VeEX VePAL TX300M, Руководство пользователя

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Frequency (Hz):
Frequency measured
JTF (Jitter Transfer Function) (dB):
Jitter in divided by jitter out value (in dB)
Mask (dB):
Jitter output in relationship to the input
Progress:
The bar at the bottom of the graph shows the test progress
A green cross (x) indicates the the jitter transfer value has passed.
A red cross (x) indicates that the jitter transfer value has failed.
Yellow triangles (▲) indicate that the jitter transfer value is greater than the value measured by the test set.
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13.4 Wander Measurement
Wander is the long term variation (less than 10 Hz) of the phase of a digital signal.
It requires a very stable external clock (reference clock) to run the measurements, since wander measurements are done over long periods.
Wander has some common synchronization measurements:
TIE Time Interval Error:
Phase difference between the signal being measured and the reference clock, usually in ns
MTIE Maximum Time Interval Error:
Displays the maximum TIE difference (peak-to-peak) during an observation time period
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13.4.1 Setup
Clock Port:
Select the reference clock-- SMA, Balanced RX2, Unbalanced RX2 (Aux BNC)
SMA: Use signal received at the SMA port
RX2: Use the signal received at the 2.048/1.544 bps RX2 port
Clock External:
Select the reference clock rate
SMA: 1.544MHz, 2.048MHz, 1.544Mbps, 2.048 Mbps, 64kbps
RX2: 1.544, 2.048 bps Balanced
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13.4.2 Wander Result
TX300S_e-manual_D07-00-064P_RevA00