✷

●✴✦✻✭✯✰✼

❍✴

✻✰✩✮✳✮

✾

✩✼

✵

✷

✾

✴✻✬

✸✭■

✳❍✷✴

✭✵✮✴✦✩✾★✳✻

✪✦✭

✵✴✻

❏✩✰

✪✦✭✵✭

✸✭✩✮ ✦ ✶ ✷✰

❂❃❄❑

❃❁❈▲❆

▼◆

❖❀❄❇P

❏✩✰

✮✴✦

✿

✴✵ ✫ ✾

✷✰

✻✭✦★✳

✱

✵✫✭✩✷✰✩✮✲

◗

■

✸✭★✴✷✷✳

■

✵✫✭✩✷✳★✰✵

❉❃❉❈❄❈ ❘ ❙ ❈▼▼❚

❉❄❃

❃❯❖

❈❙❈▼▼❚

❁◆❘❉❃❁

◆❘ ❀▲❆

▼❃❅❂◆

❱✸✵✭✶✭✲

❲✳

✷✭

✧✴★✫✭✧ ✷✰

✸✬✩✳✫✫✼

✸✦✴✽✳✮✳

★ ✦✰✵✷✳✯✮✵✴

✮✴

❲✷✰❳✳✻

✻✴✶✫✳✵✰

✧ ✼★✰

✷ ✵✰✧✪✴✵✰✧✷✴✩✮✰

❨✷

●✴✦✻✭✯✰✼

✯

✾

✴

✿

✴

★ ✦✰✵✷✳✯✮✵✭

✷✭✧✭✷✭

✷✭

✬✻✴✵✭

■

✼★

✱

».

❩✵✮✴✦

✰

✵✳✧✭✵ ✯

✾

✷

✷ ✩✬✮

✾

✶✴✧✷✴◗

✵✰✧✪✴✵✰✧✭✫✾

✷✴✩✮✰

✪ ✦ ✧

✴✩✴✽✴✲

✭✽✴

✴✦

✿

✭✷✰✸✭✯✰✱✲

✸✭

✸✽✳✮★✳

✭✽✴

✬

❳★✴✧✶ ✷✷✼

✸✭✵✧✭✷✰

✰✷●✴✦✻✭✯✰✱✲

❍✴

✻✰✩✮✳✮

✾

✩✼

✬

✯

✾

✴✻✬

★ ✦✰✵✷✳✯✮✵✰

❃❅❃❯▲P

❁❃❅❂◆

•

❬

✴✻✪✭★✮✷✳✺

✧✳✸✭✺✷

✸✦✬

❲✷✳✺

✧✫✼

✵✳★✴✦✳✩✮✭✷✷✼

✻✳❳✰

✸

✷✴✬✮✽✬★✴✻

•

❊✳✩✴★✴✮✴

❲✷✭

✴✪✮✳❲✷✭

✮

■✷✴✫✴

✿✰✼

•

✤✦✭✯✲✱

✪✦✭★✮✳

❲✷✴

✷✭

✽✬✧✾

✼★✰✺

✪✴✵ ✦

■✷✰

•

❭✮✳✫✾

✷✳✺

✦

✿✴✷✴✻✰❲✷✳✺

✧✳✸✭✺✷

•

❪✴✸✧✰✫✾

✷✭

✸✧✭✮✷✰✩✮

✾

800 dpi

•

❨✷✮ ✦

●✺✩

USB

•

❫✫✼

Windows 2000/XP/Vista/7

✧✦✭✺✵ ✦✳

✷

✪✴✮✦✰✽✷✰

•

✤✦✳✦✴✧✷✭

●✴✦✻✭

✻✭✷✰✪✬✫✼✮✴✦✭

✸✦✬

❲✷✭

✧✫✼

✦✬★✳

❅P

❅❂❈

❖▼◆

❁

P❖

❃❑P

•

❴❭

Windows 2000/XP/Vista/7

✰

MAC 9.x

✭✽✴

✵✳❍

, Linux.

•

❊✰✫✾

✷✳✺

✪✴✦✮

USB.

❉◆

❘

❑

❃❂❃❁❇❀

❘❃

❄❃❯❃❂P

•

✤✰✧

’

✱✧✷✭✺✮

✻✭✷✰✪✬✫✼✮✴✦

✧✴

✵✰✫✾

✷✴

✿

✴

✪✴✦✮✬

USB

✤

❬

•

✤✰✩✫✼

✪✰✧★✫✲

❲✷✷✼

✧✴

✪✴✦✮✬

USB

✤

❬

✭✵✮✴✻✭✮✳

❲✷✴

✦✴✸✪✰✸✷✭✱

✪✦✳✩✮✦✰✺

❵❛❜❝✙❞❝✖

✘✙❡❢❣✢✓✏✖

❝✖

❤✖✐❢✙

www.sven.ﬁ

✤

❬

✪✴✦✮

USB

UKR

✺

❘✁✂✄☎

✆✝✞✟✠✡☛☞✌✠✍

✎✍✞☛✏✌✑✠✒✓✒

✔✕✖✗✘✙✗✘

✖✚✛✚✜✔✕✛✢✣✔✢✜✢

✤✢✛✘ ✕✗✗✦

✧★✩✪✢ ✤✢✖

✫✛★✬✪✕✧

✫✭✮✯✰✱✲✳

✴✵✶✷✸✹✻✼✽✾✿

✶❀

✸✿✵❁❂❃

✤❄✭❅❆✱❇❇❈

❉✷

❊

’

❃

❊✶✵

❋

✽❀

●❍■

✹

❏✷

❊

❑▲

✷

✸❀✿❀❏✷✿✽❀

▼

✾✶✽✵

▼✽

❍

✿✾◆

’

❃●✷

❏

✶✵

✸✿❀❊●

❀✽

●✾❖✻

❍❏✾P✾

✸✾■▼✾

❊❖❀✶✶✼

◗▼❙✾

❖✾

❊✶

❍❚

◆✾

❏

✶✷■

✶✷

❚

✹■▼✾

❊❖❀✶❯

✶❀

❏❍

✼❏✻❀✶✾

✽✵

▼✾✶✽✵▼✽

❍

❱✸✿✵❏✶ ✷

✸✷

❊

’

❃❊✶✵❋✽❀

●❍■✹

❊✾

❑▲

◆✶✾

❏

✹

❲

❏

❀✿✶✷✽❯

❱✼

❊✾

✶✵

❋❳✻

❍❖❨✾P✾

❱❀✿

❏✷❱

❁❀✶✽✿✹

❩❬❭❪❫❴❵❭

•

❛❜❝❞❡❞❢❫

❝

❴❜❣❤❭✐❫

❴❞❥❢❫❦❢❫

❥❜❬❜❵❴❞❬❭❧❴❭❵❭

♠

❡♥❝❫❡❵♥❝❭❪❭

❫

❢❞

❪♥♦♣❴q

❣♣❴❭

r❫❡❧❴❜❝♥s

❡❤

r❬❞❴❞❢✉

❫✈

•

❩❬♥❡♣❵✐❫t

❴♥❬✇

♥❝❞❤q❢♥①

❪❜❬❵❭

SVEN

r♥❧❴❫✈❢♥

♣❡♥❧❵♥❢❜❤s♠❴q❧

②

✐❫♠

①

r❬❭❦❭❢❭

❴❞❥❢❫❦❢❫

❥❜❬❜❵❴❞❬❭❧❴❭❵❭

❪♥♦❞

❣♣❴❭

✉

❪❫❢❞❢♥

❣❞✉

r♥r❞❬❞❡❢q♥✇

♥

r♥❝❫

❡♥❪❤❞❢❢

✖✳✭✳③④✱✭❄⑤④❄③❄

④✳

✮⑥❄❇❄⑦❅

⑧❄✲❅✭⑨

⑩

✹●✷❱✶✷❱✽❯

◆

❶⑩

❷

❍✸

●❍■✷

❸

✾◆

❊✷✻

❯

✶✵

◆

❊✵✽✶✷❱✽❯

, dpi

▲✷✻

❯▼✷❱✽

❯

▼✶✾✸✾

▼

❹✶✽❀✿❺❀

❋❱

❉✷

❊✸✾

❏✷

❊✶✷❱✽

❯

❱✽✵✶

❊✵✿✽✵

●

❻✾

❏❖

❍✶✵

▼✵❳❀✻❂

●

❼❇✳❽✱❇❇❈

Windows 2000/XP/Vista/7

✾✸✽

❍❨✶✵

800

2 + 1 (

▼✾✻❀❱✾

✸✿✾

▼✿✹❨✹

❏✵✶✶✼

)

USB

FCC, CE

1,5

www.sven.ﬁ

USER’S MANUAL

Wired Optical Mouse

❘✁✂✄☎

ENG

✼

User’s Manual

❘✁✂✄☎

Congratulations on purchasing the SVEN mouse!

Please read this operation manual before using the unit and retain this operation

manual in a safe place for future reference.

TRADEMARKS

All trademarks are the property of their legal holders.

NOTICE OF RESPONSIBILITY RESTRICTION

Despite the exerted e

✆

orts to make this manual more exact, some discrepancies may

occur. The information of this manual is given on «as is» terms. The author and the

publisher do not bear any liability to a person or an organization for loss or damages

which have arisen from the information contained in the given manual.

SPECIAL FEATURES

• Compact design, convenient to use with a laptop

• High-precision optical technology

• E

✆

ective on most surfaces

• Stylish ergonomic design

• Resolution 800 dpi

• USB interface

• Drivers installation not required for Windows 2000/XP/Vista/7

• Natural shape comfortable for the hand

SYSTEM REQUIREMENTS

• Windows 2000/XP/Vista/7 and MAC 9.x or higher, Linux.

• Free USB port.

INSTALLATION

•Connect the mouse to an available USB port of your PC.

• Installation of the mouse is automatic after its connection to a PC USB port.

Technical support: www.sven.ﬁ

USB port

ENG

✽

Wired Optical Mouse

TECHNICAL SPECIFICATIONS

TROUBLESHOOTING

Parameter, measurement unit

OS required

Type of mouse

Resolution, dpi

Q-ty of buttons

Interface

Conformity with

✁

able length, m

Value

Windows 2000/XP/Vista/7

Optical

800

2 + 1 (scroll wheel)

USB

FCC, CE

1.5

Problem

The mouse is not working.

Solution

1. Disconnect the mouse from the PC and check

connector pins for possible damage. If there is no

external damage found and connector pins are OK,

connect the mouse to the PC.

2. Address your nearest authorized service centre.

Notes:

• Technical speciﬁcations given in this table are supplemental information and

cannot give occasion to claims.

• Technical speciﬁcations are subject to change without notice due to impro-

vement of SVEN production.

Andere Handbücher für RX-160

Inhaltsverzeichnis

Andere Sven Maus Handbücher

Sven

Sven RX-525SW Bedienungsanleitung

Sven

Sven LX-630 Bedienungsanleitung

Sven

Sven RX-355 Bedienungsanleitung

Sven

Sven RX-230W Bedienungsanleitung

Sven

Sven RX-180 Bedienungsanleitung

Sven

Sven RX-350W Bedienungsanleitung

Sven

Sven CS-304 Bedienungsanleitung

Sven

Sven ML-2000 Destroyer Bedienungsanleitung

Sven

Sven RX-G815 Bedienungsanleitung

Sven

Sven RX-G965 Bedienungsanleitung

Sven

Sven ML-1100 Bedienungsanleitung

Sven

Sven OP 12 Bedienungsanleitung

Sven

Sven RX-G955 Bedienungsanleitung

Sven

Sven RX-555 Bedienungsanleitung

Sven

Sven RX-470W Bedienungsanleitung

Sven

Sven RX-525 Silent Wireless Bedienungsanleitung

Sven

Sven RX-515 Silent Bedienungsanleitung

Sven

Sven RX-305 Bedienungsanleitung

Sven

Sven RX-S70SW Bedienungsanleitung

Sven

Sven RX-G750 Bedienungsanleitung

Sven

Sven RX-325 Bedienungsanleitung

Sven

Sven GX-950 Gaming Bedienungsanleitung

Sven

Sven RX-G940 Bedienungsanleitung

Sven

Sven RX-420W Bedienungsanleitung

Beliebte Maus Handbücher anderer Marken

3DConnexion

3DConnexion CadMouse Pro Bedienungsanleitung

Canyon

Canyon Puncher GM-20 Bedienungsanleitung

Sharkoon

Sharkoon Light2 180 Bedienungsanleitung

Cherry

Cherry MW 8C ERGO Bedienungsanleitung

NGS

NGS HIT RB Bedienungsanleitung

Sharkoon

Sharkoon FireGlider Bedienungsanleitung

Lenovo

Lenovo Wireless Mouse N3902 Bedienungsanleitung

BASETech

BASETech BN-S11 Bedienungsanleitung

Dell

Dell WM326 Bedienungsanleitung

Areson

Areson B213 Bedienungsanleitung

HP M17587-371 Bedienungsanleitung

Chatpen

Chatpen CHA-30 Bedienungsanleitung

GAMDIAS

GAMDIAS DEMETER GMS5000 Bedienungsanleitung

HP KJ453AA - Wireless Laser Mouse Bedienungsanleitung

Trust

Trust GRAPHIN GXT 960 Bedienungsanleitung

Lenovo

Lenovo SD-9082 Bedienungsanleitung

Alienware

Alienware AW320M Bedienungsanleitung

Microsoft

Microsoft SideWinder X3 Mouse Bedienungsanleitung