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OCC-CWDM-301-18
Average Time Configuration
Average time will affect the SNR directly. The longer the average time is, the higher SNR is, as well as dynamic
range. Therefore, in case of measurement of long-distance optic fiber, long average time should be selected in
order to review events at long-distance end.
Under parameter configuration, use [
▲] and [▼] to highlight “Average time”; press [Enter] to confirm, as shown
in Figure 3-12. Press [
] to exit.
Figure 3-12. Average Time Configuration
Use [
▲] and [▼] to highlight the desired time; and press [Enter] to confirm.
Note
•
There are 5 levels of predefined average time: 15s, 30s, 1min, 2min and 3min
•
The default setting is 30s
Wavelength Configuration
Under parameter configuration, use [
▲] and [▼] to highlight ”wavelength”; press [Enter] to change wavelength,
as shown in Figure 3-13.
Figure 3-13. Wavelength Configuration
30 s
80 km
1.4666
2500 ns
1550 nm
A ve. T i m e:
Ra nge :
IO R :
P ul s e w i dt h:
W a ve l e ngt h:
8K m /D i v 3.50 dB/ D i v
t r a c e1.t rc
15 :20
B
A
30 s
80km
2500 ns
R a n g e
W a v e l e n g t h
1550 nm
P u l s e W i d t h
A ut o
A v g . T i m e
30s
I O R
1.4659
N r e f l . T h r e .
0 .20 dB
R e f l . T h r e .
- 52. 00dB
E n d T h r e.
3 .00 dB
S c a t . C o e f .
- 52. 1dB
A v e r a g i n g
M e a s . M o d e
A ut o
1 5 s
30 s
1 m i n
2 m i n
3 m i n
V F L
L e n g t h U n i t s
1 .4666
1.4666
1550 nm
A ve. T i m e:
Ra nge :
IO R :
W a ve l e ngt h:
8 K m/ D i v 3.50 dB/ D i v
t ra c e1.t r c
15 :20
B
A
30 s
80 km
2500 ns
R a n g e
W a v e l e n g t h
1550 nm
P u l s e W i d t h
A ut o
A v g . T i m e
30s
I O R
1. 4666
N r e f l . T h r e .
0. 20 dB
R e f l . T h r e .
-52 .00dB
E n d T h r e.
3. 00 dB
S c a t . C o e f .
-52 .1dB
A v e r a g i n g
M e a s . M o d e
A ut o
1 5 5 0 n m
1310 nm
V F L
O f f
L e n g t h U n i t s M e t e r [ m ]