Exfo FTB-800 Series for FTB-1 Instrukcja Użytkownika Pobierz pdf (Strona 212)

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101

Test Setup - Test Configurator, Timer, and System

202 FTB-700G/800 Series

Signal (Transport)

 Step Size (ppm) allows to set the increment/decrement value (from

0.1 to either 50 or 120 depending on the test configuration) that will be

used when changing the frequency offset with the “+” or “-” button.

RX Frequency

 Frequency (GHz) indicates the frequency of the input signal.

 Offset (ppm) indicates the frequency offset between the standard rate

specification and the rate at the input signal.

Note: For both Frequency and Offset the following background colors are used.

 Max. Negative Offset (ppm) indicates the maximum negative

frequency offset between the standard rate specification and the rate

from the received signal.

OTU1e ± 120 ppm 11049107143 bit/s

OTU2e 11095727848 bit/s

OTU1f 11270089286 bit/s

OTU2f 11317642405 bit/s

a. The frequency offset range is guaranteed for a source signal at 0 ppm. In the event

that the source signal already has an offset, then the output signal may exhibit an

offset larger than the range specified.

Background color Description

Green The frequency is in range.

Red The frequency is out-of-range. LOC is also

displayed.

Gray Pending state.

Interface Frequency Offset

Nominal Frequency

1 2 ... 207 208 209 210 211 212 213 214 215 216 217 ... 620 621

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