EXFO FTB-8100 Series Transport Blazer for FTB-500 - Manual (Page 440)

Advanced Tabs
426 FTB-8100 Series Transport Blazer
Round Trip Delay (RTD)
Configuration
³
Mode: Allows the selection of the round trip delay test mode. Choices
are Single and Continuous. The default setting is Single.
Single allows testing the round trip delay once when pressing On/Off.
Continuous allows testing the round trip delay continuously in a
repetitive manner (one RTD measurement every 2 seconds) when
pressing On/Off.
³
On/Off button: Allows enabling the round trip delay measurement.
For Single mode, the test is performed once and stops (the On/Off
button turns Off by itself). The On/Off button is only available when the
test is running.
For Continuous mode, the test is performed continuously until the RTD
test or the test case itself is stopped. However, the measurement will
only start if the test is running or when it will be started.The On/Off
button turns Off by itself when the auto-calibration fails.
Note: The Round Trip Delay (RTD) auto-calibration generates some bit errors
when turning On the RTD while the test is running or when starting the test
case while the On/Off button is On. A far end testing equipment will detect
those bit errors.