Wandel & Goltermann OLA-25 Aксессуары
Производитель:
Модель:
OLA-25
Дата:
1991
Категория:
Группа:
Описание:
Optical Attenuator

Информация

The OLA-25 is a continuously variable optical attenuator designed for attenuating optical signals carried by single-mode fibers (9/125 /im) operating at 1300 and 1550 nm. The attenuator module is a neutral density Filter placed in the broadened light beam between the input and output connections. The attenuation value is variable between 3 and 60 dB and depends on the position of the Filter, which is set using the rotary control on the front panel. The actual attenuation includes the tosses of both test ports. It is displayed with a resolution of 0.1 dB on the LC display. The display error remains at < ± 0.2 dB. This accuracy is obtained by individual calibration of the display to match the attenuation Filter characteristic. The OLA-25 is factory calibrated at 1300 and 1550 nm. it is set to the corresponding nominal wavelength using the slide switch. The OLA-25 is looped into the test circuit using test adapters, available for ai! standard 2.5 mm connector systems (DIN, FC, ST, etc.). Adapter cables can be used if different connectors are required. The test ports are physical contact (PC) types. This, together with the anti-reflex coated components in the attenuator module, guarantees a constant high return loss of > 23 dB. In normal operation the display of the OLA-25 is battery-powered. If the attenuation can be read directly from a bit error tester or optical power Level Meter in the test circuit, the display can be switched off, as the OLA-25 still functions as an attenuator in this mode.

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Руководство пользователя
Hасто́льная кни́га тип:
Руководство пользователя
Страницы:
51
Размер:
655.60 Kbytes (671334 Bytes)
Язык:
english
Пересмотр:
50/91.07
Hасто́льная кни́га ID:
BN 2200/00.82
Дата:
1991 01 01
Качество:
Отсканированы документу, все читается.
Дата загрузки:
2017 01 22
MD5:
e15c036b0944b4677877d415cc4d98b9
Загрузки:
412

Информация

1 Specifications ... 1-1 1.1 Wavelength ... 1-1 1.2 Attenuation ... 1-1 1.3 Error limits ... 1-2 1.4 Test ports ... 1-3 1.5 Display ... 1 -3 1.6 General specifications ... 1 -4 1.7 Ordering information ... 1-5 2 General information - preparing for use ..2-1 2.1 Test ports ... 2-2 2.1.1 Fitting the test adapters ... 2-2 2.1.2 Cleaning the test ports ... 2-4 2.1.3 Connector life ... 2-8 2.2 Power supply ... 2-9 2.2.1 Battery operation ... 2-9 2.2.2 AC line operation and battery recharging with the LNT-1 ... 2-12 2.3 EMI/RFI suppression ... 2-14 3 Operation ... 3-3 3.1 Overview ... 3-3 3.2 Instrument settings ... 3-6 3.2.1 Switching on, auto-off and permanent operation ... 3-6 3.2.2 Setting the wavelength and attenuation values ... 3-7 3.2.2.1 Setting the wavelength ... 3-7 3.2.2.2 Setting the attenuation ... 3-8 3.3 Looping the OLA-25 into a test circuit ... 3-10 3.3.2 Connection using test adapters (2.5 mm connectors) ... 3-12 3.3.3 Connection using W&G K31XX adapter cables ... 3-14 3.3.4 Test example ... 3-16 4 Further information ... 4-1 4.1 Displayed optical attenuation ... 4-1 4.2 Return loss ... 4-4 4.3 Light attenuation at noncalibrated wavelengths ... 4-7

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