HP 37717C, Руководство по калибровке, Страница: 70 / 399

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General Information
Specifications
*
Where f is the Modulation Frequency in KHz.
Note 1: Typically there will be an
additional 0.01 UI when using
monitor gain.
Note 2: Typically there will be an
additional 0.01 UI when using
equalisation.
Note 3: Typically there will be an
additional 0.01 UI at STM-1
optical with light levels less
than -22 dBm.
Note 4: Typically there will be an
additional 0.01 UI at STM-4
with light levels less than -16
dBm.
Note 5: Typically there will be an
additional 0.02 UI at STM-4
with light levels less than -22
dBm.
Note 6: Typically there will be an
additional 0.01 UI due to
temperature variation.
Note 7: When performing intrinsic
measurements with the
transmitter coupled to the
receiver, the transmitter
intrinsics must be included.
Values are peak to peak jitter in UI
measured with HP1 filter present,
Jitter Peak Results Resolution:
Range 1.6 steps of 0.001 UI.
Range 16 steps of 0.01 UI.
Jitter Hit Count: The number of times
in the jitter gating period that the
received jitter amplitude exceeds a user
set threshold. Counter capacity is
7,100,000 hits per second.
Jitter Hit Threshold Resolution:
Range 1.6 steps of 0.01 UI.
Range 16 steps of 0.1 UI.
Sensitivity >100 ns width to count
typically.
Range 1.6 minimum threshold =
0.05UI.
Range 16 minimum threshold = 0.5UI.
Jitter Hit Seconds:
The number of seconds in which at
least one jitter hit has occurred.
Jitter Hit Free Seconds:
The number of seconds in which no
jitter hits have occurred.
High Frequency Inaccuracy
Bit Rate (Kb/s) Selected Frequency Z (UI)
SDH Rates All 0
2048 >30KHz %
*
8448 >150KHz %
*
34368,
139264
all 0
f
(
30
)
–
70
-------------------- 10
×
f
(
150
)
–
250
------------------------ 10
×