JDS Uniphase SK Series, Руководство пользователя, Страница: 11 / 27

5
Specifications
The following optical specifications describe the warranted characteristics of the unit (Table 2).
Supplementary specifications describe the typical non-warranted performance of the unit (Table
3).
Table 2: Optical Specifications
Parameter Typical Maximum
Insertion loss
single-mode
1,2
multimode
1,2
0.4 dB
0.4 dB 0.7 dB
0.7 dB
Return loss
single-mode
2
multimode
2
60 dB
25 dB 55 dB (minimum)
20 dB (minimum)
Polarization dependent loss (single-mode) 0.02 dB 0.05 dB
Insertion loss stability
3
±0.04 dB ±0.06 dB
Repeatability
4
sequential switching
random switching ±0.005 dB
±0.01 dB
±0.02 dB
±0.05 dB
Crosstalk (single-mode) -90 dB -80 dB
Input power 300 mW
Switching time
one channel
5
each additional channel
75 ms (optical connect time)
15 ms
Control 7-bit parallel TTL interface with /Strobe, /Reset,
busy, error lines
1 Specifications apply for the single-common configuration.
2 Excluding connectors.
3 Drift of any channel relative to one assigned reference channel at ambient temperature ±3 °C over a seven-day period.
4 Optimum repeatability after one hour warm-up.
5
Time between commands is 120 ms.